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Diffstat (limited to 'plugins/Minify/extlib/minify/min/lib/Minify/YUICompressor.php')
-rw-r--r-- | plugins/Minify/extlib/minify/min/lib/Minify/YUICompressor.php | 139 |
1 files changed, 139 insertions, 0 deletions
diff --git a/plugins/Minify/extlib/minify/min/lib/Minify/YUICompressor.php b/plugins/Minify/extlib/minify/min/lib/Minify/YUICompressor.php new file mode 100644 index 000000000..7cb61adbe --- /dev/null +++ b/plugins/Minify/extlib/minify/min/lib/Minify/YUICompressor.php @@ -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.'); + } + } +} + |