| Index: trunk/extensions/RegexFunctions/RegexFunctions.php |
| — | — | @@ -0,0 +1,109 @@ |
| | 2 | +<?php |
| | 3 | +/* |
| | 4 | +* RegexFunctions extension by Ryan Schmidt |
| | 5 | +* Regular Expression parser functions |
| | 6 | +*/ |
| | 7 | + |
| | 8 | +if( !defined( 'MEDIAWIKI' ) ) { |
| | 9 | + echo "This file is an extension of the MediaWiki software and cannot be used standalone\n"; |
| | 10 | + die( 1 ); |
| | 11 | +} |
| | 12 | + |
| | 13 | +//credits and hooks |
| | 14 | +$wgExtensionFunctions[] = 'wfRegexFunctions'; |
| | 15 | +$wgExtensionCredits['parserhook'][] = array( |
| | 16 | + 'name' => 'RegexFunctions', |
| | 17 | + 'author' => 'Ryan Schmidt', |
| | 18 | + 'url' => 'http://www.mediawiki.org/wiki/Extension:RegexFunctions', |
| | 19 | + 'version' => '1.0', |
| | 20 | + 'description' => 'Regular Expression parser functions', |
| | 21 | +); |
| | 22 | + |
| | 23 | +$wgHooks['LanguageGetMagic'][] = 'wfRegexFunctionsLanguageGetMagic'; |
| | 24 | + |
| | 25 | +//default globals |
| | 26 | +//how many functions are allowed in a single page? Keep this at least above 3 for usability |
| | 27 | +$wgRegexFunctionsPerPage = 10; |
| | 28 | +//should we allow modifiers in the functions, e.g. the /g and /i modifiers for global and case-insensitive? |
| | 29 | +//This does NOT enable the 'e' modifier for preg_replace, see the next variable for that |
| | 30 | +$wgRegexFunctionsAllowModifiers = true; |
| | 31 | +//should we allow the 'e' modifier in preg_replace? Requires AllowModifiers to be true. |
| | 32 | +//Don't enable this unless you trust every single editor on your wiki, as it opens up a potential XSS vector |
| | 33 | +$wgRegexFunctionsAllowE = false; |
| | 34 | +//limit for rsplit and rreplace functions. -1 is unlimited |
| | 35 | +$wgRegexFunctionsLimit = -1; |
| | 36 | +//array of functions to disable, aka these functions cannot be used :) |
| | 37 | +$wgRegexFunctionsDisable = array(); |
| | 38 | + |
| | 39 | +function wfRegexFunctions() { |
| | 40 | + global $wgParser, $wgExtRegexFunctions; |
| | 41 | + |
| | 42 | + $wgExtRegexFunctions = new ExtRegexFunctions(); |
| | 43 | + $wgParser->setFunctionHook( 'rmatch', array(&$wgExtRegexFunctions, 'rmatch') ); |
| | 44 | + $wgParser->setFunctionHook( 'rsplit', array(&$wgExtRegexFunctions, 'rsplit') ); |
| | 45 | + $wgParser->setFunctionHook( 'rreplace', array(&$wgExtRegexFunctions, 'rreplace') ); |
| | 46 | +} |
| | 47 | + |
| | 48 | +function wfRegexFunctionsLanguageGetMagic( &$magicWords, $langCode ) { |
| | 49 | + switch ( $langCode ) { |
| | 50 | + default: |
| | 51 | + $magicWords['rmatch'] = array( 0, 'rmatch' ); |
| | 52 | + $magicWords['rsplit'] = array( 0, 'rsplit' ); |
| | 53 | + $magicWords['rreplace'] = array( 0, 'rreplace' ); |
| | 54 | + } |
| | 55 | + return true; |
| | 56 | +} |
| | 57 | + |
| | 58 | +Class ExtRegexFunctions { |
| | 59 | + var $num = 0; |
| | 60 | + function rmatch ( &$parser, $string = '', &$pattern = '', &$return = '', $notfound = '', $offset = 0 ) { |
| | 61 | + global $wgRegexFunctionsPerPage, $wgRegexFunctionsAllowModifiers, $wgRegexFunctionsDisable; |
| | 62 | + if(in_array('rmatch', $wgRegexFunctionsDisable)) |
| | 63 | + return; |
| | 64 | + $this->num++; |
| | 65 | + if($this->num > $wgRegexFunctionsPerPage) |
| | 66 | + return; |
| | 67 | + if(!$wgRegexFunctionsAllowModifiers) |
| | 68 | + $pattern = str_replace('/', '\/', $pattern); |
| | 69 | + $num = preg_match( $pattern, $string, $matches, PREG_OFFSET_CAPTURE, $offset ); |
| | 70 | + if($num === false) |
| | 71 | + return; |
| | 72 | + if($num === 0) |
| | 73 | + return $notfound; |
| | 74 | + $mn = 0; |
| | 75 | + foreach($matches as $match) { |
| | 76 | + if($mn > 9) |
| | 77 | + break; |
| | 78 | + $return = str_replace('$'.$mn, $matches[$mn][0], $return); |
| | 79 | + $return = str_replace('\\\\'.$mn, $matches[$mn][1], $return); |
| | 80 | + $mn++; |
| | 81 | + } |
| | 82 | + return $return; |
| | 83 | + } |
| | 84 | + function rsplit ( &$parser, $string = '', &$pattern = '', $piece = 0 ) { |
| | 85 | + global $wgRegexFunctionsPerPage, $wgRegexFunctionsAllowModifiers, $wgRegexFunctionsLimit, $wgRegexFunctionsDisable; |
| | 86 | + if(in_array('rmatch', $wgRegexFunctionsDisable)) |
| | 87 | + return; |
| | 88 | + $this->num++; |
| | 89 | + if($this->num > $wgRegexFunctionsPerPage) |
| | 90 | + return; |
| | 91 | + if(!$wgRegexFunctionsAllowModifiers) |
| | 92 | + $pattern = str_replace('/', '\/', $pattern); |
| | 93 | + $res = preg_split( $pattern, $string, $wgRegexFunctionsLimit ); |
| | 94 | + return $res[$piece]; |
| | 95 | + } |
| | 96 | + function rreplace ( &$parser, $string = '', &$pattern = '', &$replace = '' ) { |
| | 97 | + global $wgRegexFunctionsPerPage, $wgRegexFunctionsAllowModifiers, $wgRegexFunctionsAllowE, $wgRegexFunctionsLimit, $wgRegexFunctionsDisable; |
| | 98 | + if(in_array('rmatch', $wgRegexFunctionsDisable)) |
| | 99 | + return; |
| | 100 | + $this->num++; |
| | 101 | + if($this->num > $wgRegexFunctionsPerPage) |
| | 102 | + return; |
| | 103 | + if(!$wgRegexFunctionsAllowModifiers) |
| | 104 | + $pattern = str_replace('/', '\/', $pattern); |
| | 105 | + elseif(!$wgRegexFunctionsAllowE) |
| | 106 | + $pattern = preg_replace('/(\/.*?)e(.*?)$/i', '$1$2', $pattern); |
| | 107 | + $res = preg_replace($pattern, $replace, $string, $wgRegexFunctionsLimit); |
| | 108 | + return $res; |
| | 109 | + } |
| | 110 | +} |
| \ No newline at end of file |
| Property changes on: trunk/extensions/RegexFunctions/RegexFunctions.php |
| ___________________________________________________________________ |
| Added: svn:eol-style |
| 1 | 111 | + native |