removed the extensions to Date, put them in their own library

This commit is contained in:
Gareth Jones 2011-07-08 08:15:13 +10:00
parent 8eaff77974
commit 8767cda15f
2 changed files with 83 additions and 0 deletions

60
lib/date_format.js Normal file
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exports.ISO8601_FORMAT = "yyyy-MM-dd hh:mm:ss.SSS";
exports.ISO8601_WITH_TZ_OFFSET_FORMAT = "yyyy-MM-ddThh:mm:ssO";
exports.DATETIME_FORMAT = "dd MM yyyy hh:mm:ss.SSS";
exports.ABSOLUTETIME_FORMAT = "hh:mm:ss.SSS";
exports.asString = function(/*format,*/ date) {
var format = exports.ISO8601_FORMAT;
if (typeof(date) === "string") {
format = arguments[0];
date = arguments[1];
}
var vDay = addZero(date.getDate());
var vMonth = addZero(date.getMonth()+1);
var vYearLong = addZero(date.getFullYear());
var vYearShort = addZero(date.getFullYear().toString().substring(3,4));
var vYear = (format.indexOf("yyyy") > -1 ? vYearLong : vYearShort);
var vHour = addZero(date.getHours());
var vMinute = addZero(date.getMinutes());
var vSecond = addZero(date.getSeconds());
var vMillisecond = padWithZeros(date.getMilliseconds(), 3);
var vTimeZone = offset(date);
var formatted = format
.replace(/dd/g, vDay)
.replace(/MM/g, vMonth)
.replace(/y{1,4}/g, vYear)
.replace(/hh/g, vHour)
.replace(/mm/g, vMinute)
.replace(/ss/g, vSecond)
.replace(/SSS/g, vMillisecond)
.replace(/O/g, vTimeZone);
return formatted;
function padWithZeros(vNumber, width) {
var numAsString = vNumber + "";
while (numAsString.length < width) {
numAsString = "0" + numAsString;
}
return numAsString;
}
function addZero(vNumber) {
return padWithZeros(vNumber, 2);
}
/**
* Formats the TimeOffest
* Thanks to http://www.svendtofte.com/code/date_format/
* @private
*/
function offset(date) {
// Difference to Greenwich time (GMT) in hours
var os = Math.abs(date.getTimezoneOffset());
var h = String(Math.floor(os/60));
var m = String(os%60);
h.length == 1? h = "0"+h:1;
m.length == 1? m = "0"+m:1;
return date.getTimezoneOffset() < 0 ? "+"+h+m : "-"+h+m;
}
};

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test/date_format.js Normal file
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var vows = require('vows')
, assert = require('assert')
, dateFormat = require('../lib/date_format');
vows.describe('date_format').addBatch({
'Date extensions': {
topic: function() {
return new Date(2010, 0, 11, 14, 31, 30, 5);
},
'should format a date as string using a pattern': function(date) {
assert.equal(
dateFormat.asString(dateFormat.DATETIME_FORMAT, date),
"11 01 2010 14:31:30.005"
);
},
'should default to the ISO8601 format': function(date) {
assert.equal(
dateFormat.asString(date),
'2010-01-11 14:31:30.005'
);
}
}
}).export(module);