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function _shortcode_get_shortcode_regex in Shortcode 6

Same name and namespace in other branches
  1. 7.2 shortcode.module \_shortcode_get_shortcode_regex()
  2. 7 shortcode.module \_shortcode_get_shortcode_regex()

Retrieve the shortcode regular expression for searching.

The regular expression combines the shortcode tags in the regular expression in a regex class.

The regular expresion contains 6 different sub matches to help with parsing.

1/6 - An extra [ or ] to allow for escaping shortcodes with double [[]] 2 - The shortcode name 3 - The shortcode argument list 4 - The self closing / 5 - The content of a shortcode when it wraps some content.

Return value

string The shortcode search regular expression

File

./shortcode.module, line 508

Code

function _shortcode_get_shortcode_regex($names) {
  $tagregexp = join('|', array_map('preg_quote', $names));

  // WARNING! Do not change this regex without changing do_shortcode_tag() and strip_shortcodes()
  return '(.?)\\[(' . $tagregexp . ')\\b(.*?)(?:(\\/))?\\](?:(.+?)\\[\\/\\2\\])?(.?)';
}