1 <?php

     2 

     3 /*

     4  * This file is part of the Symfony package.

     5  *

     6  * (c) Fabien Potencier <fabien@symfony.com>

     7  *

     8  * For the full copyright and license information, please view the LICENSE

     9  * file that was distributed with this source code.

    10  */

    11 

    12 namespace Symfony\Component\Console\Input;

    13 

    14 /**

    15  * StringInput represents an input provided as a string.

    16  *

    17  * Usage:

    18  *

    19  *     $input = new StringInput('foo --bar="foobar"');

    20  *

    21  * @author Fabien Potencier <fabien@symfony.com>

    22  *

    23  * @api

    24  */

    25 class StringInput extends ArgvInput

    26 {

    27     const REGEX_STRING = '([^ ]+?)(?: |(?<!\\\\)"|(?<!\\\\)\'|$)';

    28     const REGEX_QUOTED_STRING = '(?:"([^"\\\\]*(?:\\\\.[^"\\\\]*)*)"|\'([^\'\\\\]*(?:\\\\.[^\'\\\\]*)*)\')';

    29 

    30     /**

    31      * Constructor.

    32      *

    33      * @param string     $input An array of parameters from the CLI (in the argv format)

    34      * @param InputDefinition $definition A InputDefinition instance

    35      *

    36      * @api

    37      */

    38     public function __construct($input, InputDefinition $definition = null)

    39     {

    40         parent::__construct(array(), $definition);

    41 

    42         $this->setTokens($this->tokenize($input));

    43     }

    44 

    45     /**

    46      * Tokenizes a string.

    47      *

    48      * @param string $input The input to tokenize

    49      * @throws \InvalidArgumentException When unable to parse input (should never happen)

    50      */

    51     private function tokenize($input)

    52     {

    53         $input = preg_replace('/(\r\n|\r|\n|\t)/', ' ', $input);

    54 

    55         $tokens = array();

    56         $length = strlen($input);

    57         $cursor = 0;

    58         while ($cursor < $length) {

    59             if (preg_match('/\s+/A', $input, $match, null, $cursor)) {

    60             } elseif (preg_match('/([^="\' ]+?)(=?)('.self::REGEX_QUOTED_STRING.'+)/A', $input, $match, null, $cursor)) {

    61                 $tokens[] = $match[1].$match[2].stripcslashes(str_replace(array('"\'', '\'"', '\'\'', '""'), '', substr($match[3], 1, strlen($match[3]) - 2)));

    62             } elseif (preg_match('/'.self::REGEX_QUOTED_STRING.'/A', $input, $match, null, $cursor)) {

    63                 $tokens[] = stripcslashes(substr($match[0], 1, strlen($match[0]) - 2));

    64             } elseif (preg_match('/'.self::REGEX_STRING.'/A', $input, $match, null, $cursor)) {

    65                 $tokens[] = stripcslashes($match[1]);

    66             } else {

    67                 // should never happen

    68                 // @codeCoverageIgnoreStart

    69                 throw new \InvalidArgumentException(sprintf('Unable to parse input near "... %s ..."', substr($input, $cursor, 10)));

    70                 // @codeCoverageIgnoreEnd

    71             }

    72 

    73             $cursor += strlen($match[0]);

    74         }

    75 

    76         return $tokens;

    77     }

    78 }