Invoke Composer from XP

Composer.class.php

<?php namespace xp\composer;

use util\cmd\Console;
use lang\ClassLoader;

/**
 * XP Composer
 */
class Runner extends \lang\Object {

  /**
   * Entry point
   *
   * @param  string[] args
   * @return int
   */
  public static function main(array $args) {

    // Bootstrap composer
    $resource= \lang\ClassLoader::getDefault()->findResource('composer.phar');
    if (!is('lang.IClassLoader', $resource)) {
      Console::$err->writeLine('*** Cannot find composer.phar in any of ', \lang\ClassLoader::getLoaders());
      return 1;
    }
    require(sprintf(
      'phar://%s/composer.phar/vendor/autoload.php',
      strtr($resource->path, DIRECTORY_SEPARATOR, '/')
    ));

    // Run it
    $app= new \Composer\Console\Application();
    $app->run();

    return 0;
  }
}