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authorMatt A. Tobin <mattatobin@localhost.localdomain>2018-02-02 04:16:08 -0500
committerMatt A. Tobin <mattatobin@localhost.localdomain>2018-02-02 04:16:08 -0500
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Add m-esr52 at 52.6.0
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+/* -*- indent-tabs-mode: nil; js-indent-level: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+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;
+
+this.EXPORTED_SYMBOLS = ["ISO8601DateUtils"];
+
+debug("*** loading ISO8601DateUtils\n");
+
+this.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;
+ }
+}