/*

Copyright 2008-2011 Clipperz Srl

This file is part of Clipperz's Javascript Crypto Library.
Javascript Crypto Library provides web developers with an extensive
and efficient set of cryptographic functions. The library aims to
obtain maximum execution speed while preserving modularity and
reusability.
For further information about its features and functionalities please
refer to http://www.clipperz.com

* Javascript Crypto Library is free software: you can redistribute
  it and/or modify it under the terms of the GNU Affero General Public
  License as published by the Free Software Foundation, either version
  3 of the License, or (at your option) any later version.

* Javascript Crypto Library is distributed in the hope that it will
  be useful, but WITHOUT ANY WARRANTY; without even the implied
  warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
  See the GNU Affero General Public License for more details.

* You should have received a copy of the GNU Affero General Public
  License along with Javascript Crypto Library.  If not, see
  <http://www.gnu.org/licenses/>.

*/

if (typeof(Clipperz) == 'undefined') { Clipperz = {}; }


Clipperz.KeePassExportProcessor = function(args) {
	args = args || {};

	return this;
}

//=============================================================================

Clipperz.KeePassExportProcessor.prototype = MochiKit.Base.update(null, {

	//-------------------------------------------------------------------------

	'deferredParse_core': function(aContext) {
		var deferredResult;

		if (aContext.line == "") {
			deferredResult = MochiKit.Async.succeed(aContext.result);
		} else {
			var record;
			
			record = this.parseRecord(aContext);
			if (record != null) {
				aContext.result.push(record);
			}

			aContext.line = aContext.line.replace(/^\n*/g, "").replace(/\n$/g, "");
			
			deferredResult = new Clipperz.Async.Deferred("KeePassExportProcessor.deferredParse_core");
			deferredResult.addCallbackPass(MochiKit.Signal.signal, this, 'importProcessorProgressUpdate', {status:'processing', size:aContext.size, progress:(aContext.size - aContext.line.length)});
			deferredResult.addCallback(MochiKit.Async.wait, 0.2);
			deferredResult.addMethod(this, 'deferredParse_core');
			deferredResult.callback(aContext);
		}

		return deferredResult;
	},
	
	//.........................................................................
	
	'deferredParse': function(aValue) {
		var deferredResult;
		var lines;
		var context;

		lines = aValue.replace(/\r?\n/g, "\n");
		context = {
			line: lines,
			size: lines.length,
			result: []
		}

		deferredResult = new Clipperz.Async.Deferred("KeePassExportProcessor.deferredResult");
		deferredResult.addMethod(this, 'deferredParse_core');
		deferredResult.callback(context);

		return deferredResult;
	},

	//-------------------------------------------------------------------------

	'parseRecord': function(aContext) {
		var result;
		var recordLabelRegexp;
		var	fieldLabelRegexp;
		var fieldValueRegexp;
		var fullLineRegexp;
/*
[Record name]
Group Tree: 
UserName: 
URL: 
Password: 
Notes: test
UUID: 525f62430079bae48b79ed2961924b05
Icon: 0
Creation Time: 2007-06-26 17:56:03
Last Access: 2007-10-25 16:23:51
Last Modification: 2007-10-25 16:23:51
Expires: 2999-12-28 23:59:59

[Record name]								==> Title
Group: General								==> Group
Group Tree: 								==> Group Tree
UserName: 									==> UserName
URL: 										==>	URL
Password: 									==>	Password
Notes: test									==>	Notes
UUID: 525f62430079bae48b79ed2961924b05		==>	UUID
Icon: 0										==>	Icon
Creation Time: 2007-06-26 17:56:03			==>	Creation Time
Last Access: 2007-10-25 16:23:51			==>	Last Access
Last Modification: 2007-10-25 16:23:51		==>	Last Modification
Expires: 2999-12-28 23:59:59				==> Expires
Attachment Description:						==> Attachment Description
Attachment:									==> Attachment
*/
//		recordLabelRegexp = new RegExp("(^\\[(.*)\\]\\n|^Title:\s*(.*)\\n)");
		recordLabelRegexp = new RegExp("^\\[(.*)\\]\\n|^Title:\s*(.*)\\n");
		fieldLabelRegexp = new RegExp("^\s?(Group|Group Tree|Username|UserName|User Name|Url|URL|Password|Notes|Comment|UUID|Icon|Creation Time|Last Access|Last Modification|Expires|Attachment Description|Attachment|Valid until): ");
		fieldValueRegexp = new RegExp("(.*)(\\n|$)");
		fullLineRegexp = new RegExp("^(.*\\n)");

		if (recordLabelRegexp.test(aContext.line) == true) {
			var line;
			
			line = aContext.line;
			
			result = {};
			result['Title'] = line.match(recordLabelRegexp)[1];
			line = line.replace(/^.*\n/, "");
			while (fieldLabelRegexp.test(line) == true) {
				var fieldName;
				var fieldValue;
				
				fieldName = RegExp.$1;
				line = RegExp.rightContext;
				
				fieldValue = line.match(fieldValueRegexp)[1];
				line = RegExp.rightContext;

				if (fieldName == 'Notes') {
					var isMultiline;
					
					isMultiline = false;
					
					if ((line != "") && (fieldLabelRegexp.test(line) == false) && (recordLabelRegexp.test(line) == false)) {
						fieldValue += '\n';
					}
					
					while ((line != "") && (fieldLabelRegexp.test(line) == false) && (recordLabelRegexp.test(line) == false)) {
						var newLineValue;
						
						newLineValue = line.match(fullLineRegexp)[1];
						if (newLineValue != "\n") {
							isMultiline = true;
						}
						fieldValue += newLineValue;
						line = RegExp.rightContext;
					}

					if (isMultiline) {
						fieldValue = fieldValue.replace(/\n$/g, "");
					} else {
						fieldValue = fieldValue.replace(/\n\n$/g, "");
					}
					
					line = line.replace(/^\n/, '');
				}
				
				result[fieldName] = fieldValue;
			}
		} else {
			result = null;
		}
		
		aContext.line = line;
		
		return result;
	},

	//-------------------------------------------------------------------------
	__syntaxFix__: "syntax fix"
});


