104 lines
3.4 KiB
PHP
104 lines
3.4 KiB
PHP
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<?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 const CMD_BUILTINS = [
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'assoc', 'break', 'call', 'cd', 'chdir', 'cls', 'color', 'copy', 'date',
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'del', 'dir', 'echo', 'endlocal', 'erase', 'exit', 'for', 'ftype', 'goto',
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'help', 'if', 'label', 'md', 'mkdir', 'mklink', 'move', 'path', 'pause',
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'popd', 'prompt', 'pushd', 'rd', 'rem', 'ren', 'rename', 'rmdir', 'set',
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'setlocal', 'shift', 'start', 'time', 'title', 'type', 'ver', 'vol',
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];
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private $suffixes = [];
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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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public function addSuffix(string $suffix)
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{
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$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
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*/
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public function find(string $name, ?string $default = null, array $extraDirs = [])
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{
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// windows built-in commands that are present in cmd.exe should not be resolved using PATH as they do not exist as exes
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if ('\\' === \DIRECTORY_SEPARATOR && \in_array(strtolower($name), self::CMD_BUILTINS, true)) {
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return $name;
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}
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$dirs = array_merge(
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explode(\PATH_SEPARATOR, getenv('PATH') ?: getenv('Path')),
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$extraDirs
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);
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$suffixes = [];
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if ('\\' === \DIRECTORY_SEPARATOR) {
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$pathExt = getenv('PATHEXT');
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$suffixes = $this->suffixes;
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$suffixes = array_merge($suffixes, $pathExt ? explode(\PATH_SEPARATOR, $pathExt) : ['.exe', '.bat', '.cmd', '.com']);
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}
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$suffixes = '' !== pathinfo($name, PATHINFO_EXTENSION) ? array_merge([''], $suffixes) : array_merge($suffixes, ['']);
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foreach ($suffixes as $suffix) {
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foreach ($dirs as $dir) {
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if ('' === $dir) {
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$dir = '.';
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}
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if (@is_file($file = $dir.\DIRECTORY_SEPARATOR.$name.$suffix) && ('\\' === \DIRECTORY_SEPARATOR || @is_executable($file))) {
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return $file;
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}
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if (!@is_dir($dir) && basename($dir) === $name.$suffix && @is_executable($dir)) {
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return $dir;
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}
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}
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}
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if ('\\' === \DIRECTORY_SEPARATOR || !\function_exists('exec') || \strlen($name) !== strcspn($name, '/'.\DIRECTORY_SEPARATOR)) {
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return $default;
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}
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$execResult = exec('command -v -- '.escapeshellarg($name));
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if (($executablePath = substr($execResult, 0, strpos($execResult, \PHP_EOL) ?: null)) && @is_executable($executablePath)) {
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return $executablePath;
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}
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return $default;
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}
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}
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