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<?php |
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|
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/** |
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* Class Minify_ClosureCompiler |
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* @package Minify |
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*/ |
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|
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/** |
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* Run Closure Compiler via NailGun |
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* |
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* @package Minify |
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* @author Elan Ruusamäe <[email protected]> |
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* @link https://github.com/martylamb/nailgun |
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*/ |
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class Minify_NailgunClosureCompiler extends Minify_ClosureCompiler |
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{ |
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const NG_SERVER = 'com.martiansoftware.nailgun.NGServer'; |
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const CC_MAIN = 'com.google.javascript.jscomp.CommandLineRunner'; |
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|
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/** |
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* For some reasons Nailgun thinks that it's server |
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* broke the connection and returns 227 instead of 0 |
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* We'll just handle this here instead of fixing |
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* the nailgun client itself. |
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* |
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* It also sometimes breaks on 229 on the devbox. |
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* To complete this whole madness and made future |
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* 'fixes' easier I added this nice little array... |
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* @var array |
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*/ |
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private static $NG_EXIT_CODES = array(0, 227, 229); |
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|
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/** |
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* Filepath of "ng" executable (from Nailgun package) |
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* |
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* @var string |
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*/ |
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public static $ngExecutable = 'ng'; |
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|
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/** |
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* Filepath of the Nailgun jar file. |
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* |
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* @var string |
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*/ |
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public static $ngJarFile; |
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|
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/** |
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* Get command to launch NailGun server. |
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* |
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* @return array |
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*/ |
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protected function getServerCommandLine() |
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{ |
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$this->checkJar(self::$ngJarFile); |
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$this->checkJar(self::$jarFile); |
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|
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$classPath = array( |
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self::$ngJarFile, |
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self::$jarFile, |
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); |
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|
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// The command for the server that should show up in the process list |
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$server = array( |
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self::$javaExecutable, |
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'-server', |
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'-cp', implode(':', $classPath), |
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self::NG_SERVER, |
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); |
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|
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return $server; |
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} |
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|
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/** |
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* @return array |
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* @throws Minify_ClosureCompiler_Exception |
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*/ |
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protected function getCompilerCommandLine() |
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{ |
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$server = array( |
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self::$ngExecutable, |
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escapeshellarg(self::CC_MAIN) |
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); |
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|
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return $server; |
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} |
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|
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/** |
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* @param string $tmpFile |
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* @param array $options |
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* @return string |
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* @throws Minify_ClosureCompiler_Exception |
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*/ |
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protected function compile($tmpFile, $options) |
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{ |
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$this->startServer(); |
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|
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$command = $this->getCommand($options, $tmpFile); |
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|
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return implode("\n", $this->shell($command, self::$NG_EXIT_CODES)); |
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} |
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|
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private function startServer() |
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{ |
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$serverCommand = implode(' ', $this->getServerCommandLine()); |
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$psCommand = $this->shell("ps -o cmd= -C " . self::$javaExecutable); |
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if (in_array($serverCommand, $psCommand, true)) { |
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// already started! |
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return; |
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} |
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|
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$this->shell("$serverCommand </dev/null >/dev/null 2>/dev/null & sleep 10"); |
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} |
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} |
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|
