Viewing file:  ClosureCompiler.php (2.62 KB) -rw-rw-rw-
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<?php
class Minify_ClosureCompiler {
protected static $_pathJava = 'java';
protected static $_pathJar = 'compiler.jar';
public static function minify($js, $options = array()) {
$output = null;
self::_execute($options, $js, $output);
return $output;
}
public static function test(&$error) {
try {
Minify_ClosureCompiler::minify('alert("ok");');
$error = 'OK';
return true;
} catch (Exception $exception) {
$error = $exception->getMessage();
return false;
}
}
public static function setPathJava($pathJava) {
self::$_pathJava = $pathJava;
}
public static function setPathJar($pathJar) {
self::$_pathJar = $pathJar;
}
protected static function _execute($options, $input, &$output) {
$cmd = self::_getCmd($options);
$return = self::_run($cmd, $input, $output);
return $return;
}
protected static function _getCmd($options) {
if (!is_file(self::$_pathJava)) {
throw new Exception(sprintf('JAVA executable (%s) is not a valid file.', self::$_pathJava));
}
if (!is_file(self::$_pathJar)) {
throw new Exception(sprintf('JAR file (%s) is not a valid file.', self::$_pathJar));
}
$options = array_merge(array(
'compilation_level' => '',
'formatting' => ''
), $options);
$optionsString = '';
foreach ($options as $option => $value) {
if ($value) {
$optionsString .= sprintf('--%s=%s ', $option, $value);
}
}
$cmd = sprintf('%s -jar %s %s', self::$_pathJava, escapeshellarg(self::$_pathJar), $optionsString);
return $cmd;
}
protected static function _run($cmd, $input, &$output) {
$descriptors = array(
0 => array('pipe', 'r'),
1 => array('pipe', 'w'),
2 => array('pipe', 'w')
);
$pipes = null;
$process = proc_open($cmd, $descriptors, $pipes);
if (!$process) {
throw new Exception(sprintf('Unable to open process (%s).', $cmd));
}
fwrite($pipes[0], $input);
fclose($pipes[0]);
$output = stream_get_contents($pipes[1]);
fclose($pipes[1]);
$error = stream_get_contents($pipes[2]);
fclose($pipes[2]);
$return = proc_close($process);
if ($return != 0) {
throw new Exception(sprintf('Command (%s) execution failed. Error: %s. Return code: %d.', $cmd, $error, $return));
}
return $return;
}
}
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