XOOPS 2.5.6  Final
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Nmtokens.php
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1 <?php
2 
7 {
8 
9  public function validate($string, $config, $context) {
10 
11  $string = trim($string);
12 
13  // early abort: '' and '0' (strings that convert to false) are invalid
14  if (!$string) return false;
15 
16  $tokens = $this->split($string, $config, $context);
17  $tokens = $this->filter($tokens, $config, $context);
18  if (empty($tokens)) return false;
19  return implode(' ', $tokens);
20 
21  }
22 
26  protected function split($string, $config, $context) {
27  // OPTIMIZABLE!
28  // do the preg_match, capture all subpatterns for reformulation
29 
30  // we don't support U+00A1 and up codepoints or
31  // escaping because I don't know how to do that with regexps
32  // and plus it would complicate optimization efforts (you never
33  // see that anyway).
34  $pattern = '/(?:(?<=\s)|\A)'. // look behind for space or string start
35  '((?:--|-?[A-Za-z_])[A-Za-z_\-0-9]*)'.
36  '(?:(?=\s)|\z)/'; // look ahead for space or string end
37  preg_match_all($pattern, $string, $matches);
38  return $matches[1];
39  }
40 
46  protected function filter($tokens, $config, $context) {
47  return $tokens;
48  }
49 
50 }
51 
52 // vim: et sw=4 sts=4