Merge pull request #21 from GabrieleNunez/master

- Moved Regular Expresion generation into function generateCensorChec…

src/CensorWords.php

@@ -4,6 +4,12 @@
 
 class CensorWords
 {
+ /*
+ * When the dictionary is loaded, a ton of regular expression strings are generated
+ * These regular expressions are used to perform the profanity checks. 
+ * Store them here so when we call censorString we don't need to regenerate them on every call
+ */
+ private $censorChecks = null;
 
  public function __construct() { 
  $this->replacer = '*';
@@ -45,7 +51,6 @@ public function setDictionary($dictionary) {
  }
  } 
  $this->badwords = $badwords;
-
  }
 
 
@@ -72,7 +77,55 @@ public function randCensor($chars, $len) {
  substr($chars, 0, ($len%strlen($chars))));
 
  }
+
+ /**
+ * Generates the regular expressions that are going to be used to check for profanity
+ * @param boolean $fullWords Option to generate regular expressions used for full words instead. Default is false
+ * void
+ */
+ private function generateCensorChecks($fullWords = false) {
+
+ $badwords = $this->badwords;
+
+ // generate censor checks as soon as we load the dictionary
+ // utilize leet equivalents as well
+ $leet_replace = array();
+ $leet_replace['a']= '(a|a\.|a\-|4|@|Á|á|À|Â|à|Â|â|Ä|ä|Ã|ã|Å|å|α|Δ|Λ|λ)';
+ $leet_replace['b']= '(b|b\.|b\-|8|\|3|ß|Β|β)';
+ $leet_replace['c']= '(c|c\.|c\-|Ç|ç|¢|€|<|\(|{|©)';
+ $leet_replace['d']= '(d|d\.|d\-|&part;|\|\)|Þ|þ|Ð|ð)';
+ $leet_replace['e']= '(e|e\.|e\-|3|€|È|è|É|é|Ê|ê|∑)';
+ $leet_replace['f']= '(f|f\.|f\-|ƒ)';
+ $leet_replace['g']= '(g|g\.|g\-|6|9)';
+ $leet_replace['h']= '(h|h\.|h\-|Η)';
+ $leet_replace['i']= '(i|i\.|i\-|!|\||\]\[|]|1|∫|Ì|Í|Î|Ï|ì|í|î|ï)';
+ $leet_replace['j']= '(j|j\.|j\-)';
+ $leet_replace['k']= '(k|k\.|k\-|Κ|κ)';
+ $leet_replace['l']= '(l|1\.|l\-|!|\||\]\[|]|£|∫|Ì|Í|Î|Ï)';
+ $leet_replace['m']= '(m|m\.|m\-)';
+ $leet_replace['n']= '(n|n\.|n\-|η|Ν|Π)';
+ $leet_replace['o']= '(o|o\.|o\-|0|Ο|ο|Φ|¤|°|ø)';
+ $leet_replace['p']= '(p|p\.|p\-|ρ|Ρ|¶|þ)';
+ $leet_replace['q']= '(q|q\.|q\-)';
+ $leet_replace['r']= '(r|r\.|r\-|®)';
+ $leet_replace['s']= '(s|s\.|s\-|5|\$|§)';
+ $leet_replace['t']= '(t|t\.|t\-|Τ|τ)';
+ $leet_replace['u']= '(u|u\.|u\-|υ|µ)';
+ $leet_replace['v']= '(v|v\.|v\-|υ|ν)';
+ $leet_replace['w']= '(w|w\.|w\-|ω|ψ|Ψ)';
+ $leet_replace['x']= '(x|x\.|x\-|Χ|χ)';
+ $leet_replace['y']= '(y|y\.|y\-|¥|γ|ÿ|ý|Ÿ|Ý)';
+ $leet_replace['z']= '(z|z\.|z\-|Ζ)';
 
+ $censorChecks = array();
+ for ($x=0; $x<count($badwords); $x++) {
+ $censorChecks[$x] = $fullWords ? '/\b'.str_ireplace(array_keys($leet_replace),array_values($leet_replace), $badwords[$x]).'\b/i' 
+ : '/'.str_ireplace(array_keys($leet_replace),array_values($leet_replace), $badwords[$x]).'/i';
+ }
+
+ $this->censorChecks = $censorChecks;
+
+ }
 
  /**
  * Apply censorship to $string, replacing $badwords with $censorChar.
@@ -81,53 +134,18 @@ public function randCensor($chars, $len) {
  * string[string]
  */
  public function censorString($string, $fullWords = false) {
- $badwords = $this->badwords;
- $anThis = &$this;
 
- $leet_replace = array();
- $leet_replace['a']= '(a|a\.|a\-|4|@|Á|á|À|Â|à|Â|â|Ä|ä|Ã|ã|Å|å|α|Δ|Λ|λ)';
- $leet_replace['b']= '(b|b\.|b\-|8|\|3|ß|Β|β)';
- $leet_replace['c']= '(c|c\.|c\-|Ç|ç|¢|€|<|\(|{|©)';
- $leet_replace['d']= '(d|d\.|d\-|&part;|\|\)|Þ|þ|Ð|ð)';
- $leet_replace['e']= '(e|e\.|e\-|3|€|È|è|É|é|Ê|ê|∑)';
- $leet_replace['f']= '(f|f\.|f\-|ƒ)';
- $leet_replace['g']= '(g|g\.|g\-|6|9)';
- $leet_replace['h']= '(h|h\.|h\-|Η)';
- $leet_replace['i']= '(i|i\.|i\-|!|\||\]\[|]|1|∫|Ì|Í|Î|Ï|ì|í|î|ï)';
- $leet_replace['j']= '(j|j\.|j\-)';
- $leet_replace['k']= '(k|k\.|k\-|Κ|κ)';
- $leet_replace['l']= '(l|1\.|l\-|!|\||\]\[|]|£|∫|Ì|Í|Î|Ï)';
- $leet_replace['m']= '(m|m\.|m\-)';
- $leet_replace['n']= '(n|n\.|n\-|η|Ν|Π)';
- $leet_replace['o']= '(o|o\.|o\-|0|Ο|ο|Φ|¤|°|ø)';
- $leet_replace['p']= '(p|p\.|p\-|ρ|Ρ|¶|þ)';
- $leet_replace['q']= '(q|q\.|q\-)';
- $leet_replace['r']= '(r|r\.|r\-|®)';
- $leet_replace['s']= '(s|s\.|s\-|5|\$|§)';
- $leet_replace['t']= '(t|t\.|t\-|Τ|τ)';
- $leet_replace['u']= '(u|u\.|u\-|υ|µ)';
- $leet_replace['v']= '(v|v\.|v\-|υ|ν)';
- $leet_replace['w']= '(w|w\.|w\-|ω|ψ|Ψ)';
- $leet_replace['x']= '(x|x\.|x\-|Χ|χ)';
- $leet_replace['y']= '(y|y\.|y\-|¥|γ|ÿ|ý|Ÿ|Ý)';
- $leet_replace['z']= '(z|z\.|z\-|Ζ)';
-
- $words = explode(" ", $string);
-
- for ($x=0; $x<count($badwords); $x++) {
- if($fullWords) {
- $badwords[$x] = '/\b'.str_ireplace(array_keys($leet_replace),array_values($leet_replace), $badwords[$x]).'\b/i';
- } else {
- $badwords[$x] = '/'.str_ireplace(array_keys($leet_replace),array_values($leet_replace), $badwords[$x]).'/i';
- }
- }
-
+ // generate our censor checks if they are not defined yet
+ if(!$this->censorChecks)
+ $this->generateCensorChecks($fullWords);
+
+ $anThis = &$this;
  $counter=0;
  $match = array();
  $newstring = array();
  $newstring['orig'] = html_entity_decode($string);
  // $anThis for <= PHP5.3
- $newstring['clean'] = preg_replace_callback($badwords, function($matches) use (&$anThis,&$counter,&$match) {
+ $newstring['clean'] = preg_replace_callback($this->censorChecks, function($matches) use (&$anThis,&$counter,&$match) {
  $match[$counter++] = $matches[0];
 
  // is $anThis->replacer a single char?