ÿþ/*

 * Date prototype extensions. Doesn't depend on any

 * other code. Doens't overwrite existing methods.

 *

 * Adds dayNames, abbrDayNames, monthNames and abbrMonthNames static properties and isLeapYear,

 * isWeekend, isWeekDay, getDaysInMonth, getDayName, getMonthName, getDayOfYear, getWeekOfYear,

 * setDayOfYear, addYears, addMonths, addDays, addHours, addMinutes, addSeconds methods

 *

 * Copyright (c) 2006 Jörn Zaefferer and Brandon Aaron (brandon.aaron@gmail.com || http://brandonaaron.net)

 *

 * Additional methods and properties added by Kelvin Luck: firstDayOfWeek, dateFormat, zeroTime, asString, fromString -

 * I've added my name to these methods so you know who to blame if they are broken!

 * 

 * Dual licensed under the MIT and GPL licenses:

 *   http://www.opensource.org/licenses/mit-license.php

 *   http://www.gnu.org/licenses/gpl.html

 *

 */



/**

 * An Array of day names starting with Pazar.

 * 

 * @example dayNames[0]

 * @result 'Pazar'

 *

 * @name dayNames

 * @type Array

 * @cat Plugins/Methods/Date

 */

Date.dayNames = ['Pazar', 'Pazartesi', 'Sal1
', 'Çar_
amba', 'Per_
embe', 'Cuma', 'Cumartesi'];



/**

 * An Array of abbreviated day names starting with Sun.

 * 

 * @example abbrDayNames[0]

 * @result 'Sun'

 *

 * @name abbrDayNames

 * @type Array

 * @cat Plugins/Methods/Date

 */

Date.abbrDayNames = ['Pz', 'Pzt', 'Sal1
', 'Çr_
', 'Per_
', 'Cm', 'Cmt'];



/**

 * An Array of month names starting with Janurary.

 * 

 * @example monthNames[0]

 * @result 'Ocak'

 *

 * @name monthNames

 * @type Array

 * @cat Plugins/Methods/Date

 */

Date.monthNames = ['Ocak', '^
ubat', 'Mart', 'Nisan', 'May1
s', 'Haziran', 'Temmuz', 'A
ustos', 'Eylül', 'Ekim', 'Kas1
m', 'Aral1
k'];



/**

 * An Array of abbreviated month names starting with Jan.

 * 

 * @example abbrMonthNames[0]

 * @result 'Jan'

 *

 * @name monthNames

 * @type Array

 * @cat Plugins/Methods/Date

 */

Date.abbrMonthNames = ['Oc', '^
ub', 'Mar', 'Nis', 'May', 'Haz', 'Tem', 'A
u', 'Ey', 'Ek', 'Kas', 'Ara'];



/**

 * The first day of the week for this locale.

 *

 * @name firstDayOfWeek

 * @type Number

 * @cat Plugins/Methods/Date

 * @author Kelvin Luck

 */

Date.firstDayOfWeek = 1;



/**

 * The format that string dates should be represented as (e.g. 'dd/mm/yyyy' for UK, 'mm/dd/yyyy' for US, 'yyyy-mm-dd' for Unicode etc).

 *

 * @name format

 * @type String

 * @cat Plugins/Methods/Date

 * @author Kelvin Luck

 */

Date.format = 'mm/dd/yyyy';

//Date.format = 'mm/dd/yyyy';

//Date.format = 'yyyy-mm-dd';

//Date.format = 'dd mmm yy';



/**

 * The first two numbers in the century to be used when decoding a two digit year. Since a two digit year is ambiguous (and date.setYear

 * only works with numbers < 99 and so doesn't allow you to set years after 2000) we need to use this to disambiguate the two digit year codes.

 *

 * @name format

 * @type String

 * @cat Plugins/Methods/Date

 * @author Kelvin Luck

 */

Date.fullYearStart = '20';



(function() {



	/**

	 * Adds a given method under the given name 

	 * to the Date prototype if it doesn't

	 * currently exist.

	 *

	 * @private

	 */

	function add(name, method) {

		if( !Date.prototype[name] ) {

			Date.prototype[name] = method;

		}

	};

	

	/**

	 * Checks if the year is a leap year.

	 *

	 * @example var dtm = new Date("01/12/2008");

	 * dtm.isLeapYear();

	 * @result true

	 *

	 * @name isLeapYear

	 * @type Boolean

	 * @cat Plugins/Methods/Date

	 */

	add("isLeapYear", function() {

		var y = this.getFullYear();

		return (y%4==0 && y%100!=0) || y%400==0;

	});

	

	/**

	 * Checks if the day is a weekend day (Sat or Sun).

	 *

	 * @example var dtm = new Date("01/12/2008");

	 * dtm.isWeekend();

	 * @result false

	 *

	 * @name isWeekend

	 * @type Boolean

	 * @cat Plugins/Methods/Date

	 */

	add("isWeekend", function() {

		return this.getDay()==0 || this.getDay()==6;

	});

	

	/**

	 * Check if the day is a day of the week (Mon-Fri)

	 * 

	 * @example var dtm = new Date("01/12/2008");

	 * dtm.isWeekDay();

	 * @result false

	 * 

	 * @name isWeekDay

	 * @type Boolean

	 * @cat Plugins/Methods/Date

	 */

	add("isWeekDay", function() {

		return !this.isWeekend();

	});

	

	/**

	 * Gets the number of days in the month.

	 * 

	 * @example var dtm = new Date("01/12/2008");

	 * dtm.getDaysInMonth();

	 * @result 31

	 * 

	 * @name getDaysInMonth

	 * @type Number

	 * @cat Plugins/Methods/Date

	 */

	add("getDaysInMonth", function() {

		return [31,(this.isLeapYear() ? 29:28),31,30,31,30,31,31,30,31,30,31][this.getMonth()];

	});

	

	/**

	 * Gets the name of the day.

	 * 

	 * @example var dtm = new Date("01/12/2008");

	 * dtm.getDayName();

	 * @result 'Cumartesi'

	 * 

	 * @example var dtm = new Date("01/12/2008");

	 * dtm.getDayName(true);

	 * @result 'Sat'

	 * 

	 * @param abbreviated Boolean When set to true the name will be abbreviated.

	 * @name getDayName

	 * @type String

	 * @cat Plugins/Methods/Date

	 */

	add("getDayName", function(abbreviated) {

		return abbreviated ? Date.abbrDayNames[this.getDay()] : Date.dayNames[this.getDay()];

	});



	/**

	 * Gets the name of the month.

	 * 

	 * @example var dtm = new Date("01/12/2008");

	 * dtm.getMonthName();

	 * @result 'Janurary'

	 *

	 * @example var dtm = new Date("01/12/2008");

	 * dtm.getMonthName(true);

	 * @result 'Jan'

	 * 

	 * @param abbreviated Boolean When set to true the name will be abbreviated.

	 * @name getDayName

	 * @type String

	 * @cat Plugins/Methods/Date

	 */

	add("getMonthName", function(abbreviated) {

		return abbreviated ? Date.abbrMonthNames[this.getMonth()] : Date.monthNames[this.getMonth()];

	});



	/**

	 * Get the number of the day of the year.

	 * 

	 * @example var dtm = new Date("01/12/2008");

	 * dtm.getDayOfYear();

	 * @result 11

	 * 

	 * @name getDayOfYear

	 * @type Number

	 * @cat Plugins/Methods/Date

	 */

	add("getDayOfYear", function() {

		var tmpdtm = new Date("1/1/" + this.getFullYear());

		return Math.floor((this.getTime() - tmpdtm.getTime()) / 86400000);

	});

	

	/**

	 * Get the number of the week of the year.

	 * 

	 * @example var dtm = new Date("01/12/2008");

	 * dtm.getWeekOfYear();

	 * @result 2

	 * 

	 * @name getWeekOfYear

	 * @type Number

	 * @cat Plugins/Methods/Date

	 */

	add("getWeekOfYear", function() {

		return Math.ceil(this.getDayOfYear() / 7);

	});



	/**

	 * Set the day of the year.

	 * 

	 * @example var dtm = new Date("01/12/2008");

	 * dtm.setDayOfYear(1);

	 * dtm.toString();

	 * @result 'Tue Jan 01 2008 00:00:00'

	 * 

	 * @name setDayOfYear

	 * @type Date

	 * @cat Plugins/Methods/Date

	 */

	add("setDayOfYear", function(day) {

		this.setMonth(0);

		this.setDate(day);

		return this;

	});

	

	/**

	 * Add a number of years to the date object.

	 * 

	 * @example var dtm = new Date("01/12/2008");

	 * dtm.addYears(1);

	 * dtm.toString();

	 * @result 'Mon Jan 12 2009 00:00:00'

	 * 

	 * @name addYears

	 * @type Date

	 * @cat Plugins/Methods/Date

	 */

	add("addYears", function(num) {

		this.setFullYear(this.getFullYear() + num);

		return this;

	});

	

	/**

	 * Add a number of months to the date object.

	 * 

	 * @example var dtm = new Date("01/12/2008");

	 * dtm.addMonths(1);

	 * dtm.toString();

	 * @result 'Tue Feb 12 2008 00:00:00'

	 * 

	 * @name addMonths

	 * @type Date

	 * @cat Plugins/Methods/Date

	 */

	add("addMonths", function(num) {

		var tmpdtm = this.getDate();

		

		this.setMonth(this.getMonth() + num);

		

		if (tmpdtm > this.getDate())

			this.addDays(-this.getDate());

		

		return this;

	});

	

	/**

	 * Add a number of days to the date object.

	 * 

	 * @example var dtm = new Date("01/12/2008");

	 * dtm.addDays(1);

	 * dtm.toString();

	 * @result 'Sun Jan 13 2008 00:00:00'

	 * 

	 * @name addDays

	 * @type Date

	 * @cat Plugins/Methods/Date

	 */

	add("addDays", function(num) {

		//this.setDate(this.getDate() + num);

		this.setTime(this.getTime() + (num*86400000) );

		return this;

	});

	

	/**

	 * Add a number of hours to the date object.

	 * 

	 * @example var dtm = new Date("01/12/2008");

	 * dtm.addHours(24);

	 * dtm.toString();

	 * @result 'Sun Jan 13 2008 00:00:00'

	 * 

	 * @name addHours

	 * @type Date

	 * @cat Plugins/Methods/Date

	 */

	add("addHours", function(num) {

		this.setHours(this.getHours() + num);

		return this;

	});



	/**

	 * Add a number of minutes to the date object.

	 * 

	 * @example var dtm = new Date("01/12/2008");

	 * dtm.addMinutes(60);

	 * dtm.toString();

	 * @result 'Sat Jan 12 2008 01:00:00'

	 * 

	 * @name addMinutes

	 * @type Date

	 * @cat Plugins/Methods/Date

	 */

	add("addMinutes", function(num) {

		this.setMinutes(this.getMinutes() + num);

		return this;

	});

	

	/**

	 * Add a number of seconds to the date object.

	 * 

	 * @example var dtm = new Date("01/12/2008");

	 * dtm.addSeconds(60);

	 * dtm.toString();

	 * @result 'Sat Jan 12 2008 00:01:00'

	 * 

	 * @name addSeconds

	 * @type Date

	 * @cat Plugins/Methods/Date

	 */

	add("addSeconds", function(num) {

		this.setSeconds(this.getSeconds() + num);

		return this;

	});

	

	/**

	 * Sets the time component of this Date to zero for cleaner, easier comparison of dates where time is not relevant.

	 * 

	 * @example var dtm = new Date();

	 * dtm.zeroTime();

	 * dtm.toString();

	 * @result 'Sat Jan 12 2008 00:01:00'

	 * 

	 * @name zeroTime

	 * @type Date

	 * @cat Plugins/Methods/Date

	 * @author Kelvin Luck

	 */

	add("zeroTime", function() {

		this.setMilliseconds(0);

		this.setSeconds(0);

		this.setMinutes(0);

		this.setHours(0);

		return this;

	});

	

	/**

	 * Returns a string representation of the date object according to Date.format.

	 * (Date.toString May1
s be used in other places so I purposefully didn't overwrite it)

	 * 

	 * @example var dtm = new Date("01/12/2008");

	 * dtm.asString();

	 * @result '12/01/2008' // (where Date.format == 'dd/mm/yyyy'

	 * 

	 * @name asString

	 * @type Date

	 * @cat Plugins/Methods/Date

	 * @author Kelvin Luck

	 */

	add("asString", function(format) {

		var r = format || Date.format;

		if (r.split('mm').length>1) { // ugly workaround to make sure we don't replace the m's in e.g. Kas1
m

			r = r.split('mmmm').join(this.getMonthName(false))

				.split('mmm').join(this.getMonthName(true))

				.split('mm').join(_zeroPad(this.getMonth()+1))

		} else {

			r = r.split('m').join(this.getMonth()+1);

		}

		r = r.split('yyyy').join(this.getFullYear())

			.split('yy').join((this.getFullYear() + '').substring(2))

			.split('dd').join(_zeroPad(this.getDate()))

			.split('d').join(this.getDate());

		return r;

	});

	

	/**

	 * Returns a new date object created from the passed String according to Date.format or false if the attempt to do this results in an invalid date object

	 * (We can't simple use Date.parse as it's not aware of locale and I chose not to overwrite it incase it's functionality is being relied on elsewhere)

	 *

	 * @example var dtm = Date.fromString("12/01/2008");

	 * dtm.toString();

	 * @result 'Sat Jan 12 2008 00:00:00' // (where Date.format == 'dd/mm/yyyy'

	 * 

	 * @name fromString

	 * @type Date

	 * @cat Plugins/Methods/Date

	 * @author Kelvin Luck

	 */

	Date.fromString = function(s)

	{

		var f = Date.format;

		

		var d = new Date('01/01/1970');

		

		if (s == '') return d;



		s = s.toLowerCase();

		var matcher = '';

		var order = [];

		var r = /(dd?d?|mm?m?|yy?yy?)+([^(m|d|y)])?/g;

		var results;

		while ((results = r.exec(f)) != null)

		{

			switch (results[1]) {

				case 'd':

				case 'dd':

				case 'm':

				case 'mm':

				case 'yy':

				case 'yyyy':

					matcher += '(\\d+\\d?\\d?\\d?)+';

					order.push(results[1].substr(0, 1));

					break;

				case 'mmm':

					matcher += '([a-z]{3})';

					order.push('M');

					break;

			}

			if (results[2]) {

				matcher += results[2];

			}

			

		}

		var dm = new RegExp(matcher);

		var result = s.match(dm);

		for (var i=0; i<order.length; i++) {

			var res = result[i+1];

			switch(order[i]) {

				case 'd':

					d.setDate(res);

					break;

				case 'm':

					d.setMonth(Number(res)-1);

					break;

				case 'M':

					for (var j=0; j<Date.abbrMonthNames.length; j++) {

						if (Date.abbrMonthNames[j].toLowerCase() == res) break;

					}

					d.setMonth(j);

					break;

				case 'y':

					d.setYear(res);

					break;

			}

		}



		return d;

	};

	

	// utility method

	var _zeroPad = function(num) {

		var s = '0'+num;

		return s.substring(s.length-2)

		//return ('0'+num).substring(-2); // doesn't work on IE :(

	};

	

})();