晋太元中，武陵人捕鱼为业。缘溪行，忘路之远近。忽逢桃花林，夹岸数百步，中无杂树，芳草鲜美，落英缤纷。渔人甚异之，复前行，欲穷其林。 　　林尽水源，便得一山，山有小口，仿佛若有光。便舍船，从口入。初极狭，才通人。复行数十步，豁然开朗。土地平旷，屋舍俨然，有良田、美池、桑竹之属。阡陌交通，鸡犬相闻。其中往来种作，男女衣着，悉如外人。黄发垂髫，并怡然自乐。 　　见渔人，乃大惊，问所从来。具答之。便要还家，设酒杀鸡作食。村中闻有此人，咸来问讯。自云先世避秦时乱，率妻子邑人来此绝境，不复出焉，遂与外人间隔。问今是何世，乃不知有汉，无论魏晋。此人一一为具言所闻，皆叹惋。余人各复延至其家，皆出酒食。停数日，辞去。此中人语云：“不足为外人道也。”(间隔 一作：隔绝) 　　既出，得其船，便扶向路，处处志之。及郡下，诣太守，说如此。太守即遣人随其往，寻向所志，遂迷，不复得路。 　　南阳刘子骥，高尚士也，闻之，欣然规往。未果，寻病终。后遂无问津者。 .
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Directory :  /home/stando/www/wp-content/plugins/w3-total-cache/lib/Minify/Minify/

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Current File : /home/stando/www/wp-content/plugins/w3-total-cache/lib/Minify/Minify/ClosureCompiler.php
<?php
/**
 * Class Minify_ClosureCompiler
 * @package Minify
 */

/**
 * Compress Javascript using the Closure Compiler
 *
 * 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 $javaExecutable or use putenv() to setup the
 * Java environment.
 *
 * <code>
 * Minify_ClosureCompiler::$jarFile = '/path/to/closure-compiler-20120123.jar';
 * Minify_ClosureCompiler::$tempDir = '/tmp';
 * $code = Minify_ClosureCompiler::minify(
 *   $code,
 *   array('compilation_level' => 'SIMPLE_OPTIMIZATIONS')
 * );
 *
 * --compilation_level WHITESPACE_ONLY, SIMPLE_OPTIMIZATIONS, ADVANCED_OPTIMIZATIONS
 *
 * </code>
 *
 * @todo unit tests, $options docs
 * @todo more options support (or should just passthru them all?)
 *
 * @package Minify
 * @author Stephen Clay <steve@mrclay.org>
 * @author Elan Ruusamäe <glen@delfi.ee>
 */
class Minify_ClosureCompiler {

    /**
     * Filepath of the Closure Compiler jar file. This must be set before
     * calling minifyJs().
     *
     * @var string
     */
    public static $jarFile = null;

    /**
     * Writable temp directory. This must be set before calling minifyJs().
     *
     * @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 $options (verbose is ignored)
     *
     * @see https://code.google.com/p/closure-compiler/source/browse/trunk/README
     *
     * @return string
     */
    public static function minify($js, $options = array())
    {
        self::_prepare();
        if (! ($tmpFile = tempnam(self::$tempDir, 'cc_'))) {
            throw new Exception('Minify_ClosureCompiler : could not create temp file.');
        }
        file_put_contents($tmpFile, $js);
        exec(self::_getCmd($options, $tmpFile), $output, $result_code);
        unlink($tmpFile);
        if ($result_code != 0) {
            throw new Exception('Minify_ClosureCompiler : Closure Compiler execution failed.');
        }
        return implode("\n", $output);
    }

    private static function _getCmd($userOptions, $tmpFile)
    {
        $o = array_merge(
            array(
                'charset' => 'utf-8',
                'compilation_level' => 'SIMPLE_OPTIMIZATIONS',
            ),
            $userOptions
        );

 		$javaExecutable = self::$javaExecutable;

        if ( false !== strpos(trim($javaExecutable), ' ') ) {
      		$javaExecutable = '"'.$javaExecutable.'"';
        }

        $cmd = $javaExecutable . ' -jar ' . escapeshellarg(self::$jarFile)
             . (preg_match('/^[\\da-zA-Z0-9\\-]+$/', $o['charset'])
                ? " --charset {$o['charset']}"
                : '');

        foreach (array('compilation_level') as $opt) {
            if ($o[$opt]) {
                $cmd .= " --{$opt} ". escapeshellarg($o[$opt]);
            }
        }
        return $cmd . ' ' . escapeshellarg($tmpFile);
    }

    private static function _prepare()
    {
        if (! is_file(self::$jarFile)) {
            throw new Exception('Minify_ClosureCompiler : $jarFile('.self::$jarFile.') is not a valid file.');
        }
        if (! is_readable(self::$jarFile)) {
            throw new Exception('Minify_ClosureCompiler : $jarFile('.self::$jarFile.') is not readable.');
        }
        if (! is_dir(self::$tempDir)) {
            throw new Exception('Minify_ClosureCompiler : $tempDir('.self::$tempDir.') is not a valid direcotry.');
        }
        if (! is_writable(self::$tempDir)) {
            throw new Exception('Minify_ClosureCompiler : $tempDir('.self::$tempDir.') is not writable.');
        }
    }

    public static function test(&$error) {
        try {
            self::minify('alert("ok");');
            $error = 'OK';

            return true;
        } catch (Exception $exception) {
            $error = $exception->getMessage();

            return false;
        }
    }
}

/* vim:ts=4:sw=4:et */

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