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webgui/www/extras/extjs/source/util/Date.js

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/*
* Ext JS Library 1.0.1
* Copyright(c) 2006-2007, Ext JS, LLC.
* licensing@extjs.com
*
* http://www.extjs.com/license
*/
/**
* @class Date
*
* The date parsing and format syntax is a subset of
* <a href="http://www.php.net/date">PHP's date() function</a>, and the formats that are
* supported will provide results equivalent to their PHP versions.
*
* Following is the list of all currently supported formats:
*<pre>
Sample date:
'Wed Jan 10 2007 15:05:01 GMT-0600 (Central Standard Time)'
Format Output Description
------ ---------- --------------------------------------------------------------
d 10 Day of the month, 2 digits with leading zeros
D Wed A textual representation of a day, three letters
j 10 Day of the month without leading zeros
l Wednesday A full textual representation of the day of the week
S th English ordinal day of month suffix, 2 chars (use with j)
w 3 Numeric representation of the day of the week
z 9 The julian date, or day of the year (0-365)
W 01 ISO-8601 2-digit week number of year, weeks starting on Monday (00-52)
F January A full textual representation of the month
m 01 Numeric representation of a month, with leading zeros
M Jan Month name abbreviation, three letters
n 1 Numeric representation of a month, without leading zeros
t 31 Number of days in the given month
L 0 Whether it's a leap year (1 if it is a leap year, else 0)
Y 2007 A full numeric representation of a year, 4 digits
y 07 A two digit representation of a year
a pm Lowercase Ante meridiem and Post meridiem
A PM Uppercase Ante meridiem and Post meridiem
g 3 12-hour format of an hour without leading zeros
G 15 24-hour format of an hour without leading zeros
h 03 12-hour format of an hour with leading zeros
H 15 24-hour format of an hour with leading zeros
i 05 Minutes with leading zeros
s 01 Seconds, with leading zeros
O -0600 Difference to Greenwich time (GMT) in hours
T CST Timezone setting of the machine running the code
Z -21600 Timezone offset in seconds (negative if west of UTC, positive if east)
</pre>
*
* Example usage (note that you must escape format specifiers with '\\' to render them as character literals):
* <pre><code>
var dt = new Date('1/10/2007 03:05:01 PM GMT-0600');
document.write(dt.format('Y-m-d')); //2007-01-10
document.write(dt.format('F j, Y, g:i a')); //January 10, 2007, 3:05 pm
document.write(dt.format('l, \\t\\he dS of F Y h:i:s A')); //Wednesday, the 10th of January 2007 03:05:01 PM
</code></pre>
*
* Here are some standard date/time patterns that you might find helpful. They
* are not part of the source of Date.js, but to use them you can simply copy this
* block of code into any script that is included after Date.js and they will also become
* globally available on the Date object. Feel free to add or remove patterns as needed in your code.
* <pre><code>
Date.patterns = {
ISO8601Long:"Y-m-d H:i:s",
ISO8601Short:"Y-m-d",
ShortDate: "n/j/Y",
LongDate: "l, F d, Y",
FullDateTime: "l, F d, Y g:i:s A",
MonthDay: "F d",
ShortTime: "g:i A",
LongTime: "g:i:s A",
SortableDateTime: "Y-m-d\\TH:i:s",
UniversalSortableDateTime: "Y-m-d H:i:sO",
YearMonth: "F, Y"
};
</code></pre>
*
* Example usage:
* <pre><code>
var dt = new Date();
document.write(dt.format(Date.patterns.ShortDate));
</code></pre>
*/
/*
* Most of the date-formatting functions below are the excellent work of Baron Schwartz.
* They generate precompiled functions from date formats instead of parsing and
* processing the pattern every time you format a date. These functions are available
* on every Date object (any javascript function).
*
* The original article and download are here:
* http://www.xaprb.com/blog/2005/12/12/javascript-closures-for-runtime-efficiency/
*
*/
// private
Date.parseFunctions = {count:0};
// private
Date.parseRegexes = [];
// private
Date.formatFunctions = {count:0};
// private
Date.prototype.dateFormat = function(format) {
if (Date.formatFunctions[format] == null) {
Date.createNewFormat(format);
}
var func = Date.formatFunctions[format];
return this[func]();
};
/**
* Formats a date given the supplied format string
* @param {String} format The format string
* @return {String} The formatted date
* @method
*/
Date.prototype.format = Date.prototype.dateFormat;
// private
Date.createNewFormat = function(format) {
var funcName = "format" + Date.formatFunctions.count++;
Date.formatFunctions[format] = funcName;
var code = "Date.prototype." + funcName + " = function(){return ";
var special = false;
var ch = '';
for (var i = 0; i < format.length; ++i) {
ch = format.charAt(i);
if (!special && ch == "\\") {
special = true;
}
else if (special) {
special = false;
code += "'" + String.escape(ch) + "' + ";
}
else {
code += Date.getFormatCode(ch);
}
}
eval(code.substring(0, code.length - 3) + ";}");
};
// private
Date.getFormatCode = function(character) {
switch (character) {
case "d":
return "String.leftPad(this.getDate(), 2, '0') + ";
case "D":
return "Date.dayNames[this.getDay()].substring(0, 3) + ";
case "j":
return "this.getDate() + ";
case "l":
return "Date.dayNames[this.getDay()] + ";
case "S":
return "this.getSuffix() + ";
case "w":
return "this.getDay() + ";
case "z":
return "this.getDayOfYear() + ";
case "W":
return "this.getWeekOfYear() + ";
case "F":
return "Date.monthNames[this.getMonth()] + ";
case "m":
return "String.leftPad(this.getMonth() + 1, 2, '0') + ";
case "M":
return "Date.monthNames[this.getMonth()].substring(0, 3) + ";
case "n":
return "(this.getMonth() + 1) + ";
case "t":
return "this.getDaysInMonth() + ";
case "L":
return "(this.isLeapYear() ? 1 : 0) + ";
case "Y":
return "this.getFullYear() + ";
case "y":
return "('' + this.getFullYear()).substring(2, 4) + ";
case "a":
return "(this.getHours() < 12 ? 'am' : 'pm') + ";
case "A":
return "(this.getHours() < 12 ? 'AM' : 'PM') + ";
case "g":
return "((this.getHours() %12) ? this.getHours() % 12 : 12) + ";
case "G":
return "this.getHours() + ";
case "h":
return "String.leftPad((this.getHours() %12) ? this.getHours() % 12 : 12, 2, '0') + ";
case "H":
return "String.leftPad(this.getHours(), 2, '0') + ";
case "i":
return "String.leftPad(this.getMinutes(), 2, '0') + ";
case "s":
return "String.leftPad(this.getSeconds(), 2, '0') + ";
case "O":
return "this.getGMTOffset() + ";
case "T":
return "this.getTimezone() + ";
case "Z":
return "(this.getTimezoneOffset() * -60) + ";
default:
return "'" + String.escape(character) + "' + ";
}
};
/**
* Parses the passed string using the specified format. Example Usage:
<pre><code>
var date = Date.parseDate('2006-12-25', 'Y-m-d');
</code></pre>
* @param {String} input The unparsed date as a string
* @param {String} format The format the date is in
* @return {Date} The parsed date
* @static
*/
Date.parseDate = function(input, format) {
if (Date.parseFunctions[format] == null) {
Date.createParser(format);
}
var func = Date.parseFunctions[format];
return Date[func](input);
};
// private
Date.createParser = function(format) {
var funcName = "parse" + Date.parseFunctions.count++;
var regexNum = Date.parseRegexes.length;
var currentGroup = 1;
Date.parseFunctions[format] = funcName;
var code = "Date." + funcName + " = function(input){\n"
+ "var y = -1, m = -1, d = -1, h = -1, i = -1, s = -1;\n"
+ "var d = new Date();\n"
+ "y = d.getFullYear();\n"
+ "m = d.getMonth();\n"
+ "d = d.getDate();\n"
+ "var results = input.match(Date.parseRegexes[" + regexNum + "]);\n"
+ "if (results && results.length > 0) {";
var regex = "";
var special = false;
var ch = '';
for (var i = 0; i < format.length; ++i) {
ch = format.charAt(i);
if (!special && ch == "\\") {
special = true;
}
else if (special) {
special = false;
regex += String.escape(ch);
}
else {
var obj = Date.formatCodeToRegex(ch, currentGroup);
currentGroup += obj.g;
regex += obj.s;
if (obj.g && obj.c) {
code += obj.c;
}
}
}
code += "if (y > 0 && m >= 0 && d > 0 && h >= 0 && i >= 0 && s >= 0)\n"
+ "{return new Date(y, m, d, h, i, s);}\n"
+ "else if (y > 0 && m >= 0 && d > 0 && h >= 0 && i >= 0)\n"
+ "{return new Date(y, m, d, h, i);}\n"
+ "else if (y > 0 && m >= 0 && d > 0 && h >= 0)\n"
+ "{return new Date(y, m, d, h);}\n"
+ "else if (y > 0 && m >= 0 && d > 0)\n"
+ "{return new Date(y, m, d);}\n"
+ "else if (y > 0 && m >= 0)\n"
+ "{return new Date(y, m);}\n"
+ "else if (y > 0)\n"
+ "{return new Date(y);}\n"
+ "}return null;}";
Date.parseRegexes[regexNum] = new RegExp("^" + regex + "$");
eval(code);
};
// private
Date.formatCodeToRegex = function(character, currentGroup) {
switch (character) {
case "D":
return {g:0,
c:null,
s:"(?:Sun|Mon|Tue|Wed|Thu|Fri|Sat)"};
case "j":
case "d":
return {g:1,
c:"d = parseInt(results[" + currentGroup + "], 10);\n",
s:"(\\d{1,2})"};
case "l":
return {g:0,
c:null,
s:"(?:" + Date.dayNames.join("|") + ")"};
case "S":
return {g:0,
c:null,
s:"(?:st|nd|rd|th)"};
case "w":
return {g:0,
c:null,
s:"\\d"};
case "z":
return {g:0,
c:null,
s:"(?:\\d{1,3})"};
case "W":
return {g:0,
c:null,
s:"(?:\\d{2})"};
case "F":
return {g:1,
c:"m = parseInt(Date.monthNumbers[results[" + currentGroup + "].substring(0, 3)], 10);\n",
s:"(" + Date.monthNames.join("|") + ")"};
case "M":
return {g:1,
c:"m = parseInt(Date.monthNumbers[results[" + currentGroup + "]], 10);\n",
s:"(Jan|Feb|Mar|Apr|May|Jun|Jul|Aug|Sep|Oct|Nov|Dec)"};
case "n":
case "m":
return {g:1,
c:"m = parseInt(results[" + currentGroup + "], 10) - 1;\n",
s:"(\\d{1,2})"};
case "t":
return {g:0,
c:null,
s:"\\d{1,2}"};
case "L":
return {g:0,
c:null,
s:"(?:1|0)"};
case "Y":
return {g:1,
c:"y = parseInt(results[" + currentGroup + "], 10);\n",
s:"(\\d{4})"};
case "y":
return {g:1,
c:"var ty = parseInt(results[" + currentGroup + "], 10);\n"
+ "y = ty > Date.y2kYear ? 1900 + ty : 2000 + ty;\n",
s:"(\\d{1,2})"};
case "a":
return {g:1,
c:"if (results[" + currentGroup + "] == 'am') {\n"
+ "if (h == 12) { h = 0; }\n"
+ "} else { if (h < 12) { h += 12; }}",
s:"(am|pm)"};
case "A":
return {g:1,
c:"if (results[" + currentGroup + "] == 'AM') {\n"
+ "if (h == 12) { h = 0; }\n"
+ "} else { if (h < 12) { h += 12; }}",
s:"(AM|PM)"};
case "g":
case "G":
case "h":
case "H":
return {g:1,
c:"h = parseInt(results[" + currentGroup + "], 10);\n",
s:"(\\d{1,2})"};
case "i":
return {g:1,
c:"i = parseInt(results[" + currentGroup + "], 10);\n",
s:"(\\d{2})"};
case "s":
return {g:1,
c:"s = parseInt(results[" + currentGroup + "], 10);\n",
s:"(\\d{2})"};
case "O":
return {g:0,
c:null,
s:"[+-]\\d{4}"};
case "T":
return {g:0,
c:null,
s:"[A-Z]{3}"};
case "Z":
return {g:0,
c:null,
s:"[+-]\\d{1,5}"};
default:
return {g:0,
c:null,
s:String.escape(character)};
}
};
/**
* Get the timezone abbreviation of the current date (equivalent to the format specifier 'T').
* @return {String} The abbreviated timezone name (e.g. 'CST')
*/
Date.prototype.getTimezone = function() {
return this.toString().replace(
/^.*? ([A-Z]{3}) [0-9]{4}.*$/, "$1").replace(
/^.*?\(([A-Z])[a-z]+ ([A-Z])[a-z]+ ([A-Z])[a-z]+\)$/, "$1$2$3");
};
/**
* Get the offset from GMT of the current date (equivalent to the format specifier 'O').
* @return {String} The 4-character offset string prefixed with + or - (e.g. '-0600')
*/
Date.prototype.getGMTOffset = function() {
return (this.getTimezoneOffset() > 0 ? "-" : "+")
+ String.leftPad(Math.floor(this.getTimezoneOffset() / 60), 2, "0")
+ String.leftPad(this.getTimezoneOffset() % 60, 2, "0");
};
/**
* Get the numeric day number of the year, adjusted for leap year.
* @return {Number} 0 through 365 (366 in leap years)
*/
Date.prototype.getDayOfYear = function() {
var num = 0;
Date.daysInMonth[1] = this.isLeapYear() ? 29 : 28;
for (var i = 0; i < this.getMonth(); ++i) {
num += Date.daysInMonth[i];
}
return num + this.getDate() - 1;
};
/**
* Get the string representation of the numeric week number of the year
* (equivalent to the format specifier 'W').
* @return {String} '00' through '52'
*/
Date.prototype.getWeekOfYear = function() {
// Skip to Thursday of this week
var now = this.getDayOfYear() + (4 - this.getDay());
// Find the first Thursday of the year
var jan1 = new Date(this.getFullYear(), 0, 1);
var then = (7 - jan1.getDay() + 4);
return String.leftPad(((now - then) / 7) + 1, 2, "0");
};
/**
* Whether or not the current date is in a leap year.
* @return {Boolean} True if the current date is in a leap year, else false
*/
Date.prototype.isLeapYear = function() {
var year = this.getFullYear();
return ((year & 3) == 0 && (year % 100 || (year % 400 == 0 && year)));
};
/**
* Get the first day of the current month, adjusted for leap year. The returned value
* is the numeric day index within the week (0-6) which can be used in conjunction with
* the {@link #monthNames} array to retrieve the textual day name.
* Example:
*<pre><code>
var dt = new Date('1/10/2007');
document.write(Date.dayNames[dt.getFirstDayOfMonth()]); //output: 'Monday'
</code></pre>
* @return {Number} The day number (0-6)
*/
Date.prototype.getFirstDayOfMonth = function() {
var day = (this.getDay() - (this.getDate() - 1)) % 7;
return (day < 0) ? (day + 7) : day;
};
/**
* Get the last day of the current month, adjusted for leap year. The returned value
* is the numeric day index within the week (0-6) which can be used in conjunction with
* the {@link #monthNames} array to retrieve the textual day name.
* Example:
*<pre><code>
var dt = new Date('1/10/2007');
document.write(Date.dayNames[dt.getLastDayOfMonth()]); //output: 'Wednesday'
</code></pre>
* @return {Number} The day number (0-6)
*/
Date.prototype.getLastDayOfMonth = function() {
var day = (this.getDay() + (Date.daysInMonth[this.getMonth()] - this.getDate())) % 7;
return (day < 0) ? (day + 7) : day;
};
/**
* Get a Date of the first day of this date's month
* @return {Date}
*/
Date.prototype.getFirstDateOfMonth = function() {
return new Date(this.getFullYear(), this.getMonth(), 1);
};
/**
* Get a Date of the late day of this date's month
* @return {Date}
*/
Date.prototype.getLastDateOfMonth = function() {
return new Date(this.getFullYear(), this.getMonth(), this.getDaysInMonth());
};
/**
* Get the number of days in the current month, adjusted for leap year.
* @return {Number} The number of days in the month
*/
Date.prototype.getDaysInMonth = function() {
Date.daysInMonth[1] = this.isLeapYear() ? 29 : 28;
return Date.daysInMonth[this.getMonth()];
};
/**
* Get the English ordinal suffix of the current day (equivalent to the format specifier 'S').
* @return {String} 'st, 'nd', 'rd' or 'th'
*/
Date.prototype.getSuffix = function() {
switch (this.getDate()) {
case 1:
case 21:
case 31:
return "st";
case 2:
case 22:
return "nd";
case 3:
case 23:
return "rd";
default:
return "th";
}
};
// private
Date.daysInMonth = [31,28,31,30,31,30,31,31,30,31,30,31];
/**
* An array of textual month names.
* Override these values for international dates, for example...
* Date.monthNames = ['JanInYourLang', 'FebInYourLang', ...];
* @type Array
* @static
*/
Date.monthNames =
["January",
"February",
"March",
"April",
"May",
"June",
"July",
"August",
"September",
"October",
"November",
"December"];
/**
* An array of textual day names.
* Override these values for international dates, for example...
* Date.dayNames = ['SundayInYourLang', 'MondayInYourLang', ...];
* @type Array
* @static
*/
Date.dayNames =
["Sunday",
"Monday",
"Tuesday",
"Wednesday",
"Thursday",
"Friday",
"Saturday"];
// private
Date.y2kYear = 50;
// private
Date.monthNumbers = {
Jan:0,
Feb:1,
Mar:2,
Apr:3,
May:4,
Jun:5,
Jul:6,
Aug:7,
Sep:8,
Oct:9,
Nov:10,
Dec:11};
/**
* Creates and returns a new Date instance with the exact same date value as the called instance.
* Dates are copied and passed by reference, so if a copied date variable is modified later, the original
* variable will also be changed. When the intention is to create a new variable that will not
* modify the original instance, you should create a clone.
*
* Example of correctly cloning a date:
* <pre><code>
//wrong way:
var orig = new Date('10/1/2006');
var copy = orig;
copy.setDate(5);
document.write(orig); //returns 'Thu Oct 05 2006'!
//correct way:
var orig = new Date('10/1/2006');
var copy = orig.clone();
copy.setDate(5);
document.write(orig); //returns 'Thu Oct 01 2006'
</code></pre>
* @return {Date} The new Date instance
*/
Date.prototype.clone = function() {
return new Date(this.getTime());
};
/**
* Clears any time information from this date
@param {Boolean} clone true to create a clone of this date, clear the time and return it
@return {Date} this or the clone
*/
Date.prototype.clearTime = function(clone){
if(clone){
return this.clone().clearTime();
}
this.setHours(0);
this.setMinutes(0);
this.setSeconds(0);
this.setMilliseconds(0);
return this;
};
// private
// safari setMonth is broken
if(Ext.isSafari){
Date.brokenSetMonth = Date.prototype.setMonth;
Date.prototype.setMonth = function(num){
if(num <= -1){
var n = Math.ceil(-num);
var back_year = Math.ceil(n/12);
var month = (n % 12) ? 12 - n % 12 : 0 ;
this.setFullYear(this.getFullYear() - back_year);
return Date.brokenSetMonth.call(this, month);
} else {
return Date.brokenSetMonth.apply(this, arguments);
}
};
}
/** Date interval constant @static @type String */
Date.MILLI = "ms";
/** Date interval constant @static @type String */
Date.SECOND = "s";
/** Date interval constant @static @type String */
Date.MINUTE = "mi";
/** Date interval constant @static @type String */
Date.HOUR = "h";
/** Date interval constant @static @type String */
Date.DAY = "d";
/** Date interval constant @static @type String */
Date.MONTH = "mo";
/** Date interval constant @static @type String */
Date.YEAR = "y";
/**
* Provides a convenient method of performing basic date arithmetic. This method
* does not modify the Date instance being called - it creates and returns
* a new Date instance containing the resulting date value.
*
* Examples:
* <pre><code>
//Basic usage:
var dt = new Date('10/29/2006').add(Date.DAY, 5);
document.write(dt); //returns 'Fri Oct 06 2006 00:00:00'
//Negative values will subtract correctly:
var dt2 = new Date('10/1/2006').add(Date.DAY, -5);
document.write(dt2); //returns 'Tue Sep 26 2006 00:00:00'
//You can even chain several calls together in one line!
var dt3 = new Date('10/1/2006').add(Date.DAY, 5).add(Date.HOUR, 8).add(Date.MINUTE, -30);
document.write(dt3); //returns 'Fri Oct 06 2006 07:30:00'
</code></pre>
*
* @param {String} interval A valid date interval enum value
* @param {Number} value The amount to add to the current date
* @return {Date} The new Date instance
*/
Date.prototype.add = function(interval, value){
var d = this.clone();
if (!interval || value === 0) return d;
switch(interval.toLowerCase()){
case Date.MILLI:
d.setMilliseconds(this.getMilliseconds() + value);
break;
case Date.SECOND:
d.setSeconds(this.getSeconds() + value);
break;
case Date.MINUTE:
d.setMinutes(this.getMinutes() + value);
break;
case Date.HOUR:
d.setHours(this.getHours() + value);
break;
case Date.DAY:
d.setDate(this.getDate() + value);
break;
case Date.MONTH:
var day = this.getDate();
if(day > 28){
day = Math.min(day, this.getFirstDateOfMonth().add('mo', value).getLastDateOfMonth().getDate());
}
d.setDate(day);
d.setMonth(this.getMonth() + value);
break;
case Date.YEAR:
d.setFullYear(this.getFullYear() + value);
break;
}
return d;
};
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