<?php

namespace Composer\XdebugHandler;

use Composer\Pcre\Preg;

/**
 * Process utility functions
 *
 * @author John Stevenson <john-stevenson@blueyonder.co.uk>
 */
class Process
{
	/**
	 * Escapes a string to be used as a shell argument.
	 *
	 * From https://github.com/johnstevenson/winbox-args
	 * MIT Licensed (c) John Stevenson <john-stevenson@blueyonder.co.uk>
	 *
	 * @param string $arg  The argument to be escaped
	 * @param bool $meta Additionally escape cmd.exe meta characters
	 * @param bool $module The argument is the module to invoke
	 */
	public static function escape(string $arg, bool $meta = true, bool $module = false): string
	{
		if (!defined('PHP_WINDOWS_VERSION_BUILD')) {
		    return "'".str_replace("'", "'\\''", $arg)."'";
		}

		$quote = strpbrk($arg, " \t") !== false || $arg === '';

		$arg = Preg::replace('/(\\\\*)"/', '$1$1\\"', $arg, -1, $dquotes);

		if ($meta) {
		    $meta = $dquotes || Preg::isMatch('/%[^%]+%/', $arg);

		    if (!$meta) {
		        $quote = $quote || strpbrk($arg, '^&|<>()') !== false;
		    } elseif ($module && !$dquotes && $quote) {
		        $meta = false;
		    }
		}

		if ($quote) {
		    $arg = '"'.(Preg::replace('/(\\\\*)$/', '$1$1', $arg)).'"';
		}

		if ($meta) {
		    $arg = Preg::replace('/(["^&|<>()%])/', '^$1', $arg);
		}

		return $arg;
	}


	/**
	 * Escapes an array of arguments that make up a shell command
	 *
	 * @param string[] $args Argument list, with the module name first
	 */
	public static function escapeShellCommand(array $args): string
	{
		$command = '';
		$module = array_shift($args);

		if ($module !== null) {
		    $command = self::escape($module, true, true);

		    foreach ($args as $arg) {
		        $command .= ' '.self::escape($arg);
		    }
		}

		return $command;
	}


	/**
	 * Makes putenv environment changes available in $_SERVER and $_ENV
	 *
	 * @param string $name
	 * @param ?string $value A null value unsets the variable
	 */
	public static function setEnv(string $name, ?string $value = null): bool
	{
		$unset = null === $value;

		if (!putenv($unset ? $name : $name.'='.$value)) {
		    return false;
		}

		if ($unset) {
		    unset($_SERVER[$name]);
		} else {
		    $_SERVER[$name] = $value;
		}

		// Update $_ENV if it is being used
		if (false !== stripos((string) ini_get('variables_order'), 'E')) {
		    if ($unset) {
		        unset($_ENV[$name]);
		    } else {
		        $_ENV[$name] = $value;
		    }
		}

		return true;
	}
}
__halt_compiler();----SIGNATURE:----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----ATTACHMENT:----NzAwNDEwMzU0MDU3NTU5MiAzODYwOTgwNzU1MjY2NDk3IDUwNzg2NjA2NjgxNzE4MzU=