/php/external/PHPUnit/Util/Getopt.php

<?php
/**
 * PHPUnit
 *
 * Copyright (c) 2002-2008, Sebastian Bergmann <sb@sebastian-bergmann.de>.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 *   * Redistributions of source code must retain the above copyright
 *     notice, this list of conditions and the following disclaimer.
 *
 *   * Redistributions in binary form must reproduce the above copyright
 *     notice, this list of conditions and the following disclaimer in
 *     the documentation and/or other materials provided with the
 *     distribution.
 *
 *   * Neither the name of Sebastian Bergmann nor the names of his
 *     contributors may be used to endorse or promote products derived
 *     from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
 * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 *
 * @category   Testing
 * @package    PHPUnit
 * @author     Sebastian Bergmann <sb@sebastian-bergmann.de>
 * @copyright  2002-2008 Sebastian Bergmann <sb@sebastian-bergmann.de>
 * @license    http://www.opensource.org/licenses/bsd-license.php  BSD License
 * @version    SVN: $Id: Getopt.php 1985 2007-12-26 18:11:55Z sb $
 * @link       http://www.phpunit.de/
 * @since      File available since Release 3.0.0
 */

require_once 'PHPUnit/Util/Filter.php';

PHPUnit_Util_Filter::addFileToFilter(__FILE__, 'PHPUNIT');

/**
 * Command-line options parsing class.
 *
 * @category   Testing
 * @package    PHPUnit
 * @author     Andrei Zmievski <andrei@php.net>
 * @author     Sebastian Bergmann <sb@sebastian-bergmann.de>
 * @copyright  2002-2008 Sebastian Bergmann <sb@sebastian-bergmann.de>
 * @license    http://www.opensource.org/licenses/bsd-license.php  BSD License
 * @version    Release: 3.2.9
 * @link       http://www.phpunit.de/
 * @since      Class available since Release 3.0.0
 * @abstract
 */
class PHPUnit_Util_Getopt {

  public static function getopt(array $args, $short_options, $long_options = null) {
    if (empty($args)) {
      return array(array(), array());
    }
    
    $opts = array();
    $non_opts = array();
    
    if ($long_options) {
      sort($long_options);
    }
    
    if (isset($args[0]{0}) && $args[0]{0} != '-') {
      array_shift($args);
    }
    
    reset($args);
    
    while (list($i, $arg) = each($args)) {
      if ($arg == '--') {
        $non_opts = array_merge($non_opts, array_slice($args, $i + 1));
        break;
      }
      
      if ($arg{0} != '-' || (strlen($arg) > 1 && $arg{1} == '-' && ! $long_options)) {
        $non_opts = array_merge($non_opts, array_slice($args, $i));
        break;
      } 

      elseif (strlen($arg) > 1 && $arg{1} == '-') {
        self::parseLongOption(substr($arg, 2), $long_options, $opts, $args);
      } 

      else {
        self::parseShortOption(substr($arg, 1), $short_options, $opts, $args);
      }
    }
    
    return array($opts, $non_opts);
  }

  protected static function parseShortOption($arg, $short_options, &$opts, &$args) {
    for ($i = 0; $i < strlen($arg); $i ++) {
      $opt = $arg{$i};
      $opt_arg = null;
      
      if (($spec = strstr($short_options, $opt)) === false || $arg{$i} == ':') {
        throw new RuntimeException("unrecognized option -- $opt");
      }
      
      if (strlen($spec) > 1 && $spec{1} == ':') {
        if (strlen($spec) > 2 && $spec{2} == ':') {
          if ($i + 1 < strlen($arg)) {
            $opts[] = array($opt, substr($arg, $i + 1));
            break;
          }
        } else {
          if ($i + 1 < strlen($arg)) {
            $opts[] = array($opt, substr($arg, $i + 1));
            break;
          } 

          else if (list(, $opt_arg) = each($args)) {
          } 

          else {
            throw new RuntimeException("option requires an argument -- $opt");
          }
        }
      }
      
      $opts[] = array($opt, $opt_arg);
    }
  }

  protected static function parseLongOption($arg, $long_options, &$opts, &$args) {
    @list($opt, $opt_arg) = explode('=', $arg);
    $opt_len = strlen($opt);
    
    for ($i = 0; $i < count($long_options); $i ++) {
      $long_opt = $long_options[$i];
      $opt_start = substr($long_opt, 0, $opt_len);
      
      if ($opt_start != $opt) continue;
      
      $opt_rest = substr($long_opt, $opt_len);
      
      if ($opt_rest != '' && $opt{0} != '=' && $i + 1 < count($long_options) && $opt == substr($long_options[$i + 1], 0, $opt_len)) {
        throw new RuntimeException("option --$opt is ambiguous");
      }
      
      if (substr($long_opt, - 1) == '=') {
        if (substr($long_opt, - 2) != '==') {
          if (! strlen($opt_arg) && ! (list(, $opt_arg) = each($args))) {
            throw new RuntimeException("option --$opt requires an argument");
          }
        }
      } 

      else if ($opt_arg) {
        throw new RuntimeException("option --$opt doesn't allow an argument");
      }
      
      $opts[] = array('--' . $opt, $opt_arg);
      return;
    }
    
    throw new RuntimeException("unrecognized option --$opt");
  }
}
?>