91 lines
2.4 KiB
PHP
91 lines
2.4 KiB
PHP
<?php
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/**
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* Utility functions for generating group URIs in HTML files
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*
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* Before including this file, /min/lib must be in your include_path.
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*
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* @package Minify
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*/
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require_once 'Minify/Build.php';
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/**
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* Get a timestamped URI to a minified resource using the default Minify install
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*
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* <code>
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* <link rel="stylesheet" type="text/css" href="<?php echo Minify_groupUri('css'); ?>" />
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* <script type="text/javascript" src="<?php echo Minify_groupUri('js'); ?>"></script>
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* </code>
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*
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* If you do not want ampersands as HTML entities, set Minify_Build::$ampersand = "&"
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* before using this function.
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*
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* @param string $group a key from groupsConfig.php
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* @param boolean $forceAmpersand (default false) Set to true if the RewriteRule
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* directives in .htaccess are functional. This will remove the "?" from URIs, making them
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* more cacheable by proxies.
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* @return string
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*/
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function Minify_groupUri($group, $forceAmpersand = false)
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{
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$path = $forceAmpersand
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? "/g={$group}"
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: "/?g={$group}";
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return _Minify_getBuild($group)->uri(
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'/' . basename(dirname(__FILE__)) . $path
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,$forceAmpersand
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);
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}
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/**
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* Get the last modification time of the source js/css files used by Minify to
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* build the page.
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*
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* If you're caching the output of Minify_groupUri(), you'll want to rebuild
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* the cache if it's older than this timestamp.
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*
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* <code>
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* // simplistic HTML cache system
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* $file = '/path/to/cache/file';
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* if (! file_exists($file) || filemtime($file) < Minify_groupsMtime(array('js', 'css'))) {
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* // (re)build cache
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* $page = buildPage(); // this calls Minify_groupUri() for js and css
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* file_put_contents($file, $page);
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* echo $page;
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* exit();
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* }
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* readfile($file);
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* </code>
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*
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* @param array $groups an array of keys from groupsConfig.php
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* @return int Unix timestamp of the latest modification
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*/
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function Minify_groupsMtime($groups)
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{
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$max = 0;
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foreach ((array)$groups as $group) {
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$max = max($max, _Minify_getBuild($group)->lastModified);
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}
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return $max;
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}
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/**
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* @param string $group a key from groupsConfig.php
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* @return Minify_Build
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* @private
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*/
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function _Minify_getBuild($group)
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{
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static $builds = array();
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static $gc = false;
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if (false === $gc) {
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$gc = (require dirname(__FILE__) . '/groupsConfig.php');
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}
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if (! isset($builds[$group])) {
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$builds[$group] = new Minify_Build($gc[$group]);
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}
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return $builds[$group];
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}
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