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Date.js
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Date.js
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/**
* Date instance methods
*
* @author Ken Snyder (kendsnyder at gmail dot com)
* @date December 2011
* @version 3.3 (http://sandbox.kendsnyder.com/date)
* @license Creative Commons Attribution License 3.0 (http://creativecommons.org/licenses/by/3.0)
*/
;(function(global) {
//
// pre-calculate the number of milliseconds in a day
//
var day = 24 * 60 * 60 * 1000;
/**
* Add leading zeros
*/
function zeroPad(number, digits) {
number = number+'';
var cnt = digits - number.length;
if (cnt <= 0) {
return number;
}
return Array(cnt + 1).join('0') + number;
}
/**
* Extend an object with the properties of another
*/
function extend(d, s) {
for (var p in s) {
if (Object.prototype.hasOwnProperty.call(s, p)) {
d[p] = s[p];
}
}
}
//
// set up integers and functions for adding to a date or subtracting two dates
//
var multipliers = {
millisecond: 1,
second: 1000,
minute: 60 * 1000,
hour: 60 * 60 * 1000,
day: day,
week: 7 * day,
month: {
// add a number of months
add: function(d, number) {
var prevDay = d.getDate();
// add any years needed (increments of 12)
multipliers.year.add(d, Math[number > 0 ? 'floor' : 'ceil'](number / 12));
// ensure that we properly wrap betwen December and January
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);
if (d.getDate() != prevDay) {
// new month has fewer days in the month than previous/next month
// so JavaScript will wrap over to next month
d.add(-1, 'month');
d.setDate(d.daysInMonth());
}
},
// get the number of months between two Date objects (decimal to the nearest day)
diff: function(d1, d2) {
// get the number of years
var diffYears = d1.getFullYear() - d2.getFullYear();
// get the number of remaining months
var diffMonths = d1.getMonth() - d2.getMonth() + (diffYears * 12);
// get the number of remaining days
var diffDays = d1.getDate() - d2.getDate();
// return the month difference with the days difference as a decimal
return diffMonths + (diffDays / 30);
}
},
year: {
// add a number of years
add: function(d, number) {
d.setYear(d.getFullYear() + Math[number > 0 ? 'floor' : 'ceil'](number));
},
// get the number of years between two Date objects (decimal to the nearest day)
diff: function(d1, d2) {
return multipliers.month.diff(d1, d2) / 12;
}
}
};
//
// alias each multiplier with an 's' to allow 'year' and 'years' for example
//
var m = multipliers;
m.milliseconds = m.millisecond;
m.seconds = m.second;
m.minutes = m.minute;
m.hours = m.hour;
m.weeks = m.week;
m.days = m.day;
m.months = m.month;
m.years = m.year;
//
// Add methods to Date instances
//
var instanceMethods = {
/**
* Return a date one day ahead (or any other unit)
*
* @param {String} [unit="day"] The unit name (e.g. years, seconds)
* @return {Date} A new Date object
*/
succ: function(unit) {
return this.clone().add(1, unit);
},
/**
* Add an arbitrary time frame
*
* @param {Number} number The amount to add
* @param {String} unit The unit name (e.g. years, seconds)
* @return {this}
*/
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;
},
/**
* Find the difference between this date and another date. Positive means more recent
*
* @param {String|Date|Number} dateObj
* @param {String} unit The unit name (e.g. years, seconds)
* @param {Boolean} [allowDecimal=false] If true, return a decimal, otherwise round toward zero
* @return {Number|NaN} If the other date is not recognized, return NaN
*/
diff: function(dateObj, unit, allowDecimal) {
var unitDiff;
// ensure we have a Date object
dateObj = Date.create(dateObj);
if (dateObj === null) {
return NaN;
}
// get the multiplying factor integer or factor function
var factor = multipliers[unit] || multipliers.day;
if (typeof factor == 'number') {
// multiply
unitDiff = (this.getTime() - dateObj.getTime()) / factor;
} else {
// run function
unitDiff = factor.diff(this, dateObj);
}
// if decimals are not allowed, round toward zero
return (allowDecimal ? unitDiff : Math[unitDiff > 0 ? 'floor' : 'ceil'](unitDiff));
},
/**
* Our gsub function that applies the format string using the given formatting scheme
*
* @param {String} formatStr The format string such as "%Y-%m-%d"
* @param {Object} formatting The formatting scheme set in Date.addFormat()
* @return {String} Return the string representation of the date\
*/
_applyFormat: function(formatStr, formatting) {
// default the format string to year-month-day
var source = formatStr || formatting.defaultFormat, result = '', match;
// replace each format code
while (source.length > 0) {
if ((match = source.match(formatting.matcher))) {
result += source.slice(0, match.index);
result += (match[1] || '') + this._applyFormatChar(match[2], formatting);
source = source.slice(match.index + match[0].length);
} else {
result += source, source = '';
}
}
return result;
},
/**
* Apply the format of a single character code using the given formatting scheme
*
* @param {String} code The code such as "Y"
* @param {Object} formatting The formatting scheme set in Date.addFormat()
* @return {String} Return the string representation of the date or the code literal if not recognized
*/
_applyFormatChar: function(code, formatting) {
if (formatting.shortcuts && formatting.shortcuts[code]) {
// process any shortcuts recursively
return this._applyFormat(formatting.shortcuts[code], formatting);
}
else if(formatting.codes && formatting.codes[code]) {
// get the format code function and toPaddedString() argument
var getter = formatting.codes[code].split('.');
var nbr = this['get' + getter[0]] ? this['get' + getter[0]]() : '';
// zeroPad if specified
if (getter[1]) {
nbr = zeroPad(nbr, getter[1]);
}
// prepend the leading character
return nbr;
}
return code;
},
/**
* Format the string using strftime or formatPhp depending on if % is present
*
* @param {String} [formatStr] The format. defaults to Date.formatting.strftime.defaultFormat
* @return {String}
*/
format: function(formatStr) {
formatStr = formatStr || Date.formatting.strftime.defaultFormat;
if (formatStr.indexOf('%') > -1) {
return this.strftime(formatStr);
}
return this.formatPhp(formatStr);
},
/**
* Return a two-digit year
*
* @return {Number}
*/
getShortYear: function() {
return this.getYear() % 100;
},
/**
* Get the number of the month, 1-12
*
* @return {Number}
*/
getMonthNumber: function() {
return this.getMonth() + 1;
},
/**
* Get the name of the month
*
* @return {String}
*/
getMonthName: function() {
return Date.MONTHNAMES[this.getMonth()];
},
/**
* Get the abbreviated name of the month
*
* @return {String}
*/
getAbbrMonthName: function() {
return Date.ABBR_MONTHNAMES[this.getMonth()];
},
/**
* Get the name of the week day (Sunday through Saturday)
*
* @return {String}
*/
getDayName: function() {
return Date.DAYNAMES[this.getDay()];
},
/**
* Get the abbreviated name of the week day (Sunday through Saturday)
*
* @return {String}
*/
getAbbrDayName: function() {
return Date.ABBR_DAYNAMES[this.getDay()];
},
/**
* Get the ordinal string associated with the day of the month (i.e. st, nd, rd, th)
*
* @return {String}
*/
getDayOrdinal: function() {
return Date.ORDINALNAMES[this.getDate() % 10];
},
/**
* Get the hour on a 12-hour scheme
*
* @return {Number}
*/
getHours12: function() {
var hours = this.getHours();
return hours > 12 ? hours - 12 : (hours == 0 ? 12 : hours);
},
/**
* Get the am or pm (uppercase)
*
* @return {String}
*/
getAmPm: function() {
return this.getHours() >= 12 ? 'PM' : 'AM';
},
/**
* Get the am or pm (lowercase)
*
* @return {String}
*/
getAmPmLower: function() {
return this.getHours() >= 12 ? 'pm' : 'am';
},
/**
* Get the date as a Unix timestamp
*
* @return {Number}
*/
getUnix: function() {
return Math.round(this.getTime() / 1000, 0);
},
/**
* Get the GMT offset in hours and minutes (e.g. +06:30)
*
* @return {String}
*/
getUTCOffset: function() {
// divide the minutes offset by 60
var hours = this.getTimezoneOffset() / 60;
// decide if we are ahead of or behind GMT
var prefix = hours < 0 ? '+' : '-';
// remove the negative sign if any
hours = Math.abs(hours);
// add the +/- to the padded number of hours to : to the padded minutes
return prefix + zeroPad(Math.floor(hours), 2) + ':' + zeroPad((hours % 1) * 60, 2);
},
/**
* Set the offset in minutes by converting date to UTC then adding or subtracting given number of seconds
*
* @param {Number} seconds The number of seconds before or past UTC time
* @return {Date}
*/
setUTCOffset: function(seconds) {
var curr = this.getTimezoneOffset() * -1;
var utcNow = this.getTime() + (curr * 60000);
this.setTime(utcNow - (seconds * 60000));
return this;
},
/**
* Set the time zone offset in minutes and seconds in the form "+0200" or "+02:00"
*
* @param {String} str The GMT Offset
* @return {Date}
*/
setUTCOffsetString: function(str) {
var hoursMin = str.match(/([+-]?)([01]\d|2[0-3])\:?([0-5]\d)/);
if (hoursMin) {
var seconds = parseFloat(hoursMin[2]) * 60;
seconds += parseFloat(hoursMin[3]);
if (hoursMin[1] == '-') {
seconds *= -1;
}
this.setUTCOffset(seconds);
}
return this;
},
/**
* Get the GMT offset in hours and minutes without the colon (e.g. +0630)
*
* @return {String}
*/
getUTCOffsetNumber: function() {
return this.getUTCOffset().replace(':','');
},
/**
* Get the browser-reported name for the timezone (e.g. MDT, Mountain Daylight Time)
* Varies across browsers and languages
*
* @return {String}
*/
getTimezoneName: function() {
var match = /(?:\((.+)\)$| ([A-Z]{3}) )/.exec(this.toString());
return match[1] || match[2] || 'GMT' + this.getUTCOffset();
},
/**
* Convert this date to an 8-digit integer (%Y%m%d)
* Good for quickly comparing dates
*
* @return {Number}
*/
toYmdInt: function() {
return (this.getFullYear() * 10000) + (this.getMonthNumber() * 100) + this.getDate();
},
/**
* Create a copy of this date object
*
* @return {Date}
*/
clone: function() {
return new Date(this.getTime());
},
/**
* Get a textual representation of the difference between this date and now (or the given date)
* e.g. "3 minutes ago"
*
* @param {String|Date|Number} compare A string date, object or ms past epoch to compare to. Defaults to current date
* @return {String}
*/
diffText: function(compare) {
var seconds = this.diff(compare || Date.current(), 'seconds');
var diff = Math.abs(seconds);
var rawText;
if (diff < 120) {
// less than two minutes ago
return seconds >= 0 ? 'in a moment' : 'moments ago';
} else if (diff < 3600) {
// 2 to 59 minutes ago
rawText = floor(diff / 60) + " minutes";
} else if (diff < 86400) {
// less than 24 hours ago
var hours = floor(diff / 3600);
var s = hour == 1 ? '' : 's';
rawText = hours + " hour" + s + " ago";
} else if (diff < 172800) {
// yesterday
return seconds > 0 ? 'tomorrow' : 'yesterday';
} else if (diff < 604800) {
// 2 to 6 days ago
rawText = floor(diff / 86400) + " days";
} else if (diff < 1209600) {
// within 14 days
return seconds > 0 ? 'next week' : 'last week';
} else if (diff < 2419200) {
// within 28 days
rawText = floor(diff / 604800) + " weeks";
} else if (diff < 5184000) {
// within 60 days
return seconds > 0 ? 'next month' : 'last month';
} else if (diff < 31536000) {
// within 365 days
rawText = floor(diff / 2592000) + " months";
} else if (diff < 63072000) {
// within 730 days
return seconds > 0 ? 'next year' : 'last year';
} else {
// years ago
rawText = floor(diff / 31536000) + " years";
}
return (seconds > 0 ? 'in ' + rawText : rawText + ' ago');
},
/**
* Get the number of days in the month
*
* @return {Number}
*/
daysInMonth: function() {
return Date.daysInMonth(this.getFullYear(), this.getMonth()+1);
},
/**
* Return true if the year is a leap year
*
* @return {Boolean}
*/
isLeapYear: function() {
return Date.daysInMonth(this.getFullYear(), 1) == 29 ? 1 : 0;
}
};
extend(Date.prototype, instanceMethods);
/**
* ES5 Shim for converting to full ISO String
*
* @return {String}
*/
if (!Date.prototype.toISOString) {
Date.prototype.toISOString = function() {
return this.setUTCOffset(0).strftime(Date.ISO);
};
}
//
// Add static methods to Date
//
var staticMethods = {
/**
* The heart of the date functionality: returns a date object if given a convertable value, returns NaN if not convertable
* A robust and configurable version of Date.parse with the abilities of the Date constructor as well
*
* @param {String|Date|Number} [date]
* If date is not passed or is undefined, return the current date
* If date is an instance of Date, return it
* With one Number argument, interpret as milliseconds past epoch
* With one String argument, look through Date.create.patterns to try to convert it to a date
* Interpret 2 arguments as Year, Month (January = 0) at 1st day of month
* Interpret 3 arguments as Year, Month, Day
* Interpret 4 arguments as Year, Month, Day, Hour
* Interpret 5 arguments as Year, Month, Day, Hour, Minutes
* Interpret 6 arguments as Year, Month, Day, Hour, Minutes, Seconds
* Interpret 7 or more arguments as Year, Month, Day, Hour, Minutes, Seconds, Milliseconds
* @return {Date|NaN} If the date is not recognized, return NaN
*/
create: function(date) {
// 0 arguments or date is undefined
if (typeof date == 'undefined') {
return Date.current();
}
// If the passed value is already a date object, return it
if (date instanceof Date) {
return date;
}
var a = arguments;
switch (a.length) {
case 1:
// If the passed value is an integer, interpret it as ms past epoch
if (Object.prototype.toString.call(date) == '[object Number]') {
return new Date(date);
}
// trim the date before starting
date = String(date).replace(/^\s*(.*)\s*$/, '$1');
if (date === '') {
return Date.current();
}
var i = 0, pattern, ms, obj, match, regex, fn;
// try each of our patterns
while ((pattern = Date.create.patterns[i++])) {
if (typeof pattern[0] == 'string') {
// pattern[0] is the name of the pattern
regex = pattern[1];
fn = pattern[2];
}
else {
// backwards compatibility with version 3.1
regex = pattern[0];
fn = pattern[1];
}
if (!(match = date.match(regex))) {
continue;
}
if (typeof fn == 'function') {
obj = fn(match, date);
if (obj instanceof Date) {
return obj;
}
} else {
// fn is not a function but a string replace command
ms = Date.parse(date.replace(regex, fn));
if (!isNaN(ms)) {
return new Date(ms);
}
}
}
return NaN;
case 2: return new Date(a[0], a[1], 1);
case 3: return new Date(a[0], a[1], a[2]);
case 4: return new Date(a[0], a[1], a[2], a[3]);
case 5: return new Date(a[0], a[1], a[2], a[3], a[4]);
case 6: return new Date(a[0], a[1], a[2], a[3], a[4], a[5]);
default:return new Date(a[0], a[1], a[2], a[3], a[4], a[5], a[6]);
}
},
//
// constants representing month names, day names, and ordinal names to allow i18n
// (same names as Ruby Date constants)
//
/**
* @var {Array} Names for the months of the year
*/
MONTHNAMES : 'January February March April May June July August September October November December'.split(' '),
/**
* @var {Array} Abbreviated names for the months of the year
*/
ABBR_MONTHNAMES : 'Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec'.split(' '),
/**
* @var {Array} Names for the days of the week from Sunday to Saturday
*/
DAYNAMES : 'Sunday Monday Tuesday Wednesday Thursday Friday Saturday'.split(' '),
/**
* @var {Array} Abbreviated names for the days of the week from Sunday to Saturday
*/
ABBR_DAYNAMES : 'Sun Mon Tue Wed Thu Fri Sat'.split(' '),
/**
* @var {Array} The ordinal text (e.g. st, nd, rd, th) for digits 1 to 9
*/
ORDINALNAMES : 'th st nd rd th th th th th th'.split(' '),
/**
* @var {String} Pattern for full ISO-8601 date conversion
*/
ISO: '%Y-%m-%dT%H:%M:%S.%N%G',
/**
* @var {String} Pattern for SQL-type formatting
*/
SQL: '%Y-%m-%d %H:%M:%S',
/**
* @var {Date} The date of the script load
*/
SCRIPT_LOAD: new Date,
/**
* Return the number of days in the given year and month. January = 1
*
* @param {Number} year
* @param {Number} month
*/
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];
},
/**
* Set a form input to be automatically formatted to the given format. If not recognized, leave value alone
*
* @param {HTMLElement|String} input An HTML element or ID to which to attach the onblur event
* @param {String} [formatStr="Y-%m-%d %H:%M:%s"] The pattern with which to format the date
* @return {HTMLElement}
*/
autoFormat: function(input, formatStr) {
input = (typeof input == 'string' ? document.getElementById(input) : input);
function correct() {
var date = Date.create(input.value);
if (date) {
input.value = date.format(formatStr);
}
}
if (typeof input.attachEvent == 'function') {
input.attachEvent('onblur', correct);
}
else if (typeof input.addEventListener == 'function') {
input.addEventListener('blur', correct, false);
}
else {
input.onblur = correct;
}
return input;
},
/**
* Add a new set of format rules
*
* @param {String} name The name of the method
* @param {Object} rules A definition with keys matcher, defaultFormat, codes and shortcuts. See source code for examples.
* @return {this}
*/
addFormat: function(name, rules) {
Date.prototype[name] = function(formatStr) {
return this._applyFormat(formatStr, rules);
};
return this;
},
/**
* Add a new pattern for recognizing dates
* Examples:
* Date.addPattern(['month-year', /^(\d{1,2})-(\d{4})$/, '$1/01/$2']);
* Date.addPattern(['hoy', /^hoy$/i, function(match) { return new Date(); }], 'iso_8601');
*
* @param {Array} spec An array containing 3 items: [name, regex, function or replace pattern]
* @param {String} [afterName] The named pattern after which to add this pattern. When not given, place pattern at beginning
* @return {Object}
*/
addPattern: function(spec, afterName) {
if (afterName) {
var i = 0, pattern;
while ((pattern = Date.create.patterns[i++])) {
if (pattern[0] == afterName || pattern[1] == afterName) {
Date.create.patterns.splice(i, 0, spec);
return this;
}
}
}
// afterName not given or not found
Date.create.patterns.unshift(spec);
return this;
},
/**
* Remove a pattern by name
* Examples:
* Date.removePattern('us'); // us-style m/d/Y dates no longer recognized
* var us = Date.removePattern('us'); Date.addPattern(us, 'world'); // prefer world-style d/m/Y dates over us-style dates
*
* @param {String} name The name of the pattern to remove
* @return {Array|Boolean} Returns the removed pattern or false if pattern not found
*/
removePattern: function(name) {
var i = 0, pattern;
while ((pattern = Date.create.patterns[i++])) {
if (pattern[0] == name || pattern[1] == name) {
// return
return Date.create.patterns.splice(i-1, 1)[0];
}
}
return false;
},
/**
* Instantiate current date (allows unit testing and mocks)
*
* @return {Date}
*/
current: function() {
return new Date;
}
};
extend(Date, staticMethods);
// ES5 Shim
if (!('now' in Date)) {
/**
* Return the current date in milliseconds past epoch
*
* @return {Date}
*/
Date.now = function() {
return Date.current().setUTCOffset(0).getTime();
};
}
//
// format codes for strftime
//
// each code must be an array where the first member is the name of a Date.prototype function
// and optionally a second member indicating the number to pass to Number#toPaddedString()
//
Date.addFormat('strftime', {
//
// 2-part regex matcher for format codes
//
// first match must be the character before the code (to account for escaping)
// second match must be the format code character(s)
//
matcher: /()%(#?(%|[a-z]))/i,
defaultFormat: '%Y-%m-%d %H:%M:%s',
codes: {
// year
Y: 'FullYear',
y: 'ShortYear.2',
// month
m: 'MonthNumber.2',
'#m': 'MonthNumber',
B: 'MonthName',
b: 'AbbrMonthName',
// day
d: 'Date.2',
'#d': 'Date',
e: 'Date',
A: 'DayName',
a: 'AbbrDayName',
w: 'Day',
o: 'DayOrdinal',
// hours
H: 'Hours.2',
'#H': 'Hours',
I: 'Hours12.2',
'#I': 'Hours12',
P: 'AmPmLower',
p: 'AmPm',
// minutes
M: 'Minutes.2',
'#M': 'Minutes',
// seconds
S: 'Seconds.2',
'#S': 'Seconds',
s: 'Unix',
// milliseconds
N: 'Milliseconds.3',
'#N': 'Milliseconds',
// timezone
O: 'TimezoneOffset',
Z: 'TimezoneName',
G: 'UTCOffset'
},
//
// shortcuts that will be translated into their longer version
//
// be sure that format shortcuts do not refer to themselves: this will cause an infinite loop
//
shortcuts: {
// date
F: '%Y-%m-%d',
// time
T: '%H:%M:%S',
X: '%H:%M:%S',
// local format date
x: '%m/%d/%y',
D: '%m/%d/%y',
// local format extended
'#c': '%a %b %e %H:%M:%S %Y',
// local format short
v: '%e-%b-%Y',
R: '%H:%M',
r: '%I:%M:%S %p',
// tab and newline
t: '\t',
n: '\n',
'%': '%'
}
});
Date.addFormat('formatPhp', {
//
// 2-part regex matcher for format codes
//
// first match must be the character before the code (to account for escaping)
// second match must be the format code character(s)
//
matcher: /(\\)?([a-z])/i,
defaultFormat: 'Y-m-d H:i:s',
codes: {
// year
Y: 'FullYear',
y: 'ShortYear.2',
L: 'isLeapYear',
// month
m: 'MonthNumber.2',
n: 'MonthNumber',
F: 'MonthName',
M: 'AbbrMonthName',
t: 'daysInMonth',
// day
d: 'Date.2',
j: 'Date',
l: 'DayName',
D: 'AbbrDayName',
w: 'Day',
S: 'DayOrdinal',
// hours
H: 'Hours.2',
G: 'Hours',
h: 'Hours12.2',
g: 'Hours12',
a: 'AmPmLower',
A: 'AmPm',
// minutes
i: 'Minutes.2',
// seconds
s: 'Seconds.2',
U: 'Unix',
// timezone
Z: 'TimezoneOffset',
e: 'TimezoneName',
P: 'UTCOffset',
O: 'UTCOffsetNumber'
},
//
// shortcuts that will be translated into their longer version
//
// be sure that format shortcuts do not refer to themselves: this will cause an infinite loop
//
shortcuts: {
// iso
c: 'Y-m-d\\TH:i:sP',
// rfc 2822
r: 'D, j M Y H:i:s O'
}
});
var formatSql = {
//
// 2-part regex matcher for format codes
//
// first match must be the character before the code (to account for escaping)
// second match must be the format code character(s)
//
matcher: /()(mi|am|pm|ss|yyyy|yy|m{1,4}|d{1,4}|w|hh?24|hh?12)/i,
defaultFormat: 'yyyy-mm-dd hh24:mi:ss',
codes: {
// year
yyyy: 'FullYear',
yy: 'ShortYear.2',
// month
mm: 'MonthNumber.2',
m: 'MonthNumber',
mmm: 'AbbrMonthName',
mmmm: 'MonthName',
// day
dd: 'Date.2',
d: 'Date',
ddd: 'AbbrDayName',
dddd: 'DayName',
w: 'Day',
// hours
hh24: 'Hours.2',
h24: 'Hours',
hh: 'Hours12.2',
hh12: 'Hours12.2',
h12: 'Hours12',
am: 'AmPm',
pm: 'AmPm',
// minutes
mi: 'Minutes.2',
// seconds
ss: 'Seconds.2'
},
//
// shortcuts that will be translated into their longer version
//
// be sure that format shortcuts do not refer to themselves: this will cause an infinite loop
//
shortcuts: {}
};
// add uppercase versions of each code
var keys = 'yyyy yy mm m mmm mmmm dd d ddd dddd w hh24 h24 hh12 h12 am pm mi ss'.split(' '), i = 0, key;
while ((key = keys[i++])) {
formatSql.codes[key.toUpperCase()] = formatSql.codes[key];
}
Date.addFormat('formatSql', formatSql);
/**
* A list of conversion patterns (array arguments sent directly to our gsub function)
* Use Date.addFormat() or Date.removeFormat() to customize date parsing ability
*
* formats that all browsers seem to safely handle:
* Mar 15, 2010
* March 15, 2010
* 3/15/2010
* 03/15/2010
*
* pattern for year 1000 through 9999: ([1-9]\d{3})
* pattern for month number: (1[0-2]|0?[1-9])
* pattern for month name: (?:(jan|feb|mar|apr|may|jun|jul|aug|sep|oct|nov|dec)[a-z]*)
* pattern for day of month: (3[01]|[12]\d|0?[1-9])
*/
Date.create.patterns = [
// 2010-03-15
['iso_8601', /^([1-9]\d{3})\s*-\s*(1[0-2]|0?[1-9])\s*-\s*(3[01]|[12]\d|0?[1-9])$/, '$2/$3/$1'],
// 3-15-2010
['us', /^(1[0-2]|0?[1-9])\s*[\/-]\s*(3[01]|[12]\d|0?[1-9])\s*[\/-]\s*([1-9]\d{3})$/, '$1/$2/$3'],
// 15.03.2010
['world', /^(3[01]|[12]\d|0?[1-9])\s*([\.\/])s*(1[0-2]|0?[1-9])\s*\2\s*([1-9]\d{3})$/, '$3/$1/$4'],
// 15-Mar-2010, 8 Dec 2011, "Thu, 8 Dec 2011"
['chicago', /^(?:(?:mon|tue|wed|thu|fri|sat|sun)[a-z]*,\s+)?(3[01]|[0-2]\d|\d)\s*([ -])\s*(?:(jan|feb|mar|apr|may|jun|jul|aug|sep|oct|nov|dec)[a-z]*)\s*\2\s*([1-9]\d{3})$/i, '$3 $1, $4'],
// March 15, 2010
['conversational', /^(?:(jan|feb|mar|apr|may|jun|jul|aug|sep|oct|nov|dec)[a-z]*)\s+(3[01]|[0-2]\d|\d),?\s*([1-9]\d{3})$/i, '$1 $2, $3'],
['unix',
/^@(-?\d+)$/,
function(match) {
return Date.create(match[1] * 1000);
}],
// 24-hour time
['24_hour',
/^(?:(.+?)(?:\s+|T))?([01]\d|2[0-3])(?:\s*\:\s*([0-5]\d))(?:\s*\:\s*([0-5]\d))?\s*(?:\.(\d+))?(\s*[+-](?:[01]\d|2[0-3])\:?[0-5]\d)?$/i,
// ^opt. date ^hour ^minute ^opt. second ^opt. fraction ^opt. offset hr. ^opt. offset min
function(match) {
var d;
if (match[1]) {
d = Date.create(match[1]);
if (isNaN(d)) {
return false;
}
} else {
d = Date.current();
d.setMilliseconds(0);
}
d.setHours(parseFloat(match[2]), parseFloat(match[3]), parseFloat(match[4] || 0));
if (match[5]) {
d.setMilliseconds(match[5]);
}
if (match[6]) {
d.setUTCOffsetString(match[6]);
}
return d;
}],
// 12-hour time
['12_hour',
/^(?:(.+)\s+)?(0?[1-9]|1[012])(?:\s*\:\s*([0-5]\d))?(?:\s*\:\s*([0-5]\d))?\s*(am|pm)\s*$/i,
// ^opt. date ^hour ^optional minute ^optional second ^am or pm
function(match) {
var d;
if (match[1]) {
d = Date.create(match[1]);
if (isNaN(d)) {
return false;
}
} else {
d = Date.current();
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;
}],
// 2 weeks after today, 3 months after 3-5-2008
['weeks_months_before_after',
/^(\d+)\s+(year|month|week|day|hour|minute|second)s?\s+(before|from|after)\s+(.+)$/i,
function(match) {
var fromDate = Date.create(match[4]);
if (fromDate instanceof Date) {
return fromDate.add((match[3].toLowerCase() == 'before' ? -1 : 1) * match[1], match[2]);
}
return false;
}],
// 5 months ago
['time_ago',
/^(\d+)\s+(year|month|week|day|hour|minute|second)s?\s+ago$/i,
function(match) {
return Date.current().add(-1 * match[1], match[2]);
}],
// in 2 hours/weeks/etc.
['in_time',
/^in\s+(\d+)\s+(year|month|week|day|hour|minute|second)s?$/i,
function(match) {