| Index: trunk/extensions/ParserFunctions/ParserFunctions.php |
| — | — | @@ -103,7 +103,64 @@ |
| 104 | 104 | return '';
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| 105 | 105 | }
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| 106 | 106 | }
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| 107 | | -
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| | 107 | +
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| | 108 | + /**
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| | 109 | + * Returns the absolute path to a subpage, relative to the current article
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| | 110 | + * title. Treats titles as slash-separated paths.
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| | 111 | + *
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| | 112 | + * Following subpage link syntax instead of standard path syntax, an
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| | 113 | + * initial slash is treated as a relative path, and vice versa.
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| | 114 | + */
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| | 115 | + public function rel2abs( &$parser , $to = '' ) {
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| | 116 | +
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| | 117 | + $from = $parser->mTitle->getPrefixedText();
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| | 118 | + $to = rtrim( $to , ' /' );
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| | 119 | +
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| | 120 | + // if we have an empty path, or just one containing a dot
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| | 121 | + if( $to == '' || $to == '.' ) {
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| | 122 | + return $from;
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| | 123 | + }
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| | 124 | +
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| | 125 | + // if the path isn't relative
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| | 126 | + if ( substr( $to , 0 , 1) != '/' &&
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| | 127 | + substr( $to , 0 , 2) != './' &&
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| | 128 | + substr( $to , 0 , 3) != '../' &&
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| | 129 | + $to != '..' )
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| | 130 | + {
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| | 131 | + return $to;
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| | 132 | + }
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| | 133 | + // Make a long path, containing both, enclose it in /.../
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| | 134 | + $fullPath = '/' . $from . '/' . $to . '/';
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| | 135 | +
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| | 136 | + // remove redundant current path dots
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| | 137 | + $fullPath = preg_replace( '!/(\./)+!', '/', $fullPath );
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| | 138 | +
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| | 139 | + // remove double slashes
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| | 140 | + $fullPath = preg_replace( '!/{2,}!', '/', $fullPath );
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| | 141 | +
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| | 142 | + // remove the enclosing slashes now
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| | 143 | + $fullPath = trim( $fullPath , '/' );
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| | 144 | + $exploded = explode ( '/' , $fullPath );
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| | 145 | + $newExploded = array();
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| | 146 | +
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| | 147 | + foreach ( $exploded as $current ) {
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| | 148 | + if( $current == '..' ) { // removing one level
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| | 149 | + if( !count( $newExploded ) ){
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| | 150 | + // attempted to access a node above root node
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| | 151 | + return wfMsgForContent( 'pfunc_rel2abs_invalid_depth', $fullPath );
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| | 152 | + }
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| | 153 | + // remove last level from the stack
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| | 154 | + array_pop( $newExploded );
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| | 155 | + } else {
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| | 156 | + // add the current level to the stack
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| | 157 | + $newExploded[] = $current;
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| | 158 | + }
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| | 159 | + }
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| | 160 | +
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| | 161 | + // we can now join it again
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| | 162 | + return implode( '/' , $newExploded );
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| | 163 | + }
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| | 164 | +
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| 108 | 165 | function ifexist( &$parser, $title = '', $then = '', $else = '' ) {
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| 109 | 166 | $title = Title::newFromText( $title );
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| 110 | 167 | return is_object( $title ) && $title->exists() ? $then : $else;
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| — | — | @@ -157,9 +214,11 @@ |
| 158 | 215 | $wgParser->setFunctionHook( 'switch', array( &$wgExtParserFunctions, 'switchHook' ) );
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| 159 | 216 | $wgParser->setFunctionHook( 'ifexist', array( &$wgExtParserFunctions, 'ifexist' ) );
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| 160 | 217 | $wgParser->setFunctionHook( 'time', array( &$wgExtParserFunctions, 'time' ) );
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| | 218 | + $wgParser->setFunctionHook( 'rel2abs', array( &$wgExtParserFunctions, 'rel2abs' ) );
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| 161 | 219 |
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| 162 | 220 | $wgMessageCache->addMessage( 'pfunc_time_error', "Error: invalid time" );
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| 163 | 221 | $wgMessageCache->addMessage( 'pfunc_time_too_long', "Error: too many #time calls" );
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| | 222 | + $wgMessageCache->addMessage( 'pfunc_rel2abs_invalid_depth', "Error: Invalid depth in path: \"$1\" (tried to access a node above the root node)" );
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| 164 | 223 |
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| 165 | 224 | $wgHooks['ParserClearState'][] = array( &$wgExtParserFunctions, 'clearState' );
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| 166 | 225 | }
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| — | — | @@ -185,6 +244,7 @@ |
| 186 | 245 | $magicWords['default'] = array( 0, '#default' );
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| 187 | 246 | $magicWords['ifexist'] = array( 0, 'ifexist' );
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| 188 | 247 | $magicWords['time'] = array( 0, 'time' );
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| | 248 | + $magicWords['rel2abs'] = array( 0, 'rel2abs' );
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| 189 | 249 | }
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| 190 | 250 | return true;
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| 191 | 251 | }
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