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Filename : ExecutableFinder.php
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<?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 PerformanceBooster\Symfony\Component\Process;

/**
 * Generic executable finder.
 *
 * @author Fabien Potencier <fabien@symfony.com>
 * @author Johannes M. Schmitt <schmittjoh@gmail.com>
 */
class ExecutableFinder
{
    private const CMD_BUILTINS = ['assoc', 'break', 'call', 'cd', 'chdir', 'cls', 'color', 'copy', 'date', 'del', 'dir', 'echo', 'endlocal', 'erase', 'exit', 'for', 'ftype', 'goto', 'help', 'if', 'label', 'md', 'mkdir', 'mklink', 'move', 'path', 'pause', 'popd', 'prompt', 'pushd', 'rd', 'rem', 'ren', 'rename', 'rmdir', 'set', 'setlocal', 'shift', 'start', 'time', 'title', 'type', 'ver', 'vol'];
    private array $suffixes = [];
    /**
     * Replaces default suffixes of executable.
     *
     * @return void
     */
    public function setSuffixes(array $suffixes)
    {
        $this->suffixes = $suffixes;
    }
    /**
     * Adds new possible suffix to check for executable.
     *
     * @return void
     */
    public function addSuffix(string $suffix)
    {
        $this->suffixes[] = $suffix;
    }
    /**
     * Finds an executable by name.
     *
     * @param string      $name      The executable name (without the extension)
     * @param string|null $default   The default to return if no executable is found
     * @param array       $extraDirs Additional dirs to check into
     */
    public function find(string $name, ?string $default = null, array $extraDirs = []) : ?string
    {
        // windows built-in commands that are present in cmd.exe should not be resolved using PATH as they do not exist as exes
        if ('\\' === \DIRECTORY_SEPARATOR && \in_array(\strtolower($name), self::CMD_BUILTINS, \true)) {
            return $name;
        }
        $dirs = \array_merge(\explode(\PATH_SEPARATOR, \getenv('PATH') ?: \getenv('Path')), $extraDirs);
        $suffixes = [];
        if ('\\' === \DIRECTORY_SEPARATOR) {
            $pathExt = \getenv('PATHEXT');
            $suffixes = $this->suffixes;
            $suffixes = \array_merge($suffixes, $pathExt ? \explode(\PATH_SEPARATOR, $pathExt) : ['.exe', '.bat', '.cmd', '.com']);
        }
        $suffixes = '' !== \pathinfo($name, \PATHINFO_EXTENSION) ? \array_merge([''], $suffixes) : \array_merge($suffixes, ['']);
        foreach ($suffixes as $suffix) {
            foreach ($dirs as $dir) {
                if ('' === $dir) {
                    $dir = '.';
                }
                if (@\is_file($file = $dir . \DIRECTORY_SEPARATOR . $name . $suffix) && ('\\' === \DIRECTORY_SEPARATOR || @\is_executable($file))) {
                    return $file;
                }
                if (!@\is_dir($dir) && \basename($dir) === $name . $suffix && @\is_executable($dir)) {
                    return $dir;
                }
            }
        }
        if ('\\' === \DIRECTORY_SEPARATOR || !\function_exists('exec') || \strlen($name) !== \strcspn($name, '/' . \DIRECTORY_SEPARATOR)) {
            return $default;
        }
        $execResult = \exec('command -v -- ' . \escapeshellarg($name));
        if (($executablePath = \substr($execResult, 0, \strpos($execResult, \PHP_EOL) ?: null)) && @\is_executable($executablePath)) {
            return $executablePath;
        }
        return $default;
    }
}