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   1  /*
   2   * FCKeditor - The text editor for internet
   3   * Copyright (C) 2003-2006 Frederico Caldeira Knabben
   4   * 
   5   * Licensed under the terms of the GNU Lesser General Public License:
   6   *         http://www.opensource.org/licenses/lgpl-license.php
   7   * 
   8   * For further information visit:
   9   *         http://www.fckeditor.net/
  10   * 
  11   * "Support Open Source software. What about a donation today?"
  12   * 
  13   * File Name: fckcodeformatter.js
  14   *     Format the HTML.
  15   * 
  16   * File Authors:
  17   *         Frederico Caldeira Knabben (fredck@fckeditor.net)
  18   */
  19  
  20  var FCKCodeFormatter = new Object() ;
  21  
  22  FCKCodeFormatter.Init = function()
  23  {
  24      var oRegex = this.Regex = new Object() ;
  25  
  26      // Regex for line breaks.
  27      oRegex.BlocksOpener = /\<(P|DIV|H1|H2|H3|H4|H5|H6|ADDRESS|PRE|OL|UL|LI|TITLE|META|LINK|BASE|SCRIPT|LINK|TD|TH|AREA|OPTION)[^\>]*\>/gi ;
  28      oRegex.BlocksCloser = /\<\/(P|DIV|H1|H2|H3|H4|H5|H6|ADDRESS|PRE|OL|UL|LI|TITLE|META|LINK|BASE|SCRIPT|LINK|TD|TH|AREA|OPTION)[^\>]*\>/gi ;
  29  
  30      oRegex.NewLineTags    = /\<(BR|HR)[^\>]*\>/gi ;
  31  
  32      oRegex.MainTags = /\<\/?(HTML|HEAD|BODY|FORM|TABLE|TBODY|THEAD|TR)[^\>]*\>/gi ;
  33  
  34      oRegex.LineSplitter = /\s*\n+\s*/g ;
  35  
  36      // Regex for indentation.
  37      oRegex.IncreaseIndent = /^\<(HTML|HEAD|BODY|FORM|TABLE|TBODY|THEAD|TR|UL|OL)[ \/\>]/i ;
  38      oRegex.DecreaseIndent = /^\<\/(HTML|HEAD|BODY|FORM|TABLE|TBODY|THEAD|TR|UL|OL)[ \>]/i ;
  39      oRegex.FormatIndentatorRemove = new RegExp( '^' + FCKConfig.FormatIndentator ) ;
  40  
  41      oRegex.ProtectedTags = /(<PRE[^>]*>)([\s\S]*?)(<\/PRE>)/gi ;
  42  }
  43  
  44  FCKCodeFormatter._ProtectData = function( outer, opener, data, closer )
  45  {
  46      return opener + '___FCKpd___' + FCKCodeFormatter.ProtectedData.AddItem( data ) + closer ;
  47  }
  48  
  49  FCKCodeFormatter.Format = function( html )
  50  {
  51      if ( !this.Regex )
  52          this.Init() ;
  53  
  54      // Protected content that remain untouched during the
  55      // process go in the following array.
  56      FCKCodeFormatter.ProtectedData = new Array() ;
  57      
  58      var sFormatted = html.replace( this.Regex.ProtectedTags, FCKCodeFormatter._ProtectData ) ;
  59      
  60      // Line breaks.
  61      sFormatted        = sFormatted.replace( this.Regex.BlocksOpener, '\n$&' ) ; ;
  62      sFormatted        = sFormatted.replace( this.Regex.BlocksCloser, '$&\n' ) ;
  63      sFormatted        = sFormatted.replace( this.Regex.NewLineTags, '$&\n' ) ;
  64      sFormatted        = sFormatted.replace( this.Regex.MainTags, '\n$&\n' ) ;
  65  
  66      // Indentation.
  67      var sIndentation = '' ;
  68      
  69      var asLines = sFormatted.split( this.Regex.LineSplitter ) ;
  70      sFormatted = '' ;
  71      
  72      for ( var i = 0 ; i < asLines.length ; i++ )
  73      {
  74          var sLine = asLines[i] ;
  75          
  76          if ( sLine.length == 0 )
  77              continue ;
  78          
  79          if ( this.Regex.DecreaseIndent.test( sLine ) )
  80              sIndentation = sIndentation.replace( this.Regex.FormatIndentatorRemove, '' ) ;
  81  
  82          sFormatted += sIndentation + sLine + '\n' ;
  83          
  84          if ( this.Regex.IncreaseIndent.test( sLine ) )
  85              sIndentation += FCKConfig.FormatIndentator ;
  86      }
  87      
  88      // Now we put back the protected data.
  89      for ( var i = 0 ; i < FCKCodeFormatter.ProtectedData.length ; i++ )
  90      {
  91          var oRegex = new RegExp( '___FCKpd___' + i ) ;
  92          sFormatted = sFormatted.replace( oRegex, FCKCodeFormatter.ProtectedData[i].replace( /\$/g, '$$$$' ) ) ;
  93      }
  94  
  95      return sFormatted.trim() ;
  96  }