/*

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

Clipperz.Base.VERSION = "0.1";
Clipperz.Base.NAME = "Clipperz.Base";

MochiKit.Base.update(Clipperz.Base, {

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

	'__repr__': function () {
		return "[" + this.NAME + " " + this.VERSION + "]";
	},

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

	'toString': function () {
		return this.__repr__();
	},

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

	'trim': function (aValue) {
		return aValue.replace(/^\s+|\s+$/g, "");
	},

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

	'stringToByteArray': function (aValue) {
		var	result;
		var i, c;

		result = [];
		
		c = aValue.length;
		for (i=0; i<c; i++) {
			result[i] = aValue.charCodeAt(i);
		}
		
		return result;
	},
	
	//.........................................................................
	
	'byteArrayToString': function (anArrayOfBytes) {
		var	result;
		var i, c;

		result = "";

		c = anArrayOfBytes.length;
		for (i=0; i<c; i++) {
			result += String.fromCharCode(anArrayOfBytes[i]);
		}
		
		return result;
	},

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

	'getValueForKeyInFormContent': function (aFormContent, aKey) {
		return aFormContent[1][MochiKit.Base.find(aFormContent[0], aKey)];
	},

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

	'indexOfObjectInArray': function(anObject, anArray) {
		var	result;
		var	i, c;
		
		result = -1;

		c = anArray.length;
		for (i=0; ((i<c) && (result < 0)); i++) {
			if (anArray[i] === anObject) {
				result = i;
			}
		}

		return result;
	},

	'removeObjectAtIndexFromArray': function(anIndex, anArray) {
		anArray.splice(anIndex, 1);
	},
	
	'removeObjectFromArray': function(anObject, anArray) {
		var	objectIndex;
		
		objectIndex = Clipperz.Base.indexOfObjectInArray(anObject, anArray);
		if (objectIndex > -1) {
			Clipperz.Base.removeObjectAtIndexFromArray(objectIndex, anArray);
		} else {
//			jslog.error("Trying to remove an object not present in the array");
			//	TODO: raise an exception
		}
	},
	
	'removeFromArray': function(anArray, anObject) {
		return Clipperz.Base.removeObjectFromArray(anObject, anArray);
	},

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

	'splitStringAtFixedTokenSize': function(aString, aTokenSize) {
		var result;
		var	stringToProcess;
		
		stringToProcess = aString;
		result = [];
		if (stringToProcess != null) {
			while (stringToProcess.length > aTokenSize) {
				result.push(stringToProcess.substring(0, aTokenSize));
				stringToProcess = stringToProcess.substring(aTokenSize);
			}
			
			result.push(stringToProcess);
		}
		
		return result;
	},
	
	//-------------------------------------------------------------------------

	'objectType': function(anObject) {
		var result;

		if (anObject == null) {
			result = null;
		} else {
			result = typeof(anObject);
			
			if (result == "object") {
				if (anObject instanceof Array) {
					result = 'array'
				} else if (anObject.constructor == Boolean) {
					result = 'boolean'
				} else if (anObject instanceof Date) {
					result = 'date'
				} else if (anObject instanceof Error) {
					result = 'error'
				} else if (anObject instanceof Function) {
					result = 'function'
				} else if (anObject.constructor == Number) {
					result = 'number'
				} else if (anObject.constructor == String) {
					result = 'string'
				} else if (anObject instanceof Object) {
					result = 'object'
				} else {
					throw Clipperz.Base.exception.UnknownType;
				}
			}
		}
		
		return result;
	},

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

	'escapeHTML': function(aValue) {
		var result;

		result = aValue;
		result = result.replace(/</g, "&lt;");
		result = result.replace(/>/g, "&gt;");
		
		return result;
	},

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

	'deepClone': function(anObject) {
		var result;
		
		result = Clipperz.Base.evalJSON(Clipperz.Base.serializeJSON(anObject));
		
		return result;
	},

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

	'evalJSON': function(aString) {
/*
		var result;
		
		//	check for XSS injection
		if (/<script>/.test(aString)) {
			throw "error";
		}

		if (/<iframe>/.test(aString)) {
			throw "error";
		}

		result = MochiKit.Base.evalJSON(aString);
		
		return result;
*/

//		return MochiKit.Base.evalJSON(aString);
		return JSON2.parse(aString);
	},
	
	'serializeJSON': function(anObject) {
//		return MochiKit.Base.serializeJSON(anObject);
		return JSON2.stringify(anObject);
	},

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

	'sanitizeString': function(aValue) {
		var result;
		
		if (Clipperz.Base.objectType(aValue) == 'string') {
			result = aValue;
			result = result.replace(/</img,"&lt;");
			result = result.replace(/>/img,"&gt;");
		} else {
			result = aValue;
		}
		
		return result;
	},

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

	'exception': {
		'AbstractMethod': 		new MochiKit.Base.NamedError("Clipperz.Base.exception.AbstractMethod"),
		'UnknownType':    		new MochiKit.Base.NamedError("Clipperz.Base.exception.UnknownType"),
		'VulnerabilityIssue':	new MochiKit.Base.NamedError("Clipperz.Base.exception.VulnerabilityIssue") 
	},

	//-------------------------------------------------------------------------
	__syntaxFix__: "syntax fix"

});



MochiKit.Base.registerComparator('Object dummy comparator',
	function(a, b) {
		return ((a.constructor == Object) && (b.constructor == Object));
	},
	function(a, b) {
		var result;
		var aKeys;
		var bKeys;
		
//MochiKit.Logging.logDebug(">>> comparator");
//MochiKit.Logging.logDebug("- a: " + Clipperz.Base.serializeJSON(a));
//MochiKit.Logging.logDebug("- b: " + Clipperz.Base.serializeJSON(a));
		aKeys = MochiKit.Base.keys(a).sort();
		bKeys = MochiKit.Base.keys(b).sort();
		
		result = MochiKit.Base.compare(aKeys, bKeys);
//if (result != 0) {
//	MochiKit.Logging.logDebug("- comparator 'keys':");
//	MochiKit.Logging.logDebug("- comparator aKeys: " + Clipperz.Base.serializeJSON(aKeys));
//	MochiKit.Logging.logDebug("- comparator bKeys: " + Clipperz.Base.serializeJSON(bKeys));
//}
		if (result == 0) {
			var	i, c;
			
			c = aKeys.length;
			for (i=0; (i<c) && (result == 0); i++) {
				result = MochiKit.Base.compare(a[aKeys[i]], b[bKeys[i]]);
//if (result != 0) {
//	MochiKit.Logging.logDebug("- comparator 'values':");
//	MochiKit.Logging.logDebug("- comparator a[aKeys[i]]: " + Clipperz.Base.serializeJSON(a[aKeys[i]]));
//	MochiKit.Logging.logDebug("- comparator b[bKeys[i]]: " + Clipperz.Base.serializeJSON(b[bKeys[i]]));
//}
			}
		}		
		
//MochiKit.Logging.logDebug("<<< comparator - result: " + result);
		return result;
	},
	true
);