149 lines
4.3 KiB
PHP
Executable File
149 lines
4.3 KiB
PHP
Executable File
<?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, $result_code);
|
|
unlink($tmpFile);
|
|
if ($result_code != 0) {
|
|
throw new Exception('Minify_YUICompressor : YUI compressor execution failed.');
|
|
}
|
|
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('/^[\\da-zA-Z0-9\\-]+$/', $o['charset'])
|
|
? " --charset {$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)) {
|
|
throw new Exception('Minify_YUICompressor : $jarFile('.self::$jarFile.') is not a valid file.');
|
|
}
|
|
if (! is_executable(self::$jarFile)) {
|
|
throw new Exception('Minify_YUICompressor : $jarFile('.self::$jarFile.') is not executable.');
|
|
}
|
|
if (! is_dir(self::$tempDir)) {
|
|
throw new Exception('Minify_YUICompressor : $tempDir('.self::$tempDir.') is not a valid direcotry.');
|
|
}
|
|
if (! is_writable(self::$tempDir)) {
|
|
throw new Exception('Minify_YUICompressor : $tempDir('.self::$tempDir.') is not writable.');
|
|
}
|
|
}
|
|
}
|
|
|