<?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:----OTIwMDUwOTg3MTM1MzY2MiA3MTg2NjEwMDkxNjc5ODM4IDMzOTc4MDI2NTU2NDE2NQ==