/*
* Part of "timezone-js" <https://github.com/mde/timezone-js>
*
* Copyright 2010 Matthew Eernisse (mde@fleegix.org)
* and Open Source Applications Foundation
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
* Credits: Ideas included from incomplete JS implementation of Olson
* parser, "XMLDAte" by Philippe Goetz (philippe.goetz@wanadoo.fr)
*
* Contributions:
* Jan Niehusmann
* Ricky Romero
* Preston Hunt (prestonhunt@gmail.com),
* Dov. B Katz (dov.katz@morganstanley.com),
* Peter Bergström (pbergstr@mac.com)
*/
if (typeof fleegix == 'undefined') { var fleegix = {}; }
if (typeof timezoneJS == 'undefined') { timezoneJS = {}; }
timezoneJS.Date = function () {
var args = Array.prototype.slice.apply(arguments);
var t = null;
var dt = null;
var tz = null;
var utc = false;
// No args -- create a floating date based on the current local offset
if (args.length === 0) {
dt = new Date();
}
// Date string or timestamp -- assumes floating
else if (args.length == 1) {
dt = new Date(args[0]);
}
// year, month, [date,] [hours,] [minutes,] [seconds,] [milliseconds,] [tzId,] [utc]
else {
t = args[args.length-1];
// Last arg is utc
if (typeof t == 'boolean') {
utc = args.pop();
tz = args.pop();
}
// Last arg is tzId
else if (typeof t == 'string') {
tz = args.pop();
if (tz == 'Etc/UTC' || tz == 'Etc/GMT') {
utc = true;
}
}
// Date string (e.g., '12/27/2006')
t = args[args.length-1];
if (typeof t == 'string') {
dt = new Date(args[0]);
}
// Date part numbers
else {
var a = [];
for (var i = 0; i < 8; i++) {
a[i] = args[i] || 0;
}
dt = new Date(a[0], a[1], a[2], a[3], a[4], a[5], a[6], a[7]);
}
}
this._useCache = false;
this._tzInfo = {};
this._tzAbbr = '';
this._day = 0;
this.year = 0;
this.month = 0;
this.date = 0;
this.hours= 0;
this.minutes = 0;
this.seconds = 0;
this.milliseconds = 0;
this.timezone = tz || null;
this.utc = utc || false;
this.setFromDateObjProxy(dt);
};
timezoneJS.Date.prototype = {
getDate: function () { return this.date; },
getDay: function () { return this._day; },
getFullYear: function () { return this.year; },
getMonth: function () { return this.month; },
getYear: function () { return this.year; },
getHours: function () {
return this.hours;
},
getMilliseconds: function () {
return this.milliseconds;
},
getMinutes: function () {
return this.minutes;
},
getSeconds: function () {
return this.seconds;
},
getTime: function () {
var dt = Date.UTC(this.year, this.month, this.date,
this.hours, this.minutes, this.seconds, this.milliseconds);
return dt + (this.getTimezoneOffset()*60*1000);
},
getTimezone: function () {
return this.timezone;
},
getTimezoneOffset: function () {
var info = this.getTimezoneInfo();
return info.tzOffset;
},
getTimezoneAbbreviation: function () {
var info = this.getTimezoneInfo();
return info.tzAbbr;
},
getTimezoneInfo: function () {
var res;
if (this.utc) {
res = { tzOffset: 0,
tzAbbr: 'UTC' };
}
else {
if (this._useCache) {
res = this._tzInfo;
}
else {
if (this.timezone) {
var dt = new Date(Date.UTC(this.year, this.month, this.date,
this.hours, this.minutes, this.seconds, this.milliseconds));
var tz = this.timezone;
res = timezoneJS.timezone.getTzInfo(dt, tz);
}
// Floating -- use local offset
else {
res = { tzOffset: this.getLocalOffset(),
tzAbbr: null };
}
this._tzInfo = res;
this._useCache = true;
}
}
return res;
},
getUTCDate: function () {
return this.getUTCDateProxy().getUTCDate();
},
getUTCDay: function () {
return this.getUTCDateProxy().getUTCDay();
},
getUTCFullYear: function () {
return this.getUTCDateProxy().getUTCFullYear();
},
getUTCHours: function () {
return this.getUTCDateProxy().getUTCHours();
},
getUTCMilliseconds: function () {
return this.getUTCDateProxy().getUTCMilliseconds();
},
getUTCMinutes: function () {
return this.getUTCDateProxy().getUTCMinutes();
},
getUTCMonth: function () {
return this.getUTCDateProxy().getUTCMonth();
},
getUTCSeconds: function () {
return this.getUTCDateProxy().getUTCSeconds();
},
setDate: function (n) {
this.setAttribute('date', n);
},
setFullYear: function (n) {
this.setAttribute('year', n);
},
setMonth: function (n) {
this.setAttribute('month', n);
},
setYear: function (n) {
this.setUTCAttribute('year', n);
},
setHours: function (n) {
this.setAttribute('hours', n);
},
setMilliseconds: function (n) {
this.setAttribute('milliseconds', n);
},
setMinutes: function (n) {
this.setAttribute('minutes', n);
},
setSeconds: function (n) {
this.setAttribute('seconds', n);
},
setTime: function (n) {
if (isNaN(n)) { throw new Error('Units must be a number.'); }
var dt = new Date(0);
dt.setUTCMilliseconds(n - (this.getTimezoneOffset()*60*1000));
this.setFromDateObjProxy(dt, true);
},
setUTCDate: function (n) {
this.setUTCAttribute('date', n);
},
setUTCFullYear: function (n) {
this.setUTCAttribute('year', n);
},
setUTCHours: function (n) {
this.setUTCAttribute('hours', n);
},
setUTCMilliseconds: function (n) {
this.setUTCAttribute('milliseconds', n);
},
setUTCMinutes: function (n) {
this.setUTCAttribute('minutes', n);
},
setUTCMonth: function (n) {
this.setUTCAttribute('month', n);
},
setUTCSeconds: function (n) {
this.setUTCAttribute('seconds', n);
},
toGMTString: function () {},
toLocaleString: function () {},
toLocaleDateString: function () {},
toLocaleTimeString: function () {},
toSource: function () {},
toString: function () {
// Get a quick looky at what's in there
var str = this.getFullYear() + '-' + (this.getMonth()+1) + '-' + this.getDate();
var hou = this.getHours() || 12;
hou = String(hou);
var min = String(this.getMinutes());
if (min.length == 1) { min = '0' + min; }
var sec = String(this.getSeconds());
if (sec.length == 1) { sec = '0' + sec; }
str += ' ' + hou;
str += ':' + min;
str += ':' + sec;
return str;
},
toUTCString: function () {},
valueOf: function () {
return this.getTime();
},
clone: function () {
return new timezoneJS.Date(this.year, this.month, this.date,
this.hours, this.minutes, this.seconds, this.milliseconds,
this.timezone);
},
setFromDateObjProxy: function (dt, fromUTC) {
this.year = fromUTC ? dt.getUTCFullYear() : dt.getFullYear();
this.month = fromUTC ? dt.getUTCMonth() : dt.getMonth();
this.date = fromUTC ? dt.getUTCDate() : dt.getDate();
this.hours = fromUTC ? dt.getUTCHours() : dt.getHours();
this.minutes = fromUTC ? dt.getUTCMinutes() : dt.getMinutes();
this.seconds = fromUTC ? dt.getUTCSeconds() : dt.getSeconds();
this.milliseconds = fromUTC ? dt.getUTCMilliseconds() : dt.getMilliseconds();
this._day = fromUTC ? dt.getUTCDay() : dt.getDay();
this._useCache = false;
},
getUTCDateProxy: function () {
var dt = new Date(Date.UTC(this.year, this.month, this.date,
this.hours, this.minutes, this.seconds, this.milliseconds));
dt.setUTCMinutes(dt.getUTCMinutes() + this.getTimezoneOffset());
return dt;
},
setAttribute: function (unit, n) {
if (isNaN(n)) { throw new Error('Units must be a number.'); }
var dt = new Date(this.year, this.month, this.date,
this.hours, this.minutes, this.seconds, this.milliseconds);
var meth = unit == 'year' ? 'FullYear' : unit.substr(0, 1).toUpperCase() +
unit.substr(1);
dt['set' + meth](n);
this.setFromDateObjProxy(dt);
},
setUTCAttribute: function (unit, n) {
if (isNaN(n)) { throw new Error('Units must be a number.'); }
var meth = unit == 'year' ? 'FullYear' : unit.substr(0, 1).toUpperCase() +
unit.substr(1);
var dt = this.getUTCDateProxy();
dt['setUTC' + meth](n);
dt.setUTCMinutes(dt.getUTCMinutes() - this.getTimezoneOffset());
this.setFromDateObjProxy(dt, true);
},
setTimezone: function (tz) {
if (tz == 'Etc/UTC' || tz == 'Etc/GMT') {
this.utc = true;
}
this.timezone = tz;
this._useCache = false;
},
removeTimezone: function () {
this.utc = false;
this.timezone = null;
this._useCache = false;
},
civilToJulianDayNumber: function (y, m, d) {
var a;
// Adjust for zero-based JS-style array
m++;
if (m > 12) {
a = parseInt(m/12, 10);
m = m % 12;
y += a;
}
if (m <= 2) {
y -= 1;
m += 12;
}
a = Math.floor(y / 100);
var b = 2 - a + Math.floor(a / 4);
jDt = Math.floor(365.25 * (y + 4716)) +
Math.floor(30.6001 * (m + 1)) +
d + b - 1524;
return jDt;
},
getLocalOffset: function () {
var dt = this;
var d = new Date(dt.getYear(), dt.getMonth(), dt.getDate(),
dt.getHours(), dt.getMinutes(), dt.getSeconds());
return d.getTimezoneOffset();
}
};
timezoneJS.timezone = new function() {
var _this = this;
var monthMap = { 'jan': 0, 'feb': 1, 'mar': 2, 'apr': 3,'may': 4, 'jun': 5,
'jul': 6, 'aug': 7, 'sep': 8, 'oct': 9, 'nov': 10, 'dec': 11 };
var dayMap = {'sun': 0,'mon' :1, 'tue': 2, 'wed': 3, 'thu': 4, 'fri': 5, 'sat': 6 };
var regionMap = {'EST':'northamerica','MST':'northamerica','HST':'northamerica','EST5EDT':'northamerica','CST6CDT':'northamerica','MST7MDT':'northamerica','PST8PDT':'northamerica','America':'northamerica','Pacific':'australasia','Atlantic':'europe','Africa':'africa','Indian':'africa','Antarctica':'antarctica','Asia':'asia','Australia':'australasia','Europe':'europe','WET':'europe','CET':'europe','MET':'europe','EET':'europe'};
var regionExceptions = {'Pacific/Honolulu':'northamerica','Atlantic/Bermuda':'northamerica','Atlantic/Cape_Verde':'africa','Atlantic/St_Helena':'africa','Indian/Kerguelen':'antarctica','Indian/Chagos':'asia','Indian/Maldives':'asia','Indian/Christmas':'australasia','Indian/Cocos':'australasia','America/Danmarkshavn':'europe','America/Scoresbysund':'europe','America/Godthab':'europe','America/Thule':'europe','Asia/Yekaterinburg':'europe','Asia/Omsk':'europe','Asia/Novosibirsk':'europe','Asia/Krasnoyarsk':'europe','Asia/Irkutsk':'europe','Asia/Yakutsk':'europe','Asia/Vladivostok':'europe','Asia/Sakhalin':'europe','Asia/Magadan':'europe','Asia/Kamchatka':'europe','Asia/Anadyr':'europe','Africa/Ceuta':'europe','America/Argentina/Buenos_Aires':'southamerica','America/Argentina/Cordoba':'southamerica','America/Argentina/Tucuman':'southamerica','America/Argentina/La_Rioja':'southamerica','America/Argentina/San_Juan':'southamerica','America/Argentina/Jujuy':'southamerica','America/Argentina/Catamarca':'southamerica','America/Argentina/Mendoza':'southamerica','America/Argentina/Rio_Gallegos':'southamerica','America/Argentina/Ushuaia':'southamerica','America/Aruba':'southamerica','America/La_Paz':'southamerica','America/Noronha':'southamerica','America/Belem':'southamerica','America/Fortaleza':'southamerica','America/Recife':'southamerica','America/Araguaina':'southamerica','America/Maceio':'southamerica','America/Bahia':'southamerica','America/Sao_Paulo':'southamerica','America/Campo_Grande':'southamerica','America/Cuiaba':'southamerica','America/Porto_Velho':'southamerica','America/Boa_Vista':'southamerica','America/Manaus':'southamerica','America/Eirunepe':'southamerica','America/Rio_Branco':'southamerica','America/Santiago':'southamerica','Pacific/Easter':'southamerica','America/Bogota':'southamerica','America/Curacao':'southamerica','America/Guayaquil':'southamerica','Pacific/Galapagos':'southamerica','Atlantic/Stanley':'southamerica','America/Cayenne':'southamerica','America/Guyana':'southamerica','America/Asuncion':'southamerica','America/Lima':'southamerica','Atlantic/South_Georgia':'southamerica','America/Paramaribo':'southamerica','America/Port_of_Spain':'southamerica','America/Montevideo':'southamerica','America/Caracas':'southamerica'};
function invalidTZError(t) {
throw new Error('Timezone "' + t + '" is either incorrect, or not loaded in the timezone registry.');
}
function builtInLoadZoneFile(fileName, opts) {
var ajaxRequest = {
url: _this.zoneFileBasePath + '/' + fileName,
async: !!opts.async,
dataType: "text",
done: false,
success: function (str) {
if (_this.parseZones(str)) {
if (typeof opts.callback == 'function') {
opts.callback();
}
}
this.done = true;
},
error: function () {
throw new Error('Error retrieving "' + url + '" zoneinfo file.');
}
};
var res = $.ajax(ajaxRequest);
return ajaxRequest.done;
}
function getRegionForTimezone(tz) {
var exc = regionExceptions[tz];
var ret;
if (exc) {
return exc;
}
else {
reg = tz.split('/')[0];
ret = regionMap[reg];
// If there's nothing listed in the main regions for
// this TZ, check the 'backward' links
if (!ret) {
var link = _this.zones[tz];
if (typeof link == 'string') {
return getRegionForTimezone(link);
}
else {
// Backward-compat file hasn't loaded yet, try looking in there
if (!_this.loadedZones.backward) {
// This is for obvious legacy zones (e.g., Iceland) that
// don't even have a prefix like "America/" that look like
// normal zones
var parsed = _this.loadZoneFile('backward', true);
return getRegionForTimezone(tz);
}
else {
invalidTZError(tz);
}
}
}
return ret;
}
}
function parseTimeString(str) {
var pat = /(\d+)(?::0*(\d*))?(?::0*(\d*))?([wsugz])?$/;
var hms = str.match(pat);
hms[1] = parseInt(hms[1], 10);
hms[2] = hms[2] ? parseInt(hms[2], 10) : 0;
hms[3] = hms[3] ? parseInt(hms[3], 10) : 0;
return hms;
}
function getZone(dt, tz) {
var t = tz;
var zoneList = _this.zones[t];
// Follow links to get to an acutal zone
while (typeof zoneList == "string") {
t = zoneList;
zoneList = _this.zones[t];
}
if (!zoneList) {
// Backward-compat file hasn't loaded yet, try looking in there
if (!_this.loadedZones.backward) {
// This is for backward entries like "America/Fort_Wayne" that
// getRegionForTimezone *thinks* it has a region file and zone
// for (e.g., America => 'northamerica'), but in reality it's a
// legacy zone we need the backward file for
var parsed = _this.loadZoneFile('backward', true);
return getZone(dt, tz);
}
invalidTZError(t);
}
for(var i = 0; i < zoneList.length; i++) {
var z = zoneList[i];
if (!z[3]) { break; }
var yea = parseInt(z[3], 10);
var mon = 11;
var dat = 31;
if (z[4]) {
mon = monthMap[z[4].substr(0, 3).toLowerCase()];
dat = parseInt(z[5], 10);
}
var t = z[6] ? z[6] : '23:59:59';
t = parseTimeString(t);
var d = Date.UTC(yea, mon, dat, t[1], t[2], t[3]);
if (dt.getTime() < d) { break; }
}
if (i == zoneList.length) { throw new Error('No Zone found for "' + timezone + '" on ' + dt); }
return zoneList[i];
}
function getBasicOffset(z) {
var off = parseTimeString(z[0]);
var adj = z[0].indexOf('-') == 0 ? -1 : 1
off = adj * (((off[1] * 60 + off[2]) *60 + off[3]) * 1000);
return -off/60/1000;
}
// if isUTC is true, date is given in UTC, otherwise it's given
// in local time (ie. date.getUTC*() returns local time components)
function getRule( date, zone, isUTC ) {
var ruleset = zone[1];
var basicOffset = getBasicOffset( zone );
// Convert a date to UTC. Depending on the 'type' parameter, the date
// parameter may be:
// 'u', 'g', 'z': already UTC (no adjustment)
// 's': standard time (adjust for time zone offset but not for DST)
// 'w': wall clock time (adjust for both time zone and DST offset)
//
// DST adjustment is done using the rule given as third argument
var convertDateToUTC = function( date, type, rule ) {
var offset = 0;
if(type == 'u' || type == 'g' || type == 'z') { // UTC
offset = 0;
} else if(type == 's') { // Standard Time
offset = basicOffset;
} else if(type == 'w' || !type ) { // Wall Clock Time
offset = getAdjustedOffset(basicOffset,rule);
} else {
throw("unknown type "+type);
}
offset *= 60*1000; // to millis
return new Date( date.getTime() + offset );
}
// Step 1: Find applicable rules for this year.
// Step 2: Sort the rules by effective date.
// Step 3: Check requested date to see if a rule has yet taken effect this year. If not,
// Step 4: Get the rules for the previous year. If there isn't an applicable rule for last year, then
// there probably is no current time offset since they seem to explicitly turn off the offset
// when someone stops observing DST.
// FIXME if this is not the case and we'll walk all the way back (ugh).
// Step 5: Sort the rules by effective date.
// Step 6: Apply the most recent rule before the current time.
var convertRuleToExactDateAndTime = function( yearAndRule, prevRule )
{
var year = yearAndRule[0];
var rule = yearAndRule[1];
// Assume that the rule applies to the year of the given date.
var months = {
"Jan": 0, "Feb": 1, "Mar": 2, "Apr": 3, "May": 4, "Jun": 5,
"Jul": 6, "Aug": 7, "Sep": 8, "Oct": 9, "Nov": 10, "Dec": 11
};
var days = {
"sun": 0, "mon": 1, "tue": 2, "wed": 3, "thu": 4, "fri": 5, "sat": 6
}
var hms = parseTimeString( rule[ 5 ] );
var effectiveDate;
if ( !isNaN( rule[ 4 ] ) ) // If we have a specific date, use that!
{
effectiveDate = new Date( Date.UTC( year, months[ rule[ 3 ] ], rule[ 4 ], hms[ 1 ], hms[ 2 ], hms[ 3 ], 0 ) );
}
else // Let's hunt for the date.
{
var targetDay,
operator;
if ( rule[ 4 ].substr( 0, 4 ) === "last" ) // Example: lastThu
{
// Start at the last day of the month and work backward.
effectiveDate = new Date( Date.UTC( year, months[ rule[ 3 ] ] + 1, 1, hms[ 1 ] - 24, hms[ 2 ], hms[ 3 ], 0 ) );
targetDay = days[ rule[ 4 ].substr( 4, 3 ).toLowerCase( ) ];
operator = "<=";
}
else // Example: Sun>=15
{
// Start at the specified date.
effectiveDate = new Date( Date.UTC( year, months[ rule[ 3 ] ], rule[ 4 ].substr( 5 ), hms[ 1 ], hms[ 2 ], hms[ 3 ], 0 ) );
targetDay = days[ rule[ 4 ].substr( 0, 3 ).toLowerCase( ) ];
operator = rule[ 4 ].substr( 3, 2 );
}
var ourDay = effectiveDate.getUTCDay( );
if ( operator === ">=" ) // Go forwards.
{
effectiveDate.setUTCDate( effectiveDate.getUTCDate( ) + ( targetDay - ourDay + ( ( targetDay < ourDay ) ? 7 : 0 ) ) );
}
else // Go backwards. Looking for the last of a certain day, or operator is "<=" (less likely).
{
effectiveDate.setUTCDate( effectiveDate.getUTCDate( ) + ( targetDay - ourDay - ( ( targetDay > ourDay ) ? 7 : 0 ) ) );
}
}
// if previous rule is given, correct for the fact that the starting time of the current
// rule may be specified in local time
if(prevRule) {
effectiveDate = convertDateToUTC(effectiveDate, hms[4], prevRule);
}
return effectiveDate;
}
var indexOf = function(array, what, startAt) {
if(array.indexOf) {
return array.indexOf(what,startAt);
}
for (var i = (startAt || 0); i < array.length; i++) {
if (array[i] == what) {
return i;
}
}
return -1;
};
var findApplicableRules = function( year, ruleset )
{
var applicableRules = [];
for ( var i in ruleset )
{
if ( Number( ruleset[ i ][ 0 ] ) <= year ) // Exclude future rules.
{
if (
Number( ruleset[ i ][ 1 ] ) >= year // Date is in a set range.
|| ( Number( ruleset[ i ][ 0 ] ) === year && ruleset[ i ][ 1 ] === "only" ) // Date is in an "only" year.
|| ruleset[ i ][ 1 ] === "max" // We're in a range from the start year to infinity.
)
{
// It's completely okay to have any number of matches here.
// Normally we should only see two, but that doesn't preclude other numbers of matches.
// These matches are applicable to this year.
applicableRules.push( [year, ruleset[ i ]] );
}
}
}
return applicableRules;
}
var compareDates = function( a, b, prev )
{
if ( a.constructor !== Date ) {
a = convertRuleToExactDateAndTime( a, prev );
} else if(prev) {
a = convertDateToUTC(a, isUTC?'u':'w', prev);
}
if ( b.constructor !== Date ) {
b = convertRuleToExactDateAndTime( b, prev );
} else if(prev) {
b = convertDateToUTC(b, isUTC?'u':'w', prev);
}
a = Number( a );
b = Number( b );
return a - b;
}
var year = date.getUTCFullYear( );
var applicableRules;
applicableRules = findApplicableRules( year, _this.rules[ ruleset ] );
applicableRules.push( date );
// While sorting, the time zone in which the rule starting time is specified
// is ignored. This is ok as long as the timespan between two DST changes is
// larger than the DST offset, which is probably always true.
// As the given date may indeed be close to a DST change, it may get sorted
// to a wrong position (off by one), which is corrected below.
applicableRules.sort( compareDates );
if ( indexOf(applicableRules, date ) < 2 ) { // If there are not enough past DST rules...
applicableRules = applicableRules.concat(findApplicableRules( year-1, _this.rules[ ruleset ] ));
applicableRules.sort( compareDates );
}
var pinpoint = indexOf(applicableRules, date);
if ( pinpoint > 1 && compareDates( date, applicableRules[pinpoint-1], applicableRules[pinpoint-2][1] ) < 0 ) {
// the previous rule does not really apply, take the one before that
return applicableRules[ pinpoint - 2 ][1];
} else if ( pinpoint > 0 && pinpoint < applicableRules.length - 1 && compareDates( date, applicableRules[pinpoint+1], applicableRules[pinpoint-1][1] ) > 0) {
// the next rule does already apply, take that one
return applicableRules[ pinpoint + 1 ][1];
} else if ( pinpoint === 0 ) {
// no applicable rule found in this and in previous year
return null;
} else {
return applicableRules[ pinpoint - 1 ][1];
}
}
function getAdjustedOffset(off, rule) {
var save = rule[6];
var t = parseTimeString(save);
var adj = save.indexOf('-') == 0 ? -1 : 1;
var ret = (adj*(((t[1] *60 + t[2]) * 60 + t[3]) * 1000));
ret = ret/60/1000;
ret -= off
ret = -Math.ceil(ret);
return ret;
}
function getAbbreviation(zone, rule) {
var res;
var base = zone[2];
if (base.indexOf('%s') > -1) {
var repl;
if (rule) {
repl = rule[7]=='-'?'':rule[7];
}
// FIXME: Right now just falling back to Standard --
// apparently ought to use the last valid rule,
// although in practice that always ought to be Standard
else {
repl = 'S';
}
res = base.replace('%s', repl);
}
else if (base.indexOf('/') > -1) {
// chose one of two alternative strings
var t = parseTimeString(rule[6]);
var isDst = (t[1])||(t[2])||(t[3]);
res = base.split("/",2)[isDst?1:0];
} else {
res = base;
}
return res;
}
this.zoneFileBasePath;
this.zoneFiles = ['africa', 'antarctica', 'asia',
'australasia', 'backward', 'etcetera', 'europe',
'northamerica', 'pacificnew', 'southamerica'];
this.loadingSchemes = {
PRELOAD_ALL: 'preloadAll',
LAZY_LOAD: 'lazyLoad',
MANUAL_LOAD: 'manualLoad'
}
this.loadingScheme = this.loadingSchemes.LAZY_LOAD;
this.defaultZoneFile =
this.loadingScheme == this.loadingSchemes.PRELOAD_ALL ?
this.zoneFiles : 'northamerica';
this.loadedZones = {};
this.zones = {};
this.rules = {};
this.init = function (o) {
var opts = { async: true };
var sync = false;
var def = this.defaultZoneFile;
var parsed;
// Override default with any passed-in opts
for (var p in o) {
opts[p] = o[p];
}
if (typeof def == 'string') {
parsed = this.loadZoneFile(def, opts);
}
else {
if (opts.callback) {
throw new Error('Async load with callback is not supported for multiple default zonefiles.');
}
for (var i = 0; i < def.length; i++) {
parsed = this.loadZoneFile(def[i], opts);
}
}
};
// Get the zone files via XHR -- if the sync flag
// is set to true, it's being called by the lazy-loading
// mechanism, so the result needs to be returned inline
this.loadZoneFile = function (fileName, opts) {
if (typeof this.zoneFileBasePath == 'undefined') {
throw new Error('Please define a base path to your zone file directory -- timezoneJS.timezone.zoneFileBasePath.');
}
// ========================
// Define your own transport mechanism here
// and comment out the default below
// ========================
var parsed = builtInLoadZoneFile(fileName, opts);
this.loadedZones[fileName] = parsed;
return parsed;
};
this.loadZoneJSONData = function (url, sync) {
var processData = function (data) {
data = eval('('+ data +')');
for (var z in data.zones) {
_this.zones[z] = data.zones[z];
}
for (var r in data.rules) {
_this.rules[r] = data.rules[r];
}
}
if (sync) {
var data = fleegix.xhr.doGet(url);
processData(data);
}
else {
fleegix.xhr.doGet(processData, url);
}
};
this.loadZoneDataFromObject = function (data) {
if (!data) { return; }
for (var z in data.zones) {
_this.zones[z] = data.zones[z];
}
for (var r in data.rules) {
_this.rules[r] = data.rules[r];
}
};
this.getAllZones = function() {
var arr = [];
for (z in this.zones) { arr.push(z); }
return arr.sort();
};
this.parseZones = function(str) {
var s = '';
var lines = str.split('\n');
var arr = [];
var chunk = '';
var zone = null;
var rule = null;
for (var i = 0; i < lines.length; i++) {
l = lines[i];
if (l.match(/^\s/)) {
l = "Zone " + zone + l;
}
l = l.split("#")[0];
if (l.length > 3) {
arr = l.split(/\s+/);
chunk = arr.shift();
switch(chunk) {
case 'Zone':
zone = arr.shift();
if (!_this.zones[zone]) { _this.zones[zone] = [] }
_this.zones[zone].push(arr);
break;
case 'Rule':
rule = arr.shift();
if (!_this.rules[rule]) { _this.rules[rule] = [] }
_this.rules[rule].push(arr);
break;
case 'Link':
// No zones for these should already exist
if (_this.zones[arr[1]]) {
throw new Error('Error with Link ' + arr[1]);
}
// Create the link
_this.zones[arr[1]] = arr[0];
break;
case 'Leap':
break;
default:
// Fail silently
break;
}
}
}
return true;
};
this.getTzInfo = function(dt, tz, isUTC) {
// Lazy-load any zones not yet loaded
if (this.loadingScheme == this.loadingSchemes.LAZY_LOAD) {
// Get the correct region for the zone
var zoneFile = getRegionForTimezone(tz);
if (!zoneFile) {
throw new Error('Not a valid timezone ID.');
}
else {
if (!this.loadedZones[zoneFile]) {
// Get the file and parse it -- use synchronous XHR
var parsed = this.loadZoneFile(zoneFile, true);
}
}
}
var zone = getZone(dt, tz);
var off = getBasicOffset(zone);
// See if the offset needs adjustment
var rule = getRule(dt, zone, isUTC);
if (rule) {
off = getAdjustedOffset(off, rule);
}
var abbr = getAbbreviation(zone, rule);
return { tzOffset: off, tzAbbr: abbr };
}
}