Initial Commit

database/php/pear/Text/Wiki/Parse/Default/Blockquote.php

@@ -0,0 +1,180 @@
+<?php
+
+/**
+* 
+* Parse for block-quoted text.
+* 
+* @category Text
+* 
+* @package Text_Wiki
+* 
+* @author Paul M. Jones <pmjones@php.net>
+* 
+* @license LGPL
+* 
+* @version $Id: Blockquote.php 222150 2006-10-21 05:56:28Z justinpatrin $
+* 
+*/
+
+/**
+* 
+* Parse for block-quoted text.
+* 
+* Find source text marked as a blockquote, identified by any number of
+* greater-than signs '>' at the start of the line, followed by a space,
+* and then the quote text; each '>' indicates an additional level of
+* quoting.
+* 
+* @category Text
+* 
+* @package Text_Wiki
+* 
+* @author Paul M. Jones <pmjones@php.net>
+* 
+*/
+
+class Text_Wiki_Parse_Blockquote extends Text_Wiki_Parse {
+    
+    
+    /**
+    * 
+    * Regex for parsing the source text.
+    * 
+    * @access public
+    * 
+    * @var string
+    * 
+    * @see parse()
+    * 
+    */
+    
+    var $regex = '/\n((\>).*\n)(?!(\>))/Us';
+    
+    
+    /**
+    * 
+    * Generates a replacement for the matched text.
+    * 
+    * Token options are:
+    * 
+    * 'type' =>
+    *     'start' : the start of a blockquote
+    *     'end'   : the end of a blockquote
+    *
+    * 'level' => the indent level (0 for the first level, 1 for the
+    * second, etc)
+    * 
+    * @access public
+    *
+    * @param array &$matches The array of matches from parse().
+    *
+    * @return A series of text and delimited tokens marking the different
+    * list text and list elements.
+    *
+    */
+    
+    function process(&$matches)
+    {
+        // the replacement text we will return to parse()
+        $return = "\n";
+        
+        // the list of post-processing matches
+        $list = array();
+        
+        // $matches[1] is the text matched as a list set by parse();
+        // create an array called $list that contains a new set of
+        // matches for the various list-item elements.
+        preg_match_all(
+            '=^(\>+) (.*\n)=Ums',
+            $matches[1],
+            $list,
+            PREG_SET_ORDER
+        );
+        
+        $curLevel = 0;
+
+        // loop through each list-item element.
+        foreach ($list as $key => $val) {
+            
+            // $val[0] is the full matched list-item line
+            // $val[1] is the number of initial '>' chars (indent level)
+            // $val[2] is the quote text
+            
+            // we number levels starting at 1, not zero
+            $level = strlen($val[1]);
+            
+            // add a level to the list?
+            while ($level > $curLevel) {
+                // the current indent level is greater than the number
+                // of stack elements, so we must be starting a new
+                // level.  push the new level onto the stack with a 
+                // dummy value (boolean true)...
+                ++$curLevel;
+                
+                //$return .= "\n";
+                
+                // ...and add a start token to the return.
+                $return .= $this->wiki->addToken(
+                    $this->rule, 
+                    array(
+                        'type' => 'start',
+                        'level' => $curLevel
+                    )
+                );
+                
+                //$return .= "\n\n";
+            }
+            
+            // remove a level?
+            while ($curLevel > $level) {
+                
+                // as long as the stack count is greater than the
+                // current indent level, we need to end list types.
+                // continue adding end-list tokens until the stack count
+                // and the indent level are the same.
+                
+                //$return .= "\n\n";
+                
+                $return .= $this->wiki->addToken(
+                    $this->rule, 
+                    array (
+                        'type' => 'end',
+                        'level' => $curLevel
+                    )
+                );
+                
+                //$return .= "\n";
+                --$curLevel;
+            }
+            
+            // add the line text.
+            $return .= $val[2];
+        }
+        
+        // the last char of the matched pattern must be \n but we don't
+        // want this to be inside the tokens
+        $return = substr($return, 0, -1);
+        
+        // the last line may have been indented.  go through the stack
+        // and create end-tokens until the stack is empty.
+        //$return .= "\n";
+
+        while ($curLevel > 0) {
+            $return .= $this->wiki->addToken(
+                $this->rule, 
+                array (
+                    'type' => 'end',
+                    'level' => $curLevel
+                )
+            );
+            --$curLevel;
+        }
+        
+        // put back the trailing \n
+        $return .= "\n";
+
+        // we're done!  send back the replacement text.
+        return $return;
+    }
+}
+?>