/**
 * Date handling utilities.
 **/

Date.prototype.clone = function ()
{
	return new Date (this.getTime ());
}

Vn.Date =
{
	 WDays:
	[
		 _('Sunday')
		,_('Monday')
		,_('Tuesday')
		,_('Wednesday')
		,_('Thursday')
		,_('Friday')
		,_('Saturday')
	]
	,AbrWDays:
	[
		 _('Su')
		,_('Mo')
		,_('Tu')
		,_('We')
		,_('Th')
		,_('Fr')
		,_('Sa')
	]
	,Months:
	[
		 _('January')
		,_('February')
		,_('March')
		,_('April')
		,_('May')
		,_('June')
		,_('July')
		,_('August')
		,_('September')
		,_('October')
		,_('November')
		,_('December')
	]
	,AbrMonths:
	[
		 _('Jan')
		,_('Feb')
		,_('Mar')
		,_('Apr')
		,_('May')
		,_('Jun')
		,_('Jul')
		,_('Ago')
		,_('Sep')
		,_('Oct')
		,_('Nov')
		,_('Dec')
	]
	
	,regexp: new RegExp ('%[a-zA-Z]', 'g')

	,pad: function (number)
	{
		if (number < 10)
			return '0'+ number.toString ();

		return number.toString ();
	}
	
	,regexpFunc: function (d, token)
	{
		switch (token.charAt (1))
		{
			// Minutes with 2 digits
			case 'M': return this.pad (d.getMinutes ());

			// Hour with 2 digits in 24 hour format
			case 'H': return this.pad (d.getHours ());

			// Complete time
			case 'T': return d.toLocaleTimeString ();

			// Complete week day name
			case 'A': return this.WDays[d.getDay ()];

			// Abreviated week day name
			case 'a': return this.AbrWDays[d.getDay ()];

			// Day of month with 2 digits
			case 'd': return this.pad (d.getDate ());

			// Day of month
			case 'e': return d.getDate ();

			// Complete month name
			case 'B': return this.Months[d.getMonth ()];

			// Abreviated month name
			case 'b': return this.AbrMonths[d.getMonth ()];

			// Month number with 2 digits
			case 'm': return this.pad (d.getMonth () + 1);

			// Year with 4 digits
			case 'Y': return d.getFullYear ();
		}
		
		return token;
	}

	,strftime: function (date, format)
	{
		if (!date)
			return '';

		return format.replace (this.regexp, this.regexpFunc.bind (this, date));
	}
};