/*
 * FCKeditor - The text editor for internet
 * Copyright (C) 2003-2004 Frederico Caldeira Knabben
 * 
 * Licensed under the terms of the GNU Lesser General Public License:
 * 		http://www.opensource.org/licenses/lgpl-license.php
 * 
 * For further information visit:
 * 		http://www.fckeditor.net/
 * 
 * File Name: fckcodeformatter.js
 * 	Format the HTML.
 * 
 * Version:  2.0 RC3
 * Modified: 2005-02-07 19:48:21
 * 
 * File Authors:
 * 		Frederico Caldeira Knabben (fredck@fckeditor.net)
 */

var FCKCodeFormatter = new Object() ;

FCKCodeFormatter.Regex = new Object() ;

// Regex for line breaks.
FCKCodeFormatter.Regex.BlocksOpener = /\<(P|DIV|H1|H2|H3|H4|H5|H6|ADDRESS|PRE|OL|UL|LI|TITLE|META|LINK|BASE|SCRIPT|LINK|TD|AREA|OPTION)[^\>]*\>/gi ;
FCKCodeFormatter.Regex.BlocksCloser = /\<\/(P|DIV|H1|H2|H3|H4|H5|H6|ADDRESS|PRE|OL|UL|LI|TITLE|META|LINK|BASE|SCRIPT|LINK|TD|AREA|OPTION)[^\>]*\>/gi ;

FCKCodeFormatter.Regex.NewLineTags	= /\<(BR|HR)[^\>]\>/gi ;

FCKCodeFormatter.Regex.MainTags = /\<\/?(HTML|HEAD|BODY|FORM|TABLE|TBODY|THEAD|TR)[^\>]*\>/gi ;

FCKCodeFormatter.Regex.LineSplitter = /\s*\n+\s*/g ;

// Regex for indentation.
FCKCodeFormatter.Regex.IncreaseIndent = /^\<(HTML|HEAD|BODY|FORM|TABLE|TBODY|THEAD|TR|UL|OL)[ \/\>]/i ;
FCKCodeFormatter.Regex.DecreaseIndent = /^\<\/(HTML|HEAD|BODY|FORM|TABLE|TBODY|THEAD|TR|UL|OL)[ \>]/i ;
FCKCodeFormatter.Regex.FormatIndentatorRemove = new RegExp( FCKConfig.FormatIndentator ) ;

FCKCodeFormatter.Format = function( html )
{
	// Line breaks.
	var sFormatted	= html.replace( this.Regex.BlocksOpener, '\n$&' ) ; ;
	sFormatted		= sFormatted.replace( this.Regex.BlocksCloser, '$&\n' ) ;
	sFormatted		= sFormatted.replace( this.Regex.NewLineTags, '$&\n' ) ;
	sFormatted		= sFormatted.replace( this.Regex.MainTags, '\n$&\n' ) ;
	
	// Indentation.
	var sIndentation = '' ;
	
	var asLines = sFormatted.split( this.Regex.LineSplitter ) ;
	sFormatted = '' ;
	
	for ( var i = 0 ; i < asLines.length ; i++ )
	{
		var sLine = asLines[i] ;
		
		if ( sLine.length == 0 )
			continue ;
		
		if ( this.Regex.DecreaseIndent.test( sLine ) )
			sIndentation = sIndentation.replace( this.Regex.FormatIndentatorRemove, '' ) ;

		sFormatted += sIndentation + sLine + '\n' ;
		
		if ( this.Regex.IncreaseIndent.test( sLine ) )
			sIndentation += FCKConfig.FormatIndentator ;
	}

	return sFormatted.trim() ;
}