| /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ |
| /* ***** BEGIN LICENSE BLOCK ***** |
| * Version: MPL 1.1/GPL 2.0/LGPL 2.1 |
| * |
| * The contents of this file are subject to the Mozilla Public License Version |
| * 1.1 (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.mozilla.org/MPL/ |
| * |
| * Software distributed under the License is distributed on an "AS IS" basis, |
| * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License |
| * for the specific language governing rights and limitations under the |
| * License. |
| * |
| * The Original Code is mozilla.org code. |
| * |
| * The Initial Developer of the Original Code is Robert Sayre. |
| * Portions created by the Initial Developer are Copyright (C) 2006 |
| * the Initial Developer. All Rights Reserved. |
| * |
| * Contributor(s): |
| * Flock Inc. <erwan@flock.com> |
| * |
| * Alternatively, the contents of this file may be used under the terms of |
| * either the GNU General Public License Version 2 or later (the "GPL"), or |
| * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"), |
| * in which case the provisions of the GPL or the LGPL are applicable instead |
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| * the provisions above, a recipient may use your version of this file under |
| * the terms of any one of the MPL, the GPL or the LGPL. |
| * |
| * ***** END LICENSE BLOCK ***** */ |
| |
| const HOURS_TO_MINUTES = 60; |
| const MINUTES_TO_SECONDS = 60; |
| const SECONDS_TO_MILLISECONDS = 1000; |
| const MINUTES_TO_MILLISECONDS = MINUTES_TO_SECONDS * SECONDS_TO_MILLISECONDS; |
| const HOURS_TO_MILLISECONDS = HOURS_TO_MINUTES * MINUTES_TO_MILLISECONDS; |
| |
| var EXPORTED_SYMBOLS = ["ISO8601DateUtils"]; |
| |
| debug("*** loading ISO8601DateUtils\n"); |
| |
| var ISO8601DateUtils = { |
| |
| /** |
| * XXX Thunderbird's W3C-DTF function |
| * |
| * Converts a W3C-DTF (subset of ISO 8601) date string to a Javascript |
| * date object. W3C-DTF is described in this note: |
| * http://www.w3.org/TR/NOTE-datetime IETF is obtained via the Date |
| * object's toUTCString() method. The object's toString() method is |
| * insufficient because it spells out timezones on Win32 |
| * (f.e. "Pacific Standard Time" instead of "PST"), which Mail doesn't |
| * grok. For info, see |
| * http://lxr.mozilla.org/mozilla/source/js/src/jsdate.c#1526. |
| */ |
| parse: function ISO8601_parse(aDateString) { |
| var dateString = aDateString; |
| if (!dateString.match('-')) { |
| // Workaround for server sending |
| // dates such as: 20030530T11:18:50-08:00 |
| // instead of: 2003-05-30T11:18:50-08:00 |
| var year = dateString.slice(0, 4); |
| var month = dateString.slice(4, 6); |
| var rest = dateString.slice(6, dateString.length); |
| dateString = year + "-" + month + "-" + rest; |
| } |
| |
| var parts = dateString.match(/(\d{4})(-(\d{2,3}))?(-(\d{2}))?(T(\d{2}):(\d{2})(:(\d{2})(\.(\d+))?)?(Z|([+-])(\d{2}):(\d{2}))?)?/); |
| |
| // Here's an example of a W3C-DTF date string and what .match returns for it. |
| // |
| // date: 2003-05-30T11:18:50.345-08:00 |
| // date.match returns array values: |
| // |
| // 0: 2003-05-30T11:18:50-08:00, |
| // 1: 2003, |
| // 2: -05, |
| // 3: 05, |
| // 4: -30, |
| // 5: 30, |
| // 6: T11:18:50-08:00, |
| // 7: 11, |
| // 8: 18, |
| // 9: :50, |
| // 10: 50, |
| // 11: .345, |
| // 12: 345, |
| // 13: -08:00, |
| // 14: -, |
| // 15: 08, |
| // 16: 00 |
| |
| // Create a Date object from the date parts. Note that the Date |
| // object apparently can't deal with empty string parameters in lieu |
| // of numbers, so optional values (like hours, minutes, seconds, and |
| // milliseconds) must be forced to be numbers. |
| var date = new Date(parts[1], parts[3] - 1, parts[5], parts[7] || 0, |
| parts[8] || 0, parts[10] || 0, parts[12] || 0); |
| |
| // We now have a value that the Date object thinks is in the local |
| // timezone but which actually represents the date/time in the |
| // remote timezone (f.e. the value was "10:00 EST", and we have |
| // converted it to "10:00 PST" instead of "07:00 PST"). We need to |
| // correct that. To do so, we're going to add the offset between |
| // the remote timezone and UTC (to convert the value to UTC), then |
| // add the offset between UTC and the local timezone //(to convert |
| // the value to the local timezone). |
| |
| // Ironically, W3C-DTF gives us the offset between UTC and the |
| // remote timezone rather than the other way around, while the |
| // getTimezoneOffset() method of a Date object gives us the offset |
| // between the local timezone and UTC rather than the other way |
| // around. Both of these are the additive inverse (i.e. -x for x) |
| // of what we want, so we have to invert them to use them by |
| // multipying by -1 (f.e. if "the offset between UTC and the remote |
| // timezone" is -5 hours, then "the offset between the remote |
| // timezone and UTC" is -5*-1 = 5 hours). |
| |
| // Note that if the timezone portion of the date/time string is |
| // absent (which violates W3C-DTF, although ISO 8601 allows it), we |
| // assume the value to be in UTC. |
| |
| // The offset between the remote timezone and UTC in milliseconds. |
| var remoteToUTCOffset = 0; |
| if (parts[13] && parts[13] != "Z") { |
| var direction = (parts[14] == "+" ? 1 : -1); |
| if (parts[15]) |
| remoteToUTCOffset += direction * parts[15] * HOURS_TO_MILLISECONDS; |
| if (parts[16]) |
| remoteToUTCOffset += direction * parts[16] * MINUTES_TO_MILLISECONDS; |
| } |
| remoteToUTCOffset = remoteToUTCOffset * -1; // invert it |
| |
| // The offset between UTC and the local timezone in milliseconds. |
| var UTCToLocalOffset = date.getTimezoneOffset() * MINUTES_TO_MILLISECONDS; |
| UTCToLocalOffset = UTCToLocalOffset * -1; // invert it |
| date.setTime(date.getTime() + remoteToUTCOffset + UTCToLocalOffset); |
| |
| return date; |
| }, |
| |
| create: function ISO8601_create(aDate) { |
| function zeropad (s, l) { |
| s = s.toString(); // force it to a string |
| while (s.length < l) { |
| s = '0' + s; |
| } |
| return s; |
| } |
| |
| var myDate; |
| // if d is a number, turn it into a date |
| if (typeof aDate == 'number') { |
| myDate = new Date() |
| myDate.setTime(aDate); |
| } else { |
| myDate = aDate; |
| } |
| |
| // YYYY-MM-DDThh:mm:ssZ |
| var result = zeropad(myDate.getUTCFullYear (), 4) + |
| zeropad(myDate.getUTCMonth () + 1, 2) + |
| zeropad(myDate.getUTCDate (), 2) + 'T' + |
| zeropad(myDate.getUTCHours (), 2) + ':' + |
| zeropad(myDate.getUTCMinutes (), 2) + ':' + |
| zeropad(myDate.getUTCSeconds (), 2) + 'Z'; |
| |
| return result; |
| } |
| } |