<?php

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/*

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* This file is part of the Symfony package.

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*

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

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*

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

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* file that was distributed with this source code.

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*/

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namespace Symfony\Component\Process;

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/**

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* Generic executable finder.

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*

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

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

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*/

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class ExecutableFinder

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{

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private $suffixes = ['.exe', '.bat', '.cmd', '.com'];

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/**

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* Replaces default suffixes of executable.

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*/

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public function setSuffixes(array $suffixes)

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{

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$this->suffixes = $suffixes;

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}

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/**

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* Adds new possible suffix to check for executable.

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*

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* @param string $suffix

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*/

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public function addSuffix($suffix)

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{

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$this->suffixes[] = $suffix;

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}

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/**

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* Finds an executable by name.

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*

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

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

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* @param array $extraDirs Additional dirs to check into

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*

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* @return string|null The executable path or default value

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*/

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public function find($name, $default = null, array $extraDirs = [])

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{

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if (ini_get('open_basedir')) {

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$searchPath = array_merge(explode(\PATH_SEPARATOR, ini_get('open_basedir')), $extraDirs);

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$dirs = [];

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foreach ($searchPath as $path) {

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// Silencing against https://bugs.php.net/69240

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if (@is_dir($path)) {

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$dirs[] = $path;

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} else {

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if (basename($path) == $name && @is_executable($path)) {

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return $path;

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}

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}

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}

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} else {

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$dirs = array_merge(

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explode(\PATH_SEPARATOR, getenv('PATH') ?: getenv('Path')),

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$extraDirs

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);

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}

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$suffixes = [''];

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if ('\\' === \DIRECTORY_SEPARATOR) {

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$pathExt = getenv('PATHEXT');

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$suffixes = array_merge($pathExt ? explode(\PATH_SEPARATOR, $pathExt) : $this->suffixes, $suffixes);

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}

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foreach ($suffixes as $suffix) {

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foreach ($dirs as $dir) {

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if (@is_file($file = $dir.\DIRECTORY_SEPARATOR.$name.$suffix) && ('\\' === \DIRECTORY_SEPARATOR || @is_executable($file))) {

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return $file;

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}

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}

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}

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return $default;

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}

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}

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