/**
 * Date instance methods
 *
 * @author Ken Snyder (ken d snyder at gmail dot com)
 * @date 2008-09-10
 * @version 2.0.2 (http://kendsnyder.com/sandbox/date/)
 * @license Creative Commons Attribution License 3.0 (http://creativecommons.org/licenses/by/3.0/)
 * http://kendsnyder.com/sandbox/date/#src
 */
(function(){var day=24*60*60*1000;var zeroPad=function(number,digits){number=String(number);while(number.length<digits)number='0'+number;return number;};var multipliers={millisecond:1,second:1000,minute:60*1000,hour:60*60*1000,day:day,week:7*day,month:{add:function(d,number){multipliers.year.add(d,Math[number>0?'floor':'ceil'](number/12));var prevMonth=d.getMonth()+(number%12);if(prevMonth==12){prevMonth=0;d.setYear(d.getFullYear()+1);}else if(prevMonth==-1){prevMonth=11;d.setYear(d.getFullYear()-1);}
d.setMonth(prevMonth);},diff:function(d1,d2){var diffYears=d1.getFullYear()-d2.getFullYear();var diffMonths=d1.getMonth()-d2.getMonth()+(diffYears*12);var diffDays=d1.getDate()-d2.getDate();return diffMonths+(diffDays/30);}},year:{add:function(d,number){d.setYear(d.getFullYear()+Math[number>0?'floor':'ceil'](number));},diff:function(d1,d2){return multipliers.month.diff(d1,d2)/12;}}};for(var unit in multipliers){if(unit.substring(unit.length-1)!='s'){multipliers[unit+'s']=multipliers[unit];}}
var format=function(d,code){if(Date.prototype.strftime.formatShortcuts[code]){return d.strftime(Date.prototype.strftime.formatShortcuts[code]);}else{var getter=(Date.prototype.strftime.formatCodes[code]||'').split('.');var nbr=d['get'+getter[0]]?d['get'+getter[0]]():'';if(getter[1])nbr=zeroPad(nbr,getter[1]);return nbr;}};var instanceMethods={succ:function(unit){return this.clone().add(1,unit);},add:function(number,unit){var factor=multipliers[unit]||multipliers.day;if(typeof factor=='number'){this.setTime(this.getTime()+(factor*number));}else{factor.add(this,number);}
return this;},diff:function(dateObj,unit,allowDecimal){dateObj=Date.create(dateObj);if(dateObj===null)return null;var factor=multipliers[unit]||multipliers.day;if(typeof factor=='number'){var unitDiff=(this.getTime()-dateObj.getTime())/factor;}else{var unitDiff=factor.diff(this,dateObj);}
return(allowDecimal?unitDiff:Math[unitDiff>0?'floor':'ceil'](unitDiff));},strftime:function(formatStr){var source=formatStr||'%Y-%m-%d',result='',match;while(source.length>0){if(match=source.match(Date.prototype.strftime.formatCodes.matcher)){result+=source.slice(0,match.index);result+=(match[1]||'')+format(this,match[2]);source=source.slice(match.index+match[0].length);}else{result+=source,source='';}}
return result;},getShortYear:function(){return this.getYear()%100;},getMonthNumber:function(){return this.getMonth()+1;},getMonthName:function(){return Date.MONTHNAMES[this.getMonth()];},getAbbrMonthName:function(){return Date.ABBR_MONTHNAMES[this.getMonth()];},getDayName:function(){return Date.DAYNAMES[this.getDay()];},getAbbrDayName:function(){return Date.ABBR_DAYNAMES[this.getDay()];},getDayOrdinal:function(){return Date.ORDINALNAMES[this.getDate()%10];},getHours12:function(){var hours=this.getHours();return hours>12?hours-12:(hours==0?12:hours);},getAmPm:function(){return this.getHours()>=12?'PM':'AM';},getUnix:function(){return Math.round(this.getTime()/1000,0);},getGmtOffset:function(){var hours=this.getTimezoneOffset()/60;var prefix=hours<0?'+':'-';hours=Math.abs(hours);return prefix+zeroPad(Math.floor(hours),2)+':'+zeroPad((hours%1)*60,2);},getTimezoneName:function(){var match=/(?:\((.+)\)$| ([A-Z]{3}) )/.exec(this.toString());return match[1]||match[2]||'GMT'+this.getGmtOffset();},toYmdInt:function(){return(this.getFullYear()*10000)+(this.getMonthNumber()*100)+this.getDate();},clone:function(){return new Date(this.getTime());}};for(var name in instanceMethods)Date.prototype[name]=instanceMethods[name];var staticMethods={create:function(date){if(date instanceof Date)return date;if(typeof date=='number')return new Date(date*1000);var parsable=String(date).replace(/^\s*(.+)\s*$/,'$1'),i=0,length=Date.create.patterns.length,pattern;var current=parsable;while(i<length){ms=Date.parse(current);if(!isNaN(ms))return new Date(ms);pattern=Date.create.patterns[i];if(typeof pattern=='function'){obj=pattern(current);if(obj instanceof Date)return obj;}else{current=parsable.replace(pattern[0],pattern[1]);}
i++;}
return NaN;},MONTHNAMES:'January February March April May June July August September October November December'.split(' '),ABBR_MONTHNAMES:'Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec'.split(' '),DAYNAMES:'Sunday Monday Tuesday Wednesday Thursday Friday Saturday'.split(' '),ABBR_DAYNAMES:'Sun Mon Tue Wed Thu Fri Sat'.split(' '),ORDINALNAMES:'th st nd rd th th th th th th'.split(' '),ISO:'%Y-%m-%dT%H:%M:%S.%N%G',SQL:'%Y-%m-%d %H:%M:%S',daysInMonth:function(year,month){if(month==2)
return new Date(year,1,29).getDate()==29?29:28;return[undefined,31,undefined,31,30,31,30,31,31,30,31,30,31][month];}};for(var name in staticMethods)Date[name]=staticMethods[name];Date.prototype.strftime.formatCodes={matcher:/()%(#?(%|[a-z]))/i,Y:'FullYear',y:'ShortYear.2',m:'MonthNumber.2','#m':'MonthNumber',B:'MonthName',b:'AbbrMonthName',d:'Date.2','#d':'Date',e:'Date',A:'DayName',a:'AbbrDayName',w:'Day',o:'DayOrdinal',H:'Hours.2','#H':'Hours',I:'Hours12.2','#I':'Hours12',p:'AmPm',M:'Minutes.2','#M':'Minutes',S:'Seconds.2','#S':'Seconds',s:'Unix',N:'Milliseconds.3','#N':'Milliseconds',O:'TimezoneOffset',Z:'TimezoneName',G:'GmtOffset'};Date.prototype.strftime.formatShortcuts={F:'%Y-%m-%d',T:'%H:%M:%S',X:'%H:%M:%S',x:'%m/%d/%y',D:'%m/%d/%y','#c':'%a %b %e %H:%M:%S %Y',v:'%e-%b-%Y',R:'%H:%M',r:'%I:%M:%S %p',t:'\t',n:'\n','%':'%'};Date.create.patterns=[[/-/g,'/'],[/st|nd|rd|th/g,''],[/(3[01]|[0-2]\d)\s*\.\s*(1[0-2]|0\d)\s*\.\s*([1-9]\d{3})/,'$2/$1/$3'],[/([1-9]\d{3})\s*-\s*(1[0-2]|0\d)\s*-\s*(3[01]|[0-2]\d)/,'$2/$3/$1'],function(str){var match=str.match(/^(?:(.+)\s+)?([1-9]|1[012])(?:\s*\:\s*(\d\d))?(?:\s*\:\s*(\d\d))?\s*(am|pm)\s*$/i);if(match){if(match[1]){var d=Date.create(match[1]);if(isNaN(d))return;}else{var d=new Date();d.setMilliseconds(0);}
var hour=parseFloat(match[2]);hour=match[5].toLowerCase()=='am'?(hour==12?0:hour):(hour==12?12:hour+12);d.setHours(hour,parseFloat(match[3]||0),parseFloat(match[4]||0));return d;}}];})();var $D=Date.create;