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1318 alexandre_ 1 
/*
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	Copyright (c) 2004-2006, The Dojo Foundation
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	All Rights Reserved.
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	Licensed under the Academic Free License version 2.1 or above OR the
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	modified BSD license. For more information on Dojo licensing, see:
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		http://dojotoolkit.org/community/licensing.shtml
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*/
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1422 alexandre_ 11 
 
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1318 alexandre_ 13 
dojo.provide("dojo.date.common");
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dojo.date.setDayOfYear = function (dateObject, dayOfYear) {
15 
	dateObject.setMonth(0);
16 
	dateObject.setDate(dayOfYear);
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	return dateObject;
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};
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dojo.date.getDayOfYear = function (dateObject) {
20 
	var fullYear = dateObject.getFullYear();
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	var lastDayOfPrevYear = new Date(fullYear - 1, 11, 31);
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	return Math.floor((dateObject.getTime() - lastDayOfPrevYear.getTime()) / 86400000);
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};
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dojo.date.setWeekOfYear = function (dateObject, week, firstDay) {
25 
	if (arguments.length == 1) {
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		firstDay = 0;
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	}
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	dojo.unimplemented("dojo.date.setWeekOfYear");
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};
30 
dojo.date.getWeekOfYear = function (dateObject, firstDay) {
31 
	if (arguments.length == 1) {
32 
		firstDay = 0;
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	}
34 
	var firstDayOfYear = new Date(dateObject.getFullYear(), 0, 1);
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	var day = firstDayOfYear.getDay();
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	firstDayOfYear.setDate(firstDayOfYear.getDate() - day + firstDay - (day > firstDay ? 7 : 0));
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	return Math.floor((dateObject.getTime() - firstDayOfYear.getTime()) / 604800000);
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};
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dojo.date.setIsoWeekOfYear = function (dateObject, week, firstDay) {
40 
	if (arguments.length == 1) {
41 
		firstDay = 1;
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	}
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	dojo.unimplemented("dojo.date.setIsoWeekOfYear");
44 
};
45 
dojo.date.getIsoWeekOfYear = function (dateObject, firstDay) {
46 
	if (arguments.length == 1) {
47 
		firstDay = 1;
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	}
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	dojo.unimplemented("dojo.date.getIsoWeekOfYear");
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};
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dojo.date.shortTimezones = ["IDLW", "BET", "HST", "MART", "AKST", "PST", "MST", "CST", "EST", "AST", "NFT", "BST", "FST", "AT", "GMT", "CET", "EET", "MSK", "IRT", "GST", "AFT", "AGTT", "IST", "NPT", "ALMT", "MMT", "JT", "AWST", "JST", "ACST", "AEST", "LHST", "VUT", "NFT", "NZT", "CHAST", "PHOT", "LINT"];
52 
dojo.date.timezoneOffsets = [-720, -660, -600, -570, -540, -480, -420, -360, -300, -240, -210, -180, -120, -60, 0, 60, 120, 180, 210, 240, 270, 300, 330, 345, 360, 390, 420, 480, 540, 570, 600, 630, 660, 690, 720, 765, 780, 840];
53 
dojo.date.getDaysInMonth = function (dateObject) {
54 
	var month = dateObject.getMonth();
55 
	var days = [31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31];
56 
	if (month == 1 && dojo.date.isLeapYear(dateObject)) {
57 
		return 29;
58 
	} else {
59 
		return days[month];
60 
	}
61 
};
62 
dojo.date.isLeapYear = function (dateObject) {
63 
	var year = dateObject.getFullYear();
64 
	return (year % 400 == 0) ? true : (year % 100 == 0) ? false : (year % 4 == 0) ? true : false;
65 
};
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dojo.date.getTimezoneName = function (dateObject) {
67 
	var str = dateObject.toString();
68 
	var tz = "";
69 
	var match;
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	var pos = str.indexOf("(");
71 
	if (pos > -1) {
72 
		pos++;
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		tz = str.substring(pos, str.indexOf(")"));
74 
	} else {
75 
		var pat = /([A-Z\/]+) \d{4}$/;
76 
		if ((match = str.match(pat))) {
77 
			tz = match[1];
78 
		} else {
79 
			str = dateObject.toLocaleString();
80 
			pat = / ([A-Z\/]+)$/;
81 
			if ((match = str.match(pat))) {
82 
				tz = match[1];
83 
			}
84 
		}
85 
	}
86 
	return tz == "AM" || tz == "PM" ? "" : tz;
87 
};
88 
dojo.date.getOrdinal = function (dateObject) {
89 
	var date = dateObject.getDate();
90 
	if (date % 100 != 11 && date % 10 == 1) {
91 
		return "st";
92 
	} else {
93 
		if (date % 100 != 12 && date % 10 == 2) {
94 
			return "nd";
95 
		} else {
96 
			if (date % 100 != 13 && date % 10 == 3) {
97 
				return "rd";
98 
			} else {
99 
				return "th";
100 
			}
101 
		}
102 
	}
103 
};
104 
dojo.date.compareTypes = {DATE:1, TIME:2};
105 
dojo.date.compare = function (dateA, dateB, options) {
106 
	var dA = dateA;
107 
	var dB = dateB || new Date();
108 
	var now = new Date();
109 
	with (dojo.date.compareTypes) {
110 
		var opt = options || (DATE | TIME);
111 
		var d1 = new Date((opt & DATE) ? dA.getFullYear() : now.getFullYear(), (opt & DATE) ? dA.getMonth() : now.getMonth(), (opt & DATE) ? dA.getDate() : now.getDate(), (opt & TIME) ? dA.getHours() : 0, (opt & TIME) ? dA.getMinutes() : 0, (opt & TIME) ? dA.getSeconds() : 0);
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		var d2 = new Date((opt & DATE) ? dB.getFullYear() : now.getFullYear(), (opt & DATE) ? dB.getMonth() : now.getMonth(), (opt & DATE) ? dB.getDate() : now.getDate(), (opt & TIME) ? dB.getHours() : 0, (opt & TIME) ? dB.getMinutes() : 0, (opt & TIME) ? dB.getSeconds() : 0);
113 
	}
114 
	if (d1.valueOf() > d2.valueOf()) {
115 
		return 1;
116 
	}
117 
	if (d1.valueOf() < d2.valueOf()) {
118 
		return -1;
119 
	}
120 
	return 0;
121 
};
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dojo.date.dateParts = {YEAR:0, MONTH:1, DAY:2, HOUR:3, MINUTE:4, SECOND:5, MILLISECOND:6, QUARTER:7, WEEK:8, WEEKDAY:9};
123 
dojo.date.add = function (dt, interv, incr) {
124 
	if (typeof dt == "number") {
125 
		dt = new Date(dt);
126 
	}
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	function fixOvershoot() {
128 
		if (sum.getDate() < dt.getDate()) {
129 
			sum.setDate(0);
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		}
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	}
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	var sum = new Date(dt);
133 
	with (dojo.date.dateParts) {
134 
		switch (interv) {
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		  case YEAR:
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			sum.setFullYear(dt.getFullYear() + incr);
137 
			fixOvershoot();
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			break;
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		  case QUARTER:
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			incr *= 3;
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		  case MONTH:
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			sum.setMonth(dt.getMonth() + incr);
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			fixOvershoot();
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			break;
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		  case WEEK:
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			incr *= 7;
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		  case DAY:
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			sum.setDate(dt.getDate() + incr);
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			break;
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		  case WEEKDAY:
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			var dat = dt.getDate();
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			var weeks = 0;
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			var days = 0;
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			var strt = 0;
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			var trgt = 0;
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			var adj = 0;
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			var mod = incr % 5;
158 
			if (mod == 0) {
159 
				days = (incr > 0) ? 5 : -5;
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				weeks = (incr > 0) ? ((incr - 5) / 5) : ((incr + 5) / 5);
161 
			} else {
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				days = mod;
163 
				weeks = parseInt(incr / 5);
164 
			}
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			strt = dt.getDay();
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			if (strt == 6 && incr > 0) {
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				adj = 1;
168 
			} else {
169 
				if (strt == 0 && incr < 0) {
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					adj = -1;
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				}
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			}
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			trgt = (strt + days);
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			if (trgt == 0 || trgt == 6) {
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				adj = (incr > 0) ? 2 : -2;
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			}
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			sum.setDate(dat + (7 * weeks) + days + adj);
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			break;
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		  case HOUR:
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			sum.setHours(sum.getHours() + incr);
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			break;
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		  case MINUTE:
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			sum.setMinutes(sum.getMinutes() + incr);
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			break;
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		  case SECOND:
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			sum.setSeconds(sum.getSeconds() + incr);
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			break;
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		  case MILLISECOND:
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			sum.setMilliseconds(sum.getMilliseconds() + incr);
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			break;
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		  default:
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			break;
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		}
194 
	}
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	return sum;
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};
197 
dojo.date.diff = function (dtA, dtB, interv) {
198 
	if (typeof dtA == "number") {
199 
		dtA = new Date(dtA);
200 
	}
201 
	if (typeof dtB == "number") {
202 
		dtB = new Date(dtB);
203 
	}
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	var yeaDiff = dtB.getFullYear() - dtA.getFullYear();
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	var monDiff = (dtB.getMonth() - dtA.getMonth()) + (yeaDiff * 12);
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	var msDiff = dtB.getTime() - dtA.getTime();
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	var secDiff = msDiff / 1000;
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	var minDiff = secDiff / 60;
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	var houDiff = minDiff / 60;
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	var dayDiff = houDiff / 24;
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	var weeDiff = dayDiff / 7;
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	var delta = 0;
213 
	with (dojo.date.dateParts) {
214 
		switch (interv) {
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		  case YEAR:
216 
			delta = yeaDiff;
217 
			break;
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		  case QUARTER:
219 
			var mA = dtA.getMonth();
220 
			var mB = dtB.getMonth();
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			var qA = Math.floor(mA / 3) + 1;
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			var qB = Math.floor(mB / 3) + 1;
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			qB += (yeaDiff * 4);
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			delta = qB - qA;
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			break;
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		  case MONTH:
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			delta = monDiff;
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			break;
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		  case WEEK:
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			delta = parseInt(weeDiff);
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			break;
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		  case DAY:
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			delta = dayDiff;
234 
			break;
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		  case WEEKDAY:
236 
			var days = Math.round(dayDiff);
237 
			var weeks = parseInt(days / 7);
238 
			var mod = days % 7;
239 
			if (mod == 0) {
240 
				days = weeks * 5;
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			} else {
242 
				var adj = 0;
243 
				var aDay = dtA.getDay();
244 
				var bDay = dtB.getDay();
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				weeks = parseInt(days / 7);
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				mod = days % 7;
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				var dtMark = new Date(dtA);
248 
				dtMark.setDate(dtMark.getDate() + (weeks * 7));
249 
				var dayMark = dtMark.getDay();
250 
				if (dayDiff > 0) {
251 
					switch (true) {
252 
					  case aDay == 6:
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						adj = -1;
254 
						break;
255 
					  case aDay == 0:
256 
						adj = 0;
257 
						break;
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					  case bDay == 6:
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						adj = -1;
260 
						break;
261 
					  case bDay == 0:
262 
						adj = -2;
263 
						break;
264 
					  case (dayMark + mod) > 5:
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						adj = -2;
266 
						break;
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					  default:
268 
						break;
269 
					}
270 
				} else {
271 
					if (dayDiff < 0) {
272 
						switch (true) {
273 
						  case aDay == 6:
274 
							adj = 0;
275 
							break;
276 
						  case aDay == 0:
277 
							adj = 1;
278 
							break;
279 
						  case bDay == 6:
280 
							adj = 2;
281 
							break;
282 
						  case bDay == 0:
283 
							adj = 1;
284 
							break;
285 
						  case (dayMark + mod) < 0:
286 
							adj = 2;
287 
							break;
288 
						  default:
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							break;
290 
						}
291 
					}
292 
				}
293 
				days += adj;
294 
				days -= (weeks * 2);
295 
			}
296 
			delta = days;
297 
			break;
298 
		  case HOUR:
299 
			delta = houDiff;
300 
			break;
301 
		  case MINUTE:
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			delta = minDiff;
303 
			break;
304 
		  case SECOND:
305 
			delta = secDiff;
306 
			break;
307 
		  case MILLISECOND:
308 
			delta = msDiff;
309 
			break;
310 
		  default:
311 
			break;
312 
		}
313 
	}
314 
	return Math.round(delta);
315 
};
316