<?php

/*

 * This file is part of the Symfony package.

 *

 * (c) Fabien Potencier <fabien@symfony.com>

 *

 * For the full copyright and license information, please view the LICENSE

 * file that was distributed with this source code.

 */

namespace Symfony\Component\Process;

/**

 * Generic executable finder.

 *

 * @author Fabien Potencier <fabien@symfony.com>

 * @author Johannes M. Schmitt <schmittjoh@gmail.com>

 */

class ExecutableFinder

{

    private $suffixes = array('.exe', '.bat', '.cmd', '.com');

    public function setSuffixes(array $suffixes)

    {

        $this->suffixes = $suffixes;

    }

    public function addSuffix($suffix)

    {

        $this->suffixes[] = $suffix;

    }

    /**

     * Finds an executable by name.

     *

     * @param string $name    The executable name (without the extension)

     * @param string $default The default to return if no executable is found

     *

     * @return string The executable path or default value

     */

    public function find($name, $default = null)

    {

        if (ini_get('open_basedir')) {

            $searchPath = explode(PATH_SEPARATOR, getenv('open_basedir'));

            $dirs = array();

            foreach ($searchPath as $path) {

                if (is_dir($path)) {

                    $dirs[] = $path;

                } else {

                    $file = str_replace(dirname($path), '', $path);

                    if ($file == $name && is_executable($path)) {

                        return $path;

                    }

                }

            }

        } else {

            $dirs = explode(PATH_SEPARATOR, getenv('PATH') ? getenv('PATH') : getenv('Path'));

        }

        $suffixes = DIRECTORY_SEPARATOR == '\\' ? (getenv('PATHEXT') ? explode(PATH_SEPARATOR, getenv('PATHEXT')) : $this->suffixes) : array('');

        foreach ($suffixes as $suffix) {

            foreach ($dirs as $dir) {

                if (is_file($file = $dir.DIRECTORY_SEPARATOR.$name.$suffix) && is_executable($file)) {

                    return $file;

                }

            }

        }

        return $default;

    }

}