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Object.extend(Date.prototype,
{
SimpleFormat: function(format, data)
{
data = data || {};
var bits = new Array();
bits['d'] = this.getDate();
bits['dd'] = String(this.getDate()).zerofill(2);
bits['M'] = this.getMonth()+1;
bits['MM'] = String(this.getMonth()+1).zerofill(2);
if(data.AbbreviatedMonthNames)
bits['MMM'] = data.AbbreviatedMonthNames[this.getMonth()];
if(data.MonthNames)
bits['MMMM'] = data.MonthNames[this.getMonth()];
var yearStr = "" + this.getFullYear();
yearStr = (yearStr.length == 2) ? '19' + yearStr: yearStr;
bits['yyyy'] = yearStr;
bits['yy'] = bits['yyyy'].toString().substr(2,2);
// do some funky regexs to replace the format string
// with the real values
var frm = new String(format);
for (var sect in bits)
{
var reg = new RegExp("\\b"+sect+"\\b" ,"g");
frm = frm.replace(reg, bits[sect]);
}
return frm;
},
toISODate : function()
{
var y = this.getFullYear();
var m = String(this.getMonth() + 1).zerofill(2);
var d = String(this.getDate()).zerofill(2);
return String(y) + String(m) + String(d);
}
});
Object.extend(Date,
{
SimpleParse: function(value, format)
{
val=String(value);
format=String(format);
if(val.length <= 0) return null;
if(format.length <= 0) return new Date(value);
var isInteger = function (val)
{
var digits="1234567890";
for (var i=0; i < val.length; i++)
{
if (digits.indexOf(val.charAt(i))==-1) { return false; }
}
return true;
};
var getInt = function(str,i,minlength,maxlength)
{
for (var x=maxlength; x>=minlength; x--)
{
var token=str.substring(i,i+x);
if (token.length < minlength) { return null; }
if (isInteger(token)) { return token; }
}
return null;
};
var i_val=0;
var i_format=0;
var c="";
var token="";
var token2="";
var x,y;
var now=new Date();
var year=now.getFullYear();
var month=now.getMonth()+1;
var date=1;
while (i_format < format.length)
{
// Get next token from format string
c=format.charAt(i_format);
token="";
while ((format.charAt(i_format)==c) && (i_format < format.length))
{
token += format.charAt(i_format++);
}
// Extract contents of value based on format token
if (token=="yyyy" || token=="yy" || token=="y")
{
if (token=="yyyy") { x=4;y=4; }
if (token=="yy") { x=2;y=2; }
if (token=="y") { x=2;y=4; }
year=getInt(val,i_val,x,y);
if (year==null) { return null; }
i_val += year.length;
if (year.length==2)
{
if (year > 70) { year=1900+(year-0); }
else { year=2000+(year-0); }
}
}
else if (token=="MM"||token=="M")
{
month=getInt(val,i_val,token.length,2);
if(month==null||(month<1)||(month>12)){return null;}
i_val+=month.length;
}
else if (token=="dd"||token=="d")
{
date=getInt(val,i_val,token.length,2);
if(date==null||(date<1)||(date>31)){return null;}
i_val+=date.length;
}
else
{
if (val.substring(i_val,i_val+token.length)!=token) {return null;}
else {i_val+=token.length;}
}
}
// If there are any trailing characters left in the value, it doesn't match
if (i_val != val.length) { return null; }
// Is date valid for month?
if (month==2)
{
// Check for leap year
if ( ( (year%4==0)&&(year%100 != 0) ) || (year%400==0) ) { // leap year
if (date > 29){ return null; }
}
else { if (date > 28) { return null; } }
}
if ((month==4)||(month==6)||(month==9)||(month==11))
{
if (date > 30) { return null; }
}
var newdate=new Date(year,month-1,date, 0, 0, 0);
return newdate;
}
});
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