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Index: moodle/lib/javascript.php
--- moodle/lib/javascript.php Base (1.55)
+++ moodle/lib/javascript.php Locally Modified (Based On 1.55)
@@ -27,37 +27,39 @@
 define('ABORT_AFTER_CONFIG', true);
 require('../config.php'); // this stops immediately at the beginning of lib/setup.php
 
-$file = min_optional_param('file', '', 'SAFEPATH');
+// setup include path
+set_include_path($CFG->libdir . '/minify/lib' . PATH_SEPARATOR . get_include_path());
+require_once('Minify.php');
+
+$file = min_optional_param('file', '', 'RAW');
 $rev  = min_optional_param('rev', 0, 'INT');
 
-$jspath = $CFG->dirroot.$file;
-
-if (empty($file) or strpos($file, '/') !== 0 or !preg_match('/\.js$/', $file) or !file_exists($jspath)) {
-    header('HTTP/1.0 404 not found');
-    die('JS file was not found, sorry.');
+if (strpos($file, ',')) {
+    $jsfiles = explode(',', $file);
+    foreach ($jsfiles as $key=>$file) {
+        $jsfiles[$key] = $CFG->dirroot.$file;
 }
+} else {
+    $jsfiles = array($CFG->dirroot.$file);
+}
 
-send_cached_js($jspath);
+minify($jsfiles);
 
+function minify($files) {
+    global $CFG;
 
-//=================================================================================
-//=== utility functions ==
-// we are not using filelib because we need to fine tune all header
-// parameters to get the best performance.
+    if (0 === stripos(PHP_OS, 'win')) {
+        Minify::setDocRoot(); // IIS may need help
+    }
+    Minify::setCache($CFG->dataroot.'/temp', true);
 
-function send_cached_js($jspath) {
-    $lifetime = 60*60*24*20;
+    $options = array(
+        // Maximum age to cache
+        'maxAge' => (60*60*24*20),
+        // The files to minify
+        'files' => $files
+    );
 
-    header('Content-Disposition: inline; filename="javascript.php"');
-    header('Last-Modified: '. gmdate('D, d M Y H:i:s', filemtime($jspath)) .' GMT');
-    header('Expires: '. gmdate('D, d M Y H:i:s', time() + $lifetime) .' GMT');
-    header('Pragma: ');
-    header('Accept-Ranges: none');
-    header('Content-Type: application/x-javascript');
-    if (!min_enable_zlib_compression()) {
-        header('Content-Length: '.filesize($jspath));
+    Minify::serve('Files', $options);
+    die();
     }
-
-    readfile($jspath);
-    die;
-}
Index: moodle/lib/minify/LICENSE.txt
--- moodle/lib/minify/LICENSE.txt No Base Revision
+++ moodle/lib/minify/LICENSE.txt Locally New
@@ -0,0 +1,26 @@
+Copyright (c) 2008 Ryan Grove <ryan@wonko.com>
+Copyright (c) 2008 Steve Clay <steve@mrclay.org>
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are met:
+
+  * Redistributions of source code must retain the above copyright notice,
+    this list of conditions and the following disclaimer.
+  * Redistributions in binary form must reproduce the above copyright notice,
+    this list of conditions and the following disclaimer in the documentation
+    and/or other materials provided with the distribution.
+  * Neither the name of this project nor the names of its contributors may be
+    used to endorse or promote products derived from this software without
+    specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
+ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
Index: moodle/lib/minify/MOODLE_README.txt
--- moodle/lib/minify/MOODLE_README.txt No Base Revision
+++ moodle/lib/minify/MOODLE_README.txt Locally New
Index: moodle/lib/minify/README.txt
--- moodle/lib/minify/README.txt No Base Revision
+++ moodle/lib/minify/README.txt Locally New
@@ -0,0 +1,132 @@
+The files in this directory represent the default Minify setup designed to ease
+integration with your site. This app will combine and minify your Javascript or
+CSS files and serve them with HTTP compression and cache headers.
+
+
+RECOMMENDED
+
+It's recommended to edit config.php to set $min_cachePath to a writeable
+(by PHP) directory on your system. This will improve performance.
+
+
+GETTING STARTED
+
+The quickest way to get started is to use the Minify URI Builder application
+on your website: http://example.com/min/builder/
+
+
+MINIFYING A SINGLE FILE
+
+Let's say you want to serve this file:
+  http://example.com/wp-content/themes/default/default.css
+
+Here's the "Minify URL" for this file:
+  http://example.com/min/?f=wp-content/themes/default/default.css
+
+In other words, the "f" argument is set to the file path from root without the 
+initial "/". As CSS files may contain relative URIs, Minify will automatically
+"fix" these by rewriting them as root relative.
+
+
+COMBINING MULTIPLE FILES IN ONE DOWNLOAD
+
+Separate the paths given to "f" with commas.
+
+Let's say you have CSS files at these URLs:
+  http://example.com/scripts/jquery-1.2.6.js
+  http://example.com/scripts/site.js
+
+You can combine these files through Minify by requesting this URL:
+  http://example.com/min/?f=scripts/jquery-1.2.6.js,scripts/site.js
+
+
+SIMPLIFYING URLS WITH A BASE PATH
+
+If you're combining files that share the same ancestor directory, you can use
+the "b" argument to set the base directory for the "f" argument. Do not include
+the leading or trailing "/" characters.
+
+E.g., the following URLs will serve the exact same content:
+  http://example.com/min/?f=scripts/jquery-1.2.6.js,scripts/site.js,scripts/home.js
+  http://example.com/min/?b=scripts&f=jquery-1.2.6.js,site.js,home.js
+
+
+MINIFY URLS IN HTML
+
+In (X)HTML files, don't forget to replace any "&" characters with "&amp;".
+
+
+SPECIFYING ALLOWED DIRECTORIES
+
+By default, Minify will serve any *.css/*.js files within the DOCUMENT_ROOT. If
+you'd prefer to limit Minify's access to certain directories, set the 
+$min_serveOptions['minApp']['allowDirs'] array in config.php. E.g. to limit 
+to the /js and /themes/default directories, use:
+
+$min_serveOptions['minApp']['allowDirs'] = array('//js', '//themes/default');
+
+
+GROUPS: FASTER PERFORMANCE AND BETTER URLS
+
+For the best performance, edit groupsConfig.php to pre-specify groups of files 
+to be combined under preset keys. E.g., here's an example configuration in 
+groupsConfig.php:
+
+return array(
+    'js' => array('//js/Class.js', '//js/email.js')
+);
+
+This pre-selects the following files to be combined under the key "js":
+  http://example.com/js/Class.js
+  http://example.com/js/email.js
+  
+You can now serve these files with this simple URL:
+  http://example.com/min/?g=js
+  
+
+GROUPS: SPECIFYING FILES OUTSIDE THE DOC_ROOT
+
+In the groupsConfig.php array, the "//" in the file paths is a shortcut for
+the DOCUMENT_ROOT, but you can also specify paths from the root of the filesystem
+or relative to the DOC_ROOT: 
+
+return array(
+    'js' => array(
+        '//js/file.js'            // file within DOC_ROOT
+        ,'//../file.js'           // file in parent directory of DOC_ROOT
+        ,'C:/Users/Steve/file.js' // file anywhere on filesystem
+    )
+);
+
+
+FAR-FUTURE EXPIRES HEADERS
+
+Minify can send far-future (one year) Expires headers. To enable this you must
+add a number to the querystring (e.g. /min/?g=js&1234 or /min/f=file.js&1234) 
+and alter it whenever a source file is changed. If you have a build process you 
+can use a build/source control revision number.
+
+If you serve files as a group, you can use the utility function Minify_groupUri()
+to get a "versioned" Minify URI for use in your HTML. E.g.:
+
+<?php
+// add /min/lib to your include_path first!
+require $_SERVER['DOCUMENT_ROOT'] . '/min/utils.php';
+
+$jsUri = Minify_groupUri('js'); 
+echo "<script type='text/javascript' src='{$jsUri}'></script>";
+
+
+DEBUG MODE
+
+In debug mode, instead of compressing files, Minify sends combined files with
+comments prepended to each line to show the line number in the original source
+file. To enable this, set $min_allowDebugFlag to true in config.php and append
+"&debug=1" to your URIs. E.g. /min/?f=script1.js,script2.js&debug=1
+
+Known issue: files with comment-like strings/regexps can cause problems in this mode.
+
+
+QUESTIONS?
+
+http://groups.google.com/group/minify
Index: moodle/lib/minify/builder/_index.js
--- moodle/lib/minify/builder/_index.js No Base Revision
+++ moodle/lib/minify/builder/_index.js Locally New
@@ -0,0 +1,242 @@
+var MUB = {
+    _uid : 0
+    ,_minRoot : '/min/?'
+    ,checkRewrite : function () {
+        var testUri = location.pathname.replace(/\/[^\/]*$/, '/rewriteTest.js').substr(1);
+        function fail() {
+            $('#minRewriteFailed')[0].className = 'topNote';
+        };
+        $.ajax({
+            url : '../f=' + testUri + '&' + (new Date()).getTime()
+            ,success : function (data) {
+                if (data === '1') {
+                    MUB._minRoot = '/min/';
+                    $('span.minRoot').html('/min/');
+                } else
+                    fail();                
+            }
+            ,error : fail
+        });
+    }
+    /**
+     * Get markup for new source LI element
+     */
+    ,newLi : function () {
+        return '<li id="li' + MUB._uid + '">http://' + location.host + '/<input type=text size=20>' 
+        + ' <button title="Remove">x</button> <button title="Include Earlier">&uarr;</button>'
+        + ' <button title="Include Later">&darr;</button> <span></span></li>';
+    }
+    /**
+     * Add new empty source LI and attach handlers to buttons
+     */
+    ,addLi : function () {
+        $('#sources').append(MUB.newLi());
+        var li = $('#li' + MUB._uid)[0];
+        $('button[title=Remove]', li).click(function () {
+            $('#results').hide();
+            var hadValue = !!$('input', li)[0].value;
+            $(li).remove();
+        });
+        $('button[title$=Earlier]', li).click(function () {
+            $(li).prev('li').find('input').each(function () {
+                $('#results').hide();
+                // this = previous li input
+                var tmp = this.value;
+                this.value = $('input', li).val();
+                $('input', li).val(tmp);
+                MUB.updateAllTestLinks();
+            });
+        });
+        $('button[title$=Later]', li).click(function () {
+            $(li).next('li').find('input').each(function () {
+                $('#results').hide();
+                // this = next li input
+                var tmp = this.value;
+                this.value = $('input', li).val();
+                $('input', li).val(tmp);
+                MUB.updateAllTestLinks();
+            });
+        });
+        ++MUB._uid;
+    }
+    /**
+     * In the context of a source LI element, this will analyze the URI in
+     * the INPUT and check the URL on the site.
+     */
+    ,liUpdateTestLink : function () { // call in context of li element
+        if (! $('input', this)[0].value) 
+            return;
+        var li = this;
+        $('span', this).html('');
+        var url = 'http://' + location.host + '/' 
+                + $('input', this)[0].value.replace(/^\//, '');
+        $.ajax({
+            url : url
+            ,complete : function (xhr, stat) {
+                if ('success' == stat)
+                    $('span', li).html('&#x2713;');
+                else {
+                    $('span', li).html('<button><b>404! </b> recheck</button>')
+                        .find('button').click(function () {
+                            MUB.liUpdateTestLink.call(li);
+                        });
+                }
+            }
+            ,dataType : 'text'
+        });
+    }
+    /**
+     * Check all source URLs
+     */
+    ,updateAllTestLinks : function () {
+        $('#sources li').each(MUB.liUpdateTestLink);
+    }
+    /**
+     * In a given array of strings, find the character they all have at
+     * a particular index
+     * @param Array arr array of strings
+     * @param Number pos index to check
+     * @return mixed a common char or '' if any do not match
+     */
+    ,getCommonCharAtPos : function (arr, pos) {
+        var i
+           ,l = arr.length
+           ,c = arr[0].charAt(pos);
+        if (c === '' || l === 1)
+            return c;
+        for (i = 1; i < l; ++i)
+            if (arr[i].charAt(pos) !== c)
+                return '';
+        return c;
+    }
+    /**
+     * Get the shortest URI to minify the set of source files
+     * @param Array sources URIs
+     */
+    ,getBestUri : function (sources) {
+        var pos = 0
+           ,base = ''
+           ,c;
+        while (true) {
+            c = MUB.getCommonCharAtPos(sources, pos);
+            if (c === '')
+                break;
+            else
+                base += c;
+            ++pos;
+        }
+        base = base.replace(/[^\/]+$/, '');
+        var uri = MUB._minRoot + 'f=' + sources.join(',');
+        if (base.charAt(base.length - 1) === '/') {
+            // we have a base dir!
+            var basedSources = sources
+               ,i
+               ,l = sources.length;
+            for (i = 0; i < l; ++i) {
+                basedSources[i] = sources[i].substr(base.length);
+            }
+            base = base.substr(0, base.length - 1);
+            var bUri = MUB._minRoot + 'b=' + base + '&f=' + basedSources.join(',');
+            //window.console && console.log([uri, bUri]);
+            uri = uri.length < bUri.length
+                ? uri
+                : bUri;
+        }
+        return uri;
+    }
+    /**
+     * Create the Minify URI for the sources
+     */
+    ,update : function () {
+        MUB.updateAllTestLinks();
+        var sources = []
+           ,ext = false
+           ,fail = false;
+        $('#sources input').each(function () {
+            var m, val;
+            if (! fail && this.value && (m = this.value.match(/\.(css|js)$/))) {
+                var thisExt = m[1];
+                if (ext === false)
+                    ext = thisExt; 
+                else if (thisExt !== ext) {
+                    fail = true;
+                    return alert('extensions must match!');
+                }
+                this.value = this.value.replace(/^\//, '');
+                if (-1 != $.inArray(this.value, sources)) {
+                    fail = true;
+                    return alert('duplicate file!');
+                }
+                sources.push(this.value);
+            } 
+        });
+        if (fail || ! sources.length)
+            return;
+        $('#groupConfig').val("    'keyName' => array('//" + sources.join("', '//") + "'),");
+        var uri = MUB.getBestUri(sources)
+           ,uriH = uri.replace(/</, '&lt;').replace(/>/, '&gt;').replace(/&/, '&amp;');
+        $('#uriA').html(uriH)[0].href = uri;
+        $('#uriHtml').val(
+            ext === 'js' 
+            ? '<script type="text/javascript" src="' + uriH + '"></script>'
+            : '<link type="text/css" rel="stylesheet" href="' + uriH + '" />'
+        );
+        $('#results').show();
+    }
+    /**
+     * Handler for the "Add file +" button
+     */
+    ,addButtonClick : function () {
+        $('#results').hide();
+        MUB.addLi();
+        MUB.updateAllTestLinks();
+        $('#update').show().click(MUB.update);
+        $('#sources li:last input')[0].focus();
+    }
+    /**
+     * Runs on DOMready
+     */
+    ,init : function () {
+        $('#app').show();
+        $('#sources').html('');
+        $('#add button').click(MUB.addButtonClick);
+        // make easier to copy text out of
+        $('#uriHtml, #groupConfig').click(function () {
+            this.select();
+        }).focus(function () {
+            this.select();
+        });
+        $('a.ext').attr({target:'_blank'});
+        if (location.hash) {
+            // make links out of URIs from bookmarklet
+            $('#getBm').hide();
+            $('#bmUris').html('<p><strong>Found by bookmarklet:</strong> /<a href=#>'
+                + location.hash.substr(1).split(',').join('</a> | /<a href=#>')
+                + '</a></p>'
+            );
+            $('#bmUris a').click(function () {
+                MUB.addButtonClick();
+                $('#sources li:last input').val(this.innerHTML)
+                MUB.liUpdateTestLink.call($('#sources li:last')[0]);
+                $('#results').hide();
+                return false;
+            }).attr({title:'Add file +'});
+        } else {
+            // copy bookmarklet code into href
+            var bmUri = location.pathname.replace(/\/[^\/]*$/, '/bm.js').substr(1);
+            $.ajax({
+                url : '../?f=' + bmUri
+                ,success : function (code) {
+                    $('#bm')[0].href = code
+                        .replace('%BUILDER_URL%', location.href)
+                        .replace(/\n/g, ' ');
+                }
+                ,dataType : 'text'
+            });
+            $.browser.msie && $('#getBm p:last').append(' Sorry, not supported in MSIE!');
+            MUB.addButtonClick();
+        }
+        MUB.checkRewrite();
+    }
+};
+window.onload = MUB.init;
Index: moodle/lib/minify/builder/bm.js
--- moodle/lib/minify/builder/bm.js No Base Revision
+++ moodle/lib/minify/builder/bm.js Locally New
@@ -0,0 +1,36 @@
+javascript:(function() {
+    var d = document
+       ,uris = []
+       ,i = 0
+       ,o
+       ,home = (location + '').split('/').splice(0, 3).join('/') + '/';
+    function add(uri) {
+        return (0 === uri.indexOf(home))
+            && (!/[\?&]/.test(uri))
+            && uris.push(escape(uri.substr(home.length)));
+    };
+    function sheet(ss) {
+        // we must check the domain with add() before accessing ss.cssRules
+        // otherwise a security exception will be thrown
+        if (ss.href && add(ss.href) && ss.cssRules) {
+            var i = 0, r;
+            while (r = ss.cssRules[i++])
+                r.styleSheet && sheet(r.styleSheet);
+        }
+    };
+    while (o = d.getElementsByTagName('script')[i++])
+        o.src && !(o.type && /vbs/i.test(o.type)) && add(o.src);
+    i = 0;
+    while (o = d.styleSheets[i++])
+    /* http://www.w3.org/TR/DOM-Level-2-Style/stylesheets.html#StyleSheets-DocumentStyle-styleSheets
+    document.styleSheet is a list property where [0] accesses the 1st element and 
+    [outOfRange] returns null. In IE, styleSheets is a function, and also throws an 
+    exception when you check the out of bounds index. (sigh) */
+        sheet(o);
+    if (uris.length)
+        window.open('%BUILDER_URL%#' + uris.join(','));
+    else
+        alert('No js/css files found with URLs within "' 
+            + home.split('/')[2]
+            + '".\n(This tool is limited to URLs with the same domain.)');
+})();
Index: moodle/lib/minify/builder/index.php
--- moodle/lib/minify/builder/index.php No Base Revision
+++ moodle/lib/minify/builder/index.php Locally New
@@ -0,0 +1,182 @@
+<?php 
+
+if (phpversion() < 5) {
+    exit('Minify requires PHP5 or greater.');
+}
+
+// check for auto-encoding
+$encodeOutput = (function_exists('gzdeflate')
+                 && !ini_get('zlib.output_compression'));
+
+require dirname(__FILE__) . '/../config.php';
+
+if (! $min_enableBuilder) {
+    header('Location: /');
+    exit();
+}
+
+ob_start();
+?>
+<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
+<head>
+    <meta name="ROBOTS" content="NOINDEX, NOFOLLOW">
+    <title>Minify URI Builder</title>
+    <style type="text/css">
+body {margin:1em 60px;}
+h1, h2, h3 {margin-left:-25px; position:relative;}
+h1 {margin-top:0;}
+#sources {margin:0; padding:0;}
+#sources li {margin:0 0 0 40px}
+#sources li input {margin-left:2px}
+#add {margin:5px 0 1em 40px}
+.hide {display:none}
+#uriTable {border-collapse:collapse;}
+#uriTable td, #uriTable th {padding-top:10px;}
+#uriTable th {padding-right:10px;}
+#groupConfig {font-family:monospace;}
+b {color:#c00}
+.topNote {background: #ff9; display:inline-block; padding:.5em .6em; margin:0 0 1em;}
+.topWarning {background:#c00; color:#fff; padding:.5em .6em; margin:0 0 1em;}
+    </style>
+</head>
+
+<?php if (! isset($min_cachePath)): ?>
+<p class=topNote><strong>Note:</strong> Please set <code>$min_cachePath</code> 
+in /min/config.php to improve performance.</p>
+<?php endIf; ?>
+
+<p id=minRewriteFailed class="hide"><strong>Note:</strong> Your webserver does not seem to
+ support mod_rewrite (used in /min/.htaccess). Your Minify URIs will contain "?", which 
+<a href="http://www.stevesouders.com/blog/2008/08/23/revving-filenames-dont-use-querystring/"
+>may reduce the benefit of proxy cache servers</a>.</p>
+
+<h1>Minify URI Builder</h1>
+
+<noscript><p class="topNote">Javascript and a browser supported by jQuery 1.2.6 is required
+for this application.</p></noscript>
+
+<div id=app class=hide>
+
+<p>Create a list of Javascript or CSS files (or 1 is fine) you'd like to combine
+and click [Update].</p>
+
+<ol id=sources><li></li></ol>
+<div id=add><button>Add file +</button></div>
+
+<div id=bmUris></div>
+
+<p><button id=update class=hide>Update</button></p>
+
+<div id=results class=hide>
+
+<h2>Minify URI</h2>
+<p>Place this URI in your HTML to serve the files above combined, minified, compressed and
+with cache headers.</p>
+<table id=uriTable>
+    <tr><th>URI</th><td><a id=uriA class=ext>/min</a> <small>(opens in new window)</small></td></tr>
+    <tr><th>HTML</th><td><input id=uriHtml type=text size=100 readonly></td></tr>
+</table>
+
+<h2>How to serve these files as a group</h2>
+<p>For the best performance you can serve these files as a pre-defined group with a URI
+like: <code><span class=minRoot>/min/?</span>g=keyName</code></p>
+<p>To do this, add a line like this to /min/groupsConfig.php:</p>
+
+<pre><code>return array(
+    <span style="color:#666">... your existing groups here ...</span>
+<input id=groupConfig size=100 type=text readonly>
+);</code></pre>
+
+<p><em>Make sure to replace <code>keyName</code> with a unique key for this group.</em></p>
+</div>
+
+<div id=getBm>
+<h3>Find URIs on a Page</h3>
+<p>You can use the bookmarklet below to fetch all CSS &amp; Javascript URIs from a page
+on your site. When you active it, this page will open in a new window with a list of
+available URIs to add.</p>
+
+<p><a id=bm>Create Minify URIs</a> <small>(right-click, add to bookmarks)</small></p>
+</div>
+
+<h3>Combining CSS files that contain <code>@import</code></h3>
+<p>If your CSS files contain <code>@import</code> declarations, Minify will not 
+remove them. Therefore, you will want to remove those that point to files already
+in your list, and move any others to the top of the first file in your list 
+(imports below any styles will be ignored by browsers as invalid).</p>
+<p>If you desire, you can use Minify URIs in imports and they will not be touched
+by Minify. E.g. <code>@import "<span class=minRoot>/min/?</span>g=css2";</code></p>
+
+</div><!-- #app -->
+
+<hr>
+<p>Need help? Search or post to the <a class=ext 
+href="http://groups.google.com/group/minify">Minify discussion list</a>.</p>
+<p><small>This app is minified :) <a class=ext 
+href="http://code.google.com/p/minify/source/browse/trunk/min/builder/index.php">view 
+source</a></small></p>
+
+<script type="text/javascript" 
+src="http://ajax.googleapis.com/ajax/libs/jquery/1.2.6/jquery.min.js"></script>
+
+<script type="text/javascript">
+$(function () {
+    // detection of double output encoding
+    var msg = '<\p class=topWarning><\strong>Warning:<\/strong> ';
+    var url = 'ocCheck.php?' + (new Date()).getTime();
+    $.get(url, function (ocStatus) {
+        $.get(url + '&hello=1', function (ocHello) {
+            if (ocHello != 'World!') {
+                msg += 'It appears output is being automatically compressed, interfering ' 
+                     + ' with Minify\'s own compression. ';
+                if (ocStatus == '1')
+                    msg += 'The option "zlib.output_compression" is enabled in your PHP configuration. '
+                         + 'Minify set this to "0", but it had no effect. This option must be disabled ' 
+                         + 'in php.ini or .htaccess.';
+                else
+                    msg += 'The option "zlib.output_compression" is disabled in your PHP configuration '
+                         + 'so this behavior is likely due to a server option.';
+                $(document.body).prepend(msg + '<\/p>');
+            } else
+                if (ocStatus == '1')
+                    $(document.body).prepend('<\p class=topNote><\strong>Note:</\strong> The option '
+                        + '"zlib.output_compression" is enabled in your PHP configuration, but has been '
+                        + 'successfully disabled via ini_set(). If you experience mangled output you '
+                        + 'may want to consider disabling this option in your PHP configuration.<\/p>'
+                    );
+        });
+    });
+});
+</script>
+<script type="text/javascript">
+    // workaround required to test when /min isn't child of web root
+    var src = location.pathname.replace(/\/[^\/]*$/, '/_index.js').substr(1);
+    document.write('<\script type="text/javascript" src="../?f=' + src + '"><\/script>');
+</script>
+
+<?php
+
+$serveOpts = array(
+    'content' => ob_get_contents()
+    ,'id' => __FILE__
+    ,'lastModifiedTime' => max(
+        // regenerate cache if either of these change
+        filemtime(__FILE__)
+        ,filemtime(dirname(__FILE__) . '/../config.php')
+    )
+    ,'minifyAll' => true
+    ,'encodeOutput' => $encodeOutput
+);
+ob_end_clean();
+
+set_include_path(dirname(__FILE__) . '/../lib' . PATH_SEPARATOR . get_include_path());
+
+require 'Minify.php';
+
+if (0 === stripos(PHP_OS, 'win')) {
+    Minify::setDocRoot(); // we may be on IIS
+}
+Minify::setCache(isset($min_cachePath) ? $min_cachePath : null);
+Minify::$uploaderHoursBehind = $min_uploaderHoursBehind;
+
+Minify::serve('Page', $serveOpts);
Index: moodle/lib/minify/builder/ocCheck.php
--- moodle/lib/minify/builder/ocCheck.php No Base Revision
+++ moodle/lib/minify/builder/ocCheck.php Locally New
@@ -0,0 +1,36 @@
+<?php 
+/**
+ * AJAX checks for zlib.output_compression
+ * 
+ * @package Minify
+ */
+
+$_oc = ini_get('zlib.output_compression');
+ 
+// allow access only if builder is enabled
+require dirname(__FILE__) . '/../config.php';
+if (! $min_enableBuilder) {
+    header('Location: /');
+    exit();
+}
+
+if (isset($_GET['hello'])) {
+    // echo 'World!'
+    
+    // try to prevent double encoding (may not have an effect)
+    ini_set('zlib.output_compression', '0');
+    
+    require $min_libPath . '/HTTP/Encoder.php';
+    HTTP_Encoder::$encodeToIe6  = true; // just in case
+    $he = new HTTP_Encoder(array(
+        'content' => 'World!'
+        ,'method' => 'deflate'
+    ));
+    $he->encode();
+    $he->sendAll();
+
+} else {
+    // echo status "0" or "1"
+    header('Content-Type: text/plain');
+    echo (int)$_oc;
+}
Index: moodle/lib/minify/builder/rewriteTest.js
--- moodle/lib/minify/builder/rewriteTest.js No Base Revision
+++ moodle/lib/minify/builder/rewriteTest.js Locally New
@@ -0,0 +1 @@
+1
Index: moodle/lib/minify/config.php
--- moodle/lib/minify/config.php No Base Revision
+++ moodle/lib/minify/config.php Locally New
@@ -0,0 +1,154 @@
+<?php
+/**
+ * Configuration for default Minify application
+ * @package Minify
+ */
+
+
+/**
+ * In 'debug' mode, Minify can combine files with no minification and 
+ * add comments to indicate line #s of the original files. 
+ * 
+ * To allow debugging, set this option to true and add "&debug=1" to 
+ * a URI. E.g. /min/?f=script1.js,script2.js&debug=1
+ */
+$min_allowDebugFlag = ($CFG->debug);
+
+
+/**
+ * Set to true to log messages to FirePHP (Firefox Firebug addon).
+ * Set to false for no error logging (Minify may be slightly faster).
+ * @link http://www.firephp.org/
+ *
+ * If you want to use a custom error logger, set this to your logger 
+ * instance. Your object should have a method log(string $message).
+ *
+ * @todo cache system does not have error logging yet.
+ */
+$min_errorLogger = false;
+
+
+/**
+ * Allow use of the Minify URI Builder app. If you no longer need 
+ * this, set to false.
+ **/
+$min_enableBuilder = true;
+
+
+/**
+ * For best performance, specify your temp directory here. Otherwise Minify
+ * will have to load extra code to guess. Some examples below:
+ */
+$min_cachePath = $CFG->dataroot.'/temp';
+
+
+/**
+ * Leave an empty string to use PHP's $_SERVER['DOCUMENT_ROOT'].
+ *
+ * On some servers, this value may be misconfigured or missing. If so, set this 
+ * to your full document root path with no trailing slash.
+ * E.g. '/home/accountname/public_html' or 'c:\\xampp\\htdocs'
+ *
+ * If /min/ is directly inside your document root, just uncomment the 
+ * second line. The third line might work on some Apache servers.
+ */
+$min_documentRoot = $CFG->dirroot.'/lib/minify';
+//$min_documentRoot = substr(__FILE__, 0, strlen(__FILE__) - 15);
+//$min_documentRoot = $_SERVER['SUBDOMAIN_DOCUMENT_ROOT'];
+
+
+/**
+ * Cache file locking. Set to false if filesystem is NFS. On at least one 
+ * NFS system flock-ing attempts stalled PHP for 30 seconds!
+ */
+$min_cacheFileLocking = true;
+
+
+/**
+ * Combining multiple CSS files can place @import declarations after rules, which
+ * is invalid. Minify will attempt to detect when this happens and place a
+ * warning comment at the top of the CSS output. To resolve this you can either 
+ * move the @imports within your CSS files, or enable this option, which will 
+ * move all @imports to the top of the output. Note that moving @imports could 
+ * affect CSS values (which is why this option is disabled by default).
+ */
+$min_serveOptions['bubbleCssImports'] = false;
+
+
+/**
+ * Maximum age of browser cache in seconds. After this period, the browser
+ * will send another conditional GET. Use a longer period for lower traffic
+ * but you may want to shorten this before making changes if it's crucial
+ * those changes are seen immediately.
+ *
+ * Note: Despite this setting, if you include a number at the end of the
+ * querystring, maxAge will be set to one year. E.g. /min/f=hello.css&123456
+ */
+$min_serveOptions['maxAge'] = 1800;
+
+
+/**
+ * If you'd like to restrict the "f" option to files within/below
+ * particular directories below DOCUMENT_ROOT, set this here.
+ * You will still need to include the directory in the
+ * f or b GET parameters.
+ * 
+ * // = shortcut for DOCUMENT_ROOT 
+ */
+//$min_serveOptions['minApp']['allowDirs'] = array('//js', '//css');
+
+/**
+ * Set to true to disable the "f" GET parameter for specifying files.
+ * Only the "g" parameter will be considered.
+ */
+$min_serveOptions['minApp']['groupsOnly'] = true;
+
+/**
+ * Maximum # of files that can be specified in the "f" GET parameter
+ */
+$min_serveOptions['minApp']['maxFiles'] = 10;
+
+
+/**
+ * If you minify CSS files stored in symlink-ed directories, the URI rewriting
+ * algorithm can fail. To prevent this, provide an array of link paths to
+ * target paths, where the link paths are within the document root.
+ * 
+ * Because paths need to be normalized for this to work, use "//" to substitute 
+ * the doc root in the link paths (the array keys). E.g.:
+ * <code>
+ * array('//symlink' => '/real/target/path') // unix
+ * array('//static' => 'D:\\staticStorage')  // Windows
+ * </code>
+ */
+$min_symlinks = array();
+
+
+/**
+ * If you upload files from Windows to a non-Windows server, Windows may report
+ * incorrect mtimes for the files. This may cause Minify to keep serving stale 
+ * cache files when source file changes are made too frequently (e.g. more than
+ * once an hour).
+ * 
+ * Immediately after modifying and uploading a file, use the touch command to 
+ * update the mtime on the server. If the mtime jumps ahead by a number of hours,
+ * set this variable to that number. If the mtime moves back, this should not be 
+ * needed.
+ *
+ * In the Windows SFTP client WinSCP, there's an option that may fix this 
+ * issue without changing the variable below. Under login > environment, 
+ * select the option "Adjust remote timestamp with DST".
+ * @link http://winscp.net/eng/docs/ui_login_environment#daylight_saving_time
+ */
+$min_uploaderHoursBehind = 0;
+
+
+/**
+ * Path to Minify's lib folder. If you happen to move it, change 
+ * this accordingly.
+ */
+$min_libPath = $CFG->libdir . '/minify/lib';
+
+
+// try to disable output_compression (may not have an effect)
+ini_set('zlib.output_compression', '0');
Index: moodle/lib/minify/groupsConfig.php
--- moodle/lib/minify/groupsConfig.php No Base Revision
+++ moodle/lib/minify/groupsConfig.php Locally New
@@ -0,0 +1,34 @@
+<?php
+/**
+ * Groups configuration for default Minify implementation
+ * @package Minify
+ */
+
+/** 
+ * You may wish to use the Minify URI Builder app to suggest
+ * changes. http://yourdomain/min/builder/
+ **/
+
+return array(
+    // 'js' => array('//js/file1.js', '//js/file2.js'),
+    // 'css' => array('//css/file1.css', '//css/file2.css'),
+
+    // custom source example
+    /*'js2' => array(
+        dirname(__FILE__) . '/../min_unit_tests/_test_files/js/before.js',
+        // do NOT process this file
+        new Minify_Source(array(
+            'filepath' => dirname(__FILE__) . '/../min_unit_tests/_test_files/js/before.js',
+            'minifier' => create_function('$a', 'return $a;')
+        ))
+    ),//*/
+
+    /*'js3' => array(
+        dirname(__FILE__) . '/../min_unit_tests/_test_files/js/before.js',
+        // do NOT process this file
+        new Minify_Source(array(
+            'filepath' => dirname(__FILE__) . '/../min_unit_tests/_test_files/js/before.js',
+            'minifier' => array('Minify_Packer', 'minify')
+        ))
+    ),//*/
+);
Index: moodle/lib/minify/lib/FirePHP.php
--- moodle/lib/minify/lib/FirePHP.php No Base Revision
+++ moodle/lib/minify/lib/FirePHP.php Locally New
@@ -0,0 +1,1370 @@
+<?php
+/**
+ * *** BEGIN LICENSE BLOCK *****
+ *  
+ * This file is part of FirePHP (http://www.firephp.org/).
+ * 
+ * Software License Agreement (New BSD License)
+ * 
+ * Copyright (c) 2006-2008, Christoph Dorn
+ * All rights reserved.
+ * 
+ * Redistribution and use in source and binary forms, with or without modification,
+ * are permitted provided that the following conditions are met:
+ * 
+ *     * Redistributions of source code must retain the above copyright notice,
+ *       this list of conditions and the following disclaimer.
+ * 
+ *     * Redistributions in binary form must reproduce the above copyright notice,
+ *       this list of conditions and the following disclaimer in the documentation
+ *       and/or other materials provided with the distribution.
+ * 
+ *     * Neither the name of Christoph Dorn nor the names of its
+ *       contributors may be used to endorse or promote products derived from this
+ *       software without specific prior written permission.
+ * 
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
+ * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ * 
+ * ***** END LICENSE BLOCK *****
+ * 
+ * @copyright   Copyright (C) 2007-2008 Christoph Dorn
+ * @author      Christoph Dorn <christoph@christophdorn.com>
+ * @license     http://www.opensource.org/licenses/bsd-license.php
+ * @package     FirePHP
+ */
+ 
+ 
+/**
+ * Sends the given data to the FirePHP Firefox Extension.
+ * The data can be displayed in the Firebug Console or in the
+ * "Server" request tab.
+ * 
+ * For more information see: http://www.firephp.org/
+ * 
+ * @copyright   Copyright (C) 2007-2008 Christoph Dorn
+ * @author      Christoph Dorn <christoph@christophdorn.com>
+ * @license     http://www.opensource.org/licenses/bsd-license.php
+ * @package     FirePHP
+ */
+class FirePHP {
+  
+  /**
+   * FirePHP version
+   *
+   * @var string
+   */
+  const VERSION = '0.2.0';
+  
+  /**
+   * Firebug LOG level
+   *
+   * Logs a message to firebug console.
+   * 
+   * @var string
+   */
+  const LOG = 'LOG';
+  
+  /**
+   * Firebug INFO level
+   *
+   * Logs a message to firebug console and displays an info icon before the message.
+   * 
+   * @var string
+   */
+  const INFO = 'INFO';
+  
+  /**
+   * Firebug WARN level
+   *
+   * Logs a message to firebug console, displays an warning icon before the message and colors the line turquoise.
+   * 
+   * @var string
+   */
+  const WARN = 'WARN';
+  
+  /**
+   * Firebug ERROR level
+   *
+   * Logs a message to firebug console, displays an error icon before the message and colors the line yellow. Also increments the firebug error count.
+   * 
+   * @var string
+   */
+  const ERROR = 'ERROR';
+  
+  /**
+   * Dumps a variable to firebug's server panel
+   *
+   * @var string
+   */
+  const DUMP = 'DUMP';
+  
+  /**
+   * Displays a stack trace in firebug console
+   *
+   * @var string
+   */
+  const TRACE = 'TRACE';
+  
+  /**
+   * Displays an exception in firebug console
+   * 
+   * Increments the firebug error count.
+   *
+   * @var string
+   */
+  const EXCEPTION = 'EXCEPTION';
+  
+  /**
+   * Displays an table in firebug console
+   *
+   * @var string
+   */
+  const TABLE = 'TABLE';
+  
+  /**
+   * Starts a group in firebug console
+   * 
+   * @var string
+   */
+  const GROUP_START = 'GROUP_START';
+  
+  /**
+   * Ends a group in firebug console
+   * 
+   * @var string
+   */
+  const GROUP_END = 'GROUP_END';
+  
+  /**
+   * Singleton instance of FirePHP
+   *
+   * @var FirePHP
+   */
+  protected static $instance = null;
+  
+  /**
+   * Wildfire protocol message index
+   *
+   * @var int
+   */
+  protected $messageIndex = 1;
+    
+  /**
+   * Options for the library
+   * 
+   * @var array
+   */
+  protected $options = array();
+  
+  /**
+   * Filters used to exclude object members when encoding
+   * 
+   * @var array
+   */
+  protected $objectFilters = array();
+  
+  /**
+   * A stack of objects used to detect recursion during object encoding
+   * 
+   * @var object
+   */
+  protected $objectStack = array();
+  
+  /**
+   * Flag to enable/disable logging
+   * 
+   * @var boolean
+   */
+  protected $enabled = true;
+  
+  /**
+   * The object constructor
+   */
+  function __construct() {
+    $this->options['maxObjectDepth'] = 10;
+    $this->options['maxArrayDepth'] = 20;
+    $this->options['useNativeJsonEncode'] = true;
+    $this->options['includeLineNumbers'] = true;
+  }
+    
+  /**
+   * When the object gets serialized only include specific object members.
+   * 
+   * @return array
+   */  
+  public function __sleep() {
+    return array('options','objectFilters','enabled');
+  }
+    
+  /**
+   * Gets singleton instance of FirePHP
+   *
+   * @param boolean $AutoCreate
+   * @return FirePHP
+   */
+  public static function getInstance($AutoCreate=false) {
+    if($AutoCreate===true && !self::$instance) {
+      self::init();
+    }
+    return self::$instance;
+  }
+   
+  /**
+   * Creates FirePHP object and stores it for singleton access
+   *
+   * @return FirePHP
+   */
+  public static function init() {
+    return self::$instance = new self();
+  }
+  
+  /**
+   * Enable and disable logging to Firebug
+   * 
+   * @param boolean $Enabled TRUE to enable, FALSE to disable
+   * @return void
+   */
+  public function setEnabled($Enabled) {
+    $this->enabled = $Enabled;
+  }
+  
+  /**
+   * Check if logging is enabled
+   * 
+   * @return boolean TRUE if enabled
+   */
+  public function getEnabled() {
+    return $this->enabled;
+  }
+  
+  /**
+   * Specify a filter to be used when encoding an object
+   * 
+   * Filters are used to exclude object members.
+   * 
+   * @param string $Class The class name of the object
+   * @param array $Filter An array or members to exclude
+   * @return void
+   */
+  public function setObjectFilter($Class, $Filter) {
+    $this->objectFilters[$Class] = $Filter;
+  }
+  
+  /**
+   * Set some options for the library
+   * 
+   * Options:
+   *  - maxObjectDepth: The maximum depth to traverse objects (default: 10)
+   *  - maxArrayDepth: The maximum depth to traverse arrays (default: 20)
+   *  - useNativeJsonEncode: If true will use json_encode() (default: true)
+   *  - includeLineNumbers: If true will include line numbers and filenames (default: true)
+   * 
+   * @param array $Options The options to be set
+   * @return void
+   */
+  public function setOptions($Options) {
+    $this->options = array_merge($this->options,$Options);
+  }
+  
+  /**
+   * Register FirePHP as your error handler
+   * 
+   * Will throw exceptions for each php error.
+   */
+  public function registerErrorHandler()
+  {
+    //NOTE: The following errors will not be caught by this error handler:
+    //      E_ERROR, E_PARSE, E_CORE_ERROR,
+    //      E_CORE_WARNING, E_COMPILE_ERROR,
+    //      E_COMPILE_WARNING, E_STRICT
+    
+    set_error_handler(array($this,'errorHandler'));     
+  }
+
+  /**
+   * FirePHP's error handler
+   * 
+   * Throws exception for each php error that will occur.
+   *
+   * @param int $errno
+   * @param string $errstr
+   * @param string $errfile
+   * @param int $errline
+   * @param array $errcontext
+   */
+  public function errorHandler($errno, $errstr, $errfile, $errline, $errcontext)
+  {
+    // Don't throw exception if error reporting is switched off
+    if (error_reporting() == 0) {
+      return;
+    }
+    // Only throw exceptions for errors we are asking for
+    if (error_reporting() & $errno) {
+      throw new ErrorException($errstr, 0, $errno, $errfile, $errline);
+    }
+  }
+  
+  /**
+   * Register FirePHP as your exception handler
+   */
+  public function registerExceptionHandler()
+  {
+    set_exception_handler(array($this,'exceptionHandler'));     
+  }
+  
+  /**
+   * FirePHP's exception handler
+   * 
+   * Logs all exceptions to your firebug console and then stops the script.
+   *
+   * @param Exception $Exception
+   * @throws Exception
+   */
+  function exceptionHandler($Exception) {
+    $this->fb($Exception);
+  }
+  
+  /**
+   * Set custom processor url for FirePHP
+   *
+   * @param string $URL
+   */    
+  public function setProcessorUrl($URL)
+  {
+    $this->setHeader('X-FirePHP-ProcessorURL', $URL);
+  }
+
+  /**
+   * Set custom renderer url for FirePHP
+   *
+   * @param string $URL
+   */
+  public function setRendererUrl($URL)
+  {
+    $this->setHeader('X-FirePHP-RendererURL', $URL);
+  }
+  
+  /**
+   * Start a group for following messages
+   *
+   * @param string $Name
+   * @return true
+   * @throws Exception
+   */
+  public function group($Name) {
+    return $this->fb(null, $Name, FirePHP::GROUP_START);
+  }
+  
+  /**
+   * Ends a group you have started before
+   *
+   * @return true
+   * @throws Exception
+   */
+  public function groupEnd() {
+    return $this->fb(null, null, FirePHP::GROUP_END);
+  }
+
+  /**
+   * Log object with label to firebug console
+   *
+   * @see FirePHP::LOG
+   * @param mixes $Object
+   * @param string $Label
+   * @return true
+   * @throws Exception
+   */
+  public function log($Object, $Label=null) {
+    return $this->fb($Object, $Label, FirePHP::LOG);
+  } 
+
+  /**
+   * Log object with label to firebug console
+   *
+   * @see FirePHP::INFO
+   * @param mixes $Object
+   * @param string $Label
+   * @return true
+   * @throws Exception
+   */
+  public function info($Object, $Label=null) {
+    return $this->fb($Object, $Label, FirePHP::INFO);
+  } 
+
+  /**
+   * Log object with label to firebug console
+   *
+   * @see FirePHP::WARN
+   * @param mixes $Object
+   * @param string $Label
+   * @return true
+   * @throws Exception
+   */
+  public function warn($Object, $Label=null) {
+    return $this->fb($Object, $Label, FirePHP::WARN);
+  } 
+
+  /**
+   * Log object with label to firebug console
+   *
+   * @see FirePHP::ERROR
+   * @param mixes $Object
+   * @param string $Label
+   * @return true
+   * @throws Exception
+   */
+  public function error($Object, $Label=null) {
+    return $this->fb($Object, $Label, FirePHP::ERROR);
+  } 
+
+  /**
+   * Dumps key and variable to firebug server panel
+   *
+   * @see FirePHP::DUMP
+   * @param string $Key
+   * @param mixed $Variable
+   * @return true
+   * @throws Exception
+   */
+  public function dump($Key, $Variable) {
+    return $this->fb($Variable, $Key, FirePHP::DUMP);
+  }
+  
+  /**
+   * Log a trace in the firebug console
+   *
+   * @see FirePHP::TRACE
+   * @param string $Label
+   * @return true
+   * @throws Exception
+   */
+  public function trace($Label) {
+    return $this->fb($Label, FirePHP::TRACE);
+  } 
+
+  /**
+   * Log a table in the firebug console
+   *
+   * @see FirePHP::TABLE
+   * @param string $Label
+   * @param string $Table
+   * @return true
+   * @throws Exception
+   */
+  public function table($Label, $Table) {
+    return $this->fb($Table, $Label, FirePHP::TABLE);
+  }
+  
+  /**
+   * Check if FirePHP is installed on client
+   *
+   * @return boolean
+   */
+  public function detectClientExtension() {
+    /* Check if FirePHP is installed on client */
+    if(!@preg_match_all('/\sFirePHP\/([\.|\d]*)\s?/si',$this->getUserAgent(),$m) ||
+       !version_compare($m[1][0],'0.0.6','>=')) {
+      return false;
+    }
+    return true;    
+  }
+ 
+  /**
+   * Log varible to Firebug
+   * 
+   * @see http://www.firephp.org/Wiki/Reference/Fb
+   * @param mixed $Object The variable to be logged
+   * @return true Return TRUE if message was added to headers, FALSE otherwise
+   * @throws Exception
+   */
+  public function fb($Object) {
+  
+    if(!$this->enabled) {
+      return false;
+    }
+  
+    if (headers_sent($filename, $linenum)) {
+        throw $this->newException('Headers already sent in '.$filename.' on line '.$linenum.'. Cannot send log data to FirePHP. You must have Output Buffering enabled via ob_start() or output_buffering ini directive.');
+    }
+  
+    $Type = null;
+    $Label = null;
+  
+    if(func_num_args()==1) {
+    } else
+    if(func_num_args()==2) {
+      switch(func_get_arg(1)) {
+        case self::LOG:
+        case self::INFO:
+        case self::WARN:
+        case self::ERROR:
+        case self::DUMP:
+        case self::TRACE:
+        case self::EXCEPTION:
+        case self::TABLE:
+        case self::GROUP_START:
+        case self::GROUP_END:
+          $Type = func_get_arg(1);
+          break;
+        default:
+          $Label = func_get_arg(1);
+          break;
+      }
+    } else
+    if(func_num_args()==3) {
+      $Type = func_get_arg(2);
+      $Label = func_get_arg(1);
+    } else {
+      throw $this->newException('Wrong number of arguments to fb() function!');
+    }
+  
+  
+    if(!$this->detectClientExtension()) {
+      return false;
+    }
+  
+    $meta = array();
+    $skipFinalObjectEncode = false;
+  
+    if($Object instanceof Exception) {
+
+      $meta['file'] = $this->_escapeTraceFile($Object->getFile());
+      $meta['line'] = $Object->getLine();
+      
+      $trace = $Object->getTrace();
+      if($Object instanceof ErrorException
+         && isset($trace[0]['function'])
+         && $trace[0]['function']=='errorHandler'
+         && isset($trace[0]['class'])
+         && $trace[0]['class']=='FirePHP') {
+           
+        $severity = false;
+        switch($Object->getSeverity()) {
+          case E_WARNING: $severity = 'E_WARNING'; break;
+          case E_NOTICE: $severity = 'E_NOTICE'; break;
+          case E_USER_ERROR: $severity = 'E_USER_ERROR'; break;
+          case E_USER_WARNING: $severity = 'E_USER_WARNING'; break;
+          case E_USER_NOTICE: $severity = 'E_USER_NOTICE'; break;
+          case E_STRICT: $severity = 'E_STRICT'; break;
+          case E_RECOVERABLE_ERROR: $severity = 'E_RECOVERABLE_ERROR'; break;
+          case E_DEPRECATED: $severity = 'E_DEPRECATED'; break;
+          case E_USER_DEPRECATED: $severity = 'E_USER_DEPRECATED'; break;
+        }
+           
+        $Object = array('Class'=>get_class($Object),
+                        'Message'=>$severity.': '.$Object->getMessage(),
+                        'File'=>$this->_escapeTraceFile($Object->getFile()),
+                        'Line'=>$Object->getLine(),
+                        'Type'=>'trigger',
+                        'Trace'=>$this->_escapeTrace(array_splice($trace,2)));
+        $skipFinalObjectEncode = true;
+      } else {
+        $Object = array('Class'=>get_class($Object),
+                        'Message'=>$Object->getMessage(),
+                        'File'=>$this->_escapeTraceFile($Object->getFile()),
+                        'Line'=>$Object->getLine(),
+                        'Type'=>'throw',
+                        'Trace'=>$this->_escapeTrace($trace));
+        $skipFinalObjectEncode = true;
+      }
+      $Type = self::EXCEPTION;
+      
+    } else
+    if($Type==self::TRACE) {
+      
+      $trace = debug_backtrace();
+      if(!$trace) return false;
+      for( $i=0 ; $i<sizeof($trace) ; $i++ ) {
+
+        if(isset($trace[$i]['class'])
+           && isset($trace[$i]['file'])
+           && ($trace[$i]['class']=='FirePHP'
+               || $trace[$i]['class']=='FB')
+           && (substr($this->_standardizePath($trace[$i]['file']),-18,18)=='FirePHPCore/fb.php'
+               || substr($this->_standardizePath($trace[$i]['file']),-29,29)=='FirePHPCore/FirePHP.class.php')) {
+          /* Skip - FB::trace(), FB::send(), $firephp->trace(), $firephp->fb() */
+        } else
+        if(isset($trace[$i]['class'])
+           && isset($trace[$i+1]['file'])
+           && $trace[$i]['class']=='FirePHP'
+           && substr($this->_standardizePath($trace[$i+1]['file']),-18,18)=='FirePHPCore/fb.php') {
+          /* Skip fb() */
+        } else
+        if($trace[$i]['function']=='fb'
+           || $trace[$i]['function']=='trace'
+           || $trace[$i]['function']=='send') {
+          $Object = array('Class'=>isset($trace[$i]['class'])?$trace[$i]['class']:'',
+                          'Type'=>isset($trace[$i]['type'])?$trace[$i]['type']:'',
+                          'Function'=>isset($trace[$i]['function'])?$trace[$i]['function']:'',
+                          'Message'=>$trace[$i]['args'][0],
+                          'File'=>isset($trace[$i]['file'])?$this->_escapeTraceFile($trace[$i]['file']):'',
+                          'Line'=>isset($trace[$i]['line'])?$trace[$i]['line']:'',
+                          'Args'=>isset($trace[$i]['args'])?$this->encodeObject($trace[$i]['args']):'',
+                          'Trace'=>$this->_escapeTrace(array_splice($trace,$i+1)));
+
+          $skipFinalObjectEncode = true;
+          $meta['file'] = isset($trace[$i]['file'])?$this->_escapeTraceFile($trace[$i]['file']):'';
+          $meta['line'] = isset($trace[$i]['line'])?$trace[$i]['line']:'';
+          break;
+        }
+      }
+
+    } else
+    if($Type==self::TABLE) {
+      
+      if(isset($Object[0]) && is_string($Object[0])) {
+        $Object[1] = $this->encodeTable($Object[1]);
+      } else {
+        $Object = $this->encodeTable($Object);
+      }
+
+      $skipFinalObjectEncode = true;
+      
+    } else {
+      if($Type===null) {
+        $Type = self::LOG;
+      }
+    }
+    
+    if($this->options['includeLineNumbers']) {
+      if(!isset($meta['file']) || !isset($meta['line'])) {
+
+        $trace = debug_backtrace();
+        for( $i=0 ; $trace && $i<sizeof($trace) ; $i++ ) {
+  
+          if(isset($trace[$i]['class'])
+             && isset($trace[$i]['file'])
+             && ($trace[$i]['class']=='FirePHP'
+                 || $trace[$i]['class']=='FB')
+             && (substr($this->_standardizePath($trace[$i]['file']),-18,18)=='FirePHPCore/fb.php'
+                 || substr($this->_standardizePath($trace[$i]['file']),-29,29)=='FirePHPCore/FirePHP.class.php')) {
+            /* Skip - FB::trace(), FB::send(), $firephp->trace(), $firephp->fb() */
+          } else
+          if(isset($trace[$i]['class'])
+             && isset($trace[$i+1]['file'])
+             && $trace[$i]['class']=='FirePHP'
+             && substr($this->_standardizePath($trace[$i+1]['file']),-18,18)=='FirePHPCore/fb.php') {
+            /* Skip fb() */
+          } else
+          if(isset($trace[$i]['file'])
+             && substr($this->_standardizePath($trace[$i]['file']),-18,18)=='FirePHPCore/fb.php') {
+            /* Skip FB::fb() */
+          } else {
+            $meta['file'] = isset($trace[$i]['file'])?$this->_escapeTraceFile($trace[$i]['file']):'';
+            $meta['line'] = isset($trace[$i]['line'])?$trace[$i]['line']:'';
+            break;
+          }
+        }      
+      
+      }
+    } else {
+      unset($meta['file']);
+      unset($meta['line']);
+    }
+
+  	$this->setHeader('X-Wf-Protocol-1','http://meta.wildfirehq.org/Protocol/JsonStream/0.2');
+  	$this->setHeader('X-Wf-1-Plugin-1','http://meta.firephp.org/Wildfire/Plugin/FirePHP/Library-FirePHPCore/'.self::VERSION);
+ 
+    $structure_index = 1;
+    if($Type==self::DUMP) {
+      $structure_index = 2;
+    	$this->setHeader('X-Wf-1-Structure-2','http://meta.firephp.org/Wildfire/Structure/FirePHP/Dump/0.1');
+    } else {
+    	$this->setHeader('X-Wf-1-Structure-1','http://meta.firephp.org/Wildfire/Structure/FirePHP/FirebugConsole/0.1');
+    }
+  
+    if($Type==self::DUMP) {
+    	$msg = '{"'.$Label.'":'.$this->jsonEncode($Object, $skipFinalObjectEncode).'}';
+    } else {
+      $msg_meta = array('Type'=>$Type);
+      if($Label!==null) {
+        $msg_meta['Label'] = $Label;
+      }
+      if(isset($meta['file'])) {
+        $msg_meta['File'] = $meta['file'];
+      }
+      if(isset($meta['line'])) {
+        $msg_meta['Line'] = $meta['line'];
+      }
+    	$msg = '['.$this->jsonEncode($msg_meta).','.$this->jsonEncode($Object, $skipFinalObjectEncode).']';
+    }
+    
+    $parts = explode("\n",chunk_split($msg, 5000, "\n"));
+
+    for( $i=0 ; $i<count($parts) ; $i++) {
+        
+        $part = $parts[$i];
+        if ($part) {
+            
+            if(count($parts)>2) {
+              // Message needs to be split into multiple parts
+              $this->setHeader('X-Wf-1-'.$structure_index.'-'.'1-'.$this->messageIndex,
+                               (($i==0)?strlen($msg):'')
+                               . '|' . $part . '|'
+                               . (($i<count($parts)-2)?'\\':''));
+            } else {
+              $this->setHeader('X-Wf-1-'.$structure_index.'-'.'1-'.$this->messageIndex,
+                               strlen($part) . '|' . $part . '|');
+            }
+            
+            $this->messageIndex++;
+            
+            if ($this->messageIndex > 99999) {
+                throw new Exception('Maximum number (99,999) of messages reached!');             
+            }
+        }
+    }
+
+  	$this->setHeader('X-Wf-1-Index',$this->messageIndex-1);
+
+    return true;
+  }
+  
+  /**
+   * Standardizes path for windows systems.
+   *
+   * @param string $Path
+   * @return string
+   */
+  protected function _standardizePath($Path) {
+    return preg_replace('/\\\\+/','/',$Path);    
+  }
+  
+  /**
+   * Escape trace path for windows systems
+   *
+   * @param array $Trace
+   * @return array
+   */
+  protected function _escapeTrace($Trace) {
+    if(!$Trace) return $Trace;
+    for( $i=0 ; $i<sizeof($Trace) ; $i++ ) {
+      if(isset($Trace[$i]['file'])) {
+        $Trace[$i]['file'] = $this->_escapeTraceFile($Trace[$i]['file']);
+      }
+      if(isset($Trace[$i]['args'])) {
+        $Trace[$i]['args'] = $this->encodeObject($Trace[$i]['args']);
+      }
+    }
+    return $Trace;    
+  }
+  
+  /**
+   * Escape file information of trace for windows systems
+   *
+   * @param string $File
+   * @return string
+   */
+  protected function _escapeTraceFile($File) {
+    /* Check if we have a windows filepath */
+    if(strpos($File,'\\')) {
+      /* First strip down to single \ */
+      
+      $file = preg_replace('/\\\\+/','\\',$File);
+      
+      return $file;
+    }
+    return $File;
+  }
+
+  /**
+   * Send header
+   *
+   * @param string $Name
+   * @param string_type $Value
+   */
+  protected function setHeader($Name, $Value) {
+    return header($Name.': '.$Value);
+  }
+
+  /**
+   * Get user agent
+   *
+   * @return string|false
+   */
+  protected function getUserAgent() {
+    if(!isset($_SERVER['HTTP_USER_AGENT'])) return false;
+    return $_SERVER['HTTP_USER_AGENT'];
+  }
+
+  /**
+   * Returns a new exception
+   *
+   * @param string $Message
+   * @return Exception
+   */
+  protected function newException($Message) {
+    return new Exception($Message);
+  }
+  
+  /**
+   * Encode an object into a JSON string
+   * 
+   * Uses PHP's jeson_encode() if available
+   * 
+   * @param object $Object The object to be encoded
+   * @return string The JSON string
+   */
+  protected function jsonEncode($Object, $skipObjectEncode=false)
+  {
+    if(!$skipObjectEncode) {
+      $Object = $this->encodeObject($Object);
+    }
+    
+    if(function_exists('json_encode')
+       && $this->options['useNativeJsonEncode']!=false) {
+
+      return json_encode($Object);
+    } else {
+      return $this->json_encode($Object);
+    }
+  }
+  
+  /**
+   * Encodes a table by encoding each row and column with encodeObject()
+   * 
+   * @param array $Table The table to be encoded
+   * @return array
+   */  
+  protected function encodeTable($Table) {
+    if(!$Table) return $Table;
+    for( $i=0 ; $i<count($Table) ; $i++ ) {
+      if(is_array($Table[$i])) {
+        for( $j=0 ; $j<count($Table[$i]) ; $j++ ) {
+          $Table[$i][$j] = $this->encodeObject($Table[$i][$j]);
+        }
+      }
+    }
+    return $Table;
+  }
+  
+  /**
+   * Encodes an object including members with
+   * protected and private visibility
+   * 
+   * @param Object $Object The object to be encoded
+   * @param int $Depth The current traversal depth
+   * @return array All members of the object
+   */
+  protected function encodeObject($Object, $ObjectDepth = 1, $ArrayDepth = 1)
+  {
+    $return = array();
+    
+    if (is_object($Object)) {
+
+        if ($ObjectDepth > $this->options['maxObjectDepth']) {
+          return '** Max Object Depth ('.$this->options['maxObjectDepth'].') **';
+        }
+        
+        foreach ($this->objectStack as $refVal) {
+            if ($refVal === $Object) {
+                return '** Recursion ('.get_class($Object).') **';
+            }
+        }
+        array_push($this->objectStack, $Object);
+                
+        $return['__className'] = $class = get_class($Object);
+
+        $reflectionClass = new ReflectionClass($class);  
+        $properties = array();
+        foreach( $reflectionClass->getProperties() as $property) {
+          $properties[$property->getName()] = $property;
+        }
+            
+        $members = (array)$Object;
+            
+        foreach( $properties as $raw_name => $property ) {
+          
+          $name = $raw_name;
+          if($property->isStatic()) {
+            $name = 'static:'.$name;
+          }
+          if($property->isPublic()) {
+            $name = 'public:'.$name;
+          } else
+          if($property->isPrivate()) {
+            $name = 'private:'.$name;
+            $raw_name = "\0".$class."\0".$raw_name;
+          } else
+          if($property->isProtected()) {
+            $name = 'protected:'.$name;
+            $raw_name = "\0".'*'."\0".$raw_name;
+          }
+          
+          if(!(isset($this->objectFilters[$class])
+               && is_array($this->objectFilters[$class])
+               && in_array($raw_name,$this->objectFilters[$class]))) {
+
+            if(array_key_exists($raw_name,$members)
+               && !$property->isStatic()) {
+              
+              $return[$name] = $this->encodeObject($members[$raw_name], $ObjectDepth + 1, 1);      
+            
+            } else {
+              if(method_exists($property,'setAccessible')) {
+                $property->setAccessible(true);
+                $return[$name] = $this->encodeObject($property->getValue($Object), $ObjectDepth + 1, 1);
+              } else
+              if($property->isPublic()) {
+                $return[$name] = $this->encodeObject($property->getValue($Object), $ObjectDepth + 1, 1);
+              } else {
+                $return[$name] = '** Need PHP 5.3 to get value **';
+              }
+            }
+          } else {
+            $return[$name] = '** Excluded by Filter **';
+          }
+        }
+        
+        // Include all members that are not defined in the class
+        // but exist in the object
+        foreach( $members as $raw_name => $value ) {
+          
+          $name = $raw_name;
+          
+          if ($name{0} == "\0") {
+            $parts = explode("\0", $name);
+            $name = $parts[2];
+          }
+          
+          if(!isset($properties[$name])) {
+            $name = 'undeclared:'.$name;
+              
+            if(!(isset($this->objectFilters[$class])
+                 && is_array($this->objectFilters[$class])
+                 && in_array($raw_name,$this->objectFilters[$class]))) {
+              
+              $return[$name] = $this->encodeObject($value, $ObjectDepth + 1, 1);
+            } else {
+              $return[$name] = '** Excluded by Filter **';
+            }
+          }
+        }
+        
+        array_pop($this->objectStack);
+        
+    } elseif (is_array($Object)) {
+
+        if ($ArrayDepth > $this->options['maxArrayDepth']) {
+          return '** Max Array Depth ('.$this->options['maxArrayDepth'].') **';
+        }
+      
+        foreach ($Object as $key => $val) {
+          
+          // Encoding the $GLOBALS PHP array causes an infinite loop
+          // if the recursion is not reset here as it contains
+          // a reference to itself. This is the only way I have come up
+          // with to stop infinite recursion in this case.
+          if($key=='GLOBALS'
+             && is_array($val)
+             && array_key_exists('GLOBALS',$val)) {
+            $val['GLOBALS'] = '** Recursion (GLOBALS) **';
+          }
+          
+          $return[$key] = $this->encodeObject($val, 1, $ArrayDepth + 1);
+        }
+    } else {
+      if(self::is_utf8($Object)) {
+        return $Object;
+      } else {
+        return utf8_encode($Object);
+      }
+    }
+    return $return;
+  }
+
+  /**
+   * Returns true if $string is valid UTF-8 and false otherwise.
+   *
+   * @param mixed $str String to be tested
+   * @return boolean
+   */
+  protected static function is_utf8($str) {
+    $c=0; $b=0;
+    $bits=0;
+    $len=strlen($str);
+    for($i=0; $i<$len; $i++){
+        $c=ord($str[$i]);
+        if($c > 128){
+            if(($c >= 254)) return false;
+            elseif($c >= 252) $bits=6;
+            elseif($c >= 248) $bits=5;
+            elseif($c >= 240) $bits=4;
+            elseif($c >= 224) $bits=3;
+            elseif($c >= 192) $bits=2;
+            else return false;
+            if(($i+$bits) > $len) return false;
+            while($bits > 1){
+                $i++;
+                $b=ord($str[$i]);
+                if($b < 128 || $b > 191) return false;
+                $bits--;
+            }
+        }
+    }
+    return true;
+  } 
+
+  /**
+   * Converts to and from JSON format.
+   *
+   * JSON (JavaScript Object Notation) is a lightweight data-interchange
+   * format. It is easy for humans to read and write. It is easy for machines
+   * to parse and generate. It is based on a subset of the JavaScript
+   * Programming Language, Standard ECMA-262 3rd Edition - December 1999.
+   * This feature can also be found in  Python. JSON is a text format that is
+   * completely language independent but uses conventions that are familiar
+   * to programmers of the C-family of languages, including C, C++, C#, Java,
+   * JavaScript, Perl, TCL, and many others. These properties make JSON an
+   * ideal data-interchange language.
+   *
+   * This package provides a simple encoder and decoder for JSON notation. It
+   * is intended for use with client-side Javascript applications that make
+   * use of HTTPRequest to perform server communication functions - data can
+   * be encoded into JSON notation for use in a client-side javascript, or
+   * decoded from incoming Javascript requests. JSON format is native to
+   * Javascript, and can be directly eval()'ed with no further parsing
+   * overhead
+   *
+   * All strings should be in ASCII or UTF-8 format!
+   *
+   * LICENSE: Redistribution and use in source and binary forms, with or
+   * without modification, are permitted provided that the following
+   * conditions are met: Redistributions of source code must retain the
+   * above copyright notice, this list of conditions and the following
+   * disclaimer. Redistributions in binary form must reproduce the above
+   * copyright notice, this list of conditions and the following disclaimer
+   * in the documentation and/or other materials provided with the
+   * distribution.
+   *
+   * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
+   * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+   * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
+   * NO EVENT SHALL CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+   * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+   * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+   * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+   * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
+   * TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
+   * USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
+   * DAMAGE.
+   *
+   * @category
+   * @package     Services_JSON
+   * @author      Michal Migurski <mike-json@teczno.com>
+   * @author      Matt Knapp <mdknapp[at]gmail[dot]com>
+   * @author      Brett Stimmerman <brettstimmerman[at]gmail[dot]com>
+   * @author      Christoph Dorn <christoph@christophdorn.com>
+   * @copyright   2005 Michal Migurski
+   * @version     CVS: $Id: JSON.php,v 1.31 2006/06/28 05:54:17 migurski Exp $
+   * @license     http://www.opensource.org/licenses/bsd-license.php
+   * @link        http://pear.php.net/pepr/pepr-proposal-show.php?id=198
+   */
+   
+     
+  /**
+   * Keep a list of objects as we descend into the array so we can detect recursion.
+   */
+  private $json_objectStack = array();
+
+
+ /**
+  * convert a string from one UTF-8 char to one UTF-16 char
+  *
+  * Normally should be handled by mb_convert_encoding, but
+  * provides a slower PHP-only method for installations
+  * that lack the multibye string extension.
+  *
+  * @param    string  $utf8   UTF-8 character
+  * @return   string  UTF-16 character
+  * @access   private
+  */
+  private function json_utf82utf16($utf8)
+  {
+      // oh please oh please oh please oh please oh please
+      if(function_exists('mb_convert_encoding')) {
+          return mb_convert_encoding($utf8, 'UTF-16', 'UTF-8');
+      }
+
+      switch(strlen($utf8)) {
+          case 1:
+              // this case should never be reached, because we are in ASCII range
+              // see: http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
+              return $utf8;
+
+          case 2:
+              // return a UTF-16 character from a 2-byte UTF-8 char
+              // see: http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
+              return chr(0x07 & (ord($utf8{0}) >> 2))
+                   . chr((0xC0 & (ord($utf8{0}) << 6))
+                       | (0x3F & ord($utf8{1})));
+
+          case 3:
+              // return a UTF-16 character from a 3-byte UTF-8 char
+              // see: http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
+              return chr((0xF0 & (ord($utf8{0}) << 4))
+                       | (0x0F & (ord($utf8{1}) >> 2)))
+                   . chr((0xC0 & (ord($utf8{1}) << 6))
+                       | (0x7F & ord($utf8{2})));
+      }
+
+      // ignoring UTF-32 for now, sorry
+      return '';
+  }
+
+ /**
+  * encodes an arbitrary variable into JSON format
+  *
+  * @param    mixed   $var    any number, boolean, string, array, or object to be encoded.
+  *                           see argument 1 to Services_JSON() above for array-parsing behavior.
+  *                           if var is a strng, note that encode() always expects it
+  *                           to be in ASCII or UTF-8 format!
+  *
+  * @return   mixed   JSON string representation of input var or an error if a problem occurs
+  * @access   public
+  */
+  private function json_encode($var)
+  {
+    
+    if(is_object($var)) {
+      if(in_array($var,$this->json_objectStack)) {
+        return '"** Recursion **"';
+      }
+    }
+          
+      switch (gettype($var)) {
+          case 'boolean':
+              return $var ? 'true' : 'false';
+
+          case 'NULL':
+              return 'null';
+
+          case 'integer':
+              return (int) $var;
+
+          case 'double':
+          case 'float':
+              return (float) $var;
+
+          case 'string':
+              // STRINGS ARE EXPECTED TO BE IN ASCII OR UTF-8 FORMAT
+              $ascii = '';
+              $strlen_var = strlen($var);
+
+             /*
+              * Iterate over every character in the string,
+              * escaping with a slash or encoding to UTF-8 where necessary
+              */
+              for ($c = 0; $c < $strlen_var; ++$c) {
+
+                  $ord_var_c = ord($var{$c});
+
+                  switch (true) {
+                      case $ord_var_c == 0x08:
+                          $ascii .= '\b';
+                          break;
+                      case $ord_var_c == 0x09:
+                          $ascii .= '\t';
+                          break;
+                      case $ord_var_c == 0x0A:
+                          $ascii .= '\n';
+                          break;
+                      case $ord_var_c == 0x0C:
+                          $ascii .= '\f';
+                          break;
+                      case $ord_var_c == 0x0D:
+                          $ascii .= '\r';
+                          break;
+
+                      case $ord_var_c == 0x22:
+                      case $ord_var_c == 0x2F:
+                      case $ord_var_c == 0x5C:
+                          // double quote, slash, slosh
+                          $ascii .= '\\'.$var{$c};
+                          break;
+
+                      case (($ord_var_c >= 0x20) && ($ord_var_c <= 0x7F)):
+                          // characters U-00000000 - U-0000007F (same as ASCII)
+                          $ascii .= $var{$c};
+                          break;
+
+                      case (($ord_var_c & 0xE0) == 0xC0):
+                          // characters U-00000080 - U-000007FF, mask 110XXXXX
+                          // see http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
+                          $char = pack('C*', $ord_var_c, ord($var{$c + 1}));
+                          $c += 1;
+                          $utf16 = $this->json_utf82utf16($char);
+                          $ascii .= sprintf('\u%04s', bin2hex($utf16));
+                          break;
+
+                      case (($ord_var_c & 0xF0) == 0xE0):
+                          // characters U-00000800 - U-0000FFFF, mask 1110XXXX
+                          // see http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
+                          $char = pack('C*', $ord_var_c,
+                                       ord($var{$c + 1}),
+                                       ord($var{$c + 2}));
+                          $c += 2;
+                          $utf16 = $this->json_utf82utf16($char);
+                          $ascii .= sprintf('\u%04s', bin2hex($utf16));
+                          break;
+
+                      case (($ord_var_c & 0xF8) == 0xF0):
+                          // characters U-00010000 - U-001FFFFF, mask 11110XXX
+                          // see http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
+                          $char = pack('C*', $ord_var_c,
+                                       ord($var{$c + 1}),
+                                       ord($var{$c + 2}),
+                                       ord($var{$c + 3}));
+                          $c += 3;
+                          $utf16 = $this->json_utf82utf16($char);
+                          $ascii .= sprintf('\u%04s', bin2hex($utf16));
+                          break;
+
+                      case (($ord_var_c & 0xFC) == 0xF8):
+                          // characters U-00200000 - U-03FFFFFF, mask 111110XX
+                          // see http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
+                          $char = pack('C*', $ord_var_c,
+                                       ord($var{$c + 1}),
+                                       ord($var{$c + 2}),
+                                       ord($var{$c + 3}),
+                                       ord($var{$c + 4}));
+                          $c += 4;
+                          $utf16 = $this->json_utf82utf16($char);
+                          $ascii .= sprintf('\u%04s', bin2hex($utf16));
+                          break;
+
+                      case (($ord_var_c & 0xFE) == 0xFC):
+                          // characters U-04000000 - U-7FFFFFFF, mask 1111110X
+                          // see http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
+                          $char = pack('C*', $ord_var_c,
+                                       ord($var{$c + 1}),
+                                       ord($var{$c + 2}),
+                                       ord($var{$c + 3}),
+                                       ord($var{$c + 4}),
+                                       ord($var{$c + 5}));
+                          $c += 5;
+                          $utf16 = $this->json_utf82utf16($char);
+                          $ascii .= sprintf('\u%04s', bin2hex($utf16));
+                          break;
+                  }
+              }
+
+              return '"'.$ascii.'"';
+
+          case 'array':
+             /*
+              * As per JSON spec if any array key is not an integer
+              * we must treat the the whole array as an object. We
+              * also try to catch a sparsely populated associative
+              * array with numeric keys here because some JS engines
+              * will create an array with empty indexes up to
+              * max_index which can cause memory issues and because
+              * the keys, which may be relevant, will be remapped
+              * otherwise.
+              *
+              * As per the ECMA and JSON specification an object may
+              * have any string as a property. Unfortunately due to
+              * a hole in the ECMA specification if the key is a
+              * ECMA reserved word or starts with a digit the
+              * parameter is only accessible using ECMAScript's
+              * bracket notation.
+              */
+
+              // treat as a JSON object
+              if (is_array($var) && count($var) && (array_keys($var) !== range(0, sizeof($var) - 1))) {
+                  
+                  $this->json_objectStack[] = $var;
+
+                  $properties = array_map(array($this, 'json_name_value'),
+                                          array_keys($var),
+                                          array_values($var));
+
+                  array_pop($this->json_objectStack);
+
+                  foreach($properties as $property) {
+                      if($property instanceof Exception) {
+                          return $property;
+                      }
+                  }
+
+                  return '{' . join(',', $properties) . '}';
+              }
+
+              $this->json_objectStack[] = $var;
+
+              // treat it like a regular array
+              $elements = array_map(array($this, 'json_encode'), $var);
+
+              array_pop($this->json_objectStack);
+
+              foreach($elements as $element) {
+                  if($element instanceof Exception) {
+                      return $element;
+                  }
+              }
+
+              return '[' . join(',', $elements) . ']';
+
+          case 'object':
+              $vars = self::encodeObject($var);
+
+              $this->json_objectStack[] = $var;
+
+              $properties = array_map(array($this, 'json_name_value'),
+                                      array_keys($vars),
+                                      array_values($vars));
+
+              array_pop($this->json_objectStack);
+              
+              foreach($properties as $property) {
+                  if($property instanceof Exception) {
+                      return $property;
+                  }
+              }
+                     
+              return '{' . join(',', $properties) . '}';
+
+          default:
+              return null;
+      }
+  }
+
+ /**
+  * array-walking function for use in generating JSON-formatted name-value pairs
+  *
+  * @param    string  $name   name of key to use
+  * @param    mixed   $value  reference to an array element to be encoded
+  *
+  * @return   string  JSON-formatted name-value pair, like '"name":value'
+  * @access   private
+  */
+  private function json_name_value($name, $value)
+  {
+      // Encoding the $GLOBALS PHP array causes an infinite loop
+      // if the recursion is not reset here as it contains
+      // a reference to itself. This is the only way I have come up
+      // with to stop infinite recursion in this case.
+      if($name=='GLOBALS'
+         && is_array($value)
+         && array_key_exists('GLOBALS',$value)) {
+        $value['GLOBALS'] = '** Recursion **';
+      }
+    
+      $encoded_value = $this->json_encode($value);
+
+      if($encoded_value instanceof Exception) {
+          return $encoded_value;
+      }
+
+      return $this->json_encode(strval($name)) . ':' . $encoded_value;
+  }
+}
Index: moodle/lib/minify/lib/HTTP/ConditionalGet.php
--- moodle/lib/minify/lib/HTTP/ConditionalGet.php No Base Revision
+++ moodle/lib/minify/lib/HTTP/ConditionalGet.php Locally New
@@ -0,0 +1,348 @@
+<?php
+/**
+ * Class HTTP_ConditionalGet  
+ * @package Minify
+ * @subpackage HTTP
+ */
+
+/**
+ * Implement conditional GET via a timestamp or hash of content
+ *
+ * E.g. Content from DB with update time:
+ * <code>
+ * list($updateTime, $content) = getDbUpdateAndContent();
+ * $cg = new HTTP_ConditionalGet(array(
+ *     'lastModifiedTime' => $updateTime
+ *     ,'isPublic' => true
+ * ));
+ * $cg->sendHeaders();
+ * if ($cg->cacheIsValid) {
+ *     exit();
+ * }
+ * echo $content;
+ * </code>
+ * 
+ * E.g. Shortcut for the above
+ * <code>
+ * HTTP_ConditionalGet::check($updateTime, true); // exits if client has cache
+ * echo $content;
+ * </code>
+ *
+ * E.g. Content from DB with no update time:
+ * <code>
+ * $content = getContentFromDB();
+ * $cg = new HTTP_ConditionalGet(array(
+ *     'contentHash' => md5($content)
+ * ));
+ * $cg->sendHeaders();
+ * if ($cg->cacheIsValid) {
+ *     exit();
+ * }
+ * echo $content;
+ * </code>
+ * 
+ * E.g. Static content with some static includes:
+ * <code>
+ * // before content
+ * $cg = new HTTP_ConditionalGet(array(
+ *     'lastUpdateTime' => max(
+ *         filemtime(__FILE__)
+ *         ,filemtime('/path/to/header.inc')
+ *         ,filemtime('/path/to/footer.inc')
+ *     )
+ * ));
+ * $cg->sendHeaders();
+ * if ($cg->cacheIsValid) {
+ *     exit();
+ * }
+ * </code>
+ * @package Minify
+ * @subpackage HTTP
+ * @author Stephen Clay <steve@mrclay.org>
+ */
+class HTTP_ConditionalGet {
+
+    /**
+     * Does the client have a valid copy of the requested resource?
+     * 
+     * You'll want to check this after instantiating the object. If true, do
+     * not send content, just call sendHeaders() if you haven't already.
+     *
+     * @var bool
+     */
+    public $cacheIsValid = null;
+
+    /**
+     * @param array $spec options
+     * 
+     * 'isPublic': (bool) if true, the Cache-Control header will contain 
+     * "public", allowing proxies to cache the content. Otherwise "private" will 
+     * be sent, allowing only browser caching. (default false)
+     * 
+     * 'lastModifiedTime': (int) if given, both ETag AND Last-Modified headers
+     * will be sent with content. This is recommended.
+     *
+     * 'encoding': (string) if set, the header "Vary: Accept-Encoding" will
+     * always be sent and a truncated version of the encoding will be appended
+     * to the ETag. E.g. "pub123456;gz". This will also trigger a more lenient 
+     * checking of the client's If-None-Match header, as the encoding portion of
+     * the ETag will be stripped before comparison.
+     * 
+     * 'contentHash': (string) if given, only the ETag header can be sent with
+     * content (only HTTP1.1 clients can conditionally GET). The given string 
+     * should be short with no quote characters and always change when the 
+     * resource changes (recommend md5()). This is not needed/used if 
+     * lastModifiedTime is given.
+     * 
+     * 'eTag': (string) if given, this will be used as the ETag header rather
+     * than values based on lastModifiedTime or contentHash. Also the encoding
+     * string will not be appended to the given value as described above.
+     * 
+     * 'invalidate': (bool) if true, the client cache will be considered invalid
+     * without testing. Effectively this disables conditional GET. 
+     * (default false)
+     * 
+     * 'maxAge': (int) if given, this will set the Cache-Control max-age in 
+     * seconds, and also set the Expires header to the equivalent GMT date. 
+     * After the max-age period has passed, the browser will again send a 
+     * conditional GET to revalidate its cache.
+     * 
+     * @return null
+     */
+    public function __construct($spec)
+    {
+        $scope = (isset($spec['isPublic']) && $spec['isPublic'])
+            ? 'public'
+            : 'private';
+        $maxAge = 0;
+        // backwards compatibility (can be removed later)
+        if (isset($spec['setExpires']) 
+            && is_numeric($spec['setExpires'])
+            && ! isset($spec['maxAge'])) {
+            $spec['maxAge'] = $spec['setExpires'] - $_SERVER['REQUEST_TIME'];
+        }
+        if (isset($spec['maxAge'])) {
+            $maxAge = $spec['maxAge'];
+            $this->_headers['Expires'] = self::gmtDate(
+                $_SERVER['REQUEST_TIME'] + $spec['maxAge'] 
+            );
+        }
+        $etagAppend = '';
+        if (isset($spec['encoding'])) {
+            $this->_stripEtag = true;
+            $this->_headers['Vary'] = 'Accept-Encoding';
+            if ('' !== $spec['encoding']) {
+                if (0 === strpos($spec['encoding'], 'x-')) {
+                    $spec['encoding'] = substr($spec['encoding'], 2);
+                }
+                $etagAppend = ';' . substr($spec['encoding'], 0, 2);
+            }
+        }
+        if (isset($spec['lastModifiedTime'])) {
+            $this->_setLastModified($spec['lastModifiedTime']);
+            if (isset($spec['eTag'])) { // Use it
+                $this->_setEtag($spec['eTag'], $scope);
+            } else { // base both headers on time
+                $this->_setEtag($spec['lastModifiedTime'] . $etagAppend, $scope);
+            }
+        } elseif (isset($spec['eTag'])) { // Use it
+            $this->_setEtag($spec['eTag'], $scope);
+        } elseif (isset($spec['contentHash'])) { // Use the hash as the ETag
+            $this->_setEtag($spec['contentHash'] . $etagAppend, $scope);
+        }
+        $this->_headers['Cache-Control'] = "max-age={$maxAge}, {$scope}";
+        // invalidate cache if disabled, otherwise check
+        $this->cacheIsValid = (isset($spec['invalidate']) && $spec['invalidate'])
+            ? false
+            : $this->_isCacheValid();
+    }
+    
+    /**
+     * Get array of output headers to be sent
+     * 
+     * In the case of 304 responses, this array will only contain the response
+     * code header: array('_responseCode' => 'HTTP/1.0 304 Not Modified')
+     * 
+     * Otherwise something like: 
+     * <code>
+     * array(
+     *     'Cache-Control' => 'max-age=0, public'
+     *     ,'ETag' => '"foobar"'
+     * )
+     * </code>
+     *
+     * @return array 
+     */
+    public function getHeaders()
+    {
+        return $this->_headers;
+    }
+
+    /**
+     * Set the Content-Length header in bytes
+     * 
+     * With most PHP configs, as long as you don't flush() output, this method
+     * is not needed and PHP will buffer all output and set Content-Length for 
+     * you. Otherwise you'll want to call this to let the client know up front.
+     * 
+     * @param int $bytes
+     * 
+     * @return int copy of input $bytes
+     */
+    public function setContentLength($bytes)
+    {
+        return $this->_headers['Content-Length'] = $bytes;
+    }
+
+    /**
+     * Send headers
+     * 
+     * @see getHeaders()
+     * 
+     * Note this doesn't "clear" the headers. Calling sendHeaders() will
+     * call header() again (but probably have not effect) and getHeaders() will
+     * still return the headers.
+     *
+     * @return null
+     */
+    public function sendHeaders()
+    {
+        $headers = $this->_headers;
+        if (array_key_exists('_responseCode', $headers)) {
+            header($headers['_responseCode']);
+            unset($headers['_responseCode']);
+        }
+        foreach ($headers as $name => $val) {
+            header($name . ': ' . $val);
+        }
+    }
+    
+    /**
+     * Exit if the client's cache is valid for this resource
+     *
+     * This is a convenience method for common use of the class
+     *
+     * @param int $lastModifiedTime if given, both ETag AND Last-Modified headers
+     * will be sent with content. This is recommended.
+     *
+     * @param bool $isPublic (default false) if true, the Cache-Control header 
+     * will contain "public", allowing proxies to cache the content. Otherwise 
+     * "private" will be sent, allowing only browser caching.
+     *
+     * @param array $options (default empty) additional options for constructor
+     *
+     * @return null     
+     */
+    public static function check($lastModifiedTime = null, $isPublic = false, $options = array())
+    {
+        if (null !== $lastModifiedTime) {
+            $options['lastModifiedTime'] = (int)$lastModifiedTime;
+        }
+        $options['isPublic'] = (bool)$isPublic;
+        $cg = new HTTP_ConditionalGet($options);
+        $cg->sendHeaders();
+        if ($cg->cacheIsValid) {
+            exit();
+        }
+    }
+    
+    
+    /**
+     * Get a GMT formatted date for use in HTTP headers
+     * 
+     * <code>
+     * header('Expires: ' . HTTP_ConditionalGet::gmtdate($time));
+     * </code>  
+     *
+     * @param int $time unix timestamp
+     * 
+     * @return string
+     */
+    public static function gmtDate($time)
+    {
+        return gmdate('D, d M Y H:i:s \G\M\T', $time);
+    }
+    
+    protected $_headers = array();
+    protected $_lmTime = null;
+    protected $_etag = null;
+    protected $_stripEtag = false;
+    
+    protected function _setEtag($hash, $scope)
+    {
+        $this->_etag = '"' . substr($scope, 0, 3) . $hash . '"';
+        $this->_headers['ETag'] = $this->_etag;
+    }
+
+    protected function _setLastModified($time)
+    {
+        $this->_lmTime = (int)$time;
+        $this->_headers['Last-Modified'] = self::gmtDate($time);
+    }
+
+    /**
+     * Determine validity of client cache and queue 304 header if valid
+     */
+    protected function _isCacheValid()
+    {
+        if (null === $this->_etag) {
+            // lmTime is copied to ETag, so this condition implies that the
+            // server sent neither ETag nor Last-Modified, so the client can't 
+            // possibly has a valid cache.
+            return false;
+        }
+        $isValid = ($this->resourceMatchedEtag() || $this->resourceNotModified());
+        if ($isValid) {
+            $this->_headers['_responseCode'] = 'HTTP/1.0 304 Not Modified';
+        }
+        return $isValid;
+    }
+
+    protected function resourceMatchedEtag()
+    {
+        if (!isset($_SERVER['HTTP_IF_NONE_MATCH'])) {
+            return false;
+        }
+        $clientEtagList = get_magic_quotes_gpc()
+            ? stripslashes($_SERVER['HTTP_IF_NONE_MATCH'])
+            : $_SERVER['HTTP_IF_NONE_MATCH'];
+        $clientEtags = explode(',', $clientEtagList);
+        
+        $compareTo = $this->normalizeEtag($this->_etag);
+        foreach ($clientEtags as $clientEtag) {
+            if ($this->normalizeEtag($clientEtag) === $compareTo) {
+                // respond with the client's matched ETag, even if it's not what
+                // we would've sent by default
+                $this->_headers['ETag'] = trim($clientEtag);
+                return true;
+            }
+        }
+        return false;
+    }
+    
+    protected function normalizeEtag($etag) {
+        $etag = trim($etag);
+        return $this->_stripEtag
+            ? preg_replace('/;\\w\\w"$/', '"', $etag)
+            : $etag;
+    }
+
+    protected function resourceNotModified()
+    {
+        if (!isset($_SERVER['HTTP_IF_MODIFIED_SINCE'])) {
+            return false;
+        }
+        $ifModifiedSince = $_SERVER['HTTP_IF_MODIFIED_SINCE'];
+        if (false !== ($semicolon = strrpos($ifModifiedSince, ';'))) {
+            // IE has tacked on extra data to this header, strip it
+            $ifModifiedSince = substr($ifModifiedSince, 0, $semicolon);
+        }
+        if ($ifModifiedSince == self::gmtDate($this->_lmTime)) {
+            // Apache 2.2's behavior. If there was no ETag match, send the 
+            // non-encoded version of the ETag value.
+            $this->_headers['ETag'] = $this->normalizeEtag($this->_etag);
+            return true;
+        }
+        return false;
+    }
+}
Index: moodle/lib/minify/lib/HTTP/Encoder.php
--- moodle/lib/minify/lib/HTTP/Encoder.php No Base Revision
+++ moodle/lib/minify/lib/HTTP/Encoder.php Locally New
@@ -0,0 +1,326 @@
+<?php
+/**
+ * Class HTTP_Encoder  
+ * @package Minify
+ * @subpackage HTTP
+ */
+ 
+/**
+ * Encode and send gzipped/deflated content
+ *
+ * The "Vary: Accept-Encoding" header is sent. If the client allows encoding, 
+ * Content-Encoding and Content-Length are added.
+ *
+ * <code>
+ * // Send a CSS file, compressed if possible
+ * $he = new HTTP_Encoder(array(
+ *     'content' => file_get_contents($cssFile)
+ *     ,'type' => 'text/css'
+ * ));
+ * $he->encode();
+ * $he->sendAll();
+ * </code>
+ *
+ * <code>
+ * // Shortcut to encoding output
+ * header('Content-Type: text/css'); // needed if not HTML
+ * HTTP_Encoder::output($css);
+ * </code>
+ * 
+ * <code>
+ * // Just sniff for the accepted encoding
+ * $encoding = HTTP_Encoder::getAcceptedEncoding();
+ * </code>
+ *
+ * For more control over headers, use getHeaders() and getData() and send your
+ * own output.
+ * 
+ * Note: If you don't need header mgmt, use PHP's native gzencode, gzdeflate, 
+ * and gzcompress functions for gzip, deflate, and compress-encoding
+ * respectively.
+ * 
+ * @package Minify
+ * @subpackage HTTP
+ * @author Stephen Clay <steve@mrclay.org>
+ */
+class HTTP_Encoder {
+
+    /**
+     * Should the encoder allow HTTP encoding to IE6? 
+     * 
+     * If you have many IE6 users and the bandwidth savings is worth troubling 
+     * some of them, set this to true.
+     * 
+     * By default, encoding is only offered to IE7+. When this is true,
+     * getAcceptedEncoding() will return an encoding for IE6 if its user agent
+     * string contains "SV1". This has been documented in many places as "safe",
+     * but there seem to be remaining, intermittent encoding bugs in patched 
+     * IE6 on the wild web.
+     * 
+     * @var bool
+     */
+    public static $encodeToIe6 = false;
+    
+    
+    /**
+     * Default compression level for zlib operations
+     * 
+     * This level is used if encode() is not given a $compressionLevel
+     * 
+     * @var int
+     */
+    public static $compressionLevel = 6;
+    
+
+    /**
+     * Get an HTTP Encoder object
+     * 
+     * @param array $spec options
+     * 
+     * 'content': (string required) content to be encoded
+     * 
+     * 'type': (string) if set, the Content-Type header will have this value.
+     * 
+     * 'method: (string) only set this if you are forcing a particular encoding
+     * method. If not set, the best method will be chosen by getAcceptedEncoding()
+     * The available methods are 'gzip', 'deflate', 'compress', and '' (no
+     * encoding)
+     * 
+     * @return null
+     */
+    public function __construct($spec) 
+    {
+        $this->_content = $spec['content'];
+        $this->_headers['Content-Length'] = (string)strlen($this->_content);
+        if (isset($spec['type'])) {
+            $this->_headers['Content-Type'] = $spec['type'];
+        }
+        if (isset($spec['method'])
+            && in_array($spec['method'], array('gzip', 'deflate', 'compress', '')))
+        {
+            $this->_encodeMethod = array($spec['method'], $spec['method']);
+        } else {
+            $this->_encodeMethod = self::getAcceptedEncoding();
+        }
+    }
+
+    /**
+     * Get content in current form
+     * 
+     * Call after encode() for encoded content.
+     * 
+     * return string
+     */
+    public function getContent() 
+    {
+        return $this->_content;
+    }
+    
+    /**
+     * Get array of output headers to be sent
+     * 
+     * E.g.
+     * <code>
+     * array(
+     *     'Content-Length' => '615'
+     *     ,'Content-Encoding' => 'x-gzip'
+     *     ,'Vary' => 'Accept-Encoding'
+     * )
+     * </code>
+     *
+     * @return array 
+     */
+    public function getHeaders()
+    {
+        return $this->_headers;
+    }
+
+    /**
+     * Send output headers
+     * 
+     * You must call this before headers are sent and it probably cannot be
+     * used in conjunction with zlib output buffering / mod_gzip. Errors are
+     * not handled purposefully.
+     * 
+     * @see getHeaders()
+     * 
+     * @return null
+     */
+    public function sendHeaders()
+    {
+        foreach ($this->_headers as $name => $val) {
+            header($name . ': ' . $val);
+        }
+    }
+    
+    /**
+     * Send output headers and content
+     * 
+     * A shortcut for sendHeaders() and echo getContent()
+     *
+     * You must call this before headers are sent and it probably cannot be
+     * used in conjunction with zlib output buffering / mod_gzip. Errors are
+     * not handled purposefully.
+     * 
+     * @return null
+     */
+    public function sendAll()
+    {
+        $this->sendHeaders();
+        echo $this->_content;
+    }
+
+    /**
+     * Determine the client's best encoding method from the HTTP Accept-Encoding 
+     * header.
+     * 
+     * If no Accept-Encoding header is set, or the browser is IE before v6 SP2,
+     * this will return ('', ''), the "identity" encoding.
+     * 
+     * A syntax-aware scan is done of the Accept-Encoding, so the method must
+     * be non 0. The methods are favored in order of gzip, deflate, then 
+     * compress. Deflate is always smallest and generally faster, but is 
+     * rarely sent by servers, so client support could be buggier.
+     * 
+     * @param bool $allowCompress allow the older compress encoding
+     * 
+     * @param bool $allowDeflate allow the more recent deflate encoding
+     * 
+     * @return array two values, 1st is the actual encoding method, 2nd is the
+     * alias of that method to use in the Content-Encoding header (some browsers
+     * call gzip "x-gzip" etc.)
+     */
+    public static function getAcceptedEncoding($allowCompress = true, $allowDeflate = true)
+    {
+        // @link http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html
+        
+        if (! isset($_SERVER['HTTP_ACCEPT_ENCODING'])
+            || self::_isBuggyIe())
+        {
+            return array('', '');
+        }
+        $ae = $_SERVER['HTTP_ACCEPT_ENCODING'];
+        // gzip checks (quick)
+        if (0 === strpos($ae, 'gzip,')             // most browsers
+            || 0 === strpos($ae, 'deflate, gzip,') // opera
+        ) {
+            return array('gzip', 'gzip');
+        }
+        // gzip checks (slow)
+        if (preg_match(
+                '@(?:^|,)\\s*((?:x-)?gzip)\\s*(?:$|,|;\\s*q=(?:0\\.|1))@'
+                ,$ae
+                ,$m)) {
+            return array('gzip', $m[1]);
+        }
+        if ($allowDeflate) {
+            // deflate checks    
+            $aeRev = strrev($ae);
+            if (0 === strpos($aeRev, 'etalfed ,') // ie, webkit
+                || 0 === strpos($aeRev, 'etalfed,') // gecko
+                || 0 === strpos($ae, 'deflate,') // opera
+                // slow parsing
+                || preg_match(
+                    '@(?:^|,)\\s*deflate\\s*(?:$|,|;\\s*q=(?:0\\.|1))@', $ae)) {
+                return array('deflate', 'deflate');
+            }
+        }
+        if ($allowCompress && preg_match(
+                '@(?:^|,)\\s*((?:x-)?compress)\\s*(?:$|,|;\\s*q=(?:0\\.|1))@'
+                ,$ae
+                ,$m)) {
+            return array('compress', $m[1]);
+        }
+        return array('', '');
+    }
+
+    /**
+     * Encode (compress) the content
+     * 
+     * If the encode method is '' (none) or compression level is 0, or the 'zlib'
+     * extension isn't loaded, we return false.
+     * 
+     * Then the appropriate gz_* function is called to compress the content. If
+     * this fails, false is returned.
+     * 
+     * The header "Vary: Accept-Encoding" is added. If encoding is successful, 
+     * the Content-Length header is updated, and Content-Encoding is also added.
+     * 
+     * @param int $compressionLevel given to zlib functions. If not given, the
+     * class default will be used.
+     * 
+     * @return bool success true if the content was actually compressed
+     */
+    public function encode($compressionLevel = null)
+    {
+        $this->_headers['Vary'] = 'Accept-Encoding';
+        if (null === $compressionLevel) {
+            $compressionLevel = self::$compressionLevel;
+        }
+        if ('' === $this->_encodeMethod[0]
+            || ($compressionLevel == 0)
+            || !extension_loaded('zlib'))
+        {
+            return false;
+        }
+        if ($this->_encodeMethod[0] === 'deflate') {
+            $encoded = gzdeflate($this->_content, $compressionLevel);
+        } elseif ($this->_encodeMethod[0] === 'gzip') {
+            $encoded = gzencode($this->_content, $compressionLevel);
+        } else {
+            $encoded = gzcompress($this->_content, $compressionLevel);
+        }
+        if (false === $encoded) {
+            return false;
+        }
+        $this->_headers['Content-Length'] = strlen($encoded);
+        $this->_headers['Content-Encoding'] = $this->_encodeMethod[1];
+        $this->_content = $encoded;
+        return true;
+    }
+    
+    /**
+     * Encode and send appropriate headers and content
+     *
+     * This is a convenience method for common use of the class
+     * 
+     * @param string $content
+     * 
+     * @param int $compressionLevel given to zlib functions. If not given, the
+     * class default will be used.
+     * 
+     * @return bool success true if the content was actually compressed
+     */
+    public static function output($content, $compressionLevel = null)
+    {
+        if (null === $compressionLevel) {
+            $compressionLevel = self::$compressionLevel;
+        }
+        $he = new HTTP_Encoder(array('content' => $content));
+        $ret = $he->encode($compressionLevel);
+        $he->sendAll();
+        return $ret;
+    }
+    
+    protected $_content = '';
+    protected $_headers = array();
+    protected $_encodeMethod = array('', '');
+
+    /**
+     * Is the browser an IE version earlier than 6 SP2?  
+     */
+    protected static function _isBuggyIe()
+    {
+        $ua = $_SERVER['HTTP_USER_AGENT'];
+        // quick escape for non-IEs
+        if (0 !== strpos($ua, 'Mozilla/4.0 (compatible; MSIE ')
+            || false !== strpos($ua, 'Opera')) {
+            return false;
+        }
+        // no regex = faaast
+        $version = (float)substr($ua, 30); 
+        return self::$encodeToIe6
+            ? ($version < 6 || ($version == 6 && false === strpos($ua, 'SV1')))
+            : ($version < 7);
+    }
+}
Index: moodle/lib/minify/lib/JSMin.php
--- moodle/lib/minify/lib/JSMin.php No Base Revision
+++ moodle/lib/minify/lib/JSMin.php Locally New
@@ -0,0 +1,314 @@
+<?php
+/**
+ * jsmin.php - PHP implementation of Douglas Crockford's JSMin.
+ *
+ * This is a direct port of jsmin.c to PHP with a few PHP performance tweaks and
+ * modifications to preserve some comments (see below). Also, rather than using
+ * stdin/stdout, JSMin::minify() accepts a string as input and returns another
+ * string as output.
+ * 
+ * Comments containing IE conditional compilation are preserved, as are multi-line
+ * comments that begin with "/*!" (for documentation purposes). In the latter case
+ * newlines are inserted around the comment to enhance readability.
+ *
+ * PHP 5 or higher is required.
+ *
+ * Permission is hereby granted to use this version of the library under the
+ * same terms as jsmin.c, which has the following license:
+ *
+ * --
+ * Copyright (c) 2002 Douglas Crockford  (www.crockford.com)
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy of
+ * this software and associated documentation files (the "Software"), to deal in
+ * the Software without restriction, including without limitation the rights to
+ * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
+ * of the Software, and to permit persons to whom the Software is furnished to do
+ * so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * The Software shall be used for Good, not Evil.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ * --
+ *
+ * @package JSMin
+ * @author Ryan Grove <ryan@wonko.com> (PHP port)
+ * @author Steve Clay <steve@mrclay.org> (modifications + cleanup)
+ * @author Andrea Giammarchi <http://www.3site.eu> (spaceBeforeRegExp)
+ * @copyright 2002 Douglas Crockford <douglas@crockford.com> (jsmin.c)
+ * @copyright 2008 Ryan Grove <ryan@wonko.com> (PHP port)
+ * @license http://opensource.org/licenses/mit-license.php MIT License
+ * @link http://code.google.com/p/jsmin-php/
+ */
+
+class JSMin {
+    const ORD_LF            = 10;
+    const ORD_SPACE         = 32;
+    const ACTION_KEEP_A     = 1;
+    const ACTION_DELETE_A   = 2;
+    const ACTION_DELETE_A_B = 3;
+    
+    protected $a           = "\n";
+    protected $b           = '';
+    protected $input       = '';
+    protected $inputIndex  = 0;
+    protected $inputLength = 0;
+    protected $lookAhead   = null;
+    protected $output      = '';
+    
+    /**
+     * Minify Javascript
+     *
+     * @param string $js Javascript to be minified
+     * @return string
+     */
+    public static function minify($js)
+    {
+        $jsmin = new JSMin($js);
+        return $jsmin->min();
+    }
+    
+    /**
+     * Setup process
+     */
+    public function __construct($input)
+    {
+        $this->input       = str_replace("\r\n", "\n", $input);
+        $this->inputLength = strlen($this->input);
+    }
+    
+    /**
+     * Perform minification, return result
+     */
+    public function min()
+    {
+        if ($this->output !== '') { // min already run
+            return $this->output;
+        }
+        $this->action(self::ACTION_DELETE_A_B);
+        
+        while ($this->a !== null) {
+            // determine next command
+            $command = self::ACTION_KEEP_A; // default
+            if ($this->a === ' ') {
+                if (! $this->isAlphaNum($this->b)) {
+                    $command = self::ACTION_DELETE_A;
+                }
+            } elseif ($this->a === "\n") {
+                if ($this->b === ' ') {
+                    $command = self::ACTION_DELETE_A_B;
+                } elseif (false === strpos('{[(+-', $this->b) 
+                          && ! $this->isAlphaNum($this->b)) {
+                    $command = self::ACTION_DELETE_A;
+                }
+            } elseif (! $this->isAlphaNum($this->a)) {
+                if ($this->b === ' '
+                    || ($this->b === "\n" 
+                        && (false === strpos('}])+-"\'', $this->a)))) {
+                    $command = self::ACTION_DELETE_A_B;
+                }
+            }
+            $this->action($command);
+        }
+        $this->output = trim($this->output);
+        return $this->output;
+    }
+    
+    /**
+     * ACTION_KEEP_A = Output A. Copy B to A. Get the next B.
+     * ACTION_DELETE_A = Copy B to A. Get the next B.
+     * ACTION_DELETE_A_B = Get the next B.
+     */
+    protected function action($command)
+    {
+        switch ($command) {
+            case self::ACTION_KEEP_A:
+                $this->output .= $this->a;
+                // fallthrough
+            case self::ACTION_DELETE_A:
+                $this->a = $this->b;
+                if ($this->a === "'" || $this->a === '"') { // string literal
+                    $str = $this->a; // in case needed for exception
+                    while (true) {
+                        $this->output .= $this->a;
+                        $this->a       = $this->get();
+                        if ($this->a === $this->b) { // end quote
+                            break;
+                        }
+                        if (ord($this->a) <= self::ORD_LF) {
+                            throw new JSMin_UnterminatedStringException(
+                                'Unterminated String: ' . var_export($str, true));
+                        }
+                        $str .= $this->a;
+                        if ($this->a === '\\') {
+                            $this->output .= $this->a;
+                            $this->a       = $this->get();
+                            $str .= $this->a;
+                        }
+                    }
+                }
+                // fallthrough
+            case self::ACTION_DELETE_A_B:
+                $this->b = $this->next();
+                if ($this->b === '/' && $this->isRegexpLiteral()) { // RegExp literal
+                    $this->output .= $this->a . $this->b;
+                    $pattern = '/'; // in case needed for exception
+                    while (true) {
+                        $this->a = $this->get();
+                        $pattern .= $this->a;
+                        if ($this->a === '/') { // end pattern
+                            break; // while (true)
+                        } elseif ($this->a === '\\') {
+                            $this->output .= $this->a;
+                            $this->a       = $this->get();
+                            $pattern      .= $this->a;
+                        } elseif (ord($this->a) <= self::ORD_LF) {
+                            throw new JSMin_UnterminatedRegExpException(
+                                'Unterminated RegExp: '. var_export($pattern, true));
+                        }
+                        $this->output .= $this->a;
+                    }
+                    $this->b = $this->next();
+                }
+            // end case ACTION_DELETE_A_B
+        }
+    }
+    
+    protected function isRegexpLiteral()
+    {
+        if (false !== strpos("\n{;(,=:[!&|?", $this->a)) { // we aren't dividing
+            return true;
+        }
+        if (' ' === $this->a) {
+            $length = strlen($this->output);
+            if ($length < 2) { // weird edge case
+                return true;
+            }
+            // you can't divide a keyword
+            if (preg_match('/(?:case|else|in|return|typeof)$/', $this->output, $m)) {
+                if ($this->output === $m[0]) { // odd but could happen
+                    return true;
+                }
+                // make sure it's a keyword, not end of an identifier
+                $charBeforeKeyword = substr($this->output, $length - strlen($m[0]) - 1, 1);
+                if (! $this->isAlphaNum($charBeforeKeyword)) {
+                    return true;
+                }
+            }
+        }
+        return false;
+    }
+    
+    /**
+     * Get next char. Convert ctrl char to space.
+     */
+    protected function get()
+    {
+        $c = $this->lookAhead;
+        $this->lookAhead = null;
+        if ($c === null) {
+            if ($this->inputIndex < $this->inputLength) {
+                $c = $this->input[$this->inputIndex];
+                $this->inputIndex += 1;
+            } else {
+                return null;
+            }
+        }
+        if ($c === "\r" || $c === "\n") {
+            return "\n";
+        }
+        if (ord($c) < self::ORD_SPACE) { // control char
+            return ' ';
+        }
+        return $c;
+    }
+    
+    /**
+     * Get next char. If is ctrl character, translate to a space or newline.
+     */
+    protected function peek()
+    {
+        $this->lookAhead = $this->get();
+        return $this->lookAhead;
+    }
+    
+    /**
+     * Is $c a letter, digit, underscore, dollar sign, escape, or non-ASCII?
+     */
+    protected function isAlphaNum($c)
+    {
+        return (preg_match('/^[0-9a-zA-Z_\\$\\\\]$/', $c) || ord($c) > 126);
+    }
+    
+    protected function singleLineComment()
+    {
+        $comment = '';
+        while (true) {
+            $get = $this->get();
+            $comment .= $get;
+            if (ord($get) <= self::ORD_LF) { // EOL reached
+                // if IE conditional comment
+                if (preg_match('/^\\/@(?:cc_on|if|elif|else|end)\\b/', $comment)) {
+                    return "/{$comment}";
+                }
+                return $get;
+            }
+        }
+    }
+    
+    protected function multipleLineComment()
+    {
+        $this->get();
+        $comment = '';
+        while (true) {
+            $get = $this->get();
+            if ($get === '*') {
+                if ($this->peek() === '/') { // end of comment reached
+                    $this->get();
+                    // if comment preserved by YUI Compressor
+                    if (0 === strpos($comment, '!')) {
+                        return "\n/*" . substr($comment, 1) . "*/\n";
+                    }
+                    // if IE conditional comment
+                    if (preg_match('/^@(?:cc_on|if|elif|else|end)\\b/', $comment)) {
+                        return "/*{$comment}*/";
+                    }
+                    return ' ';
+                }
+            } elseif ($get === null) {
+                throw new JSMin_UnterminatedCommentException('Unterminated Comment: ' . var_export('/*' . $comment, true));
+            }
+            $comment .= $get;
+        }
+    }
+    
+    /**
+     * Get the next character, skipping over comments.
+     * Some comments may be preserved.
+     */
+    protected function next()
+    {
+        $get = $this->get();
+        if ($get !== '/') {
+            return $get;
+        }
+        switch ($this->peek()) {
+            case '/': return $this->singleLineComment();
+            case '*': return $this->multipleLineComment();
+            default: return $get;
+        }
+    }
+}
+
+class JSMin_UnterminatedStringException extends Exception {}
+class JSMin_UnterminatedCommentException extends Exception {}
+class JSMin_UnterminatedRegExpException extends Exception {}
Index: moodle/lib/minify/lib/JSMinPlus.php
--- moodle/lib/minify/lib/JSMinPlus.php No Base Revision
+++ moodle/lib/minify/lib/JSMinPlus.php Locally New
@@ -0,0 +1,1872 @@
+<?php
+
+/**
+ * JSMinPlus version 1.1
+ *
+ * Minifies a javascript file using a javascript parser
+ *
+ * This implements a PHP port of Brendan Eich's Narcissus open source javascript engine (in javascript)
+ * References: http://en.wikipedia.org/wiki/Narcissus_(JavaScript_engine)
+ * Narcissus sourcecode: http://mxr.mozilla.org/mozilla/source/js/narcissus/
+ * JSMinPlus weblog: http://crisp.tweakblogs.net/blog/cat/716
+ *
+ * Tino Zijdel <crisp@tweakers.net>
+ *
+ * Usage: $minified = JSMinPlus::minify($script [, $filename])
+ *
+ * Versionlog (see also changelog.txt):
+ * 12-04-2009 - some small bugfixes and performance improvements
+ * 09-04-2009 - initial open sourced version 1.0
+ *
+ * Latest version of this script: http://files.tweakers.net/jsminplus/jsminplus.zip
+ *
+ */
+
+/* ***** BEGIN LICENSE BLOCK *****
+ * Version: MPL 1.1/GPL 2.0/LGPL 2.1
+ *
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 1.1 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ *
+ * The Original Code is the Narcissus JavaScript engine.
+ *
+ * The Initial Developer of the Original Code is
+ * Brendan Eich <brendan@mozilla.org>.
+ * Portions created by the Initial Developer are Copyright (C) 2004
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s): Tino Zijdel <crisp@tweakers.net>
+ * PHP port, modifications and minifier routine are (C) 2009
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * either the GNU General Public License Version 2 or later (the "GPL"), or
+ * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
+ * in which case the provisions of the GPL or the LGPL are applicable instead
+ * of those above. If you wish to allow use of your version of this file only
+ * under the terms of either the GPL or the LGPL, and not to allow others to
+ * use your version of this file under the terms of the MPL, indicate your
+ * decision by deleting the provisions above and replace them with the notice
+ * and other provisions required by the GPL or the LGPL. If you do not delete
+ * the provisions above, a recipient may use your version of this file under
+ * the terms of any one of the MPL, the GPL or the LGPL.
+ *
+ * ***** END LICENSE BLOCK ***** */
+
+define('TOKEN_END', 1);
+define('TOKEN_NUMBER', 2);
+define('TOKEN_IDENTIFIER', 3);
+define('TOKEN_STRING', 4);
+define('TOKEN_REGEXP', 5);
+define('TOKEN_NEWLINE', 6);
+define('TOKEN_CONDCOMMENT_MULTILINE', 7);
+
+define('JS_SCRIPT', 100);
+define('JS_BLOCK', 101);
+define('JS_LABEL', 102);
+define('JS_FOR_IN', 103);
+define('JS_CALL', 104);
+define('JS_NEW_WITH_ARGS', 105);
+define('JS_INDEX', 106);
+define('JS_ARRAY_INIT', 107);
+define('JS_OBJECT_INIT', 108);
+define('JS_PROPERTY_INIT', 109);
+define('JS_GETTER', 110);
+define('JS_SETTER', 111);
+define('JS_GROUP', 112);
+define('JS_LIST', 113);
+
+define('DECLARED_FORM', 0);
+define('EXPRESSED_FORM', 1);
+define('STATEMENT_FORM', 2);
+
+class JSMinPlus
+{
+	private $parser;
+	private $reserved = array(
+		'break', 'case', 'catch', 'continue', 'default', 'delete', 'do',
+		'else', 'finally', 'for', 'function', 'if', 'in', 'instanceof',
+		'new', 'return', 'switch', 'this', 'throw', 'try', 'typeof', 'var',
+		'void', 'while', 'with',
+		// Words reserved for future use
+		'abstract', 'boolean', 'byte', 'char', 'class', 'const', 'debugger',
+		'double', 'enum', 'export', 'extends', 'final', 'float', 'goto',
+		'implements', 'import', 'int', 'interface', 'long', 'native',
+		'package', 'private', 'protected', 'public', 'short', 'static',
+		'super', 'synchronized', 'throws', 'transient', 'volatile',
+		// These are not reserved, but should be taken into account
+		// in isValidIdentifier (See jslint source code)
+		'arguments', 'eval', 'true', 'false', 'Infinity', 'NaN', 'null', 'undefined'
+	);
+
+	private function __construct()
+	{
+		$this->parser = new JSParser();
+	}
+
+	public static function minify($js, $filename='')
+	{
+		static $instance;
+
+		// this is a singleton
+		if(!$instance)
+			$instance = new JSMinPlus();
+
+		return $instance->min($js, $filename);
+	}
+
+	private function min($js, $filename)
+	{
+		try
+		{
+			$n = $this->parser->parse($js, $filename, 1);
+			return $this->parseTree($n);
+		}
+		catch(Exception $e)
+		{
+			echo $e->getMessage() . "\n";
+		}
+
+		return false;
+	}
+
+	private function parseTree($n, $noBlockGrouping = false)
+	{
+		$s = '';
+
+		switch ($n->type)
+		{
+			case KEYWORD_FUNCTION:
+				$s .= 'function' . ($n->name ? ' ' . $n->name : '') . '(';
+				$params = $n->params;
+				for ($i = 0, $j = count($params); $i < $j; $i++)
+					$s .= ($i ? ',' : '') . $params[$i];
+				$s .= '){' . $this->parseTree($n->body, true) . '}';
+			break;
+
+			case JS_SCRIPT:
+				// we do nothing with funDecls or varDecls
+				$noBlockGrouping = true;
+			// fall through
+			case JS_BLOCK:
+				$childs = $n->treeNodes;
+				for ($c = 0, $i = 0, $j = count($childs); $i < $j; $i++)
+				{
+					$t = $this->parseTree($childs[$i]);
+					if (strlen($t))
+					{
+						if ($c)
+						{
+							if ($childs[$i]->type == KEYWORD_FUNCTION && $childs[$i]->functionForm == DECLARED_FORM)
+								$s .= "\n"; // put declared functions on a new line
+							else
+								$s .= ';';
+						}
+
+						$s .= $t;
+
+						$c++;
+					}
+				}
+
+				if ($c > 1 && !$noBlockGrouping)
+				{
+					$s = '{' . $s . '}';
+				}
+			break;
+
+			case KEYWORD_IF:
+				$s = 'if(' . $this->parseTree($n->condition) . ')';
+				$thenPart = $this->parseTree($n->thenPart);
+				$elsePart = $n->elsePart ? $this->parseTree($n->elsePart) : null;
+
+				// quite a rancid hack to see if we should enclose the thenpart in brackets
+				if ($thenPart[0] != '{')
+				{
+					if (strpos($thenPart, 'if(') !== false)
+						$thenPart = '{' . $thenPart . '}';
+					elseif ($elsePart)
+						$thenPart .= ';';
+				}
+
+				$s .= $thenPart;
+
+				if ($elsePart)
+				{
+					$s .= 'else';
+
+					if ($elsePart[0] != '{')
+						$s .= ' ';
+
+					$s .= $elsePart;
+				}
+			break;
+
+			case KEYWORD_SWITCH:
+				$s = 'switch(' . $this->parseTree($n->discriminant) . '){';
+				$cases = $n->cases;
+				for ($i = 0, $j = count($cases); $i < $j; $i++)
+				{
+					$case = $cases[$i];
+					if ($case->type == KEYWORD_CASE)
+						$s .= 'case' . ($case->caseLabel->type != TOKEN_STRING ? ' ' : '') . $this->parseTree($case->caseLabel) . ':';
+					else
+						$s .= 'default:';
+
+					$statement = $this->parseTree($case->statements);
+					if ($statement)
+						$s .= $statement . ';';
+				}
+				$s = rtrim($s, ';') . '}';
+			break;
+
+			case KEYWORD_FOR:
+				$s = 'for(' . ($n->setup ? $this->parseTree($n->setup) : '')
+					. ';' . ($n->condition ? $this->parseTree($n->condition) : '')
+					. ';' . ($n->update ? $this->parseTree($n->update) : '') . ')'
+					. $this->parseTree($n->body);
+			break;
+
+			case KEYWORD_WHILE:
+				$s = 'while(' . $this->parseTree($n->condition) . ')' . $this->parseTree($n->body);
+			break;
+
+			case JS_FOR_IN:
+				$s = 'for(' . ($n->varDecl ? $this->parseTree($n->varDecl) : $this->parseTree($n->iterator)) . ' in ' . $this->parseTree($n->object) . ')' . $this->parseTree($n->body);
+			break;
+
+			case KEYWORD_DO:
+				$s = 'do{' . $this->parseTree($n->body, true) . '}while(' . $this->parseTree($n->condition) . ')';
+			break;
+
+			case KEYWORD_BREAK:
+			case KEYWORD_CONTINUE:
+				$s = $n->value . ($n->label ? ' ' . $n->label : '');
+			break;
+
+			case KEYWORD_TRY:
+				$s = 'try{' . $this->parseTree($n->tryBlock, true) . '}';
+				$catchClauses = $n->catchClauses;
+				for ($i = 0, $j = count($catchClauses); $i < $j; $i++)
+				{
+					$t = $catchClauses[$i];
+					$s .= 'catch(' . $t->varName . ($t->guard ? ' if ' . $this->parseTree($t->guard) : '') . '){' . $this->parseTree($t->block, true) . '}';
+				}
+				if ($n->finallyBlock)
+					$s .= 'finally{' . $this->parseTree($n->finallyBlock, true) . '}';
+			break;
+
+			case KEYWORD_THROW:
+				$s = 'throw ' . $this->parseTree($n->exception);
+			break;
+
+			case KEYWORD_RETURN:
+				$s = 'return' . ($n->value ? ' ' . $this->parseTree($n->value) : '');
+			break;
+
+			case KEYWORD_WITH:
+				$s = 'with(' . $this->parseTree($n->object) . ')' . $this->parseTree($n->body);
+			break;
+
+			case KEYWORD_VAR:
+			case KEYWORD_CONST:
+				$s = $n->value . ' ';
+				$childs = $n->treeNodes;
+				for ($i = 0, $j = count($childs); $i < $j; $i++)
+				{
+					$t = $childs[$i];
+					$s .= ($i ? ',' : '') . $t->name;
+					$u = $t->initializer;
+					if ($u)
+						$s .= '=' . $this->parseTree($u);
+				}
+			break;
+
+			case KEYWORD_DEBUGGER:
+				throw new Exception('NOT IMPLEMENTED: DEBUGGER');
+			break;
+
+			case TOKEN_CONDCOMMENT_MULTILINE:
+				$s = $n->value . ' ';
+				$childs = $n->treeNodes;
+				for ($i = 0, $j = count($childs); $i < $j; $i++)
+					$s .= $this->parseTree($childs[$i]);
+			break;
+
+			case OP_SEMICOLON:
+				if ($expression = $n->expression)
+					$s = $this->parseTree($expression);
+			break;
+
+			case JS_LABEL:
+				$s = $n->label . ':' . $this->parseTree($n->statement);
+			break;
+
+			case OP_COMMA:
+				$childs = $n->treeNodes;
+				for ($i = 0, $j = count($childs); $i < $j; $i++)
+					$s .= ($i ? ',' : '') . $this->parseTree($childs[$i]);
+			break;
+
+			case OP_ASSIGN:
+				$s = $this->parseTree($n->treeNodes[0]) . $n->value . $this->parseTree($n->treeNodes[1]);
+			break;
+
+			case OP_HOOK:
+				$s = $this->parseTree($n->treeNodes[0]) . '?' . $this->parseTree($n->treeNodes[1]) . ':' . $this->parseTree($n->treeNodes[2]);
+			break;
+
+			case OP_OR: case OP_AND:
+			case OP_BITWISE_OR: case OP_BITWISE_XOR: case OP_BITWISE_AND:
+			case OP_EQ: case OP_NE: case OP_STRICT_EQ: case OP_STRICT_NE:
+			case OP_LT: case OP_LE: case OP_GE: case OP_GT:
+			case OP_LSH: case OP_RSH: case OP_URSH:
+			case OP_MUL: case OP_DIV: case OP_MOD:
+				$s = $this->parseTree($n->treeNodes[0]) . $n->type . $this->parseTree($n->treeNodes[1]);
+			break;
+
+			case OP_PLUS:
+			case OP_MINUS:
+				$s = $this->parseTree($n->treeNodes[0]) . $n->type;
+				$nextTokenType = $n->treeNodes[1]->type;
+				if (	$nextTokenType == OP_PLUS || $nextTokenType == OP_MINUS ||
+					$nextTokenType == OP_INCREMENT || $nextTokenType == OP_DECREMENT ||
+					$nextTokenType == OP_UNARY_PLUS || $nextTokenType == OP_UNARY_MINUS
+				)
+					$s .= ' ';
+				$s .= $this->parseTree($n->treeNodes[1]);
+			break;
+
+			case KEYWORD_IN:
+				$s = $this->parseTree($n->treeNodes[0]) . ' in ' . $this->parseTree($n->treeNodes[1]);
+			break;
+
+			case KEYWORD_INSTANCEOF:
+				$s = $this->parseTree($n->treeNodes[0]) . ' instanceof ' . $this->parseTree($n->treeNodes[1]);
+			break;
+
+			case KEYWORD_DELETE:
+				$s = 'delete ' . $this->parseTree($n->treeNodes[0]);
+			break;
+
+			case KEYWORD_VOID:
+				$s = 'void(' . $this->parseTree($n->treeNodes[0]) . ')';
+			break;
+
+			case KEYWORD_TYPEOF:
+				$s = 'typeof ' . $this->parseTree($n->treeNodes[0]);
+			break;
+
+			case OP_NOT:
+			case OP_BITWISE_NOT:
+			case OP_UNARY_PLUS:
+			case OP_UNARY_MINUS:
+				$s = $n->value . $this->parseTree($n->treeNodes[0]);
+			break;
+
+			case OP_INCREMENT:
+			case OP_DECREMENT:
+				if ($n->postfix)
+					$s = $this->parseTree($n->treeNodes[0]) . $n->value;
+				else
+					$s = $n->value . $this->parseTree($n->treeNodes[0]);
+			break;
+
+			case OP_DOT:
+				$s = $this->parseTree($n->treeNodes[0]) . '.' . $this->parseTree($n->treeNodes[1]);
+			break;
+
+			case JS_INDEX:
+				$s = $this->parseTree($n->treeNodes[0]);
+				// See if we can replace named index with a dot saving 3 bytes
+				if (	$n->treeNodes[0]->type == TOKEN_IDENTIFIER &&
+					$n->treeNodes[1]->type == TOKEN_STRING &&
+					$this->isValidIdentifier(substr($n->treeNodes[1]->value, 1, -1))
+				)
+					$s .= '.' . substr($n->treeNodes[1]->value, 1, -1);
+				else
+					$s .= '[' . $this->parseTree($n->treeNodes[1]) . ']';
+			break;
+
+			case JS_LIST:
+				$childs = $n->treeNodes;
+				for ($i = 0, $j = count($childs); $i < $j; $i++)
+					$s .= ($i ? ',' : '') . $this->parseTree($childs[$i]);
+			break;
+
+			case JS_CALL:
+				$s = $this->parseTree($n->treeNodes[0]) . '(' . $this->parseTree($n->treeNodes[1]) . ')';
+			break;
+
+			case KEYWORD_NEW:
+			case JS_NEW_WITH_ARGS:
+				$s = 'new ' . $this->parseTree($n->treeNodes[0]) . '(' . ($n->type == JS_NEW_WITH_ARGS ? $this->parseTree($n->treeNodes[1]) : '') . ')';
+			break;
+
+			case JS_ARRAY_INIT:
+				$s = '[';
+				$childs = $n->treeNodes;
+				for ($i = 0, $j = count($childs); $i < $j; $i++)
+				{
+					$s .= ($i ? ',' : '') . $this->parseTree($childs[$i]);
+				}
+				$s .= ']';
+			break;
+
+			case JS_OBJECT_INIT:
+				$s = '{';
+				$childs = $n->treeNodes;
+				for ($i = 0, $j = count($childs); $i < $j; $i++)
+				{
+					$t = $childs[$i];
+					if ($i)
+						$s .= ',';
+					if ($t->type == JS_PROPERTY_INIT)
+					{
+						// Ditch the quotes when the index is a valid identifier
+						if (	$t->treeNodes[0]->type == TOKEN_STRING &&
+							$this->isValidIdentifier(substr($t->treeNodes[0]->value, 1, -1))
+						)
+							$s .= substr($t->treeNodes[0]->value, 1, -1);
+						else
+							$s .= $t->treeNodes[0]->value;
+
+						$s .= ':' . $this->parseTree($t->treeNodes[1]);
+					}
+					else
+					{
+						$s .= $t->type == JS_GETTER ? 'get' : 'set';
+						$s .= ' ' . $t->name . '(';
+						$params = $t->params;
+						for ($i = 0, $j = count($params); $i < $j; $i++)
+							$s .= ($i ? ',' : '') . $params[$i];
+						$s .= '){' . $this->parseTree($t->body, true) . '}';
+					}
+				}
+				$s .= '}';
+			break;
+
+			case KEYWORD_NULL: case KEYWORD_THIS: case KEYWORD_TRUE: case KEYWORD_FALSE:
+			case TOKEN_IDENTIFIER: case TOKEN_NUMBER: case TOKEN_STRING: case TOKEN_REGEXP:
+				$s = $n->value;
+			break;
+
+			case JS_GROUP:
+				$s = '(' . $this->parseTree($n->treeNodes[0]) . ')';
+			break;
+
+			default:
+				throw new Exception('UNKNOWN TOKEN TYPE: ' . $n->type);
+		}
+
+		return $s;
+	}
+
+	private function isValidIdentifier($string)
+	{
+		return preg_match('/^[a-zA-Z_][a-zA-Z0-9_]*$/', $string) && !in_array($string, $this->reserved);
+	}
+}
+
+class JSParser
+{
+	private $t;
+
+	private $opPrecedence = array(
+		';' => 0,
+		',' => 1,
+		'=' => 2, '?' => 2, ':' => 2,
+		// The above all have to have the same precedence, see bug 330975.
+		'||' => 4,
+		'&&' => 5,
+		'|' => 6,
+		'^' => 7,
+		'&' => 8,
+		'==' => 9, '!=' => 9, '===' => 9, '!==' => 9,
+		'<' => 10, '<=' => 10, '>=' => 10, '>' => 10, 'in' => 10, 'instanceof' => 10,
+		'<<' => 11, '>>' => 11, '>>>' => 11,
+		'+' => 12, '-' => 12,
+		'*' => 13, '/' => 13, '%' => 13,
+		'delete' => 14, 'void' => 14, 'typeof' => 14,
+		'!' => 14, '~' => 14, 'U+' => 14, 'U-' => 14,
+		'++' => 15, '--' => 15,
+		'new' => 16,
+		'.' => 17,
+		JS_NEW_WITH_ARGS => 0, JS_INDEX => 0, JS_CALL => 0,
+		JS_ARRAY_INIT => 0, JS_OBJECT_INIT => 0, JS_GROUP => 0
+	);
+
+	private $opArity = array(
+		',' => -2,
+		'=' => 2,
+		'?' => 3,
+		'||' => 2,
+		'&&' => 2,
+		'|' => 2,
+		'^' => 2,
+		'&' => 2,
+		'==' => 2, '!=' => 2, '===' => 2, '!==' => 2,
+		'<' => 2, '<=' => 2, '>=' => 2, '>' => 2, 'in' => 2, 'instanceof' => 2,
+		'<<' => 2, '>>' => 2, '>>>' => 2,
+		'+' => 2, '-' => 2,
+		'*' => 2, '/' => 2, '%' => 2,
+		'delete' => 1, 'void' => 1, 'typeof' => 1,
+		'!' => 1, '~' => 1, 'U+' => 1, 'U-' => 1,
+		'++' => 1, '--' => 1,
+		'new' => 1,
+		'.' => 2,
+		JS_NEW_WITH_ARGS => 2, JS_INDEX => 2, JS_CALL => 2,
+		JS_ARRAY_INIT => 1, JS_OBJECT_INIT => 1, JS_GROUP => 1,
+		TOKEN_CONDCOMMENT_MULTILINE => 1
+	);
+
+	public function __construct()
+	{
+		$this->t = new JSTokenizer();
+	}
+
+	public function parse($s, $f, $l)
+	{
+		// initialize tokenizer
+		$this->t->init($s, $f, $l);
+
+		$x = new JSCompilerContext(false);
+		$n = $this->Script($x);
+		if (!$this->t->isDone())
+			throw $this->t->newSyntaxError('Syntax error');
+
+		return $n;
+	}
+
+	private function Script($x)
+	{
+		$n = $this->Statements($x);
+		$n->type = JS_SCRIPT;
+		$n->funDecls = $x->funDecls;
+		$n->varDecls = $x->varDecls;
+
+		return $n;
+	}
+
+	private function Statements($x)
+	{
+		$n = new JSNode($this->t, JS_BLOCK);
+		array_push($x->stmtStack, $n);
+
+		while (!$this->t->isDone() && $this->t->peek() != OP_RIGHT_CURLY)
+			$n->addNode($this->Statement($x));
+
+		array_pop($x->stmtStack);
+
+		return $n;
+	}
+
+	private function Block($x)
+	{
+		$this->t->mustMatch(OP_LEFT_CURLY);
+		$n = $this->Statements($x);
+		$this->t->mustMatch(OP_RIGHT_CURLY);
+
+		return $n;
+	}
+
+	private function Statement($x)
+	{
+		$tt = $this->t->get();
+		$n2 = null;
+
+		// Cases for statements ending in a right curly return early, avoiding the
+		// common semicolon insertion magic after this switch.
+		switch ($tt)
+		{
+			case KEYWORD_FUNCTION:
+				return $this->FunctionDefinition(
+					$x,
+					true,
+					count($x->stmtStack) > 1 ? STATEMENT_FORM : DECLARED_FORM
+				);
+			break;
+
+			case OP_LEFT_CURLY:
+				$n = $this->Statements($x);
+				$this->t->mustMatch(OP_RIGHT_CURLY);
+			return $n;
+
+			case KEYWORD_IF:
+				$n = new JSNode($this->t);
+				$n->condition = $this->ParenExpression($x);
+				array_push($x->stmtStack, $n);
+				$n->thenPart = $this->Statement($x);
+				$n->elsePart = $this->t->match(KEYWORD_ELSE) ? $this->Statement($x) : null;
+				array_pop($x->stmtStack);
+			return $n;
+
+			case KEYWORD_SWITCH:
+				$n = new JSNode($this->t);
+				$this->t->mustMatch(OP_LEFT_PAREN);
+				$n->discriminant = $this->Expression($x);
+				$this->t->mustMatch(OP_RIGHT_PAREN);
+				$n->cases = array();
+				$n->defaultIndex = -1;
+
+				array_push($x->stmtStack, $n);
+
+				$this->t->mustMatch(OP_LEFT_CURLY);
+
+				while (($tt = $this->t->get()) != OP_RIGHT_CURLY)
+				{
+					switch ($tt)
+					{
+						case KEYWORD_DEFAULT:
+							if ($n->defaultIndex >= 0)
+								throw $this->t->newSyntaxError('More than one switch default');
+							// FALL THROUGH
+						case KEYWORD_CASE:
+							$n2 = new JSNode($this->t);
+							if ($tt == KEYWORD_DEFAULT)
+								$n->defaultIndex = count($n->cases);
+							else
+								$n2->caseLabel = $this->Expression($x, OP_COLON);
+								break;
+						default:
+							throw $this->t->newSyntaxError('Invalid switch case');
+					}
+
+					$this->t->mustMatch(OP_COLON);
+					$n2->statements = new JSNode($this->t, JS_BLOCK);
+					while (($tt = $this->t->peek()) != KEYWORD_CASE && $tt != KEYWORD_DEFAULT && $tt != OP_RIGHT_CURLY)
+						$n2->statements->addNode($this->Statement($x));
+
+					array_push($n->cases, $n2);
+				}
+
+				array_pop($x->stmtStack);
+			return $n;
+
+			case KEYWORD_FOR:
+				$n = new JSNode($this->t);
+				$n->isLoop = true;
+				$this->t->mustMatch(OP_LEFT_PAREN);
+
+				if (($tt = $this->t->peek()) != OP_SEMICOLON)
+				{
+					$x->inForLoopInit = true;
+					if ($tt == KEYWORD_VAR || $tt == KEYWORD_CONST)
+					{
+						$this->t->get();
+						$n2 = $this->Variables($x);
+					}
+					else
+					{
+						$n2 = $this->Expression($x);
+					}
+					$x->inForLoopInit = false;
+				}
+
+				if ($n2 && $this->t->match(KEYWORD_IN))
+				{
+					$n->type = JS_FOR_IN;
+					if ($n2->type == KEYWORD_VAR)
+					{
+						if (count($n2->treeNodes) != 1)
+						{
+							throw $this->t->SyntaxError(
+								'Invalid for..in left-hand side',
+								$this->t->filename,
+								$n2->lineno
+							);
+						}
+
+						// NB: n2[0].type == IDENTIFIER and n2[0].value == n2[0].name.
+						$n->iterator = $n2->treeNodes[0];
+						$n->varDecl = $n2;
+					}
+					else
+					{
+						$n->iterator = $n2;
+						$n->varDecl = null;
+					}
+
+					$n->object = $this->Expression($x);
+				}
+				else
+				{
+					$n->setup = $n2 ? $n2 : null;
+					$this->t->mustMatch(OP_SEMICOLON);
+					$n->condition = $this->t->peek() == OP_SEMICOLON ? null : $this->Expression($x);
+					$this->t->mustMatch(OP_SEMICOLON);
+					$n->update = $this->t->peek() == OP_RIGHT_PAREN ? null : $this->Expression($x);
+				}
+
+				$this->t->mustMatch(OP_RIGHT_PAREN);
+				$n->body = $this->nest($x, $n);
+			return $n;
+
+			case KEYWORD_WHILE:
+			        $n = new JSNode($this->t);
+			        $n->isLoop = true;
+			        $n->condition = $this->ParenExpression($x);
+			        $n->body = $this->nest($x, $n);
+			return $n;
+
+			case KEYWORD_DO:
+				$n = new JSNode($this->t);
+				$n->isLoop = true;
+				$n->body = $this->nest($x, $n, KEYWORD_WHILE);
+				$n->condition = $this->ParenExpression($x);
+				if (!$x->ecmaStrictMode)
+				{
+					// <script language="JavaScript"> (without version hints) may need
+					// automatic semicolon insertion without a newline after do-while.
+					// See http://bugzilla.mozilla.org/show_bug.cgi?id=238945.
+					$this->t->match(OP_SEMICOLON);
+					return $n;
+				}
+			break;
+
+			case KEYWORD_BREAK:
+			case KEYWORD_CONTINUE:
+				$n = new JSNode($this->t);
+
+				if ($this->t->peekOnSameLine() == TOKEN_IDENTIFIER)
+				{
+					$this->t->get();
+					$n->label = $this->t->currentToken()->value;
+				}
+
+				$ss = $x->stmtStack;
+				$i = count($ss);
+				$label = $n->label;
+				if ($label)
+				{
+					do
+					{
+						if (--$i < 0)
+							throw $this->t->newSyntaxError('Label not found');
+					}
+					while ($ss[$i]->label != $label);
+				}
+				else
+				{
+					do
+					{
+						if (--$i < 0)
+							throw $this->t->newSyntaxError('Invalid ' . $tt);
+					}
+					while (!$ss[$i]->isLoop && ($tt != KEYWORD_BREAK || $ss[$i]->type != KEYWORD_SWITCH));
+				}
+
+				$n->target = $ss[$i];
+			break;
+
+			case KEYWORD_TRY:
+				$n = new JSNode($this->t);
+				$n->tryBlock = $this->Block($x);
+				$n->catchClauses = array();
+
+				while ($this->t->match(KEYWORD_CATCH))
+				{
+					$n2 = new JSNode($this->t);
+					$this->t->mustMatch(OP_LEFT_PAREN);
+					$n2->varName = $this->t->mustMatch(TOKEN_IDENTIFIER)->value;
+
+					if ($this->t->match(KEYWORD_IF))
+					{
+						if ($x->ecmaStrictMode)
+							throw $this->t->newSyntaxError('Illegal catch guard');
+
+						if (count($n->catchClauses) && !end($n->catchClauses)->guard)
+							throw $this->t->newSyntaxError('Guarded catch after unguarded');
+
+						$n2->guard = $this->Expression($x);
+					}
+					else
+					{
+						$n2->guard = null;
+					}
+
+					$this->t->mustMatch(OP_RIGHT_PAREN);
+					$n2->block = $this->Block($x);
+					array_push($n->catchClauses, $n2);
+				}
+
+				if ($this->t->match(KEYWORD_FINALLY))
+					$n->finallyBlock = $this->Block($x);
+
+				if (!count($n->catchClauses) && !$n->finallyBlock)
+					throw $this->t->newSyntaxError('Invalid try statement');
+			return $n;
+
+			case KEYWORD_CATCH:
+			case KEYWORD_FINALLY:
+				throw $this->t->newSyntaxError($tt + ' without preceding try');
+
+			case KEYWORD_THROW:
+				$n = new JSNode($this->t);
+				$n->exception = $this->Expression($x);
+			break;
+
+			case KEYWORD_RETURN:
+				if (!$x->inFunction)
+					throw $this->t->newSyntaxError('Invalid return');
+
+				$n = new JSNode($this->t);
+				$tt = $this->t->peekOnSameLine();
+				if ($tt != TOKEN_END && $tt != TOKEN_NEWLINE && $tt != OP_SEMICOLON && $tt != OP_RIGHT_CURLY)
+					$n->value = $this->Expression($x);
+				else
+					$n->value = null;
+			break;
+
+			case KEYWORD_WITH:
+				$n = new JSNode($this->t);
+				$n->object = $this->ParenExpression($x);
+				$n->body = $this->nest($x, $n);
+			return $n;
+
+			case KEYWORD_VAR:
+			case KEYWORD_CONST:
+			        $n = $this->Variables($x);
+			break;
+
+			case TOKEN_CONDCOMMENT_MULTILINE:
+				$n = new JSNode($this->t);
+			return $n;
+
+			case KEYWORD_DEBUGGER:
+				$n = new JSNode($this->t);
+			break;
+
+			case TOKEN_NEWLINE:
+			case OP_SEMICOLON:
+				$n = new JSNode($this->t, OP_SEMICOLON);
+				$n->expression = null;
+			return $n;
+
+			default:
+				if ($tt == TOKEN_IDENTIFIER)
+				{
+					$this->t->scanOperand = false;
+					$tt = $this->t->peek();
+					$this->t->scanOperand = true;
+					if ($tt == OP_COLON)
+					{
+						$label = $this->t->currentToken()->value;
+						$ss = $x->stmtStack;
+						for ($i = count($ss) - 1; $i >= 0; --$i)
+						{
+							if ($ss[$i]->label == $label)
+								throw $this->t->newSyntaxError('Duplicate label');
+						}
+
+						$this->t->get();
+						$n = new JSNode($this->t, JS_LABEL);
+						$n->label = $label;
+						$n->statement = $this->nest($x, $n);
+
+						return $n;
+					}
+				}
+
+				$n = new JSNode($this->t, OP_SEMICOLON);
+				$this->t->unget();
+				$n->expression = $this->Expression($x);
+				$n->end = $n->expression->end;
+			break;
+		}
+
+		if ($this->t->lineno == $this->t->currentToken()->lineno)
+		{
+			$tt = $this->t->peekOnSameLine();
+			if ($tt != TOKEN_END && $tt != TOKEN_NEWLINE && $tt != OP_SEMICOLON && $tt != OP_RIGHT_CURLY)
+				throw $this->t->newSyntaxError('Missing ; before statement');
+		}
+
+		$this->t->match(OP_SEMICOLON);
+
+		return $n;
+	}
+
+	private function FunctionDefinition($x, $requireName, $functionForm)
+	{
+		$f = new JSNode($this->t);
+
+		if ($f->type != KEYWORD_FUNCTION)
+			$f->type = ($f->value == 'get') ? JS_GETTER : JS_SETTER;
+
+		if ($this->t->match(TOKEN_IDENTIFIER))
+			$f->name = $this->t->currentToken()->value;
+		elseif ($requireName)
+			throw $this->t->newSyntaxError('Missing function identifier');
+
+		$this->t->mustMatch(OP_LEFT_PAREN);
+			$f->params = array();
+
+		while (($tt = $this->t->get()) != OP_RIGHT_PAREN)
+		{
+			if ($tt != TOKEN_IDENTIFIER)
+				throw $this->t->newSyntaxError('Missing formal parameter');
+
+			array_push($f->params, $this->t->currentToken()->value);
+
+			if ($this->t->peek() != OP_RIGHT_PAREN)
+				$this->t->mustMatch(OP_COMMA);
+		}
+
+		$this->t->mustMatch(OP_LEFT_CURLY);
+
+		$x2 = new JSCompilerContext(true);
+		$f->body = $this->Script($x2);
+
+		$this->t->mustMatch(OP_RIGHT_CURLY);
+		$f->end = $this->t->currentToken()->end;
+
+		$f->functionForm = $functionForm;
+		if ($functionForm == DECLARED_FORM)
+			array_push($x->funDecls, $f);
+
+		return $f;
+	}
+
+	private function Variables($x)
+	{
+		$n = new JSNode($this->t);
+
+		do
+		{
+			$this->t->mustMatch(TOKEN_IDENTIFIER);
+
+			$n2 = new JSNode($this->t);
+			$n2->name = $n2->value;
+
+			if ($this->t->match(OP_ASSIGN))
+			{
+				if ($this->t->currentToken()->assignOp)
+					throw $this->t->newSyntaxError('Invalid variable initialization');
+
+				$n2->initializer = $this->Expression($x, OP_COMMA);
+			}
+
+			$n2->readOnly = $n->type == KEYWORD_CONST;
+
+			$n->addNode($n2);
+			array_push($x->varDecls, $n2);
+		}
+		while ($this->t->match(OP_COMMA));
+
+		return $n;
+	}
+
+	private function Expression($x, $stop=false)
+	{
+		$operators = array();
+		$operands = array();
+		$n = false;
+
+		$bl = $x->bracketLevel;
+		$cl = $x->curlyLevel;
+		$pl = $x->parenLevel;
+		$hl = $x->hookLevel;
+
+		while (($tt = $this->t->get()) != TOKEN_END)
+		{
+			if ($tt == $stop &&
+				$x->bracketLevel == $bl &&
+				$x->curlyLevel == $cl &&
+				$x->parenLevel == $pl &&
+				$x->hookLevel == $hl
+			)
+			{
+				// Stop only if tt matches the optional stop parameter, and that
+				// token is not quoted by some kind of bracket.
+				break;
+			}
+
+			switch ($tt)
+			{
+				case OP_SEMICOLON:
+					// NB: cannot be empty, Statement handled that.
+					break 2;
+
+				case OP_ASSIGN:
+				case OP_HOOK:
+				case OP_COLON:
+					if ($this->t->scanOperand)
+						break 2;
+
+					// Use >, not >=, for right-associative ASSIGN and HOOK/COLON.
+					while (	!empty($operators) &&
+						(	$this->opPrecedence[end($operators)->type] > $this->opPrecedence[$tt] ||
+							($tt == OP_COLON && end($operators)->type == OP_ASSIGN)
+						)
+					)
+						$this->reduce($operators, $operands);
+
+					if ($tt == OP_COLON)
+					{
+						$n = end($operators);
+						if ($n->type != OP_HOOK)
+							throw $this->t->newSyntaxError('Invalid label');
+
+						--$x->hookLevel;
+					}
+					else
+					{
+						array_push($operators, new JSNode($this->t));
+						if ($tt == OP_ASSIGN)
+							end($operands)->assignOp = $this->t->currentToken()->assignOp;
+						else
+							++$x->hookLevel;
+					}
+
+					$this->t->scanOperand = true;
+				break;
+
+				case KEYWORD_IN:
+					// An in operator should not be parsed if we're parsing the head of
+					// a for (...) loop, unless it is in the then part of a conditional
+					// expression, or parenthesized somehow.
+					if ($x->inForLoopInit && !$x->hookLevel &&
+						!$x->bracketLevel && !$x->curlyLevel &&
+						!$x->parenLevel
+					)
+					{
+						break 2;
+					}
+				// FALL THROUGH
+				case OP_COMMA:
+					// Treat comma as left-associative so reduce can fold left-heavy
+					// COMMA trees into a single array.
+					// FALL THROUGH
+				case OP_OR:
+				case OP_AND:
+				case OP_BITWISE_OR:
+				case OP_BITWISE_XOR:
+				case OP_BITWISE_AND:
+				case OP_EQ: case OP_NE: case OP_STRICT_EQ: case OP_STRICT_NE:
+				case OP_LT: case OP_LE: case OP_GE: case OP_GT:
+				case KEYWORD_INSTANCEOF:
+				case OP_LSH: case OP_RSH: case OP_URSH:
+				case OP_PLUS: case OP_MINUS:
+				case OP_MUL: case OP_DIV: case OP_MOD:
+				case OP_DOT:
+					if ($this->t->scanOperand)
+						break 2;
+
+					while (	!empty($operators) &&
+						$this->opPrecedence[end($operators)->type] >= $this->opPrecedence[$tt]
+					)
+						$this->reduce($operators, $operands);
+
+					if ($tt == OP_DOT)
+					{
+						$this->t->mustMatch(TOKEN_IDENTIFIER);
+						array_push($operands, new JSNode($this->t, OP_DOT, array_pop($operands), new JSNode($this->t)));
+					}
+					else
+					{
+						array_push($operators, new JSNode($this->t));
+						$this->t->scanOperand = true;
+					}
+				break;
+
+				case KEYWORD_DELETE: case KEYWORD_VOID: case KEYWORD_TYPEOF:
+				case OP_NOT: case OP_BITWISE_NOT: case OP_UNARY_PLUS: case OP_UNARY_MINUS:
+				case KEYWORD_NEW:
+					if (!$this->t->scanOperand)
+						break 2;
+
+					array_push($operators, new JSNode($this->t));
+				break;
+
+				case OP_INCREMENT: case OP_DECREMENT:
+					if ($this->t->scanOperand)
+					{
+						array_push($operators, new JSNode($this->t));  // prefix increment or decrement
+					}
+					else
+					{
+						// Don't cross a line boundary for postfix {in,de}crement.
+						$t = $this->t->tokens[($this->t->tokenIndex + $this->t->lookahead - 1) & 3];
+						if ($t && $t->lineno != $this->t->lineno)
+							break 2;
+
+						if (!empty($operators))
+						{
+							// Use >, not >=, so postfix has higher precedence than prefix.
+							while ($this->opPrecedence[end($operators)->type] > $this->opPrecedence[$tt])
+								$this->reduce($operators, $operands);
+						}
+
+						$n = new JSNode($this->t, $tt, array_pop($operands));
+						$n->postfix = true;
+						array_push($operands, $n);
+					}
+				break;
+
+				case KEYWORD_FUNCTION:
+					if (!$this->t->scanOperand)
+						break 2;
+
+					array_push($operands, $this->FunctionDefinition($x, false, EXPRESSED_FORM));
+					$this->t->scanOperand = false;
+				break;
+
+				case KEYWORD_NULL: case KEYWORD_THIS: case KEYWORD_TRUE: case KEYWORD_FALSE:
+				case TOKEN_IDENTIFIER: case TOKEN_NUMBER: case TOKEN_STRING: case TOKEN_REGEXP:
+					if (!$this->t->scanOperand)
+						break 2;
+
+					array_push($operands, new JSNode($this->t));
+					$this->t->scanOperand = false;
+				break;
+
+				case TOKEN_CONDCOMMENT_MULTILINE:
+					if ($this->t->scanOperand)
+						array_push($operators, new JSNode($this->t));
+					else
+						array_push($operands, new JSNode($this->t));
+				break;
+
+				case OP_LEFT_BRACKET:
+					if ($this->t->scanOperand)
+					{
+						// Array initialiser.  Parse using recursive descent, as the
+						// sub-grammar here is not an operator grammar.
+						$n = new JSNode($this->t, JS_ARRAY_INIT);
+						while (($tt = $this->t->peek()) != OP_RIGHT_BRACKET)
+						{
+							if ($tt == OP_COMMA)
+							{
+								$this->t->get();
+								$n->addNode(null);
+								continue;
+							}
+
+							$n->addNode($this->Expression($x, OP_COMMA));
+							if (!$this->t->match(OP_COMMA))
+								break;
+						}
+
+						$this->t->mustMatch(OP_RIGHT_BRACKET);
+						array_push($operands, $n);
+						$this->t->scanOperand = false;
+					}
+					else
+					{
+						// Property indexing operator.
+						array_push($operators, new JSNode($this->t, JS_INDEX));
+						$this->t->scanOperand = true;
+						++$x->bracketLevel;
+					}
+				break;
+
+				case OP_RIGHT_BRACKET:
+					if ($this->t->scanOperand || $x->bracketLevel == $bl)
+						break 2;
+
+					while ($this->reduce($operators, $operands)->type != JS_INDEX)
+						continue;
+
+					--$x->bracketLevel;
+				break;
+
+				case OP_LEFT_CURLY:
+					if (!$this->t->scanOperand)
+						break 2;
+
+					// Object initialiser.  As for array initialisers (see above),
+					// parse using recursive descent.
+					++$x->curlyLevel;
+					$n = new JSNode($this->t, JS_OBJECT_INIT);
+					while (!$this->t->match(OP_RIGHT_CURLY))
+					{
+						do
+						{
+							$tt = $this->t->get();
+							$tv = $this->t->currentToken()->value;
+							if (($tv == 'get' || $tv == 'set') && $this->t->peek() == TOKEN_IDENTIFIER)
+							{
+								if ($x->ecmaStrictMode)
+									throw $this->t->newSyntaxError('Illegal property accessor');
+
+								$n->addNode($this->FunctionDefinition($x, true, EXPRESSED_FORM));
+							}
+							else
+							{
+								switch ($tt)
+								{
+									case TOKEN_IDENTIFIER:
+									case TOKEN_NUMBER:
+									case TOKEN_STRING:
+										$id = new JSNode($this->t);
+									break;
+
+									case OP_RIGHT_CURLY:
+										if ($x->ecmaStrictMode)
+											throw $this->t->newSyntaxError('Illegal trailing ,');
+									break 3;
+
+									default:
+										throw $this->t->newSyntaxError('Invalid property name');
+								}
+
+								$this->t->mustMatch(OP_COLON);
+								$n->addNode(new JSNode($this->t, JS_PROPERTY_INIT, $id, $this->Expression($x, OP_COMMA)));
+							}
+						}
+						while ($this->t->match(OP_COMMA));
+
+						$this->t->mustMatch(OP_RIGHT_CURLY);
+						break;
+					}
+
+					array_push($operands, $n);
+					$this->t->scanOperand = false;
+					--$x->curlyLevel;
+				break;
+
+				case OP_RIGHT_CURLY:
+					if (!$this->t->scanOperand && $x->curlyLevel != $cl)
+						throw new Exception('PANIC: right curly botch');
+				break 2;
+
+				case OP_LEFT_PAREN:
+					if ($this->t->scanOperand)
+					{
+						array_push($operators, new JSNode($this->t, JS_GROUP));
+					}
+					else
+					{
+						while (	!empty($operators) &&
+							$this->opPrecedence[end($operators)->type] > $this->opPrecedence[KEYWORD_NEW]
+						)
+							$this->reduce($operators, $operands);
+
+						// Handle () now, to regularize the n-ary case for n > 0.
+						// We must set scanOperand in case there are arguments and
+						// the first one is a regexp or unary+/-.
+						$n = end($operators);
+						$this->t->scanOperand = true;
+						if ($this->t->match(OP_RIGHT_PAREN))
+						{
+							if ($n && $n->type == KEYWORD_NEW)
+							{
+								array_pop($operators);
+								$n->addNode(array_pop($operands));
+							}
+							else
+							{
+								$n = new JSNode($this->t, JS_CALL, array_pop($operands), new JSNode($this->t, JS_LIST));
+							}
+
+							array_push($operands, $n);
+							$this->t->scanOperand = false;
+							break;
+						}
+
+						if ($n && $n->type == KEYWORD_NEW)
+							$n->type = JS_NEW_WITH_ARGS;
+						else
+							array_push($operators, new JSNode($this->t, JS_CALL));
+					}
+
+					++$x->parenLevel;
+				break;
+
+				case OP_RIGHT_PAREN:
+					if ($this->t->scanOperand || $x->parenLevel == $pl)
+						break 2;
+
+					while (($tt = $this->reduce($operators, $operands)->type) != JS_GROUP &&
+						$tt != JS_CALL && $tt != JS_NEW_WITH_ARGS
+					)
+					{
+						continue;
+					}
+
+					if ($tt != JS_GROUP)
+					{
+						$n = end($operands);
+						if ($n->treeNodes[1]->type != OP_COMMA)
+							$n->treeNodes[1] = new JSNode($this->t, JS_LIST, $n->treeNodes[1]);
+						else
+							$n->treeNodes[1]->type = JS_LIST;
+					}
+
+					--$x->parenLevel;
+				break;
+
+				// Automatic semicolon insertion means we may scan across a newline
+				// and into the beginning of another statement.  If so, break out of
+				// the while loop and let the t.scanOperand logic handle errors.
+				default:
+					break 2;
+			}
+		}
+
+		if ($x->hookLevel != $hl)
+			throw $this->t->newSyntaxError('Missing : after ?');
+
+		if ($x->parenLevel != $pl)
+			throw $this->t->newSyntaxError('Missing ) in parenthetical');
+
+		if ($x->bracketLevel != $bl)
+			throw $this->t->newSyntaxError('Missing ] in index expression');
+
+		if ($this->t->scanOperand)
+			throw $this->t->newSyntaxError('Missing operand');
+
+		// Resume default mode, scanning for operands, not operators.
+		$this->t->scanOperand = true;
+		$this->t->unget();
+
+		while (count($operators))
+			$this->reduce($operators, $operands);
+
+		return array_pop($operands);
+	}
+
+	private function ParenExpression($x)
+	{
+		$this->t->mustMatch(OP_LEFT_PAREN);
+		$n = $this->Expression($x);
+		$this->t->mustMatch(OP_RIGHT_PAREN);
+
+		return $n;
+	}
+
+	// Statement stack and nested statement handler.
+	private function nest($x, $node, $end = false)
+	{
+		array_push($x->stmtStack, $node);
+		$n = $this->statement($x);
+		array_pop($x->stmtStack);
+
+		if ($end)
+			$this->t->mustMatch($end);
+
+		return $n;
+	}
+
+	private function reduce(&$operators, &$operands)
+	{
+		$n = array_pop($operators);
+		$op = $n->type;
+		$arity = $this->opArity[$op];
+		$c = count($operands);
+		if ($arity == -2)
+		{
+			// Flatten left-associative trees
+			if ($c >= 2)
+			{
+				$left = $operands[$c - 2];
+				if ($left->type == $op)
+				{
+					$right = array_pop($operands);
+					$left->addNode($right);
+					return $left;
+				}
+			}
+			$arity = 2;
+		}
+
+		// Always use push to add operands to n, to update start and end
+		$a = array_splice($operands, $c - $arity);
+		for ($i = 0; $i < $arity; $i++)
+			$n->addNode($a[$i]);
+
+		// Include closing bracket or postfix operator in [start,end]
+		$te = $this->t->currentToken()->end;
+		if ($n->end < $te)
+			$n->end = $te;
+
+		array_push($operands, $n);
+
+		return $n;
+	}
+}
+
+class JSCompilerContext
+{
+	public $inFunction = false;
+	public $inForLoopInit = false;
+	public $ecmaStrictMode = false;
+	public $bracketLevel = 0;
+	public $curlyLevel = 0;
+	public $parenLevel = 0;
+	public $hookLevel = 0;
+
+	public $stmtStack = array();
+	public $funDecls = array();
+	public $varDecls = array();
+
+	public function __construct($inFunction)
+	{
+		$this->inFunction = $inFunction;
+	}
+}
+
+class JSNode
+{
+	private $type;
+	private $value;
+	private $lineno;
+	private $start;
+	private $end;
+
+	public $treeNodes = array();
+	public $funDecls = array();
+	public $varDecls = array();
+
+	public function __construct($t, $type=0)
+	{
+		if ($token = $t->currentToken())
+		{
+			$this->type = $type ? $type : $token->type;
+			$this->value = $token->value;
+			$this->lineno = $token->lineno;
+			$this->start = $token->start;
+			$this->end = $token->end;
+		}
+		else
+		{
+			$this->type = $type;
+			$this->lineno = $t->lineno;
+		}
+
+		if (($numargs = func_num_args()) > 2)
+		{
+			$args = func_get_args();;
+			for ($i = 2; $i < $numargs; $i++)
+				$this->addNode($args[$i]);
+		}
+	}
+
+	// we don't want to bloat our object with all kind of specific properties, so we use overloading
+	public function __set($name, $value)
+	{
+		$this->$name = $value;
+	}
+
+	public function __get($name)
+	{
+		if (isset($this->$name))
+			return $this->$name;
+
+		return null;
+	}
+
+	public function addNode($node)
+	{
+		$this->treeNodes[] = $node;
+	}
+}
+
+class JSTokenizer
+{
+	private $cursor = 0;
+	private $source;
+
+	public $tokens = array();
+	public $tokenIndex = 0;
+	public $lookahead = 0;
+	public $scanNewlines = false;
+	public $scanOperand = true;
+
+	public $filename;
+	public $lineno;
+
+	private $keywords = array(
+		'break',
+		'case', 'catch', 'const', 'continue',
+		'debugger', 'default', 'delete', 'do',
+		'else', 'enum',
+		'false', 'finally', 'for', 'function',
+		'if', 'in', 'instanceof',
+		'new', 'null',
+		'return',
+		'switch',
+		'this', 'throw', 'true', 'try', 'typeof',
+		'var', 'void',
+		'while', 'with'
+	);
+
+	private $opTypeNames = array(
+		';'	=> 'SEMICOLON',
+		','	=> 'COMMA',
+		'?'	=> 'HOOK',
+		':'	=> 'COLON',
+		'||'	=> 'OR',
+		'&&'	=> 'AND',
+		'|'	=> 'BITWISE_OR',
+		'^'	=> 'BITWISE_XOR',
+		'&'	=> 'BITWISE_AND',
+		'==='	=> 'STRICT_EQ',
+		'=='	=> 'EQ',
+		'='	=> 'ASSIGN',
+		'!=='	=> 'STRICT_NE',
+		'!='	=> 'NE',
+		'<<'	=> 'LSH',
+		'<='	=> 'LE',
+		'<'	=> 'LT',
+		'>>>'	=> 'URSH',
+		'>>'	=> 'RSH',
+		'>='	=> 'GE',
+		'>'	=> 'GT',
+		'++'	=> 'INCREMENT',
+		'--'	=> 'DECREMENT',
+		'+'	=> 'PLUS',
+		'-'	=> 'MINUS',
+		'*'	=> 'MUL',
+		'/'	=> 'DIV',
+		'%'	=> 'MOD',
+		'!'	=> 'NOT',
+		'~'	=> 'BITWISE_NOT',
+		'.'	=> 'DOT',
+		'['	=> 'LEFT_BRACKET',
+		']'	=> 'RIGHT_BRACKET',
+		'{'	=> 'LEFT_CURLY',
+		'}'	=> 'RIGHT_CURLY',
+		'('	=> 'LEFT_PAREN',
+		')'	=> 'RIGHT_PAREN',
+		'@*/'	=> 'CONDCOMMENT_END'
+	);
+
+	private $assignOps = array('|', '^', '&', '<<', '>>', '>>>', '+', '-', '*', '/', '%');
+	private $opRegExp;
+
+	public function __construct()
+	{
+		$this->opRegExp = '#^(' . implode('|', array_map('preg_quote', array_keys($this->opTypeNames))) . ')#';
+
+		// this is quite a hidden yet convenient place to create the defines for operators and keywords
+		foreach ($this->opTypeNames as $operand => $name)
+			define('OP_' . $name, $operand);
+
+		define('OP_UNARY_PLUS', 'U+');
+		define('OP_UNARY_MINUS', 'U-');
+
+		foreach ($this->keywords as $keyword)
+			define('KEYWORD_' . strtoupper($keyword), $keyword);
+	}
+
+	public function init($source, $filename = '', $lineno = 1)
+	{
+		$this->source = $source;
+		$this->filename = $filename ? $filename : '[inline]';
+		$this->lineno = $lineno;
+
+		$this->cursor = 0;
+		$this->tokens = array();
+		$this->tokenIndex = 0;
+		$this->lookahead = 0;
+		$this->scanNewlines = false;
+		$this->scanOperand = true;
+	}
+
+	public function getInput($chunksize)
+	{
+		if ($chunksize)
+			return substr($this->source, $this->cursor, $chunksize);
+
+		return substr($this->source, $this->cursor);
+	}
+
+	public function isDone()
+	{
+		return $this->peek() == TOKEN_END;
+	}
+
+	public function match($tt)
+	{
+		return $this->get() == $tt || $this->unget();
+	}
+
+	public function mustMatch($tt)
+	{
+	        if (!$this->match($tt))
+			throw $this->newSyntaxError('Unexpected token; token ' . $tt . ' expected');
+
+		return $this->currentToken();
+	}
+
+	public function peek()
+	{
+		if ($this->lookahead)
+		{
+			$next = $this->tokens[($this->tokenIndex + $this->lookahead) & 3];
+			if ($this->scanNewlines && $next->lineno != $this->lineno)
+				$tt = TOKEN_NEWLINE;
+			else
+				$tt = $next->type;
+		}
+		else
+		{
+			$tt = $this->get();
+			$this->unget();
+		}
+
+		return $tt;
+	}
+
+	public function peekOnSameLine()
+	{
+		$this->scanNewlines = true;
+		$tt = $this->peek();
+		$this->scanNewlines = false;
+
+		return $tt;
+	}
+
+	public function currentToken()
+	{
+		if (!empty($this->tokens))
+			return $this->tokens[$this->tokenIndex];
+	}
+
+	public function get($chunksize = 1000)
+	{
+		while($this->lookahead)
+		{
+			$this->lookahead--;
+			$this->tokenIndex = ($this->tokenIndex + 1) & 3;
+			$token = $this->tokens[$this->tokenIndex];
+			if ($token->type != TOKEN_NEWLINE || $this->scanNewlines)
+				return $token->type;
+		}
+
+		$conditional_comment = false;
+
+		// strip whitespace and comments
+		while(true)
+		{
+			$input = $this->getInput($chunksize);
+
+			// whitespace handling; gobble up \r as well (effectively we don't have support for MAC newlines!)
+			$re = $this->scanNewlines ? '/^[ \r\t]+/' : '/^\s+/';
+			if (preg_match($re, $input, $match))
+			{
+				$spaces = $match[0];
+				$spacelen = strlen($spaces);
+				$this->cursor += $spacelen;
+				if (!$this->scanNewlines)
+					$this->lineno += substr_count($spaces, "\n");
+
+				if ($spacelen == $chunksize)
+					continue; // complete chunk contained whitespace
+
+				$input = $this->getInput($chunksize);
+				if ($input == '' || $input[0] != '/')
+					break;
+			}
+
+			// Comments
+			if (!preg_match('/^\/(?:\*(@(?:cc_on|if|elif|else|end))?(?:.|\n)*?\*\/|\/.*)/', $input, $match))
+			{
+				if (!$chunksize)
+					break;
+
+				// retry with a full chunk fetch; this also prevents breakage of long regular expressions (which will never match a comment)
+				$chunksize = null;
+				continue;
+			}
+
+			// check if this is a conditional (JScript) comment
+			if (!empty($match[1]))
+			{
+				//$match[0] = '/*' . $match[1];
+				$conditional_comment = true;
+				break;
+			}
+			else
+			{
+				$this->cursor += strlen($match[0]);
+				$this->lineno += substr_count($match[0], "\n");
+			}
+		}
+
+		if ($input == '')
+		{
+			$tt = TOKEN_END;
+			$match = array('');
+		}
+		elseif ($conditional_comment)
+		{
+			$tt = TOKEN_CONDCOMMENT_MULTILINE;
+		}
+		else
+		{
+			switch ($input[0])
+			{
+				case '0': case '1': case '2': case '3': case '4':
+				case '5': case '6': case '7': case '8': case '9':
+					if (preg_match('/^\d+\.\d*(?:[eE][-+]?\d+)?|^\d+(?:\.\d*)?[eE][-+]?\d+/', $input, $match))
+					{
+						$tt = TOKEN_NUMBER;
+					}
+					elseif (preg_match('/^0[xX][\da-fA-F]+|^0[0-7]*|^\d+/', $input, $match))
+					{
+						// this should always match because of \d+
+						$tt = TOKEN_NUMBER;
+					}
+				break;
+
+				case '"':
+				case "'":
+					if (preg_match('/^"(?:\\\\(?:.|\r?\n)|[^\\\\"\r\n])*"|^\'(?:\\\\(?:.|\r?\n)|[^\\\\\'\r\n])*\'/', $input, $match))
+					{
+						$tt = TOKEN_STRING;
+					}
+					else
+					{
+						if ($chunksize)
+							return $this->get(null); // retry with a full chunk fetch
+
+						throw $this->newSyntaxError('Unterminated string literal');
+					}
+				break;
+
+				case '/':
+					if ($this->scanOperand && preg_match('/^\/((?:\\\\.|\[(?:\\\\.|[^\]])*\]|[^\/])+)\/([gimy]*)/', $input, $match))
+					{
+						$tt = TOKEN_REGEXP;
+						break;
+					}
+				// fall through
+
+				case '|':
+				case '^':
+				case '&':
+				case '<':
+				case '>':
+				case '+':
+				case '-':
+				case '*':
+				case '%':
+				case '=':
+				case '!':
+					// should always match
+					preg_match($this->opRegExp, $input, $match);
+					$op = $match[0];
+					if (in_array($op, $this->assignOps) && $input[strlen($op)] == '=')
+					{
+						$tt = OP_ASSIGN;
+						$match[0] .= '=';
+					}
+					else
+					{
+						$tt = $op;
+						if ($this->scanOperand)
+						{
+							if ($op == OP_PLUS)
+								$tt = OP_UNARY_PLUS;
+							elseif ($op == OP_MINUS)
+								$tt = OP_UNARY_MINUS;
+						}
+						$op = null;
+					}
+				break;
+
+				case '.':
+					if (preg_match('/^\.\d+(?:[eE][-+]?\d+)?/', $input, $match))
+					{
+						$tt = TOKEN_NUMBER;
+						break;
+					}
+				// fall through
+
+				case ';':
+				case ',':
+				case '?':
+				case ':':
+				case '~':
+				case '[':
+				case ']':
+				case '{':
+				case '}':
+				case '(':
+				case ')':
+					// these are all single
+					$match = array($input[0]);
+					$tt = $input[0];
+				break;
+
+				case '@':
+					throw $this->newSyntaxError('Illegal token');
+				break;
+
+				case "\n":
+					if ($this->scanNewlines)
+					{
+						$match = array("\n");
+						$tt = TOKEN_NEWLINE;
+					}
+					else
+						throw $this->newSyntaxError('Illegal token');
+				break;
+
+				default:
+					// FIXME: add support for unicode and unicode escape sequence \uHHHH
+					if (preg_match('/^[$\w]+/', $input, $match))
+					{
+						$tt = in_array($match[0], $this->keywords) ? $match[0] : TOKEN_IDENTIFIER;
+					}
+					else
+						throw $this->newSyntaxError('Illegal token');
+			}
+		}
+
+		$this->tokenIndex = ($this->tokenIndex + 1) & 3;
+
+		if (!isset($this->tokens[$this->tokenIndex]))
+			$this->tokens[$this->tokenIndex] = new JSToken();
+
+		$token = $this->tokens[$this->tokenIndex];
+		$token->type = $tt;
+
+		if ($tt == OP_ASSIGN)
+			$token->assignOp = $op;
+
+		$token->start = $this->cursor;
+
+		$token->value = $match[0];
+		$this->cursor += strlen($match[0]);
+
+		$token->end = $this->cursor;
+		$token->lineno = $this->lineno;
+
+		return $tt;
+	}
+
+	public function unget()
+	{
+		if (++$this->lookahead == 4)
+			throw $this->newSyntaxError('PANIC: too much lookahead!');
+
+		$this->tokenIndex = ($this->tokenIndex - 1) & 3;
+	}
+
+	public function newSyntaxError($m)
+	{
+		return new Exception('Parse error: ' . $m . ' in file \'' . $this->filename . '\' on line ' . $this->lineno);
+	}
+}
+
+class JSToken
+{
+	public $type;
+	public $value;
+	public $start;
+	public $end;
+	public $lineno;
+	public $assignOp;
+}
+
+?>
Index: moodle/lib/minify/lib/Minify.php
--- moodle/lib/minify/lib/Minify.php No Base Revision
+++ moodle/lib/minify/lib/Minify.php Locally New
@@ -0,0 +1,532 @@
+<?php
+/**
+ * Class Minify  
+ * @package Minify
+ */
+
+/**
+ * Minify_Source
+ */
+require_once 'Minify/Source.php';
+ 
+/**
+ * Minify - Combines, minifies, and caches JavaScript and CSS files on demand.
+ *
+ * See README for usage instructions (for now).
+ *
+ * This library was inspired by {@link mailto:flashkot@mail.ru jscsscomp by Maxim Martynyuk}
+ * and by the article {@link http://www.hunlock.com/blogs/Supercharged_Javascript "Supercharged JavaScript" by Patrick Hunlock}.
+ *
+ * Requires PHP 5.1.0.
+ * Tested on PHP 5.1.6.
+ *
+ * @package Minify
+ * @author Ryan Grove <ryan@wonko.com>
+ * @author Stephen Clay <steve@mrclay.org>
+ * @copyright 2008 Ryan Grove, Stephen Clay. All rights reserved.
+ * @license http://opensource.org/licenses/bsd-license.php  New BSD License
+ * @link http://code.google.com/p/minify/
+ */
+class Minify {
+    
+    const VERSION = '2.1.3';
+    const TYPE_CSS = 'text/css';
+    const TYPE_HTML = 'text/html';
+    // there is some debate over the ideal JS Content-Type, but this is the
+    // Apache default and what Yahoo! uses..
+    const TYPE_JS = 'application/x-javascript';
+    
+    /**
+     * How many hours behind are the file modification times of uploaded files?
+     * 
+     * If you upload files from Windows to a non-Windows server, Windows may report
+     * incorrect mtimes for the files. Immediately after modifying and uploading a 
+     * file, use the touch command to update the mtime on the server. If the mtime 
+     * jumps ahead by a number of hours, set this variable to that number. If the mtime 
+     * moves back, this should not be needed.
+     *
+     * @var int $uploaderHoursBehind
+     */
+    public static $uploaderHoursBehind = 0;
+    
+    /**
+     * If this string is not empty AND the serve() option 'bubbleCssImports' is
+     * NOT set, then serve() will check CSS files for @import declarations that
+     * appear too late in the combined stylesheet. If found, serve() will prepend
+     * the output with this warning.
+     *
+     * @var string $importWarning
+     */
+    public static $importWarning = "/* See http://code.google.com/p/minify/wiki/CommonProblems#@imports_can_appear_in_invalid_locations_in_combined_CSS_files */\n";
+    
+    /**
+     * Specify a cache object (with identical interface as Minify_Cache_File) or
+     * a path to use with Minify_Cache_File.
+     * 
+     * If not called, Minify will not use a cache and, for each 200 response, will 
+     * need to recombine files, minify and encode the output.
+     *
+     * @param mixed $cache object with identical interface as Minify_Cache_File or
+     * a directory path, or null to disable caching. (default = '')
+     * 
+     * @param bool $fileLocking (default = true) This only applies if the first
+     * parameter is a string.
+     *
+     * @return null
+     */
+    public static function setCache($cache = '', $fileLocking = true)
+    {
+        if (is_string($cache)) {
+            require_once 'Minify/Cache/File.php';
+            self::$_cache = new Minify_Cache_File($cache, $fileLocking);
+        } else {
+            self::$_cache = $cache;
+        }
+    }
+    
+    /**
+     * Serve a request for a minified file. 
+     * 
+     * Here are the available options and defaults in the base controller:
+     * 
+     * 'isPublic' : send "public" instead of "private" in Cache-Control 
+     * headers, allowing shared caches to cache the output. (default true)
+     * 
+     * 'quiet' : set to true to have serve() return an array rather than sending
+     * any headers/output (default false)
+     * 
+     * 'encodeOutput' : set to false to disable content encoding, and not send
+     * the Vary header (default true)
+     * 
+     * 'encodeMethod' : generally you should let this be determined by 
+     * HTTP_Encoder (leave null), but you can force a particular encoding
+     * to be returned, by setting this to 'gzip' or '' (no encoding)
+     * 
+     * 'encodeLevel' : level of encoding compression (0 to 9, default 9)
+     * 
+     * 'contentTypeCharset' : appended to the Content-Type header sent. Set to a falsey
+     * value to remove. (default 'utf-8')  
+     * 
+     * 'maxAge' : set this to the number of seconds the client should use its cache
+     * before revalidating with the server. This sets Cache-Control: max-age and the
+     * Expires header. Unlike the old 'setExpires' setting, this setting will NOT
+     * prevent conditional GETs. Note this has nothing to do with server-side caching.
+     * 
+     * 'rewriteCssUris' : If true, serve() will automatically set the 'currentDir'
+     * minifier option to enable URI rewriting in CSS files (default true)
+     * 
+     * 'bubbleCssImports' : If true, all @import declarations in combined CSS
+     * files will be move to the top. Note this may alter effective CSS values
+     * due to a change in order. (default false)
+     * 
+     * 'debug' : set to true to minify all sources with the 'Lines' controller, which
+     * eases the debugging of combined files. This also prevents 304 responses.
+     * @see Minify_Lines::minify()
+     * 
+     * 'minifiers' : to override Minify's default choice of minifier function for 
+     * a particular content-type, specify your callback under the key of the 
+     * content-type:
+     * <code>
+     * // call customCssMinifier($css) for all CSS minification
+     * $options['minifiers'][Minify::TYPE_CSS] = 'customCssMinifier';
+     * 
+     * // don't minify Javascript at all
+     * $options['minifiers'][Minify::TYPE_JS] = '';
+     * </code>
+     * 
+     * 'minifierOptions' : to send options to the minifier function, specify your options
+     * under the key of the content-type. E.g. To send the CSS minifier an option: 
+     * <code>
+     * // give CSS minifier array('optionName' => 'optionValue') as 2nd argument 
+     * $options['minifierOptions'][Minify::TYPE_CSS]['optionName'] = 'optionValue';
+     * </code>
+     * 
+     * 'contentType' : (optional) this is only needed if your file extension is not 
+     * js/css/html. The given content-type will be sent regardless of source file
+     * extension, so this should not be used in a Groups config with other
+     * Javascript/CSS files.
+     * 
+     * Any controller options are documented in that controller's setupSources() method.
+     * 
+     * @param mixed instance of subclass of Minify_Controller_Base or string name of
+     * controller. E.g. 'Files'
+     * 
+     * @param array $options controller/serve options
+     * 
+     * @return mixed null, or, if the 'quiet' option is set to true, an array
+     * with keys "success" (bool), "statusCode" (int), "content" (string), and
+     * "headers" (array).
+     */
+    public static function serve($controller, $options = array())
+    {
+        if (is_string($controller)) {
+            // make $controller into object
+            $class = 'Minify_Controller_' . $controller;
+            if (! class_exists($class, false)) {
+                require_once "Minify/Controller/" 
+                    . str_replace('_', '/', $controller) . ".php";    
+            }
+            $controller = new $class();
+        }
+        
+        // set up controller sources and mix remaining options with
+        // controller defaults
+        $options = $controller->setupSources($options);
+        $options = $controller->analyzeSources($options);
+        self::$_options = $controller->mixInDefaultOptions($options);
+        
+        // check request validity
+        if (! $controller->sources) {
+            // invalid request!
+            if (! self::$_options['quiet']) {
+                header(self::$_options['badRequestHeader']);
+                echo self::$_options['badRequestHeader'];
+                return;
+            } else {
+                list(,$statusCode) = explode(' ', self::$_options['badRequestHeader']);
+                return array(
+                    'success' => false
+                    ,'statusCode' => (int)$statusCode
+                    ,'content' => ''
+                    ,'headers' => array()
+                );
+            }
+        }
+        
+        self::$_controller = $controller;
+        
+        if (self::$_options['debug']) {
+            self::_setupDebug($controller->sources);
+            self::$_options['maxAge'] = 0;
+        }
+        
+        // determine encoding
+        if (self::$_options['encodeOutput']) {
+            if (self::$_options['encodeMethod'] !== null) {
+                // controller specifically requested this
+                $contentEncoding = self::$_options['encodeMethod'];
+            } else {
+                // sniff request header
+                require_once 'HTTP/Encoder.php';
+                // depending on what the client accepts, $contentEncoding may be 
+                // 'x-gzip' while our internal encodeMethod is 'gzip'. Calling
+                // getAcceptedEncoding(false, false) leaves out compress and deflate as options.
+                list(self::$_options['encodeMethod'], $contentEncoding) = HTTP_Encoder::getAcceptedEncoding(false, false);
+            }
+        } else {
+            self::$_options['encodeMethod'] = ''; // identity (no encoding)
+        }
+        
+        // check client cache
+        require_once 'HTTP/ConditionalGet.php';
+        $cgOptions = array(
+            'lastModifiedTime' => self::$_options['lastModifiedTime']
+            ,'isPublic' => self::$_options['isPublic']
+            ,'encoding' => self::$_options['encodeMethod']
+        );
+        if (self::$_options['maxAge'] > 0) {
+            $cgOptions['maxAge'] = self::$_options['maxAge'];
+        }
+        $cg = new HTTP_ConditionalGet($cgOptions);
+        if ($cg->cacheIsValid) {
+            // client's cache is valid
+            if (! self::$_options['quiet']) {
+                $cg->sendHeaders();
+                return;
+            } else {
+                return array(
+                    'success' => true
+                    ,'statusCode' => 304
+                    ,'content' => ''
+                    ,'headers' => $cg->getHeaders()
+                );
+            }
+        } else {
+            // client will need output
+            $headers = $cg->getHeaders();
+            unset($cg);
+        }
+        
+        if (self::$_options['contentType'] === self::TYPE_CSS
+            && self::$_options['rewriteCssUris']) {
+            reset($controller->sources);
+            while (list($key, $source) = each($controller->sources)) {
+                if ($source->filepath 
+                    && !isset($source->minifyOptions['currentDir'])
+                    && !isset($source->minifyOptions['prependRelativePath'])
+                ) {
+                    $source->minifyOptions['currentDir'] = dirname($source->filepath);
+                }
+            }
+        }
+        
+        // check server cache
+        if (null !== self::$_cache) {
+            // using cache
+            // the goal is to use only the cache methods to sniff the length and 
+            // output the content, as they do not require ever loading the file into
+            // memory.
+            $cacheId = 'minify_' . self::_getCacheId();
+            $fullCacheId = (self::$_options['encodeMethod'])
+                ? $cacheId . '.gz'
+                : $cacheId;
+            // check cache for valid entry
+            $cacheIsReady = self::$_cache->isValid($fullCacheId, self::$_options['lastModifiedTime']); 
+            if ($cacheIsReady) {
+                $cacheContentLength = self::$_cache->getSize($fullCacheId);    
+            } else {
+                // generate & cache content
+                $content = self::_combineMinify();
+                self::$_cache->store($cacheId, $content);
+                if (function_exists('gzencode')) {
+                    self::$_cache->store($cacheId . '.gz', gzencode($content, self::$_options['encodeLevel']));
+                }
+            }
+        } else {
+            // no cache
+            $cacheIsReady = false;
+            $content = self::_combineMinify();
+        }
+        if (! $cacheIsReady && self::$_options['encodeMethod']) {
+            // still need to encode
+            $content = gzencode($content, self::$_options['encodeLevel']);
+        }
+        
+        // add headers
+        $headers['Content-Length'] = $cacheIsReady
+            ? $cacheContentLength
+            : strlen($content);
+        $headers['Content-Type'] = self::$_options['contentTypeCharset']
+            ? self::$_options['contentType'] . '; charset=' . self::$_options['contentTypeCharset']
+            : self::$_options['contentType'];
+        if (self::$_options['encodeMethod'] !== '') {
+            $headers['Content-Encoding'] = $contentEncoding;
+        }
+        if (self::$_options['encodeOutput']) {
+            $headers['Vary'] = 'Accept-Encoding';
+        }
+
+        if (! self::$_options['quiet']) {
+            // output headers & content
+            foreach ($headers as $name => $val) {
+                header($name . ': ' . $val);
+            }
+            if ($cacheIsReady) {
+                self::$_cache->display($fullCacheId);
+            } else {
+                echo $content;
+            }
+        } else {
+            return array(
+                'success' => true
+                ,'statusCode' => 200
+                ,'content' => $cacheIsReady
+                    ? self::$_cache->fetch($fullCacheId)
+                    : $content
+                ,'headers' => $headers
+            );
+        }
+    }
+    
+    /**
+     * Return combined minified content for a set of sources
+     *
+     * No internal caching will be used and the content will not be HTTP encoded.
+     * 
+     * @param array $sources array of filepaths and/or Minify_Source objects
+     * 
+     * @param array $options (optional) array of options for serve. By default
+     * these are already set: quiet = true, encodeMethod = '', lastModifiedTime = 0.
+     * 
+     * @return string
+     */
+    public static function combine($sources, $options = array())
+    {
+        $cache = self::$_cache;
+        self::$_cache = null;
+        $options = array_merge(array(
+            'files' => (array)$sources
+            ,'quiet' => true
+            ,'encodeMethod' => ''
+            ,'lastModifiedTime' => 0
+        ), $options);
+        $out = self::serve('Files', $options);
+        self::$_cache = $cache;
+        return $out['content'];
+    }
+    
+    /**
+     * On IIS, create $_SERVER['DOCUMENT_ROOT']
+     * 
+     * @param bool $unsetPathInfo (default false) if true, $_SERVER['PATH_INFO']
+     * will be unset (it is inconsistent with Apache's setting)
+     * 
+     * @return null
+     */
+    public static function setDocRoot($unsetPathInfo = false)
+    {
+        if (isset($_SERVER['SERVER_SOFTWARE'])
+            && 0 === strpos($_SERVER['SERVER_SOFTWARE'], 'Microsoft-IIS/')
+        ) {
+            $_SERVER['DOCUMENT_ROOT'] = rtrim(substr(
+                $_SERVER['PATH_TRANSLATED']
+                ,0
+                ,strlen($_SERVER['PATH_TRANSLATED']) - strlen($_SERVER['SCRIPT_NAME'])
+            ), '\\');
+            if ($unsetPathInfo) {
+                unset($_SERVER['PATH_INFO']);
+            }
+            require_once 'Minify/Logger.php';
+            Minify_Logger::log("setDocRoot() set DOCUMENT_ROOT to \"{$_SERVER['DOCUMENT_ROOT']}\"");
+        }
+    }
+    
+    /**
+     * @var mixed Minify_Cache_* object or null (i.e. no server cache is used)
+     */
+    private static $_cache = null;
+    
+    /**
+     * @var Minify_Controller active controller for current request
+     */
+    protected static $_controller = null;
+    
+    /**
+     * @var array options for current request
+     */
+    protected static $_options = null;
+    
+    /**
+     * Set up sources to use Minify_Lines
+     *
+     * @param array $sources Minify_Source instances
+     *
+     * @return null
+     */
+    protected static function _setupDebug($sources)
+    {
+        foreach ($sources as $source) {
+            $source->minifier = array('Minify_Lines', 'minify');
+            $id = $source->getId();
+            $source->minifyOptions = array(
+                'id' => (is_file($id) ? basename($id) : $id)
+            );
+        }
+    }
+    
+    /**
+     * Combines sources and minifies the result.
+     *
+     * @return string
+     */
+    protected static function _combineMinify()
+    {
+        $type = self::$_options['contentType']; // ease readability
+        
+        // when combining scripts, make sure all statements separated and
+        // trailing single line comment is terminated
+        $implodeSeparator = ($type === self::TYPE_JS)
+            ? "\n;"
+            : '';
+        // allow the user to pass a particular array of options to each
+        // minifier (designated by type). source objects may still override
+        // these
+        $defaultOptions = isset(self::$_options['minifierOptions'][$type])
+            ? self::$_options['minifierOptions'][$type]
+            : array();
+        // if minifier not set, default is no minification. source objects
+        // may still override this
+        $defaultMinifier = isset(self::$_options['minifiers'][$type])
+            ? self::$_options['minifiers'][$type]
+            : false;
+       
+        if (Minify_Source::haveNoMinifyPrefs(self::$_controller->sources)) {
+            // all source have same options/minifier, better performance
+            // to combine, then minify once
+            foreach (self::$_controller->sources as $source) {
+                $pieces[] = $source->getContent();
+            }
+            $content = implode($implodeSeparator, $pieces);
+            if ($defaultMinifier) {
+                self::$_controller->loadMinifier($defaultMinifier);
+                $content = call_user_func($defaultMinifier, $content, $defaultOptions);    
+            }
+        } else {
+            // minify each source with its own options and minifier, then combine
+            foreach (self::$_controller->sources as $source) {
+                // allow the source to override our minifier and options
+                $minifier = (null !== $source->minifier)
+                    ? $source->minifier
+                    : $defaultMinifier;
+                $options = (null !== $source->minifyOptions)
+                    ? array_merge($defaultOptions, $source->minifyOptions)
+                    : $defaultOptions;
+                if ($minifier) {
+                    self::$_controller->loadMinifier($minifier);
+                    // get source content and minify it
+                    $pieces[] = call_user_func($minifier, $source->getContent(), $options);     
+                } else {
+                    $pieces[] = $source->getContent();     
+                }
+            }
+            $content = implode($implodeSeparator, $pieces);
+        }
+        
+        if ($type === self::TYPE_CSS && false !== strpos($content, '@import')) {
+            $content = self::_handleCssImports($content);
+        }
+        
+        // do any post-processing (esp. for editing build URIs)
+        if (self::$_options['postprocessorRequire']) {
+            require_once self::$_options['postprocessorRequire'];
+        }
+        if (self::$_options['postprocessor']) {
+            $content = call_user_func(self::$_options['postprocessor'], $content, $type);
+        }
+        return $content;
+    }
+    
+    /**
+     * Make a unique cache id for for this request.
+     * 
+     * Any settings that could affect output are taken into consideration  
+     *
+     * @return string
+     */
+    protected static function _getCacheId()
+    {
+        return md5(serialize(array(
+            Minify_Source::getDigest(self::$_controller->sources)
+            ,self::$_options['minifiers'] 
+            ,self::$_options['minifierOptions']
+            ,self::$_options['postprocessor']
+            ,self::$_options['bubbleCssImports']
+        )));
+    }
+    
+    /**
+     * Bubble CSS @imports to the top or prepend a warning if an
+     * @import is detected not at the top.
+     */
+    protected static function _handleCssImports($css)
+    {
+        if (self::$_options['bubbleCssImports']) {
+            // bubble CSS imports
+            preg_match_all('/@import.*?;/', $css, $imports);
+            $css = implode('', $imports[0]) . preg_replace('/@import.*?;/', '', $css);
+        } else if ('' !== self::$importWarning) {
+            // remove comments so we don't mistake { in a comment as a block
+            $noCommentCss = preg_replace('@/\\*[\\s\\S]*?\\*/@', '', $css);
+            $lastImportPos = strrpos($noCommentCss, '@import');
+            $firstBlockPos = strpos($noCommentCss, '{');
+            if (false !== $lastImportPos
+                && false !== $firstBlockPos
+                && $firstBlockPos < $lastImportPos
+            ) {
+                // { appears before @import : prepend warning
+                $css = self::$importWarning . $css;
+            }
+        }
+        return $css;
+    }
+}
Index: moodle/lib/minify/lib/Minify/Build.php
--- moodle/lib/minify/lib/Minify/Build.php No Base Revision
+++ moodle/lib/minify/lib/Minify/Build.php Locally New
@@ -0,0 +1,103 @@
+<?php
+/**
+ * Class Minify_Build  
+ * @package Minify
+ */
+
+require_once 'Minify/Source.php';
+
+/**
+ * Maintain a single last modification time for a group of Minify sources to
+ * allow use of far off Expires headers in Minify.
+ * 
+ * <code>
+ * // in config file
+ * $groupSources = array(
+ *   'js' => array('file1.js', 'file2.js')
+ *   ,'css' => array('file1.css', 'file2.css', 'file3.css')
+ * )
+ * 
+ * // during HTML generation
+ * $jsBuild = new Minify_Build($groupSources['js']);
+ * $cssBuild = new Minify_Build($groupSources['css']);
+ * 
+ * $script = "<script type='text/javascript' src='"
+ *     . $jsBuild->uri('/min.php/js') . "'></script>";
+ * $link = "<link rel='stylesheet' type='text/css' href='"
+ *     . $cssBuild->uri('/min.php/css') . "'>";
+ * 
+ * // in min.php
+ * Minify::serve('Groups', array(
+ *   'groups' => $groupSources
+ *   ,'setExpires' => (time() + 86400 * 365)
+ * ));
+ * </code>
+ * 
+ * @package Minify
+ * @author Stephen Clay <steve@mrclay.org>
+ */
+class Minify_Build {
+    
+    /**
+     * Last modification time of all files in the build
+     * 
+     * @var int 
+     */
+    public $lastModified = 0;
+    
+    /**
+     * String to use as ampersand in uri(). Set this to '&' if
+     * you are not HTML-escaping URIs.
+     *
+     * @var string
+     */
+    public static $ampersand = '&amp;';
+    
+    /**
+     * Get a time-stamped URI
+     * 
+     * <code>
+     * echo $b->uri('/site.js');
+     * // outputs "/site.js?1678242"
+     * 
+     * echo $b->uri('/scriptaculous.js?load=effects');
+     * // outputs "/scriptaculous.js?load=effects&amp1678242"
+     * </code>
+     *
+     * @param string $uri
+     * @param boolean $forceAmpersand (default = false) Force the use of ampersand to 
+     * append the timestamp to the URI.
+     * @return string
+     */
+    public function uri($uri, $forceAmpersand = false) {
+        $sep = ($forceAmpersand || strpos($uri, '?') !== false)
+            ? self::$ampersand
+            : '?';
+        return "{$uri}{$sep}{$this->lastModified}";
+    }
+
+	/**
+     * Create a build object
+     * 
+     * @param array $sources array of Minify_Source objects and/or file paths
+     * 
+     * @return null
+     */
+    public function __construct($sources) 
+    {
+        $max = 0;
+        foreach ((array)$sources as $source) {
+            if ($source instanceof Minify_Source) {
+                $max = max($max, $source->lastModified);
+            } elseif (is_string($source)) {
+                if (0 === strpos($source, '//')) {
+                    $source = $_SERVER['DOCUMENT_ROOT'] . substr($source, 1);
+                }
+                if (is_file($source)) {
+                    $max = max($max, filemtime($source));
+                }
+            }
+        }
+        $this->lastModified = $max;
+    }
+}
Index: moodle/lib/minify/lib/Minify/CSS.php
--- moodle/lib/minify/lib/Minify/CSS.php No Base Revision
+++ moodle/lib/minify/lib/Minify/CSS.php Locally New
@@ -0,0 +1,83 @@
+<?php
+/**
+ * Class Minify_CSS  
+ * @package Minify
+ */
+
+/**
+ * Minify CSS
+ *
+ * This class uses Minify_CSS_Compressor and Minify_CSS_UriRewriter to 
+ * minify CSS and rewrite relative URIs.
+ * 
+ * @package Minify
+ * @author Stephen Clay <steve@mrclay.org>
+ * @author http://code.google.com/u/1stvamp/ (Issue 64 patch)
+ */
+class Minify_CSS {
+    
+    /**
+     * Minify a CSS string
+     * 
+     * @param string $css
+     * 
+     * @param array $options available options:
+     * 
+     * 'preserveComments': (default true) multi-line comments that begin
+     * with "/*!" will be preserved with newlines before and after to
+     * enhance readability.
+     * 
+     * 'prependRelativePath': (default null) if given, this string will be
+     * prepended to all relative URIs in import/url declarations
+     * 
+     * 'currentDir': (default null) if given, this is assumed to be the
+     * directory of the current CSS file. Using this, minify will rewrite
+     * all relative URIs in import/url declarations to correctly point to
+     * the desired files. For this to work, the files *must* exist and be
+     * visible by the PHP process.
+     *
+     * 'symlinks': (default = array()) If the CSS file is stored in 
+     * a symlink-ed directory, provide an array of link paths to
+     * target paths, where the link paths are within the document root. Because 
+     * paths need to be normalized for this to work, use "//" to substitute 
+     * the doc root in the link paths (the array keys). E.g.:
+     * <code>
+     * array('//symlink' => '/real/target/path') // unix
+     * array('//static' => 'D:\\staticStorage')  // Windows
+     * </code>
+     * 
+     * @return string
+     */
+    public static function minify($css, $options = array()) 
+    {
+        require_once 'Minify/CSS/Compressor.php';
+        if (isset($options['preserveComments']) 
+            && !$options['preserveComments']) {
+            $css = Minify_CSS_Compressor::process($css, $options);
+        } else {
+            require_once 'Minify/CommentPreserver.php';
+            $css = Minify_CommentPreserver::process(
+                $css
+                ,array('Minify_CSS_Compressor', 'process')
+                ,array($options)
+            );
+        }
+        if (! isset($options['currentDir']) && ! isset($options['prependRelativePath'])) {
+            return $css;
+        }
+        require_once 'Minify/CSS/UriRewriter.php';
+        if (isset($options['currentDir'])) {
+            return Minify_CSS_UriRewriter::rewrite(
+                $css
+                ,$options['currentDir']
+                ,isset($options['docRoot']) ? $options['docRoot'] : $_SERVER['DOCUMENT_ROOT']
+                ,isset($options['symlinks']) ? $options['symlinks'] : array()
+            );  
+        } else {
+            return Minify_CSS_UriRewriter::prepend(
+                $css
+                ,$options['prependRelativePath']
+            );
+        }
+    }
+}
Index: moodle/lib/minify/lib/Minify/CSS/Compressor.php
--- moodle/lib/minify/lib/Minify/CSS/Compressor.php No Base Revision
+++ moodle/lib/minify/lib/Minify/CSS/Compressor.php Locally New
@@ -0,0 +1,250 @@
+<?php
+/**
+ * Class Minify_CSS_Compressor 
+ * @package Minify
+ */
+
+/**
+ * Compress CSS
+ *
+ * This is a heavy regex-based removal of whitespace, unnecessary
+ * comments and tokens, and some CSS value minimization, where practical.
+ * Many steps have been taken to avoid breaking comment-based hacks, 
+ * including the ie5/mac filter (and its inversion), but expect tricky
+ * hacks involving comment tokens in 'content' value strings to break
+ * minimization badly. A test suite is available.
+ * 
+ * @package Minify
+ * @author Stephen Clay <steve@mrclay.org>
+ * @author http://code.google.com/u/1stvamp/ (Issue 64 patch)
+ */
+class Minify_CSS_Compressor {
+
+    /**
+     * Minify a CSS string
+     * 
+     * @param string $css
+     * 
+     * @param array $options (currently ignored)
+     * 
+     * @return string
+     */
+    public static function process($css, $options = array())
+    {
+        $obj = new Minify_CSS_Compressor($options);
+        return $obj->_process($css);
+    }
+    
+    /**
+     * @var array options
+     */
+    protected $_options = null;
+    
+    /**
+     * @var bool Are we "in" a hack?
+     * 
+     * I.e. are some browsers targetted until the next comment?
+     */
+    protected $_inHack = false;
+    
+    
+    /**
+     * Constructor
+     * 
+     * @param array $options (currently ignored)
+     * 
+     * @return null
+     */
+    private function __construct($options) {
+        $this->_options = $options;
+    }
+    
+    /**
+     * Minify a CSS string
+     * 
+     * @param string $css
+     * 
+     * @return string
+     */
+    protected function _process($css)
+    {
+        $css = str_replace("\r\n", "\n", $css);
+        
+        // preserve empty comment after '>'
+        // http://www.webdevout.net/css-hacks#in_css-selectors
+        $css = preg_replace('@>/\\*\\s*\\*/@', '>/*keep*/', $css);
+        
+        // preserve empty comment between property and value
+        // http://css-discuss.incutio.com/?page=BoxModelHack
+        $css = preg_replace('@/\\*\\s*\\*/\\s*:@', '/*keep*/:', $css);
+        $css = preg_replace('@:\\s*/\\*\\s*\\*/@', ':/*keep*/', $css);
+        
+        // apply callback to all valid comments (and strip out surrounding ws
+        $css = preg_replace_callback('@\\s*/\\*([\\s\\S]*?)\\*/\\s*@'
+            ,array($this, '_commentCB'), $css);
+
+        // remove ws around { } and last semicolon in declaration block
+        $css = preg_replace('/\\s*{\\s*/', '{', $css);
+        $css = preg_replace('/;?\\s*}\\s*/', '}', $css);
+        
+        // remove ws surrounding semicolons
+        $css = preg_replace('/\\s*;\\s*/', ';', $css);
+        
+        // remove ws around urls
+        $css = preg_replace('/
+                url\\(      # url(
+                \\s*
+                ([^\\)]+?)  # 1 = the URL (really just a bunch of non right parenthesis)
+                \\s*
+                \\)         # )
+            /x', 'url($1)', $css);
+        
+        // remove ws between rules and colons
+        $css = preg_replace('/
+                \\s*
+                ([{;])              # 1 = beginning of block or rule separator 
+                \\s*
+                ([\\*_]?[\\w\\-]+)  # 2 = property (and maybe IE filter)
+                \\s*
+                :
+                \\s*
+                (\\b|[#\'"])        # 3 = first character of a value
+            /x', '$1$2:$3', $css);
+        
+        // remove ws in selectors
+        $css = preg_replace_callback('/
+                (?:              # non-capture
+                    \\s*
+                    [^~>+,\\s]+  # selector part
+                    \\s*
+                    [,>+~]       # combinators
+                )+
+                \\s*
+                [^~>+,\\s]+      # selector part
+                {                # open declaration block
+            /x'
+            ,array($this, '_selectorsCB'), $css);
+        
+        // minimize hex colors
+        $css = preg_replace('/([^=])#([a-f\\d])\\2([a-f\\d])\\3([a-f\\d])\\4([\\s;\\}])/i'
+            , '$1#$2$3$4$5', $css);
+        
+        // remove spaces between font families
+        $css = preg_replace_callback('/font-family:([^;}]+)([;}])/'
+            ,array($this, '_fontFamilyCB'), $css);
+        
+        $css = preg_replace('/@import\\s+url/', '@import url', $css);
+        
+        // replace any ws involving newlines with a single newline
+        $css = preg_replace('/[ \\t]*\\n+\\s*/', "\n", $css);
+        
+        // separate common descendent selectors w/ newlines (to limit line lengths)
+        $css = preg_replace('/([\\w#\\.\\*]+)\\s+([\\w#\\.\\*]+){/', "$1\n$2{", $css);
+        
+        // Use newline after 1st numeric value (to limit line lengths).
+        $css = preg_replace('/
+            ((?:padding|margin|border|outline):\\d+(?:px|em)?) # 1 = prop : 1st numeric value
+            \\s+
+            /x'
+            ,"$1\n", $css);
+        
+        // prevent triggering IE6 bug: http://www.crankygeek.com/ie6pebug/
+        $css = preg_replace('/:first-l(etter|ine)\\{/', ':first-l$1 {', $css);
+            
+        return trim($css);
+    }
+    
+    /**
+     * Replace what looks like a set of selectors  
+     *
+     * @param array $m regex matches
+     * 
+     * @return string
+     */
+    protected function _selectorsCB($m)
+    {
+        // remove ws around the combinators
+        return preg_replace('/\\s*([,>+~])\\s*/', '$1', $m[0]);
+    }
+    
+    /**
+     * Process a comment and return a replacement
+     * 
+     * @param array $m regex matches
+     * 
+     * @return string
+     */
+    protected function _commentCB($m)
+    {
+        $hasSurroundingWs = (trim($m[0]) !== $m[1]);
+        $m = $m[1]; 
+        // $m is the comment content w/o the surrounding tokens, 
+        // but the return value will replace the entire comment.
+        if ($m === 'keep') {
+            return '/**/';
+        }
+        if ($m === '" "') {
+            // component of http://tantek.com/CSS/Examples/midpass.html
+            return '/*" "*/';
+        }
+        if (preg_match('@";\\}\\s*\\}/\\*\\s+@', $m)) {
+            // component of http://tantek.com/CSS/Examples/midpass.html
+            return '/*";}}/* */';
+        }
+        if ($this->_inHack) {
+            // inversion: feeding only to one browser
+            if (preg_match('@
+                    ^/               # comment started like /*/
+                    \\s*
+                    (\\S[\\s\\S]+?)  # has at least some non-ws content
+                    \\s*
+                    /\\*             # ends like /*/ or /**/
+                @x', $m, $n)) {
+                // end hack mode after this comment, but preserve the hack and comment content
+                $this->_inHack = false;
+                return "/*/{$n[1]}/**/";
+            }
+        }
+        if (substr($m, -1) === '\\') { // comment ends like \*/
+            // begin hack mode and preserve hack
+            $this->_inHack = true;
+            return '/*\\*/';
+        }
+        if ($m !== '' && $m[0] === '/') { // comment looks like /*/ foo */
+            // begin hack mode and preserve hack
+            $this->_inHack = true;
+            return '/*/*/';
+        }
+        if ($this->_inHack) {
+            // a regular comment ends hack mode but should be preserved
+            $this->_inHack = false;
+            return '/**/';
+        }
+        // Issue 107: if there's any surrounding whitespace, it may be important, so 
+        // replace the comment with a single space
+        return $hasSurroundingWs // remove all other comments
+            ? ' '
+            : '';
+    }
+    
+    /**
+     * Process a font-family listing and return a replacement
+     * 
+     * @param array $m regex matches
+     * 
+     * @return string   
+     */
+    protected function _fontFamilyCB($m)
+    {
+        $m[1] = preg_replace('/
+                \\s*
+                (
+                    "[^"]+"      # 1 = family in double qutoes
+                    |\'[^\']+\'  # or 1 = family in single quotes
+                    |[\\w\\-]+   # or 1 = unquoted family
+                )
+                \\s*
+            /x', '$1', $m[1]);
+        return 'font-family:' . $m[1] . $m[2];
+    }
+}
Index: moodle/lib/minify/lib/Minify/CSS/UriRewriter.php
--- moodle/lib/minify/lib/Minify/CSS/UriRewriter.php No Base Revision
+++ moodle/lib/minify/lib/Minify/CSS/UriRewriter.php Locally New
@@ -0,0 +1,270 @@
+<?php
+/**
+ * Class Minify_CSS_UriRewriter  
+ * @package Minify
+ */
+
+/**
+ * Rewrite file-relative URIs as root-relative in CSS files
+ *
+ * @package Minify
+ * @author Stephen Clay <steve@mrclay.org>
+ */
+class Minify_CSS_UriRewriter {
+    
+    /**
+     * Defines which class to call as part of callbacks, change this
+     * if you extend Minify_CSS_UriRewriter
+     * @var string
+     */
+    protected static $className = 'Minify_CSS_UriRewriter';
+    
+    /**
+     * rewrite() and rewriteRelative() append debugging information here
+     * @var string
+     */
+    public static $debugText = '';
+    
+    /**
+     * Rewrite file relative URIs as root relative in CSS files
+     * 
+     * @param string $css
+     * 
+     * @param string $currentDir The directory of the current CSS file.
+     * 
+     * @param string $docRoot The document root of the web site in which 
+     * the CSS file resides (default = $_SERVER['DOCUMENT_ROOT']).
+     * 
+     * @param array $symlinks (default = array()) If the CSS file is stored in 
+     * a symlink-ed directory, provide an array of link paths to
+     * target paths, where the link paths are within the document root. Because 
+     * paths need to be normalized for this to work, use "//" to substitute 
+     * the doc root in the link paths (the array keys). E.g.:
+     * <code>
+     * array('//symlink' => '/real/target/path') // unix
+     * array('//static' => 'D:\\staticStorage')  // Windows
+     * </code>
+     * 
+     * @return string
+     */
+    public static function rewrite($css, $currentDir, $docRoot = null, $symlinks = array()) 
+    {
+        self::$_docRoot = self::_realpath(
+            $docRoot ? $docRoot : $_SERVER['DOCUMENT_ROOT']
+        );
+        self::$_currentDir = self::_realpath($currentDir);
+        self::$_symlinks = array();
+        
+        // normalize symlinks
+        foreach ($symlinks as $link => $target) {
+            $link = ($link === '//')
+                ? self::$_docRoot
+                : str_replace('//', self::$_docRoot . '/', $link);
+            $link = strtr($link, '/', DIRECTORY_SEPARATOR);
+            self::$_symlinks[$link] = self::_realpath($target);
+        }
+        
+        self::$debugText .= "docRoot    : " . self::$_docRoot . "\n"
+                          . "currentDir : " . self::$_currentDir . "\n";
+        if (self::$_symlinks) {
+            self::$debugText .= "symlinks : " . var_export(self::$_symlinks, 1) . "\n";
+        }
+        self::$debugText .= "\n";
+        
+        $css = self::_trimUrls($css);
+        
+        // rewrite
+        $css = preg_replace_callback('/@import\\s+([\'"])(.*?)[\'"]/'
+            ,array(self::$className, '_processUriCB'), $css);
+        $css = preg_replace_callback('/url\\(\\s*([^\\)\\s]+)\\s*\\)/'
+            ,array(self::$className, '_processUriCB'), $css);
+
+        return $css;
+    }
+    
+    /**
+     * Prepend a path to relative URIs in CSS files
+     * 
+     * @param string $css
+     * 
+     * @param string $path The path to prepend.
+     * 
+     * @return string
+     */
+    public static function prepend($css, $path)
+    {
+        self::$_prependPath = $path;
+        
+        $css = self::_trimUrls($css);
+        
+        // append
+        $css = preg_replace_callback('/@import\\s+([\'"])(.*?)[\'"]/'
+            ,array(self::$className, '_processUriCB'), $css);
+        $css = preg_replace_callback('/url\\(\\s*([^\\)\\s]+)\\s*\\)/'
+            ,array(self::$className, '_processUriCB'), $css);
+
+        self::$_prependPath = null;
+        return $css;
+    }
+    
+    
+    /**
+     * @var string directory of this stylesheet
+     */
+    private static $_currentDir = '';
+    
+    /**
+     * @var string DOC_ROOT
+     */
+    private static $_docRoot = '';
+    
+    /**
+     * @var array directory replacements to map symlink targets back to their
+     * source (within the document root) E.g. '/var/www/symlink' => '/var/realpath'
+     */
+    private static $_symlinks = array();
+    
+    /**
+     * @var string path to prepend
+     */
+    private static $_prependPath = null;
+    
+    private static function _trimUrls($css)
+    {
+        return preg_replace('/
+            url\\(      # url(
+            \\s*
+            ([^\\)]+?)  # 1 = URI (assuming does not contain ")")
+            \\s*
+            \\)         # )
+        /x', 'url($1)', $css);
+    }
+    
+    private static function _processUriCB($m)
+    {
+        // $m matched either '/@import\\s+([\'"])(.*?)[\'"]/' or '/url\\(\\s*([^\\)\\s]+)\\s*\\)/'
+        $isImport = ($m[0][0] === '@');
+        // determine URI and the quote character (if any)
+        if ($isImport) {
+            $quoteChar = $m[1];
+            $uri = $m[2];
+        } else {
+            // $m[1] is either quoted or not
+            $quoteChar = ($m[1][0] === "'" || $m[1][0] === '"')
+                ? $m[1][0]
+                : '';
+            $uri = ($quoteChar === '')
+                ? $m[1]
+                : substr($m[1], 1, strlen($m[1]) - 2);
+        }
+        // analyze URI
+        if ('/' !== $uri[0]                  // root-relative
+            && false === strpos($uri, '//')  // protocol (non-data)
+            && 0 !== strpos($uri, 'data:')   // data protocol
+        ) {
+            // URI is file-relative: rewrite depending on options
+            $uri = (self::$_prependPath !== null)
+                ? (self::$_prependPath . $uri)
+                : self::rewriteRelative($uri, self::$_currentDir, self::$_docRoot, self::$_symlinks);
+        }
+        return $isImport
+            ? "@import {$quoteChar}{$uri}{$quoteChar}"
+            : "url({$quoteChar}{$uri}{$quoteChar})";
+    }
+    
+    /**
+     * Rewrite a file relative URI as root relative
+     *
+     * <code>
+     * Minify_CSS_UriRewriter::rewriteRelative(
+     *       '../img/hello.gif'
+     *     , '/home/user/www/css'  // path of CSS file
+     *     , '/home/user/www'      // doc root
+     * );
+     * // returns '/img/hello.gif'
+     * 
+     * // example where static files are stored in a symlinked directory
+     * Minify_CSS_UriRewriter::rewriteRelative(
+     *       'hello.gif'
+     *     , '/var/staticFiles/theme'
+     *     , '/home/user/www'
+     *     , array('/home/user/www/static' => '/var/staticFiles')
+     * );
+     * // returns '/static/theme/hello.gif'
+     * </code>
+     * 
+     * @param string $uri file relative URI
+     * 
+     * @param string $realCurrentDir realpath of the current file's directory.
+     * 
+     * @param string $realDocRoot realpath of the site document root.
+     * 
+     * @param array $symlinks (default = array()) If the file is stored in 
+     * a symlink-ed directory, provide an array of link paths to
+     * real target paths, where the link paths "appear" to be within the document 
+     * root. E.g.:
+     * <code>
+     * array('/home/foo/www/not/real/path' => '/real/target/path') // unix
+     * array('C:\\htdocs\\not\\real' => 'D:\\real\\target\\path')  // Windows
+     * </code>
+     * 
+     * @return string
+     */
+    public static function rewriteRelative($uri, $realCurrentDir, $realDocRoot, $symlinks = array())
+    {
+        // prepend path with current dir separator (OS-independent)
+        $path = strtr($realCurrentDir, '/', DIRECTORY_SEPARATOR)  
+            . DIRECTORY_SEPARATOR . strtr($uri, '/', DIRECTORY_SEPARATOR);
+        
+        self::$debugText .= "file-relative URI  : {$uri}\n"
+                          . "path prepended     : {$path}\n";
+        
+        // "unresolve" a symlink back to doc root
+        foreach ($symlinks as $link => $target) {
+            if (0 === strpos($path, $target)) {
+                // replace $target with $link
+                $path = $link . substr($path, strlen($target));
+                
+                self::$debugText .= "symlink unresolved : {$path}\n";
+                
+                break;
+            }
+        }
+        // strip doc root
+        $path = substr($path, strlen($realDocRoot));
+        
+        self::$debugText .= "docroot stripped   : {$path}\n";
+        
+        // fix to root-relative URI
+
+        $uri = strtr($path, '/\\', '//');
+
+        // remove /./ and /../ where possible
+        $uri = str_replace('/./', '/', $uri);
+        // inspired by patch from Oleg Cherniy
+        do {
+            $uri = preg_replace('@/[^/]+/\\.\\./@', '/', $uri, 1, $changed);
+        } while ($changed);
+      
+        self::$debugText .= "traversals removed : {$uri}\n\n";
+        
+        return $uri;
+    }
+    
+    /**
+     * Get realpath with any trailing slash removed. If realpath() fails,
+     * just remove the trailing slash.
+     * 
+     * @param string $path
+     * 
+     * @return mixed path with no trailing slash
+     */
+    protected static function _realpath($path)
+    {
+        $realPath = realpath($path);
+        if ($realPath !== false) {
+            $path = $realPath;
+        }
+        return rtrim($path, '/\\');
+    }
+}
Index: moodle/lib/minify/lib/Minify/Cache/APC.php
--- moodle/lib/minify/lib/Minify/Cache/APC.php No Base Revision
+++ moodle/lib/minify/lib/Minify/Cache/APC.php Locally New
@@ -0,0 +1,130 @@
+<?php
+/**
+ * Class Minify_Cache_APC
+ * @package Minify
+ */
+
+/**
+ * APC-based cache class for Minify
+ * 
+ * <code>
+ * Minify::setCache(new Minify_Cache_APC());
+ * </code>
+ * 
+ * @package Minify
+ * @author Chris Edwards
+ **/
+class Minify_Cache_APC {
+
+    /**
+     * Create a Minify_Cache_APC object, to be passed to
+     * Minify::setCache().
+     *
+     *
+     * @param int $expire seconds until expiration (default = 0
+     * meaning the item will not get an expiration date)
+     *
+     * @return null
+     */
+    public function __construct($expire = 0)
+    {
+        $this->_exp = $expire;
+    }
+
+    /**
+     * Write data to cache.
+     *
+     * @param string $id cache id
+     *
+     * @param string $data
+     *
+     * @return bool success
+     */
+    public function store($id, $data)
+    {
+        return apc_store($id, "{$_SERVER['REQUEST_TIME']}|{$data}", $this->_exp);
+    }
+
+    /**
+     * Get the size of a cache entry
+     *
+     * @param string $id cache id
+     *
+     * @return int size in bytes
+     */
+    public function getSize($id)
+    {
+        return $this->_fetch($id)
+            ? strlen($this->_data)
+            : false;
+    }
+
+    /**
+     * Does a valid cache entry exist?
+     *
+     * @param string $id cache id
+     *
+     * @param int $srcMtime mtime of the original source file(s)
+     *
+     * @return bool exists
+     */
+    public function isValid($id, $srcMtime)
+    {
+        return ($this->_fetch($id) && ($this->_lm >= $srcMtime));
+    }
+
+    /**
+     * Send the cached content to output
+     *
+     * @param string $id cache id
+     */
+    public function display($id)
+    {
+        echo $this->_fetch($id)
+            ? $this->_data
+            : '';
+    }
+
+    /**
+     * Fetch the cached content
+     *
+     * @param string $id cache id
+     *
+     * @return string
+     */
+    public function fetch($id)
+    {
+        return $this->_fetch($id)
+            ? $this->_data
+            : '';
+    }
+
+    private $_exp = null;
+
+    // cache of most recently fetched id
+    private $_lm = null;
+    private $_data = null;
+    private $_id = null;
+
+    /**
+     * Fetch data and timestamp from apc, store in instance
+     *
+     * @param string $id
+     *
+     * @return bool success
+     */
+    private function _fetch($id)
+    {
+        if ($this->_id === $id) {
+            return true;
+        }
+        $ret = apc_fetch($id);
+        if (false === $ret) {
+            $this->_id = null;
+            return false;
+        }
+        list($this->_lm, $this->_data) = explode('|', $ret, 2);
+        $this->_id = $id;
+        return true;
+    }
+}
Index: moodle/lib/minify/lib/Minify/Cache/File.php
--- moodle/lib/minify/lib/Minify/Cache/File.php No Base Revision
+++ moodle/lib/minify/lib/Minify/Cache/File.php Locally New
@@ -0,0 +1,125 @@
+<?php
+/**
+ * Class Minify_Cache_File  
+ * @package Minify
+ */
+
+class Minify_Cache_File {
+    
+    public function __construct($path = '', $fileLocking = false)
+    {
+        if (! $path) {
+            require_once 'Solar/Dir.php';
+            $path = rtrim(Solar_Dir::tmp(), DIRECTORY_SEPARATOR);
+        }
+        $this->_locking = $fileLocking;
+        $this->_path = $path;
+    }
+    
+    /**
+     * Write data to cache.
+     *
+     * @param string $id cache id (e.g. a filename)
+     * 
+     * @param string $data
+     * 
+     * @return bool success
+     */
+    public function store($id, $data)
+    {
+        $flag = $this->_locking
+            ? LOCK_EX
+            : null;
+        if (is_file($this->_path . '/' . $id)) {
+            @unlink($this->_path . '/' . $id);
+        }
+        if (! @file_put_contents($this->_path . '/' . $id, $data, $flag)) {
+            return false;
+        }
+        // write control
+        if ($data !== $this->fetch($id)) {
+            @unlink($file);
+            return false;
+        }
+        return true;
+    }
+    
+    /**
+     * Get the size of a cache entry
+     *
+     * @param string $id cache id (e.g. a filename)
+     * 
+     * @return int size in bytes
+     */
+    public function getSize($id)
+    {
+        return filesize($this->_path . '/' . $id);
+    }
+    
+    /**
+     * Does a valid cache entry exist?
+     *
+     * @param string $id cache id (e.g. a filename)
+     * 
+     * @param int $srcMtime mtime of the original source file(s)
+     * 
+     * @return bool exists
+     */
+    public function isValid($id, $srcMtime)
+    {
+        $file = $this->_path . '/' . $id;
+        return (is_file($file) && (filemtime($file) >= $srcMtime));
+    }
+    
+    /**
+     * Send the cached content to output
+     *
+     * @param string $id cache id (e.g. a filename)
+     */
+    public function display($id)
+    {
+        if ($this->_locking) {
+            $fp = fopen($this->_path . '/' . $id, 'rb');
+            flock($fp, LOCK_SH);
+            fpassthru($fp);
+            flock($fp, LOCK_UN);
+            fclose($fp);
+        } else {
+            readfile($this->_path . '/' . $id);            
+        }
+    }
+    
+	/**
+     * Fetch the cached content
+     *
+     * @param string $id cache id (e.g. a filename)
+     * 
+     * @return string
+     */
+    public function fetch($id)
+    {
+        if ($this->_locking) {
+            $fp = fopen($this->_path . '/' . $id, 'rb');
+            flock($fp, LOCK_SH);
+            $ret = stream_get_contents($fp);
+            flock($fp, LOCK_UN);
+            fclose($fp);
+            return $ret;
+        } else {
+            return file_get_contents($this->_path . '/' . $id);
+        }
+    }
+    
+    /**
+     * Fetch the cache path used
+     *
+     * @return string
+     */
+    public function getPath()
+    {
+        return $this->_path;
+    }
+    
+    private $_path = null;
+    private $_locking = null;
+}
Index: moodle/lib/minify/lib/Minify/Cache/Memcache.php
--- moodle/lib/minify/lib/Minify/Cache/Memcache.php No Base Revision
+++ moodle/lib/minify/lib/Minify/Cache/Memcache.php Locally New
@@ -0,0 +1,137 @@
+<?php
+/**
+ * Class Minify_Cache_Memcache
+ * @package Minify
+ */
+
+/**
+ * Memcache-based cache class for Minify
+ * 
+ * <code>
+ * // fall back to disk caching if memcache can't connect
+ * $memcache = new Memcache;
+ * if ($memcache->connect('localhost', 11211)) {
+ *     Minify::setCache(new Minify_Cache_Memcache($memcache));
+ * } else {
+ *     Minify::setCache();
+ * }
+ * </code>
+ **/
+class Minify_Cache_Memcache {
+    
+    /**
+     * Create a Minify_Cache_Memcache object, to be passed to 
+     * Minify::setCache().
+     *
+     * @param Memcache $memcache already-connected instance
+     * 
+     * @param int $expire seconds until expiration (default = 0
+     * meaning the item will not get an expiration date)
+     * 
+     * @return null
+     */
+    public function __construct($memcache, $expire = 0)
+    {
+        $this->_mc = $memcache;
+        $this->_exp = $expire;
+    }
+    
+    /**
+     * Write data to cache.
+     *
+     * @param string $id cache id
+     * 
+     * @param string $data
+     * 
+     * @return bool success
+     */
+    public function store($id, $data)
+    {
+        return $this->_mc->set($id, "{$_SERVER['REQUEST_TIME']}|{$data}", 0, $this->_exp);
+    }
+    
+    
+    /**
+     * Get the size of a cache entry
+     *
+     * @param string $id cache id
+     * 
+     * @return int size in bytes
+     */
+    public function getSize($id)
+    {
+        return $this->_fetch($id)
+            ? strlen($this->_data)
+            : false;
+    }
+    
+    /**
+     * Does a valid cache entry exist?
+     *
+     * @param string $id cache id
+     * 
+     * @param int $srcMtime mtime of the original source file(s)
+     * 
+     * @return bool exists
+     */
+    public function isValid($id, $srcMtime)
+    {
+        return ($this->_fetch($id) && ($this->_lm >= $srcMtime));
+    }
+    
+    /**
+     * Send the cached content to output
+     *
+     * @param string $id cache id
+     */
+    public function display($id)
+    {
+        echo $this->_fetch($id)
+            ? $this->_data
+            : '';
+    }
+    
+	/**
+     * Fetch the cached content
+     *
+     * @param string $id cache id
+     * 
+     * @return string
+     */
+    public function fetch($id)
+    {
+        return $this->_fetch($id)
+            ? $this->_data
+            : '';
+    }
+    
+    private $_mc = null;
+    private $_exp = null;
+    
+    // cache of most recently fetched id
+    private $_lm = null;
+    private $_data = null;
+    private $_id = null;
+    
+	/**
+     * Fetch data and timestamp from memcache, store in instance
+     * 
+     * @param string $id
+     * 
+     * @return bool success
+     */
+    private function _fetch($id)
+    {
+        if ($this->_id === $id) {
+            return true;
+        }
+        $ret = $this->_mc->get($id);
+        if (false === $ret) {
+            $this->_id = null;
+            return false;
+        }
+        list($this->_lm, $this->_data) = explode('|', $ret, 2);
+        $this->_id = $id;
+        return true;
+    }
+}
Index: moodle/lib/minify/lib/Minify/CommentPreserver.php
--- moodle/lib/minify/lib/Minify/CommentPreserver.php No Base Revision
+++ moodle/lib/minify/lib/Minify/CommentPreserver.php Locally New
@@ -0,0 +1,90 @@
+<?php
+/**
+ * Class Minify_CommentPreserver 
+ * @package Minify
+ */
+
+/**
+ * Process a string in pieces preserving C-style comments that begin with "/*!"
+ * 
+ * @package Minify
+ * @author Stephen Clay <steve@mrclay.org>
+ */
+class Minify_CommentPreserver {
+    
+    /**
+     * String to be prepended to each preserved comment
+     *
+     * @var string
+     */
+    public static $prepend = "\n";
+    
+    /**
+     * String to be appended to each preserved comment
+     *
+     * @var string
+     */
+    public static $append = "\n";
+    
+    /**
+     * Process a string outside of C-style comments that begin with "/*!"
+     *
+     * On each non-empty string outside these comments, the given processor 
+     * function will be called. The first "!" will be removed from the 
+     * preserved comments, and the comments will be surrounded by 
+     * Minify_CommentPreserver::$preprend and Minify_CommentPreserver::$append.
+     * 
+     * @param string $content
+     * @param callback $processor function
+     * @param array $args array of extra arguments to pass to the processor 
+     * function (default = array())
+     * @return string
+     */
+    public static function process($content, $processor, $args = array())
+    {
+        $ret = '';
+        while (true) {
+            list($beforeComment, $comment, $afterComment) = self::_nextComment($content);
+            if ('' !== $beforeComment) {
+                $callArgs = $args;
+                array_unshift($callArgs, $beforeComment);
+                $ret .= call_user_func_array($processor, $callArgs);    
+            }
+            if (false === $comment) {
+                break;
+            }
+            $ret .= $comment;
+            $content = $afterComment;
+        }
+        return $ret;
+    }
+    
+    /**
+     * Extract comments that YUI Compressor preserves.
+     * 
+     * @param string $in input
+     * 
+     * @return array 3 elements are returned. If a YUI comment is found, the
+     * 2nd element is the comment and the 1st and 2nd are the surrounding
+     * strings. If no comment is found, the entire string is returned as the 
+     * 1st element and the other two are false.
+     */
+    private static function _nextComment($in)
+    {
+        if (
+            false === ($start = strpos($in, '/*!'))
+            || false === ($end = strpos($in, '*/', $start + 3))
+        ) {
+            return array($in, false, false);
+        }
+        $ret = array(
+            substr($in, 0, $start)
+            ,self::$prepend . '/*' . substr($in, $start + 3, $end - $start - 1) . self::$append
+        );
+        $endChars = (strlen($in) - $end - 2);
+        $ret[] = (0 === $endChars)
+            ? ''
+            : substr($in, -$endChars);
+        return $ret;
+    }
+}
Index: moodle/lib/minify/lib/Minify/Controller/Base.php
--- moodle/lib/minify/lib/Minify/Controller/Base.php No Base Revision
+++ moodle/lib/minify/lib/Minify/Controller/Base.php Locally New
@@ -0,0 +1,202 @@
+<?php
+/**
+ * Class Minify_Controller_Base  
+ * @package Minify
+ */
+
+/**
+ * Base class for Minify controller
+ * 
+ * The controller class validates a request and uses it to create sources
+ * for minification and set options like contentType. It's also responsible
+ * for loading minifier code upon request.
+ * 
+ * @package Minify
+ * @author Stephen Clay <steve@mrclay.org>
+ */
+abstract class Minify_Controller_Base {
+    
+    /**
+     * Setup controller sources and set an needed options for Minify::source
+     * 
+     * You must override this method in your subclass controller to set 
+     * $this->sources. If the request is NOT valid, make sure $this->sources 
+     * is left an empty array. Then strip any controller-specific options from 
+     * $options and return it. To serve files, $this->sources must be an array of
+     * Minify_Source objects.
+     * 
+     * @param array $options controller and Minify options
+     * 
+     * return array $options Minify::serve options
+     */
+    abstract public function setupSources($options);
+    
+    /**
+     * Get default Minify options for this controller.
+     * 
+     * Override in subclass to change defaults
+     *
+     * @return array options for Minify
+     */
+    public function getDefaultMinifyOptions() {
+        return array(
+            'isPublic' => true
+            ,'encodeOutput' => function_exists('gzdeflate')
+            ,'encodeMethod' => null // determine later
+            ,'encodeLevel' => 9
+            ,'minifierOptions' => array() // no minifier options
+            ,'contentTypeCharset' => 'utf-8'
+            ,'maxAge' => 1800 // 30 minutes
+            ,'rewriteCssUris' => true
+            ,'bubbleCssImports' => false
+            ,'quiet' => false // serve() will send headers and output
+            ,'debug' => false
+            
+            // if you override this, the response code MUST be directly after 
+            // the first space.
+            ,'badRequestHeader' => 'HTTP/1.0 400 Bad Request'
+            
+            // callback function to see/modify content of all sources
+            ,'postprocessor' => null
+            // file to require to load preprocessor
+            ,'postprocessorRequire' => null
+        );
+    }  
+
+    /**
+     * Get default minifiers for this controller.
+     * 
+     * Override in subclass to change defaults
+     *
+     * @return array minifier callbacks for common types
+     */
+    public function getDefaultMinifers() {
+        $ret[Minify::TYPE_JS] = array('JSMin', 'minify');
+        $ret[Minify::TYPE_CSS] = array('Minify_CSS', 'minify');
+        $ret[Minify::TYPE_HTML] = array('Minify_HTML', 'minify');
+        return $ret;
+    }
+    
+    /**
+     * Load any code necessary to execute the given minifier callback.
+     * 
+     * The controller is responsible for loading minification code on demand
+     * via this method. This built-in function will only load classes for
+     * static method callbacks where the class isn't already defined. It uses
+     * the PEAR convention, so, given array('Jimmy_Minifier', 'minCss'), this 
+     * function will include 'Jimmy/Minifier.php'.
+     * 
+     * If you need code loaded on demand and this doesn't suit you, you'll need
+     * to override this function in your subclass. 
+     * @see Minify_Controller_Page::loadMinifier()
+     * 
+     * @param callback $minifierCallback callback of minifier function
+     * 
+     * @return null
+     */
+    public function loadMinifier($minifierCallback)
+    {
+        if (is_array($minifierCallback)
+            && is_string($minifierCallback[0])
+            && !class_exists($minifierCallback[0], false)) {
+            
+            require str_replace('_', '/', $minifierCallback[0]) . '.php';
+        }
+    }
+    
+    /**
+     * Is a user-given file within an allowable directory, existing,
+     * and having an extension js/css/html/txt ?
+     * 
+     * This is a convenience function for controllers that have to accept
+     * user-given paths
+     *
+     * @param string $file full file path (already processed by realpath())
+     * 
+     * @param array $safeDirs directories where files are safe to serve. Files can also
+     * be in subdirectories of these directories.
+     * 
+     * @return bool file is safe
+     */
+    public static function _fileIsSafe($file, $safeDirs)
+    {
+        $pathOk = false;
+        foreach ((array)$safeDirs as $safeDir) {
+            if (strpos($file, $safeDir) === 0) {
+                $pathOk = true;
+                break;
+            }
+        }
+        $base = basename($file);
+        if (! $pathOk || ! is_file($file) || $base[0] === '.') {
+            return false;
+        }
+        list($revExt) = explode('.', strrev($base));
+        return in_array(strrev($revExt), array('js', 'css', 'html', 'txt'));
+    }
+    
+    /**
+     * @var array instances of Minify_Source, which provide content and
+     * any individual minification needs.
+     * 
+     * @see Minify_Source
+     */
+    public $sources = array();
+    
+    /**
+     * Mix in default controller options with user-given options
+     * 
+     * @param array $options user options
+     * 
+     * @return array mixed options
+     */
+    public final function mixInDefaultOptions($options)
+    {
+        $ret = array_merge(
+            $this->getDefaultMinifyOptions(), $options
+        );
+        if (! isset($options['minifiers'])) {
+            $options['minifiers'] = array();
+        }
+        $ret['minifiers'] = array_merge(
+            $this->getDefaultMinifers(), $options['minifiers']
+        );
+        return $ret;
+    }
+    
+    /**
+     * Analyze sources (if there are any) and set $options 'contentType' 
+     * and 'lastModifiedTime' if they already aren't.
+     * 
+     * @param array $options options for Minify
+     * 
+     * @return array options for Minify
+     */
+    public final function analyzeSources($options = array()) 
+    {
+        if ($this->sources) {
+            if (! isset($options['contentType'])) {
+                $options['contentType'] = Minify_Source::getContentType($this->sources);
+            }
+            // last modified is needed for caching, even if setExpires is set
+            if (! isset($options['lastModifiedTime'])) {
+                $max = 0;
+                foreach ($this->sources as $source) {
+                    $max = max($source->lastModified, $max);
+                }
+                $options['lastModifiedTime'] = $max;
+            }    
+        }
+        return $options;
+    }
+
+    /**
+     * Send message to the Minify logger
+     * @param string $msg
+     * @return null
+     */
+    protected function log($msg) {
+        require_once 'Minify/Logger.php';
+        Minify_Logger::log($msg);
+    }
+}
Index: moodle/lib/minify/lib/Minify/Controller/Files.php
--- moodle/lib/minify/lib/Minify/Controller/Files.php No Base Revision
+++ moodle/lib/minify/lib/Minify/Controller/Files.php Locally New
@@ -0,0 +1,78 @@
+<?php
+/**
+ * Class Minify_Controller_Files  
+ * @package Minify
+ */
+
+require_once 'Minify/Controller/Base.php';
+
+/**
+ * Controller class for minifying a set of files
+ * 
+ * E.g. the following would serve the minified Javascript for a site
+ * <code>
+ * Minify::serve('Files', array(
+ *     'files' => array(
+ *         '//js/jquery.js'
+ *         ,'//js/plugins.js'
+ *         ,'/home/username/file.js'
+ *     )
+ * ));
+ * </code>
+ * 
+ * As a shortcut, the controller will replace "//" at the beginning
+ * of a filename with $_SERVER['DOCUMENT_ROOT'] . '/'.
+ *
+ * @package Minify
+ * @author Stephen Clay <steve@mrclay.org>
+ */
+class Minify_Controller_Files extends Minify_Controller_Base {
+    
+    /**
+     * Set up file sources
+     * 
+     * @param array $options controller and Minify options
+     * @return array Minify options
+     * 
+     * Controller options:
+     * 
+     * 'files': (required) array of complete file paths, or a single path
+     */
+    public function setupSources($options) {
+        // strip controller options
+        
+        $files = $options['files'];
+        // if $files is a single object, casting will break it
+        if (is_object($files)) {
+            $files = array($files);
+        } elseif (! is_array($files)) {
+            $files = (array)$files;
+        }
+        unset($options['files']);
+        
+        $sources = array();
+        foreach ($files as $file) {
+            if ($file instanceof Minify_Source) {
+                $sources[] = $file;
+                continue;
+            }
+            if (0 === strpos($file, '//')) {
+                $file = $_SERVER['DOCUMENT_ROOT'] . substr($file, 1);
+            }
+            $realPath = realpath($file);
+            if (is_file($realPath)) {
+                $sources[] = new Minify_Source(array(
+                    'filepath' => $realPath
+                ));    
+            } else {
+                $this->log("The path \"{$file}\" could not be found (or was not a file)");
+                return $options;
+            }
+        }
+        if ($sources) {
+            $this->sources = $sources;
+        }
+        return $options;
+    }
+}
+
Index: moodle/lib/minify/lib/Minify/Controller/Groups.php
--- moodle/lib/minify/lib/Minify/Controller/Groups.php No Base Revision
+++ moodle/lib/minify/lib/Minify/Controller/Groups.php Locally New
@@ -0,0 +1,94 @@
+<?php
+/**
+ * Class Minify_Controller_Groups  
+ * @package Minify
+ */
+
+require_once 'Minify/Controller/Base.php';
+
+/**
+ * Controller class for serving predetermined groups of minimized sets, selected
+ * by PATH_INFO
+ * 
+ * <code>
+ * Minify::serve('Groups', array( 
+ *     'groups' => array(
+ *         'css' => array('//css/type.css', '//css/layout.css')
+ *        ,'js' => array('//js/jquery.js', '//js/site.js')
+ *     )
+ * ));
+ * </code>
+ * 
+ * If the above code were placed in /serve.php, it would enable the URLs
+ * /serve.php/js and /serve.php/css
+ * 
+ * As a shortcut, the controller will replace "//" at the beginning
+ * of a filename with $_SERVER['DOCUMENT_ROOT'] . '/'.
+ * 
+ * @package Minify
+ * @author Stephen Clay <steve@mrclay.org>
+ */
+class Minify_Controller_Groups extends Minify_Controller_Base {
+    
+    /**
+     * Set up groups of files as sources
+     * 
+     * @param array $options controller and Minify options
+     * @return array Minify options
+     * 
+     * Controller options:
+     * 
+     * 'groups': (required) array mapping PATH_INFO strings to arrays
+     * of complete file paths. @see Minify_Controller_Groups 
+     */
+    public function setupSources($options) {
+        // strip controller options
+        $groups = $options['groups'];
+        unset($options['groups']);
+        
+        // mod_fcgid places PATH_INFO in ORIG_PATH_INFO
+        $pi = isset($_SERVER['ORIG_PATH_INFO'])
+            ? substr($_SERVER['ORIG_PATH_INFO'], 1) 
+            : (isset($_SERVER['PATH_INFO'])
+                ? substr($_SERVER['PATH_INFO'], 1) 
+                : false
+            );
+        if (false === $pi || ! isset($groups[$pi])) {
+            // no PATH_INFO or not a valid group
+            $this->log("Missing PATH_INFO or no group set for \"$pi\"");
+            return $options;
+        }
+        $sources = array();
+        
+        $files = $groups[$pi];
+        // if $files is a single object, casting will break it
+        if (is_object($files)) {
+            $files = array($files);
+        } elseif (! is_array($files)) {
+            $files = (array)$files;
+        }
+        foreach ($files as $file) {
+            if ($file instanceof Minify_Source) {
+                $sources[] = $file;
+                continue;
+            }
+            if (0 === strpos($file, '//')) {
+                $file = $_SERVER['DOCUMENT_ROOT'] . substr($file, 1);
+            }
+            $realPath = realpath($file);
+            if (is_file($realPath)) {
+                $sources[] = new Minify_Source(array(
+                    'filepath' => $realPath
+                ));    
+            } else {
+                $this->log("The path \"{$file}\" could not be found (or was not a file)");
+                return $options;
+            }
+        }
+        if ($sources) {
+            $this->sources = $sources;
+        }
+        return $options;
+    }
+}
+
Index: moodle/lib/minify/lib/Minify/Controller/MinApp.php
--- moodle/lib/minify/lib/Minify/Controller/MinApp.php No Base Revision
+++ moodle/lib/minify/lib/Minify/Controller/MinApp.php Locally New
@@ -0,0 +1,132 @@
+<?php
+/**
+ * Class Minify_Controller_MinApp  
+ * @package Minify
+ */
+
+require_once 'Minify/Controller/Base.php';
+
+/**
+ * Controller class for requests to /min/index.php
+ * 
+ * @package Minify
+ * @author Stephen Clay <steve@mrclay.org>
+ */
+class Minify_Controller_MinApp extends Minify_Controller_Base {
+    
+    /**
+     * Set up groups of files as sources
+     * 
+     * @param array $options controller and Minify options
+     * @return array Minify options
+     * 
+     */
+    public function setupSources($options) {
+        // filter controller options
+        $cOptions = array_merge(
+            array(
+                'allowDirs' => '//'
+                ,'groupsOnly' => false
+                ,'groups' => array()
+                ,'maxFiles' => 10                
+            )
+            ,(isset($options['minApp']) ? $options['minApp'] : array())
+        );
+        unset($options['minApp']);
+        $sources = array();
+        if (isset($_GET['g'])) {
+            // try groups
+            if (! isset($cOptions['groups'][$_GET['g']])) {
+                $this->log("A group configuration for \"{$_GET['g']}\" was not set");
+                return $options;
+            }
+            
+            $files = $cOptions['groups'][$_GET['g']];
+            // if $files is a single object, casting will break it
+            if (is_object($files)) {
+                $files = array($files);
+            } elseif (! is_array($files)) {
+                $files = (array)$files;
+            }
+            foreach ($files as $file) {
+                if ($file instanceof Minify_Source) {
+                    $sources[] = $file;
+                    continue;
+                }
+                if (0 === strpos($file, '//')) {
+                    $file = $_SERVER['DOCUMENT_ROOT'] . substr($file, 1);
+                }
+                $file = realpath($file);
+                if (is_file($file)) {
+                    $sources[] = new Minify_Source(array(
+                        'filepath' => $file
+                    ));    
+                } else {
+                    $this->log("The path \"{$file}\" could not be found (or was not a file)");
+                    return $options;
+                }
+            }
+        } elseif (! $cOptions['groupsOnly'] && isset($_GET['f'])) {
+            // try user files
+            // The following restrictions are to limit the URLs that minify will
+            // respond to. Ideally there should be only one way to reference a file.
+            if (// verify at least one file, files are single comma separated, 
+                // and are all same extension
+                ! preg_match('/^[^,]+\\.(css|js)(?:,[^,]+\\.\\1)*$/', $_GET['f'])
+                // no "//"
+                || strpos($_GET['f'], '//') !== false
+                // no "\"
+                || strpos($_GET['f'], '\\') !== false
+                // no "./"
+                || preg_match('/(?:^|[^\\.])\\.\\//', $_GET['f'])
+            ) {
+                $this->log("GET param 'f' invalid (see MinApp.php line 63)");
+                return $options;
+            }
+            $files = explode(',', $_GET['f']);
+            if (count($files) > $cOptions['maxFiles'] || $files != array_unique($files)) {
+                $this->log("Too many or duplicate files specified");
+                return $options;
+            }
+            if (isset($_GET['b'])) {
+                // check for validity
+                if (preg_match('@^[^/]+(?:/[^/]+)*$@', $_GET['b'])
+                    && false === strpos($_GET['b'], '..')
+                    && $_GET['b'] !== '.') {
+                    // valid base
+                    $base = "/{$_GET['b']}/";       
+                } else {
+                    $this->log("GET param 'b' invalid (see MinApp.php line 84)");
+                    return $options;
+                }
+            } else {
+                $base = '/';
+            }
+            $allowDirs = array();
+            foreach ((array)$cOptions['allowDirs'] as $allowDir) {
+                $allowDirs[] = realpath(str_replace('//', $_SERVER['DOCUMENT_ROOT'] . '/', $allowDir));
+            }
+            foreach ($files as $file) {
+                $path = $_SERVER['DOCUMENT_ROOT'] . $base . $file;
+                $file = realpath($path);
+                if (false === $file) {
+                    $this->log("Path \"{$path}\" failed realpath()");
+                    return $options;
+                } elseif (! parent::_fileIsSafe($file, $allowDirs)) {
+                    $this->log("Path \"{$path}\" failed Minify_Controller_Base::_fileIsSafe()");
+                    return $options;
+                } else {
+                    $sources[] = new Minify_Source(array(
+                        'filepath' => $file
+                    ));
+                }
+            }
+        }
+        if ($sources) {
+            $this->sources = $sources;
+        } else {
+            $this->log("No sources to serve");
+        }
+        return $options;
+    }
+}
Index: moodle/lib/minify/lib/Minify/Controller/Page.php
--- moodle/lib/minify/lib/Minify/Controller/Page.php No Base Revision
+++ moodle/lib/minify/lib/Minify/Controller/Page.php Locally New
@@ -0,0 +1,82 @@
+<?php
+/**
+ * Class Minify_Controller_Page  
+ * @package Minify
+ */
+
+require_once 'Minify/Controller/Base.php';
+
+/**
+ * Controller class for serving a single HTML page
+ * 
+ * @link http://code.google.com/p/minify/source/browse/trunk/web/examples/1/index.php#59
+ * @package Minify
+ * @author Stephen Clay <steve@mrclay.org>
+ */
+class Minify_Controller_Page extends Minify_Controller_Base {
+    
+    /**
+     * Set up source of HTML content
+     * 
+     * @param array $options controller and Minify options
+     * @return array Minify options
+     * 
+     * Controller options:
+     * 
+     * 'content': (required) HTML markup
+     * 
+     * 'id': (required) id of page (string for use in server-side caching)
+     * 
+     * 'lastModifiedTime': timestamp of when this content changed. This
+     * is recommended to allow both server and client-side caching.
+     * 
+     * 'minifyAll': should all CSS and Javascript blocks be individually 
+     * minified? (default false) 
+     *
+     * @todo Add 'file' option to read HTML file.
+     */
+    public function setupSources($options) {
+        if (isset($options['file'])) {
+            $sourceSpec = array(
+                'filepath' => $options['file']
+            );
+        } else {
+            // strip controller options
+            $sourceSpec = array(
+                'content' => $options['content']
+                ,'id' => $options['id']
+            );
+            unset($options['content'], $options['id']);
+        }
+        if (isset($options['minifyAll'])) {
+            // this will be the 2nd argument passed to Minify_HTML::minify()
+            $sourceSpec['minifyOptions'] = array(
+                'cssMinifier' => array('Minify_CSS', 'minify')
+                ,'jsMinifier' => array('JSMin', 'minify')
+            );
+            $this->_loadCssJsMinifiers = true;
+            unset($options['minifyAll']);
+        }
+        $this->sources[] = new Minify_Source($sourceSpec);
+        
+        $options['contentType'] = Minify::TYPE_HTML;
+        return $options;
+    }
+    
+    protected $_loadCssJsMinifiers = false;
+    
+    /**
+     * @see Minify_Controller_Base::loadMinifier()
+     */
+    public function loadMinifier($minifierCallback)
+    {
+        if ($this->_loadCssJsMinifiers) {
+            // Minify will not call for these so we must manually load
+            // them when Minify/HTML.php is called for.
+            require_once 'Minify/CSS.php';
+            require_once 'JSMin.php';
+        }
+        parent::loadMinifier($minifierCallback); // load Minify/HTML.php
+    }
+}
+
Index: moodle/lib/minify/lib/Minify/Controller/Version1.php
--- moodle/lib/minify/lib/Minify/Controller/Version1.php No Base Revision
+++ moodle/lib/minify/lib/Minify/Controller/Version1.php Locally New
@@ -0,0 +1,118 @@
+<?php
+/**
+ * Class Minify_Controller_Version1  
+ * @package Minify
+ */
+
+require_once 'Minify/Controller/Base.php';
+
+/**
+ * Controller class for emulating version 1 of minify.php
+ * 
+ * <code>
+ * Minify::serve('Version1');
+ * </code>
+ * 
+ * @package Minify
+ * @author Stephen Clay <steve@mrclay.org>
+ */
+class Minify_Controller_Version1 extends Minify_Controller_Base {
+    
+    /**
+     * Set up groups of files as sources
+     * 
+     * @param array $options controller and Minify options
+     * @return array Minify options
+     * 
+     */
+    public function setupSources($options) {
+        self::_setupDefines();
+        if (MINIFY_USE_CACHE) {
+            $cacheDir = defined('MINIFY_CACHE_DIR')
+                ? MINIFY_CACHE_DIR
+                : '';
+            Minify::setCache($cacheDir);
+        }
+        $options['badRequestHeader'] = 'HTTP/1.0 404 Not Found';
+        $options['contentTypeCharset'] = MINIFY_ENCODING;
+
+        // The following restrictions are to limit the URLs that minify will
+        // respond to. Ideally there should be only one way to reference a file.
+        if (! isset($_GET['files'])
+            // verify at least one file, files are single comma separated, 
+            // and are all same extension
+            || ! preg_match('/^[^,]+\\.(css|js)(,[^,]+\\.\\1)*$/', $_GET['files'], $m)
+            // no "//" (makes URL rewriting easier)
+            || strpos($_GET['files'], '//') !== false
+            // no "\"
+            || strpos($_GET['files'], '\\') !== false
+            // no "./"
+            || preg_match('/(?:^|[^\\.])\\.\\//', $_GET['files'])
+        ) {
+            return $options;
+        }
+        $extension = $m[1];
+        
+        $files = explode(',', $_GET['files']);
+        if (count($files) > MINIFY_MAX_FILES) {
+            return $options;
+        }
+        
+        // strings for prepending to relative/absolute paths
+        $prependRelPaths = dirname($_SERVER['SCRIPT_FILENAME'])
+            . DIRECTORY_SEPARATOR;
+        $prependAbsPaths = $_SERVER['DOCUMENT_ROOT'];
+        
+        $sources = array();
+        $goodFiles = array();
+        $hasBadSource = false;
+        
+        $allowDirs = isset($options['allowDirs'])
+            ? $options['allowDirs']
+            : MINIFY_BASE_DIR;
+        
+        foreach ($files as $file) {
+            // prepend appropriate string for abs/rel paths
+            $file = ($file[0] === '/' ? $prependAbsPaths : $prependRelPaths) . $file;
+            // make sure a real file!
+            $file = realpath($file);
+            // don't allow unsafe or duplicate files
+            if (parent::_fileIsSafe($file, $allowDirs) 
+                && !in_array($file, $goodFiles)) 
+            {
+                $goodFiles[] = $file;
+                $srcOptions = array(
+                    'filepath' => $file
+                );
+                $this->sources[] = new Minify_Source($srcOptions);
+            } else {
+                $hasBadSource = true;
+                break;
+            }
+        }
+        if ($hasBadSource) {
+            $this->sources = array();
+        }
+        if (! MINIFY_REWRITE_CSS_URLS) {
+            $options['rewriteCssUris'] = false;
+        }
+        return $options;
+    }
+    
+    private static function _setupDefines()
+    {
+        $defaults = array(
+            'MINIFY_BASE_DIR' => realpath($_SERVER['DOCUMENT_ROOT'])
+            ,'MINIFY_ENCODING' => 'utf-8'
+            ,'MINIFY_MAX_FILES' => 16
+            ,'MINIFY_REWRITE_CSS_URLS' => true
+            ,'MINIFY_USE_CACHE' => true
+        );
+        foreach ($defaults as $const => $val) {
+            if (! defined($const)) {
+                define($const, $val);
+            }
+        }
+    }
+}
+
Index: moodle/lib/minify/lib/Minify/HTML.php
--- moodle/lib/minify/lib/Minify/HTML.php No Base Revision
+++ moodle/lib/minify/lib/Minify/HTML.php Locally New
@@ -0,0 +1,245 @@
+<?php
+/**
+ * Class Minify_HTML  
+ * @package Minify
+ */
+
+/**
+ * Compress HTML
+ *
+ * This is a heavy regex-based removal of whitespace, unnecessary comments and 
+ * tokens. IE conditional comments are preserved. There are also options to have
+ * STYLE and SCRIPT blocks compressed by callback functions. 
+ * 
+ * A test suite is available.
+ * 
+ * @package Minify
+ * @author Stephen Clay <steve@mrclay.org>
+ */
+class Minify_HTML {
+
+    /**
+     * "Minify" an HTML page
+     *
+     * @param string $html
+     *
+     * @param array $options
+     *
+     * 'cssMinifier' : (optional) callback function to process content of STYLE
+     * elements.
+     * 
+     * 'jsMinifier' : (optional) callback function to process content of SCRIPT
+     * elements. Note: the type attribute is ignored.
+     * 
+     * 'xhtml' : (optional boolean) should content be treated as XHTML1.0? If
+     * unset, minify will sniff for an XHTML doctype.
+     * 
+     * @return string
+     */
+    public static function minify($html, $options = array()) {
+        $min = new Minify_HTML($html, $options);
+        return $min->process();
+    }
+    
+    
+    /**
+     * Create a minifier object
+     *
+     * @param string $html
+     *
+     * @param array $options
+     *
+     * 'cssMinifier' : (optional) callback function to process content of STYLE
+     * elements.
+     * 
+     * 'jsMinifier' : (optional) callback function to process content of SCRIPT
+     * elements. Note: the type attribute is ignored.
+     * 
+     * 'xhtml' : (optional boolean) should content be treated as XHTML1.0? If
+     * unset, minify will sniff for an XHTML doctype.
+     * 
+     * @return null
+     */
+    public function __construct($html, $options = array())
+    {
+        $this->_html = str_replace("\r\n", "\n", trim($html));
+        if (isset($options['xhtml'])) {
+            $this->_isXhtml = (bool)$options['xhtml'];
+        }
+        if (isset($options['cssMinifier'])) {
+            $this->_cssMinifier = $options['cssMinifier'];
+        }
+        if (isset($options['jsMinifier'])) {
+            $this->_jsMinifier = $options['jsMinifier'];
+        }
+    }
+    
+    
+    /**
+     * Minify the markeup given in the constructor
+     * 
+     * @return string
+     */
+    public function process()
+    {
+        if ($this->_isXhtml === null) {
+            $this->_isXhtml = (false !== strpos($this->_html, '<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML'));
+        }
+        
+        $this->_replacementHash = 'MINIFYHTML' . md5($_SERVER['REQUEST_TIME']);
+        $this->_placeholders = array();
+        
+        // replace SCRIPTs (and minify) with placeholders
+        $this->_html = preg_replace_callback(
+            '/(\\s*)(<script\\b[^>]*?>)([\\s\\S]*?)<\\/script>(\\s*)/i'
+            ,array($this, '_removeScriptCB')
+            ,$this->_html);
+        
+        // replace STYLEs (and minify) with placeholders
+        $this->_html = preg_replace_callback(
+            '/\\s*(<style\\b[^>]*?>)([\\s\\S]*?)<\\/style>\\s*/i'
+            ,array($this, '_removeStyleCB')
+            ,$this->_html);
+        
+        // remove HTML comments (not containing IE conditional comments).
+        $this->_html = preg_replace_callback(
+            '/<!--([\\s\\S]*?)-->/'
+            ,array($this, '_commentCB')
+            ,$this->_html);
+        
+        // replace PREs with placeholders
+        $this->_html = preg_replace_callback('/\\s*(<pre\\b[^>]*?>[\\s\\S]*?<\\/pre>)\\s*/i'
+            ,array($this, '_removePreCB')
+            ,$this->_html);
+        
+        // replace TEXTAREAs with placeholders
+        $this->_html = preg_replace_callback(
+            '/\\s*(<textarea\\b[^>]*?>[\\s\\S]*?<\\/textarea>)\\s*/i'
+            ,array($this, '_removeTextareaCB')
+            ,$this->_html);
+        
+        // trim each line.
+        // @todo take into account attribute values that span multiple lines.
+        $this->_html = preg_replace('/^\\s+|\\s+$/m', '', $this->_html);
+        
+        // remove ws around block/undisplayed elements
+        $this->_html = preg_replace('/\\s+(<\\/?(?:area|base(?:font)?|blockquote|body'
+            .'|caption|center|cite|col(?:group)?|dd|dir|div|dl|dt|fieldset|form'
+            .'|frame(?:set)?|h[1-6]|head|hr|html|legend|li|link|map|menu|meta'
+            .'|ol|opt(?:group|ion)|p|param|t(?:able|body|head|d|h||r|foot|itle)'
+            .'|ul)\\b[^>]*>)/i', '$1', $this->_html);
+        
+        // remove ws outside of all elements
+        $this->_html = preg_replace_callback(
+            '/>([^<]+)</'
+            ,array($this, '_outsideTagCB')
+            ,$this->_html);
+        
+        // use newlines before 1st attribute in open tags (to limit line lengths)
+        $this->_html = preg_replace('/(<[a-z\\-]+)\\s+([^>]+>)/i', "$1\n$2", $this->_html);
+        
+        // fill placeholders
+        $this->_html = str_replace(
+            array_keys($this->_placeholders)
+            ,array_values($this->_placeholders)
+            ,$this->_html
+        );
+        return $this->_html;
+    }
+    
+    protected function _commentCB($m)
+    {
+        return (0 === strpos($m[1], '[') || false !== strpos($m[1], '<!['))
+            ? $m[0]
+            : '';
+    }
+    
+    protected function _reservePlace($content)
+    {
+        $placeholder = '%' . $this->_replacementHash . count($this->_placeholders) . '%';
+        $this->_placeholders[$placeholder] = $content;
+        return $placeholder;
+    }
+
+    protected $_isXhtml = null;
+    protected $_replacementHash = null;
+    protected $_placeholders = array();
+    protected $_cssMinifier = null;
+    protected $_jsMinifier = null;
+
+    protected function _outsideTagCB($m)
+    {
+        return '>' . preg_replace('/^\\s+|\\s+$/', ' ', $m[1]) . '<';
+    }
+    
+    protected function _removePreCB($m)
+    {
+        return $this->_reservePlace($m[1]);
+    }
+    
+    protected function _removeTextareaCB($m)
+    {
+        return $this->_reservePlace($m[1]);
+    }
+
+    protected function _removeStyleCB($m)
+    {
+        $openStyle = $m[1];
+        $css = $m[2];
+        // remove HTML comments
+        $css = preg_replace('/(?:^\\s*<!--|-->\\s*$)/', '', $css);
+        
+        // remove CDATA section markers
+        $css = $this->_removeCdata($css);
+        
+        // minify
+        $minifier = $this->_cssMinifier
+            ? $this->_cssMinifier
+            : 'trim';
+        $css = call_user_func($minifier, $css);
+        
+        return $this->_reservePlace($this->_needsCdata($css)
+            ? "{$openStyle}/*<![CDATA[*/{$css}/*]]>*/</style>"
+            : "{$openStyle}{$css}</style>"
+        );
+    }
+
+    protected function _removeScriptCB($m)
+    {
+        $openScript = $m[2];
+        $js = $m[3];
+        
+        // whitespace surrounding? preserve at least one space
+        $ws1 = ($m[1] === '') ? '' : ' ';
+        $ws2 = ($m[4] === '') ? '' : ' ';
+ 
+        // remove HTML comments (and ending "//" if present)
+        $js = preg_replace('/(?:^\\s*<!--\\s*|\\s*(?:\\/\\/)?\\s*-->\\s*$)/', '', $js);
+            
+        // remove CDATA section markers
+        $js = $this->_removeCdata($js);
+        
+        // minify
+        $minifier = $this->_jsMinifier
+            ? $this->_jsMinifier
+            : 'trim'; 
+        $js = call_user_func($minifier, $js);
+        
+        return $this->_reservePlace($this->_needsCdata($js)
+            ? "{$ws1}{$openScript}/*<![CDATA[*/{$js}/*]]>*/</script>{$ws2}"
+            : "{$ws1}{$openScript}{$js}</script>{$ws2}"
+        );
+    }
+
+    protected function _removeCdata($str)
+    {
+        return (false !== strpos($str, '<![CDATA['))
+            ? str_replace(array('<![CDATA[', ']]>'), '', $str)
+            : $str;
+    }
+    
+    protected function _needsCdata($str)
+    {
+        return ($this->_isXhtml && preg_match('/(?:[<&]|\\-\\-|\\]\\]>)/', $str));
+    }
+}
Index: moodle/lib/minify/lib/Minify/ImportProcessor.php
--- moodle/lib/minify/lib/Minify/ImportProcessor.php No Base Revision
+++ moodle/lib/minify/lib/Minify/ImportProcessor.php Locally New
@@ -0,0 +1,157 @@
+<?php
+/**
+ * Class Minify_ImportProcessor  
+ * @package Minify
+ */
+
+/**
+ * Linearize a CSS/JS file by including content specified by CSS import
+ * declarations. In CSS files, relative URIs are fixed.
+ * 
+ * @imports will be processed regardless of where they appear in the source 
+ * files; i.e. @imports commented out or in string content will still be
+ * processed!
+ * 
+ * This has a unit test but should be considered "experimental".
+ *
+ * @package Minify
+ * @author Stephen Clay <steve@mrclay.org>
+ */
+class Minify_ImportProcessor {
+    
+    public static $filesIncluded = array();
+    
+    public static function process($file)
+    {
+        self::$filesIncluded = array();
+        self::$_isCss = (strtolower(substr($file, -4)) === '.css');
+        $obj = new Minify_ImportProcessor(dirname($file));
+        return $obj->_getContent($file);
+    }
+    
+    // allows callback funcs to know the current directory
+    private $_currentDir = null;
+    
+    // allows _importCB to write the fetched content back to the obj
+    private $_importedContent = '';
+    
+    private static $_isCss = null;
+    
+    private function __construct($currentDir)
+    {
+        $this->_currentDir = $currentDir;
+    }
+    
+    private function _getContent($file)
+    {
+        $file = realpath($file);
+        if (! $file
+            || in_array($file, self::$filesIncluded)
+            || false === ($content = @file_get_contents($file))
+        ) {
+            // file missing, already included, or failed read
+            return '';
+        }
+        self::$filesIncluded[] = realpath($file);
+        $this->_currentDir = dirname($file);
+        
+        // remove UTF-8 BOM if present
+        if (pack("CCC",0xef,0xbb,0xbf) === substr($content, 0, 3)) {
+            $content = substr($content, 3);
+        }
+        // ensure uniform EOLs
+        $content = str_replace("\r\n", "\n", $content);
+        
+        // process @imports
+        $content = preg_replace_callback(
+            '/
+                @import\\s+
+                (?:url\\(\\s*)?      # maybe url(
+                [\'"]?               # maybe quote
+                (.*?)                # 1 = URI
+                [\'"]?               # maybe end quote
+                (?:\\s*\\))?         # maybe )
+                ([a-zA-Z,\\s]*)?     # 2 = media list
+                ;                    # end token
+            /x'
+            ,array($this, '_importCB')
+            ,$content
+        );
+        
+        if (self::$_isCss) {
+            // rewrite remaining relative URIs
+            $content = preg_replace_callback(
+                '/url\\(\\s*([^\\)\\s]+)\\s*\\)/'
+                ,array($this, '_urlCB')
+                ,$content
+            );
+        }
+        
+        return $this->_importedContent . $content;
+    }
+    
+    private function _importCB($m)
+    {
+        $url = $m[1];
+        $mediaList = preg_replace('/\\s+/', '', $m[2]);
+        
+        if (strpos($url, '://') > 0) {
+            // protocol, leave in place for CSS, comment for JS
+            return self::$_isCss
+                ? $m[0]
+                : "/* Minify_ImportProcessor will not include remote content */";
+        }
+        if ('/' === $url[0]) {
+            // protocol-relative or root path
+            $url = ltrim($url, '/');
+            $file = realpath($_SERVER['DOCUMENT_ROOT']) . DIRECTORY_SEPARATOR
+                . strtr($url, '/', DIRECTORY_SEPARATOR);
+        } else {
+            // relative to current path
+            $file = $this->_currentDir . DIRECTORY_SEPARATOR 
+                . strtr($url, '/', DIRECTORY_SEPARATOR);
+        }
+        $obj = new Minify_ImportProcessor(dirname($file));
+        $content = $obj->_getContent($file);
+        if ('' === $content) {
+            // failed. leave in place for CSS, comment for JS
+            return self::$_isCss
+                ? $m[0]
+                : "/* Minify_ImportProcessor could not fetch '{$file}' */";;
+        }
+        return (!self::$_isCss || preg_match('@(?:^$|\\ball\\b)@', $mediaList))
+            ? $content
+            : "@media {$mediaList} {\n{$content}\n}\n";
+    }
+    
+    private function _urlCB($m)
+    {
+        // $m[1] is either quoted or not
+        $quote = ($m[1][0] === "'" || $m[1][0] === '"')
+            ? $m[1][0]
+            : '';
+        $url = ($quote === '')
+            ? $m[1]
+            : substr($m[1], 1, strlen($m[1]) - 2);
+        if ('/' !== $url[0]) {
+            if (strpos($url, '//') > 0) {
+                // probably starts with protocol, do not alter
+            } else {
+                // prepend path with current dir separator (OS-independent)
+                $path = $this->_currentDir 
+                    . DIRECTORY_SEPARATOR . strtr($url, '/', DIRECTORY_SEPARATOR);
+                // strip doc root
+                $path = substr($path, strlen(realpath($_SERVER['DOCUMENT_ROOT'])));
+                // fix to absolute URL
+                $url = strtr($path, '/\\', '//');
+                // remove /./ and /../ where possible
+                $url = str_replace('/./', '/', $url);
+                // inspired by patch from Oleg Cherniy
+                do {
+                    $url = preg_replace('@/[^/]+/\\.\\./@', '/', $url, 1, $changed);
+                } while ($changed);
+            }
+        }
+        return "url({$quote}{$url}{$quote})";
+    }
+}
Index: moodle/lib/minify/lib/Minify/Lines.php
--- moodle/lib/minify/lib/Minify/Lines.php No Base Revision
+++ moodle/lib/minify/lib/Minify/Lines.php Locally New
@@ -0,0 +1,131 @@
+<?php
+/**
+ * Class Minify_Lines  
+ * @package Minify
+ */
+
+/**
+ * Add line numbers in C-style comments for easier debugging of combined content
+ *
+ * @package Minify
+ * @author Stephen Clay <steve@mrclay.org>
+ * @author Adam Pedersen (Issue 55 fix)
+ */
+class Minify_Lines {
+
+    /**
+     * Add line numbers in C-style comments
+     *
+     * This uses a very basic parser easily fooled by comment tokens inside
+     * strings or regexes, but, otherwise, generally clean code will not be 
+     * mangled. URI rewriting can also be performed.
+     *
+     * @param string $content
+     * 
+     * @param array $options available options:
+     * 
+     * 'id': (optional) string to identify file. E.g. file name/path
+     *
+     * 'currentDir': (default null) if given, this is assumed to be the
+     * directory of the current CSS file. Using this, minify will rewrite
+     * all relative URIs in import/url declarations to correctly point to
+     * the desired files, and prepend a comment with debugging information about
+     * this process.
+     * 
+     * @return string 
+     */
+    public static function minify($content, $options = array()) 
+    {
+        $id = (isset($options['id']) && $options['id'])
+            ? $options['id']
+            : '';
+        $content = str_replace("\r\n", "\n", $content);
+        $lines = explode("\n", $content);
+        $numLines = count($lines);
+        // determine left padding
+        $padTo = strlen($numLines);
+        $inComment = false;
+        $i = 0;
+        $newLines = array();
+        while (null !== ($line = array_shift($lines))) {
+            if (('' !== $id) && (0 == $i % 50)) {
+                array_push($newLines, '', "/* {$id} */", '');
+            }
+            ++$i;
+            $newLines[] = self::_addNote($line, $i, $inComment, $padTo);
+            $inComment = self::_eolInComment($line, $inComment);
+        }
+        $content = implode("\n", $newLines) . "\n";
+        
+        // check for desired URI rewriting
+        if (isset($options['currentDir'])) {
+            require_once 'Minify/CSS/UriRewriter.php';
+            Minify_CSS_UriRewriter::$debugText = '';
+            $content = Minify_CSS_UriRewriter::rewrite(
+                 $content
+                ,$options['currentDir']
+                ,isset($options['docRoot']) ? $options['docRoot'] : $_SERVER['DOCUMENT_ROOT']
+                ,isset($options['symlinks']) ? $options['symlinks'] : array()
+            );
+            $content = "/* Minify_CSS_UriRewriter::\$debugText\n\n" 
+                     . Minify_CSS_UriRewriter::$debugText . "*/\n"
+                     . $content;
+        }
+        
+        return $content;
+    }
+    
+    /**
+     * Is the parser within a C-style comment at the end of this line?
+     *
+     * @param string $line current line of code
+     * 
+     * @param bool $inComment was the parser in a comment at the
+     * beginning of the line?
+     * 
+     * @return bool
+     */
+    private static function _eolInComment($line, $inComment)
+    {
+        while (strlen($line)) {
+            $search = $inComment
+                ? '*/'
+                : '/*';
+            $pos = strpos($line, $search);
+            if (false === $pos) {
+                return $inComment;
+            } else {
+                if ($pos == 0
+                    || ($inComment
+                        ? substr($line, $pos, 3)
+                        : substr($line, $pos-1, 3)) != '*/*')
+                {
+                        $inComment = ! $inComment;
+                }
+                $line = substr($line, $pos + 2);
+            }
+        }
+        return $inComment;
+    }
+    
+    /**
+     * Prepend a comment (or note) to the given line
+     *
+     * @param string $line current line of code
+     *
+     * @param string $note content of note/comment
+     * 
+     * @param bool $inComment was the parser in a comment at the
+     * beginning of the line?
+     *
+     * @param int $padTo minimum width of comment
+     * 
+     * @return string
+     */
+    private static function _addNote($line, $note, $inComment, $padTo)
+    {
+        return $inComment
+            ? '/* ' . str_pad($note, $padTo, ' ', STR_PAD_RIGHT) . ' *| ' . $line
+            : '/* ' . str_pad($note, $padTo, ' ', STR_PAD_RIGHT) . ' */ ' . $line;
+    }
+}
Index: moodle/lib/minify/lib/Minify/Logger.php
--- moodle/lib/minify/lib/Minify/Logger.php No Base Revision
+++ moodle/lib/minify/lib/Minify/Logger.php Locally New
@@ -0,0 +1,45 @@
+<?php
+/**
+ * Class Minify_Logger  
+ * @package Minify
+ */
+
+/** 
+ * Message logging class
+ * 
+ * @package Minify
+ * @author Stephen Clay <steve@mrclay.org>
+ */
+class Minify_Logger {
+
+    /**
+     * Set logger object. 
+     *
+     * The object should have a method "log" that accepts a value as 1st argument and
+     * an optional string label as the 2nd.
+     *
+     * @param mixed $obj or a "falsey" value to disable
+     * @return null
+     */
+    public static function setLogger($obj = null) {
+        self::$_logger = $obj
+            ? $obj
+            : null;
+    }
+    
+    /**
+     * Pass a message to the logger (if set)
+     *
+     * @param string $msg message to log
+     * @return null
+     */
+    public static function log($msg, $label = 'Minify') {
+        if (! self::$_logger) return;
+        self::$_logger->log($msg, $label);
+    }
+    
+    /**
+     * @var mixed logger object (like FirePHP) or null (i.e. no logger available)
+     */
+    private static $_logger = null;
+}
Index: moodle/lib/minify/lib/Minify/Packer.php
--- moodle/lib/minify/lib/Minify/Packer.php No Base Revision
+++ moodle/lib/minify/lib/Minify/Packer.php Locally New
@@ -0,0 +1,37 @@
+<?php
+/**
+ * Class Minify_Packer
+ *
+ * To use this class you must first download the PHP port of Packer
+ * and place the file "class.JavaScriptPacker.php" in /lib (or your
+ * include_path). 
+ * @link http://joliclic.free.fr/php/javascript-packer/en/
+ *
+ * Be aware that, as long as HTTP encoding is used, scripts minified with JSMin
+ * will provide better client-side performance, as they need not be unpacked in
+ * client-side code.
+ * 
+ * @package Minify  
+ */
+
+if (false === (@include 'class.JavaScriptPacker.php')) {
+    trigger_error(
+        'The script "class.JavaScriptPacker.php" is required. Please see: http:'
+        .'//code.google.com/p/minify/source/browse/trunk/min/lib/Minify/Packer.php'
+        ,E_USER_ERROR
+    );
+}
+
+/**
+ * Minify Javascript using Dean Edward's Packer
+ * 
+ * @package Minify
+ */
+class Minify_Packer {
+    public static function minify($code, $options = array())
+    {
+        // @todo: set encoding options based on $options :)
+        $packer = new JavascriptPacker($code, 'Normal', true, false);
+        return trim($packer->pack());
+    }
+}
Index: moodle/lib/minify/lib/Minify/Source.php
--- moodle/lib/minify/lib/Minify/Source.php No Base Revision
+++ moodle/lib/minify/lib/Minify/Source.php Locally New
@@ -0,0 +1,187 @@
+<?php
+/**
+ * Class Minify_Source  
+ * @package Minify
+ */
+
+/** 
+ * A content source to be minified by Minify. 
+ * 
+ * This allows per-source minification options and the mixing of files with
+ * content from other sources.
+ * 
+ * @package Minify
+ * @author Stephen Clay <steve@mrclay.org>
+ */
+class Minify_Source {
+
+    /**
+     * @var int time of last modification
+     */
+    public $lastModified = null;
+    
+    /**
+     * @var callback minifier function specifically for this source.
+     */
+    public $minifier = null;
+    
+    /**
+     * @var array minification options specific to this source.
+     */
+    public $minifyOptions = null;
+
+    /**
+     * @var string full path of file
+     */
+    public $filepath = null;
+    
+    /**
+     * @var string HTTP Content Type (Minify requires one of the constants Minify::TYPE_*)
+     */
+    public $contentType = null;
+    
+    /**
+     * Create a Minify_Source
+     * 
+     * In the $spec array(), you can either provide a 'filepath' to an existing
+     * file (existence will not be checked!) or give 'id' (unique string for 
+     * the content), 'content' (the string content) and 'lastModified' 
+     * (unixtime of last update).
+     * 
+     * As a shortcut, the controller will replace "//" at the beginning
+     * of a filepath with $_SERVER['DOCUMENT_ROOT'] . '/'.
+     *
+     * @param array $spec options
+     */
+    public function __construct($spec)
+    {
+        if (isset($spec['filepath'])) {
+            if (0 === strpos($spec['filepath'], '//')) {
+                $spec['filepath'] = $_SERVER['DOCUMENT_ROOT'] . substr($spec['filepath'], 1);
+            }
+            $segments = explode('.', $spec['filepath']);
+            $ext = strtolower(array_pop($segments));
+            switch ($ext) {
+            case 'js'   : $this->contentType = 'application/x-javascript';
+                          break;
+            case 'css'  : $this->contentType = 'text/css';
+                          break;
+            case 'htm'  : // fallthrough
+            case 'html' : $this->contentType = 'text/html';
+                          break;
+            }
+            $this->filepath = $spec['filepath'];
+            $this->_id = $spec['filepath'];
+            $this->lastModified = filemtime($spec['filepath'])
+                // offset for Windows uploaders with out of sync clocks
+                + round(Minify::$uploaderHoursBehind * 3600);
+        } elseif (isset($spec['id'])) {
+            $this->_id = 'id::' . $spec['id'];
+            if (isset($spec['content'])) {
+                $this->_content = $spec['content'];
+            } else {
+                $this->_getContentFunc = $spec['getContentFunc'];
+            }
+            $this->lastModified = isset($spec['lastModified'])
+                ? $spec['lastModified']
+                : time();
+        }
+        if (isset($spec['contentType'])) {
+            $this->contentType = $spec['contentType'];
+        }
+        if (isset($spec['minifier'])) {
+            $this->minifier = $spec['minifier'];
+        }
+        if (isset($spec['minifyOptions'])) {
+            $this->minifyOptions = $spec['minifyOptions'];
+        }
+    }
+    
+    /**
+     * Get content
+     *
+     * @return string
+     */
+    public function getContent()
+    {
+        $content = (null !== $this->filepath)
+            ? file_get_contents($this->filepath)
+            : ((null !== $this->_content)
+                ? $this->_content
+                : call_user_func($this->_getContentFunc, $this->_id)
+            );
+        // remove UTF-8 BOM if present
+        return (pack("CCC",0xef,0xbb,0xbf) === substr($content, 0, 3))
+            ? substr($content, 3)
+            : $content;
+    }
+    
+    /**
+     * Get id
+     *
+     * @return string
+     */
+    public function getId()
+    {
+        return $this->_id;
+    }
+    
+    /**
+     * Verifies a single minification call can handle all sources
+     *
+     * @param array $sources Minify_Source instances
+     * 
+     * @return bool true iff there no sources with specific minifier preferences.
+     */
+    public static function haveNoMinifyPrefs($sources)
+    {
+        foreach ($sources as $source) {
+            if (null !== $source->minifier
+                || null !== $source->minifyOptions) {
+                return false;
+            }
+        }
+        return true;
+    }
+    
+    /**
+     * Get unique string for a set of sources
+     *
+     * @param array $sources Minify_Source instances
+     * 
+     * @return string
+     */
+    public static function getDigest($sources)
+    {
+        foreach ($sources as $source) {
+            $info[] = array(
+                $source->_id, $source->minifier, $source->minifyOptions
+            );
+        }
+        return md5(serialize($info));
+    }
+    
+    /**
+     * Get content type from a group of sources
+     * 
+     * This is called if the user doesn't pass in a 'contentType' options  
+     * 
+     * @param array $sources Minify_Source instances
+     * 
+     * @return string content type. e.g. 'text/css'
+     */
+    public static function getContentType($sources)
+    {
+        foreach ($sources as $source) {
+            if ($source->contentType !== null) {
+                return $source->contentType;
+            }
+        }
+        return 'text/plain';
+    }
+    
+    protected $_content = null;
+    protected $_getContentFunc = null;
+    protected $_id = null;
+}
+
Index: moodle/lib/minify/lib/Minify/YUICompressor.php
--- moodle/lib/minify/lib/Minify/YUICompressor.php No Base Revision
+++ moodle/lib/minify/lib/Minify/YUICompressor.php Locally New
@@ -0,0 +1,139 @@
+<?php
+/**
+ * Class Minify_YUICompressor 
+ * @package Minify
+ */
+
+/**
+ * Compress Javascript/CSS using the YUI Compressor
+ * 
+ * You must set $jarFile and $tempDir before calling the minify functions.
+ * Also, depending on your shell's environment, you may need to specify
+ * the full path to java in $javaExecutable or use putenv() to setup the
+ * Java environment.
+ * 
+ * <code>
+ * Minify_YUICompressor::$jarFile = '/path/to/yuicompressor-2.3.5.jar';
+ * Minify_YUICompressor::$tempDir = '/tmp';
+ * $code = Minify_YUICompressor::minifyJs(
+ *   $code
+ *   ,array('nomunge' => true, 'line-break' => 1000)
+ * );
+ * </code>
+ * 
+ * @todo unit tests, $options docs
+ * 
+ * @package Minify
+ * @author Stephen Clay <steve@mrclay.org>
+ */
+class Minify_YUICompressor {
+
+    /**
+     * Filepath of the YUI Compressor jar file. This must be set before
+     * calling minifyJs() or minifyCss().
+     *
+     * @var string
+     */
+    public static $jarFile = null;
+    
+    /**
+     * Writable temp directory. This must be set before calling minifyJs()
+     * or minifyCss().
+     *
+     * @var string
+     */
+    public static $tempDir = null;
+    
+    /**
+     * Filepath of "java" executable (may be needed if not in shell's PATH)
+     *
+     * @var string
+     */
+    public static $javaExecutable = 'java';
+    
+    /**
+     * Minify a Javascript string
+     * 
+     * @param string $js
+     * 
+     * @param array $options (verbose is ignored)
+     * 
+     * @see http://www.julienlecomte.net/yuicompressor/README
+     * 
+     * @return string 
+     */
+    public static function minifyJs($js, $options = array())
+    {
+        return self::_minify('js', $js, $options);
+    }
+    
+    /**
+     * Minify a CSS string
+     * 
+     * @param string $css
+     * 
+     * @param array $options (verbose is ignored)
+     * 
+     * @see http://www.julienlecomte.net/yuicompressor/README
+     * 
+     * @return string 
+     */
+    public static function minifyCss($css, $options = array())
+    {
+        return self::_minify('css', $css, $options);
+    }
+    
+    private static function _minify($type, $content, $options)
+    {
+        self::_prepare();
+        if (! ($tmpFile = tempnam(self::$tempDir, 'yuic_'))) {
+            throw new Exception('Minify_YUICompressor : could not create temp file.');
+        }
+        file_put_contents($tmpFile, $content);
+        exec(self::_getCmd($options, $type, $tmpFile), $output);
+        unlink($tmpFile);
+        return implode("\n", $output);
+    }
+    
+    private static function _getCmd($userOptions, $type, $tmpFile)
+    {
+        $o = array_merge(
+            array(
+                'charset' => ''
+                ,'line-break' => 5000
+                ,'type' => $type
+                ,'nomunge' => false
+                ,'preserve-semi' => false
+                ,'disable-optimizations' => false
+            )
+            ,$userOptions
+        );
+        $cmd = self::$javaExecutable . ' -jar ' . escapeshellarg(self::$jarFile)
+             . " --type {$type}"
+             . (preg_match('/^[a-zA-Z\\-]+$/', $o['charset']) 
+                ? " --charset {$o['charset']}" 
+                : '')
+             . (is_numeric($o['line-break']) && $o['line-break'] >= 0
+                ? ' --line-break ' . (int)$o['line-break']
+                : '');
+        if ($type === 'js') {
+            foreach (array('nomunge', 'preserve-semi', 'disable-optimizations') as $opt) {
+                $cmd .= $o[$opt] 
+                    ? " --{$opt}"
+                    : '';
+            }
+        }
+        return $cmd . ' ' . escapeshellarg($tmpFile);
+    }
+    
+    private static function _prepare()
+    {
+        if (! is_file(self::$jarFile) 
+            || ! is_dir(self::$tempDir)
+            || ! is_writable(self::$tempDir)
+        ) {
+            throw new Exception('Minify_YUICompressor : $jarFile and $tempDir must be set.');
+        }
+    }
+}
+
Index: moodle/lib/minify/lib/Solar/Dir.php
--- moodle/lib/minify/lib/Solar/Dir.php No Base Revision
+++ moodle/lib/minify/lib/Solar/Dir.php Locally New
@@ -0,0 +1,199 @@
+<?php
+/**
+ * 
+ * Utility class for static directory methods.
+ * 
+ * @category Solar
+ * 
+ * @package Solar
+ * 
+ * @author Paul M. Jones <pmjones@solarphp.com>
+ * 
+ * @license http://opensource.org/licenses/bsd-license.php BSD
+ * 
+ * @version $Id: Dir.php 2926 2007-11-09 16:25:44Z pmjones $
+ * 
+ */
+class Solar_Dir {
+    
+    /**
+     * 
+     * The OS-specific temporary directory location.
+     * 
+     * @var string
+     * 
+     */
+    protected static $_tmp;
+    
+    /**
+     * 
+     * Hack for [[php::is_dir() | ]] that checks the include_path.
+     * 
+     * Use this to see if a directory exists anywhere in the include_path.
+     * 
+     * {{code: php
+     *     $dir = Solar_Dir::exists('path/to/dir')
+     *     if ($dir) {
+     *         $files = scandir($dir);
+     *     } else {
+     *         echo "Not found in the include-path.";
+     *     }
+     * }}
+     * 
+     * @param string $dir Check for this directory in the include_path.
+     * 
+     * @return mixed If the directory exists in the include_path, returns the
+     * absolute path; if not, returns boolean false.
+     * 
+     */
+    public static function exists($dir)
+    {
+        // no file requested?
+        $dir = trim($dir);
+        if (! $dir) {
+            return false;
+        }
+        
+        // using an absolute path for the file?
+        // dual check for Unix '/' and Windows '\',
+        // or Windows drive letter and a ':'.
+        $abs = ($dir[0] == '/' || $dir[0] == '\\' || $dir[1] == ':');
+        if ($abs && is_dir($dir)) {
+            return $dir;
+        }
+        
+        // using a relative path on the file
+        $path = explode(PATH_SEPARATOR, ini_get('include_path'));
+        foreach ($path as $base) {
+            // strip Unix '/' and Windows '\'
+            $target = rtrim($base, '\\/') . DIRECTORY_SEPARATOR . $dir;
+            if (is_dir($target)) {
+                return $target;
+            }
+        }
+        
+        // never found it
+        return false;
+    }
+    
+    /**
+     * 
+     * "Fixes" a directory string for the operating system.
+     * 
+     * Use slashes anywhere you need a directory separator. Then run the
+     * string through fixdir() and the slashes will be converted to the
+     * proper separator (for example '\' on Windows).
+     * 
+     * Always adds a final trailing separator.
+     * 
+     * @param string $dir The directory string to 'fix'.
+     * 
+     * @return string The "fixed" directory string.
+     * 
+     */
+    public static function fix($dir)
+    {
+        $dir = str_replace('/', DIRECTORY_SEPARATOR, $dir);
+        return rtrim($dir, DIRECTORY_SEPARATOR) . DIRECTORY_SEPARATOR;
+    }
+    
+    /**
+     * 
+     * Convenience method for dirname() and higher-level directories.
+     * 
+     * @param string $file Get the dirname() of this file.
+     * 
+     * @param int $up Move up in the directory structure this many 
+     * times, default 0.
+     * 
+     * @return string The dirname() of the file.
+     * 
+     */
+    public static function name($file, $up = 0)
+    {
+        $dir = dirname($file);
+        while ($up --) {
+            $dir = dirname($dir);
+        }
+        return $dir;
+    }
+    
+    /**
+     * 
+     * Returns the OS-specific directory for temporary files.
+     * 
+     * @param string $sub Add this subdirectory to the returned temporary
+     * directory name.
+     * 
+     * @return string The temporary directory path.
+     * 
+     */
+    public static function tmp($sub = '')
+    {
+        // find the tmp dir if needed
+        if (! Solar_Dir::$_tmp) {
+            
+            // use the system if we can
+            if (function_exists('sys_get_temp_dir')) {
+                $tmp = sys_get_temp_dir();
+            } else {
+                $tmp = Solar_Dir::_tmp();
+            }
+            
+            // remove trailing separator and save
+            Solar_Dir::$_tmp = rtrim($tmp, DIRECTORY_SEPARATOR);
+        }
+        
+        // do we have a subdirectory request?
+        $sub = trim($sub);
+        if ($sub) {
+            // remove leading and trailing separators, and force exactly
+            // one trailing separator
+            $sub = trim($sub, DIRECTORY_SEPARATOR)
+                 . DIRECTORY_SEPARATOR;
+        }
+        
+        return Solar_Dir::$_tmp . DIRECTORY_SEPARATOR . $sub;
+    }
+    
+    /**
+     * 
+     * Returns the OS-specific temporary directory location.
+     * 
+     * @return string The temp directory path.
+     * 
+     */
+    protected static function _tmp()
+    {
+        // non-Windows system?
+        if (strtolower(substr(PHP_OS, 0, 3)) != 'win') {
+            $tmp = empty($_ENV['TMPDIR']) ? getenv('TMPDIR') : $_ENV['TMPDIR'];
+            if ($tmp) {
+                return $tmp;
+            } else {
+                return '/tmp';
+            }
+        }
+        
+        // Windows 'TEMP'
+        $tmp = empty($_ENV['TEMP']) ? getenv('TEMP') : $_ENV['TEMP'];
+        if ($tmp) {
+            return $tmp;
+        }
+    
+        // Windows 'TMP'
+        $tmp = empty($_ENV['TMP']) ? getenv('TMP') : $_ENV['TMP'];
+        if ($tmp) {
+            return $tmp;
+        }
+    
+        // Windows 'windir'
+        $tmp = empty($_ENV['windir']) ? getenv('windir') : $_ENV['windir'];
+        if ($tmp) {
+            return $tmp;
+        }
+    
+        // final fallback for Windows
+        return getenv('SystemRoot') . '\\temp';
+    }
+}
Index: moodle/lib/minify/readme_moodle.txt
--- moodle/lib/minify/readme_moodle.txt No Base Revision
+++ moodle/lib/minify/readme_moodle.txt Locally New
@@ -0,0 +1,17 @@
+Description of Minify 2.1.3 import into Moodle
+
+Notes:
+ * Uses are required to add minify/lib to the include path
+ * We ever actually use things within minify/lib/*
+
+Usage:
+ * /lib/javascript.php
+ * /theme/javascript.php
+ * /theme/styles.php
+
+Changes:
+ * Removed index.php - Is an unused entry point program and could potentially
+   pose a security risk in the future.
+ * Removed .htaccess - Not needed
+ * Changed config.php - Changed settings to Moodle specific settings incase this
+   ever gets accidentally used.
Index: moodle/lib/minify/utils.php
--- moodle/lib/minify/utils.php No Base Revision
+++ moodle/lib/minify/utils.php Locally New
@@ -0,0 +1,90 @@
+<?php
+/**
+ * Utility functions for generating group URIs in HTML files
+ *
+ * Before including this file, /min/lib must be in your include_path.
+ * 
+ * @package Minify
+ */
+
+require_once 'Minify/Build.php';
+
+
+/**
+ * Get a timestamped URI to a minified resource using the default Minify install
+ *
+ * <code>
+ * <link rel="stylesheet" type="text/css" href="<?php echo Minify_groupUri('css'); ?>" />
+ * <script type="text/javascript" src="<?php echo Minify_groupUri('js'); ?>"></script>
+ * </code>
+ *
+ * If you do not want ampersands as HTML entities, set Minify_Build::$ampersand = "&" 
+ * before using this function.
+ *
+ * @param string $group a key from groupsConfig.php
+ * @param boolean $forceAmpersand (default false) Set to true if the RewriteRule
+ * directives in .htaccess are functional. This will remove the "?" from URIs, making them
+ * more cacheable by proxies.
+ * @return string
+ */ 
+function Minify_groupUri($group, $forceAmpersand = false)
+{
+    $path = $forceAmpersand
+        ? "/g={$group}"
+        : "/?g={$group}";
+    return _Minify_getBuild($group)->uri(
+        '/' . basename(dirname(__FILE__)) . $path
+        ,$forceAmpersand
+    );
+}
+
+
+/**
+ * Get the last modification time of the source js/css files used by Minify to
+ * build the page.
+ * 
+ * If you're caching the output of Minify_groupUri(), you'll want to rebuild 
+ * the cache if it's older than this timestamp.
+ * 
+ * <code>
+ * // simplistic HTML cache system
+ * $file = '/path/to/cache/file';
+ * if (! file_exists($file) || filemtime($file) < Minify_groupsMtime(array('js', 'css'))) {
+ *     // (re)build cache
+ *     $page = buildPage(); // this calls Minify_groupUri() for js and css
+ *     file_put_contents($file, $page);
+ *     echo $page;
+ *     exit();
+ * }
+ * readfile($file);
+ * </code>
+ *
+ * @param array $groups an array of keys from groupsConfig.php
+ * @return int Unix timestamp of the latest modification
+ */ 
+function Minify_groupsMtime($groups)
+{
+    $max = 0;
+    foreach ((array)$groups as $group) {
+        $max = max($max, _Minify_getBuild($group)->lastModified);
+    }
+    return $max;
+}
+
+/**
+ * @param string $group a key from groupsConfig.php
+ * @return Minify_Build
+ * @private
+ */
+function _Minify_getBuild($group)
+{
+    static $builds = array();
+    static $gc = false;
+    if (false === $gc) {
+        $gc = (require dirname(__FILE__) . '/groupsConfig.php');
+    }
+    if (! isset($builds[$group])) {
+        $builds[$group] = new Minify_Build($gc[$group]);
+    }
+    return $builds[$group];
+}
Index: moodle/lib/outputlib.php
--- moodle/lib/outputlib.php Base (1.135)
+++ moodle/lib/outputlib.php Locally Modified (Based On 1.135)
@@ -658,37 +658,19 @@
     }
 
     /**
-     * Returns the content of the one huge CSS merged from all style sheets.
-     * @return string
+     * Returns an array of organised CSS files required for this output
+     * @return array
      */
-    public function css_content() {
-        global $CFG;
+    public function css_files() {
+        $cssfiles = array('plugins'=>array(), 'parents'=>array(), 'theme'=>array());
 
-        $css = array('plugins'=>array(), 'parents'=>array(), 'theme'=>array());
-
         // get all plugin sheets
-        $excludes = null;
-        if (is_array($this->plugins_exclude_sheets) or $this->plugins_exclude_sheets === true) {
-            $excludes = $this->plugins_exclude_sheets;
-        } else {
-            foreach ($this->parent_configs as $parent_config) { // the immediate parent first, base last
-                if (!isset($parent_config->plugins_exclude_sheets)) {
-                    continue;
-                }
-                if (is_array($parent_config->plugins_exclude_sheets) or $parent_config->plugins_exclude_sheets === true) {
-                    $excludes = $parent_config->plugins_exclude_sheets;
-                    break;
-                }
-            }
-        }
+        $excludes = $this->resolve_excludes('plugins_exclude_sheets');
         if ($excludes !== true) {
             foreach (get_plugin_types() as $type=>$unused) {
-                if ($type === 'theme') {
+                if ($type === 'theme' || (!empty($excludes[$type]) and $excludes[$type] === true)) {
                     continue;
                 }
-                if (!empty($excludes[$type]) and $excludes[$type] === true) {
-                    continue;
-                }
                 $plugins = get_plugin_list($type);
                 foreach ($plugins as $plugin=>$fulldir) {
                     if (!empty($excludes[$type]) and is_array($excludes[$type])
@@ -699,45 +681,24 @@
                     $plugincontent = '';
                     $sheetfile = "$fulldir/styles.css";
                     if (is_readable($sheetfile)) {
-                        $plugincontent .= "/*** Standard plugin $type/$plugin ***/\n\n";
-                        $plugincontent .= file_get_contents($sheetfile);
+                        $cssfiles['plugins'][$type.'_'.$plugin] = $sheetfile;
                     }
                     $sheetthemefile = "$fulldir/styles_{$this->name}.css";
                     if (is_readable($sheetthemefile)) {
-                        $plugincontent .= "\n/*** Standard plugin $type/$plugin for the {$this->name} theme ***/\n\n";
-                        $plugincontent .= file_get_contents($sheetthemefile);
+                        $cssfiles['plugins'][$type.'_'.$plugin.'_'.$this->name] = $sheetthemefile;
                     }
-                    if (!empty($plugincontent)) {
-                        $css['plugins'][$type.'_'.$plugin] = $this->post_process($plugincontent);
                     }
                 }
             }
-        }
 
         // find out wanted parent sheets
-        $excludes = null;
-        if (is_array($this->parents_exclude_sheets) or $this->parents_exclude_sheets === true) {
-            $excludes = $this->parents_exclude_sheets;
-        } else {
-            foreach ($this->parent_configs as $parent_config) { // the immediate parent first, base last
-                if (!isset($parent_config->parents_exclude_sheets)) {
-                    continue;
-                }
-                if (is_array($parent_config->parents_exclude_sheets) or $parent_config->parents_exclude_sheets === true) {
-                    $excludes = $parent_config->parents_exclude_sheets;
-                    break;
-                }
-            }
-        }
+        $excludes = $this->resolve_excludes('parents_exclude_sheets');
         if ($excludes !== true) {
             foreach (array_reverse($this->parent_configs) as $parent_config) { // base first, the immediate parent last
                 $parent = $parent_config->name;
-                if (empty($parent_config->sheets)) {
+                if (empty($parent_config->sheets) || (!empty($excludes[$parent]) and $excludes[$parent] === true)) {
                     continue;
                 }
-                if (!empty($excludes[$parent]) and $excludes[$parent] === true) {
-                    continue;
-                }
                 foreach ($parent_config->sheets as $sheet) {
                     if (!empty($excludes[$parent]) and is_array($excludes[$parent])
                         and in_array($sheet, $excludes[$parent])) {
@@ -745,7 +706,7 @@
                     }
                     $sheetfile = "$parent_config->dir/style/$sheet.css";
                     if (is_readable($sheetfile)) {
-                        $css['parents'][$parent][$sheet] = $this->post_process("/*** Parent theme $parent/style/$sheet.css ***/\n\n" . file_get_contents($sheetfile));
+                        $cssfiles['parents'][$parent][$sheet] = $sheetfile;
                     }
                 }
             }
@@ -756,15 +717,46 @@
             foreach ($this->sheets as $sheet) {
                 $sheetfile = "$this->dir/style/$sheet.css";
                 if (is_readable($sheetfile)) {
-                    $css['theme'][$sheet] = $this->post_process("/*** This theme $this->name/style/$sheet ***/\n\n" . file_get_contents($sheetfile));
+                    $cssfiles['theme'][$sheet] = $sheetfile;
                 }
             }
         }
 
+        return $cssfiles;
+    }
+
+    /**
+     * Returns the content of the one huge CSS merged from all style sheets.
+     * @return string
+     */
+    public function css_content() {
+        $css = $this->css_files_get_contents($this->css_files(), array());
         return $css;
     }
 
+    /**
+     * Given an array of file paths or a single file path loads the contents of
+     * the CSS file, processes it then returns it in the same structure it was given.
+     *
+     * Can be used recursively on the results of {@see css_files}
+     *
+     * @param array|string $file An array of file paths or a single file path
+     * @param array $keys An array of previous array keys [recusive addition]
+     * @return The converted array or the contents of the single file ($file type)
+     */
+    protected function css_files_get_contents($file, array $keys) {
+        if (is_array($file)) {
+            foreach ($file as $key=>$f) {
+                $file[$key] = $this->css_files_get_contents($f, array_merge($keys, array($key)));
+            }
+            return $file;
+        } else {
+            $comment = '/** Path: '.implode(' ', $keys).' **/'."\n";
+            return $comment.$this->post_process(file_get_contents($file));
+        }
+    }
 
+
     /**
      * Get the javascript URL of this theme
      * @param bool $inhead true means haed url, false means footer
@@ -780,30 +772,16 @@
         return new moodle_url($CFG->httpswwwroot.'/theme/javascript.php', $params);
     }
 
-    /**
-     * Returns the content of the one huge javascript file merged from all theme javascript files.
-     * @param bool $inhead
-     * @return string
-     */
-    public function javascript_content($type) {
-        $type = ($type === 'footer') ? 'javascripts_footer' : 'javascripts';
+    public function javascript_files($type) {
+        if ($type === 'footer') {
+            $type = 'javascripts_footer';
+        } else {
+            $type = 'javascript';
+        }
 
         $js = array();
         // find out wanted parent javascripts
-        $excludes = null;
-        if (is_array($this->parents_exclude_javascripts) or $this->parents_exclude_javascripts === true) {
-            $excludes = $this->parents_exclude_javascripts;
-        } else {
-            foreach ($this->parent_configs as $parent_config) { // the immediate parent first, base last
-                if (!isset($parent_config->parents_exclude_javascripts)) {
-                    continue;
-                }
-                if (is_array($parent_config->parents_exclude_javascripts) or $parent_config->parents_exclude_javascripts === true) {
-                    $excludes = $parent_config->parents_exclude_javascripts;
-                    break;
-                }
-            }
-        }
+        $excludes = $this->resolve_excludes('parents_exclude_javascripts');
         if ($excludes !== true) {
             foreach (array_reverse($this->parent_configs) as $parent_config) { // base first, the immediate parent last
                 $parent = $parent_config->name;
@@ -820,7 +798,7 @@
                     }
                     $javascriptfile = "$parent_config->dir/javascript/$javascript.js";
                     if (is_readable($javascriptfile)) {
-                        $js[] = "/*** Parent theme $parent/javascript/$javascript.js ***/\n\n" . file_get_contents($javascriptfile);
+                        $js[] = $javascriptfile;
                     }
                 }
             }
@@ -831,15 +809,54 @@
             foreach ($this->$type as $javascript) {
                 $javascriptfile = "$this->dir/javascript/$javascript.js";
                 if (is_readable($javascriptfile)) {
-                    $js[] = "/*** This theme $this->name/javascript/$javascript.js ***/\n\n" . file_get_contents($javascriptfile);
+                    $js[] = $javascriptfile;
                 }
             }
         }
 
-        return implode("\n\n", $js);
+        return $js;
     }
 
-    protected function post_process($css) {
+    /**
+     * Resolves an exclude setting to the theme's setting is applicable or the
+     * setting of its closest parent.
+     *
+     * @param string $variable The name of the setting the exclude setting to resolve
+     * @return mixed
+     */
+    protected function resolve_excludes($variable, $default=null) {
+        $setting = $default;
+        if (is_array($this->{$variable}) or $this->{$variable} === true) {
+            $setting = $this->{$variable};
+        } else {
+            foreach ($this->parent_configs as $parent_config) { // the immediate parent first, base last
+                if (!isset($parent_config->{$variable})) {
+                    continue;
+                }
+                if (is_array($parent_config->{$variable}) or $parent_config->{$variable} === true) {
+                    $setting = $parent_config->{$variable};
+                    break;
+                }
+            }
+        }
+        return $setting;
+    }
+
+    /**
+     * Returns the content of the one huge javascript file merged from all theme javascript files.
+     * @param bool $inhead
+     * @return string
+     */
+    public function javascript_content($type) {
+        $jsfiles = $this->javascript_files($type);
+        $js = '';
+        foreach ($jsfiles as $jsfile) {
+            $js .= file_get_contents($jsfile)."\n";
+        }
+        return $js;
+    }
+
+    public function post_process($css) {
         global $CFG;
 
         // now resolve all image locations
Index: moodle/lib/thirdpartylibs.xml
--- moodle/lib/thirdpartylibs.xml Base (1.14)
+++ moodle/lib/thirdpartylibs.xml Locally Modified (Based On 1.14)
@@ -71,6 +71,13 @@
     <licenseversion>2.0+</licenseversion>
   </library>
   <library>
+    <location>minify</location>
+    <name>Minify</name>
+    <license>BSD</license>
+    <version>2.1.3</version>
+    <licenseversion></licenseversion>
+  </library>
+  <library>
     <location>mp3player</location>
     <name></name>
     <license></license>
Index: moodle/theme/javascript.php
--- moodle/theme/javascript.php Base (1.1)
+++ moodle/theme/javascript.php Locally Modified (Based On 1.1)
@@ -66,19 +66,20 @@
 define('NO_UPGRADE_CHECK', true);  // Ignore upgrade check
 
 require("$CFG->dirroot/lib/setup.php");
+// setup include path
+set_include_path($CFG->libdir . '/minify/lib' . PATH_SEPARATOR . get_include_path());
+require_once('Minify.php');
 
 $theme = theme_config::load($themename);
 
-$js = $theme->javascript_content($type);
 if ($rev > -1) {
     check_dir_exists(dirname($candidate), true, true);
     $fp = fopen($candidate, 'w');
-    fwrite($fp, $js);
+    fwrite($fp, minify($theme->javascript_files($type)));
     fclose($fp);
     send_cached_js($candidate);
-
 } else {
-    send_uncached_js($js);
+    send_uncached_js($theme->javascript_content($type));
 }
 
 //=================================================================================
@@ -115,3 +116,29 @@
     echo $js;
     die;
 }
+
+function minify($files) {
+    global $CFG;
+
+    if (0 === stripos(PHP_OS, 'win')) {
+        Minify::setDocRoot(); // IIS may need help
+    }
+    Minify::setCache('', true);
+
+    $options = array(
+        'bubbleCssImports' => false,
+        // Don't gzip content we just want text for storage
+        'encodeOutput' => false,
+        // Maximum age to cache, not used but required
+        'maxAge' => 1800,
+        // The files to minify
+        'files' => $files,
+        // Turn orr URI rewriting
+        'rewriteCssUris' => false,
+        // This returns the CSS rather than echoing it for display
+        'quiet' => true
+    );
+
+    $result = Minify::serve('Files', $options);
+    return $result['content'];
+}
Index: moodle/theme/styles.php
--- moodle/theme/styles.php Base (1.11)
+++ moodle/theme/styles.php Locally Modified (Based On 1.11)
@@ -70,6 +70,9 @@
 define('NO_UPGRADE_CHECK', true);  // Ignore upgrade check
 
 require("$CFG->dirroot/lib/setup.php");
+// setup include path
+set_include_path($CFG->libdir . '/minify/lib' . PATH_SEPARATOR . get_include_path());
+require_once('Minify.php');
 
 $theme = theme_config::load($themename);
 
@@ -77,36 +80,35 @@
     $css = $theme->editor_css_content();
     store_css($candidatesheet, $css);
 } else {
-    $css = $theme->css_content();
+    $css = $theme->css_files();
+    $allfiles = array();
     foreach ($css as $key=>$value) {
-        $sheet = '';
+        $cssfiles = array();
         foreach($value as $val) {
             if (is_array($val)) {
                 foreach ($val as $k=>$v) {
-                    $sheet .= compress_css($v)."\n";
+                    $cssfiles[] = $v;
                 }
             } else {
-                $sheet .= compress_css($val)."\n";
+                $cssfiles[] = $val;
             }
         }
-        $css[$key] = $sheet;
         $cssfile = "$CFG->dataroot/cache/theme/$themename/css/$key.css";
-        store_css($cssfile, $sheet);
+        store_css($theme, $cssfile, $cssfiles);
+        $allfiles = array_merge($allfiles, $cssfiles);
     }
-    $css = implode('', $css);
     $cssfile = "$CFG->dataroot/cache/theme/$themename/css/all.css";
-    store_css($cssfile, $css);
+    store_css($theme, $cssfile, $allfiles);
 }
-
 send_cached_css($candidatesheet, $rev);
 
-
 //=================================================================================
 //=== utility functions ==
 // we are not using filelib because we need to fine tune all header
 // parameters to get the best performance.
 
-function store_css($csspath, $css) {
+function store_css(theme_config $theme, $csspath, $cssfiles) {
+    $css = $theme->post_process(minify($cssfiles));
     check_dir_exists(dirname($csspath), true, true);
     $fp = fopen($csspath, 'w');
     fwrite($fp, $css);
@@ -154,21 +156,25 @@
     die;
 }
 
-function compress_css($css) {
-    // remove comments - credit for this regex goes to "reinhold weber"
-    $css = preg_replace('!/\*[^*]*\*+([^/][^*]*\*+)*/!', '', $css);
+function minify($files) {
+    if (0 === stripos(PHP_OS, 'win')) {
+        Minify::setDocRoot(); // IIS may need help
+    }
+    Minify::setCache('', true);
 
-    // replace newlines, tabs, etc.
-    $css = str_replace(array("\r\n", "\r", "\n", "\t"), ' ', $css);
-
-    // replace repeated spaces
-    $css = preg_replace('/ +/', ' ', $css);
-
-    // fix whitespace around separators
-    $css = preg_replace('/ ([;,:\{\}])/', '$1', $css);
-    $css = preg_replace('/([;,:\{\}]) /', '$1', $css);
-
-    $css = str_replace('url (', 'url(', $css);
-
-    return $css;
+    $options = array(
+        'bubbleCssImports' => false,
+        // Don't gzip content we just want text for storage
+        'encodeOutput' => false,
+        // Maximum age to cache, not used but required
+        'maxAge' => (60*60*24*20),
+        // The files to minify
+        'files' => $files,
+        // Turn orr URI rewriting
+        'rewriteCssUris' => false,
+        // This returns the CSS rather than echoing it for display
+        'quiet' => true
+    );
+    $result = Minify::serve('Files', $options);
+    return $result['content'];
 }
