gluon-web-remote

Web remote Administration for big size of gluon routers
git clone git://archive.git.mtrnord.blog/MTRNord/gluon-web-remote.git
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Escaper.php (3858B)

      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\Yaml;
     13 
     14 /**
     15  * Escaper encapsulates escaping rules for single and double-quoted
     16  * YAML strings.
     17  *
     18  * @author Matthew Lewinski <matthew@lewinski.org>
     19  */
     20 class Escaper
     21 {
     22     // Characters that would cause a dumped string to require double quoting.
     23     const REGEX_CHARACTER_TO_ESCAPE = "[\\x00-\\x1f]|\xc2\x85|\xc2\xa0|\xe2\x80\xa8|\xe2\x80\xa9";
     24 
     25     // Mapping arrays for escaping a double quoted string. The backslash is
     26     // first to ensure proper escaping because str_replace operates iteratively
     27     // on the input arrays. This ordering of the characters avoids the use of strtr,
     28     // which performs more slowly.
     29     private static $escapees = array('\\', '\\\\', '\\"', '"',
     30                                      "\x00",  "\x01",  "\x02",  "\x03",  "\x04",  "\x05",  "\x06",  "\x07",
     31                                      "\x08",  "\x09",  "\x0a",  "\x0b",  "\x0c",  "\x0d",  "\x0e",  "\x0f",
     32                                      "\x10",  "\x11",  "\x12",  "\x13",  "\x14",  "\x15",  "\x16",  "\x17",
     33                                      "\x18",  "\x19",  "\x1a",  "\x1b",  "\x1c",  "\x1d",  "\x1e",  "\x1f",
     34                                      "\xc2\x85", "\xc2\xa0", "\xe2\x80\xa8", "\xe2\x80\xa9",);
     35     private static $escaped = array('\\\\', '\\"', '\\\\', '\\"',
     36                                      '\\0',   '\\x01', '\\x02', '\\x03', '\\x04', '\\x05', '\\x06', '\\a',
     37                                      '\\b',   '\\t',   '\\n',   '\\v',   '\\f',   '\\r',   '\\x0e', '\\x0f',
     38                                      '\\x10', '\\x11', '\\x12', '\\x13', '\\x14', '\\x15', '\\x16', '\\x17',
     39                                      '\\x18', '\\x19', '\\x1a', '\\e',   '\\x1c', '\\x1d', '\\x1e', '\\x1f',
     40                                      '\\N', '\\_', '\\L', '\\P',);
     41 
     42     /**
     43      * Determines if a PHP value would require double quoting in YAML.
     44      *
     45      * @param string $value A PHP value
     46      *
     47      * @return bool True if the value would require double quotes.
     48      */
     49     public static function requiresDoubleQuoting($value)
     50     {
     51         return preg_match('/'.self::REGEX_CHARACTER_TO_ESCAPE.'/u', $value);
     52     }
     53 
     54     /**
     55      * Escapes and surrounds a PHP value with double quotes.
     56      *
     57      * @param string $value A PHP value
     58      *
     59      * @return string The quoted, escaped string
     60      */
     61     public static function escapeWithDoubleQuotes($value)
     62     {
     63         return sprintf('"%s"', str_replace(self::$escapees, self::$escaped, $value));
     64     }
     65 
     66     /**
     67      * Determines if a PHP value would require single quoting in YAML.
     68      *
     69      * @param string $value A PHP value
     70      *
     71      * @return bool True if the value would require single quotes.
     72      */
     73     public static function requiresSingleQuoting($value)
     74     {
     75         // Determines if a PHP value is entirely composed of a value that would
     76         // require single quoting in YAML.
     77         if (in_array(strtolower($value), array('null', '~', 'true', 'false', 'y', 'n', 'yes', 'no', 'on', 'off'))) {
     78             return true;
     79         }
     80 
     81         // Determines if the PHP value contains any single characters that would
     82         // cause it to require single quoting in YAML.
     83         return preg_match('/[ \s \' " \: \{ \} \[ \] , & \* \# \?] | \A[ \- ? | < > = ! % @ ` ]/x', $value);
     84     }
     85 
     86     /**
     87      * Escapes and surrounds a PHP value with single quotes.
     88      *
     89      * @param string $value A PHP value
     90      *
     91      * @return string The quoted, escaped string
     92      */
     93     public static function escapeWithSingleQuotes($value)
     94     {
     95         return sprintf("'%s'", str_replace('\'', '\'\'', $value));
     96     }
     97 }