RetroZilla/mailnews/base/resources/content/dateFormat.js

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2015-10-21 05:03:22 +02:00
/* -*- Mode: Java; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/* ***** 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 Communicator client code.
*
* The Initial Developer of the Original Code is
* Netscape Communications Corporation.
* Portions created by the Initial Developer are Copyright (C) 1998
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* Alec Flett <alecf@netscape.com>
* Seth Spitzer <sspitzer@netscape.com>
*
* Alternatively, the contents of this file may be used under the terms of
* either of 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
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* 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 ***** */
var gSearchDateFormat = 0;
var gSearchDateSeparator;
// Get the short date format option of the current locale.
// This supports the common case which the date separator is
// either '/', '-', '.' and using Christian year.
function getLocaleShortDateFormat()
{
// default to mm/dd/yyyy
gSearchDateFormat = 3;
gSearchDateSeparator = "/";
try {
var dateFormatService = Components.classes["@mozilla.org/intl/scriptabledateformat;1"]
.getService(Components.interfaces.nsIScriptableDateFormat);
var dateString = dateFormatService.FormatDate("",
dateFormatService.dateFormatShort,
1999,
12,
31);
// find out the separator
var possibleSeparators = "/-.";
var arrayOfStrings;
for ( var i = 0; i < possibleSeparators.length; ++i )
{
arrayOfStrings = dateString.split( possibleSeparators[i] );
if ( arrayOfStrings.length == 3 )
{
gSearchDateSeparator = possibleSeparators[i];
break;
}
}
// check the format option
if ( arrayOfStrings.length != 3 ) // no successfull split
{
dump("getLocaleShortDateFormat: could not analyze the date format, defaulting to mm/dd/yyyy\n");
}
else
{
if ( arrayOfStrings[0] == "31" )
{
// 31.12.1999 or 31.1992.12
gSearchDateFormat = arrayOfStrings[1] == "12" ? 5 : 6;
}
else if ( arrayOfStrings[1] == "31" )
{
// 12.31.1999 or 1999.31.12
gSearchDateFormat = arrayOfStrings[0] == "12" ? 3 : 2;
}
else // implies arrayOfStrings[2] == "31"
{
// 12.1999.31 or 1999.12.31
gSearchDateFormat = arrayOfStrings[0] == "12" ? 4 : 1;
}
}
}
catch (e)
{
dump("getLocaleShortDateFormat: caught an exception!\n");
}
}
function initializeSearchDateFormat()
{
if (gSearchDateFormat)
return;
// get a search date format option and a seprator
try {
var pref = Components.classes["@mozilla.org/preferences-service;1"]
.getService(Components.interfaces.nsIPrefBranch);
gSearchDateFormat =
pref.getComplexValue("mailnews.search_date_format",
Components.interfaces.nsIPrefLocalizedString);
gSearchDateFormat = parseInt(gSearchDateFormat);
// if the option is 0 then try to use the format of the current locale
if (gSearchDateFormat == 0)
getLocaleShortDateFormat();
else
{
if (gSearchDateFormat < 1 || gSearchDateFormat > 6)
gSearchDateFormat = 3;
gSearchDateSeparator =
pref.getComplexValue("mailnews.search_date_separator",
Components.interfaces.nsIPrefLocalizedString);
}
} catch (ex) {
// set to mm/dd/yyyy in case of error
gSearchDateFormat = 3;
gSearchDateSeparator = "/";
}
}
function convertPRTimeToString(tm)
{
var time = new Date();
// PRTime is in microseconds, Javascript time is in milliseconds
// so divide by 1000 when converting
time.setTime(tm / 1000);
return convertDateToString(time);
}
function convertDateToString(time)
{
var year, month, date;
initializeSearchDateFormat();
year = 1900 + time.getYear();
month = time.getMonth() + 1; // since js month is 0-11
date = time.getDate();
var dateStr;
var sep = gSearchDateSeparator;
switch (gSearchDateFormat)
{
case 1:
dateStr = year + sep + month + sep + date;
break;
case 2:
dateStr = year + sep + date + sep + month;
break;
case 3:
dateStr = month + sep + date + sep + year;
break;
case 4:
dateStr = month + sep + year + sep + date;
break;
case 5:
dateStr = date + sep + month + sep + year;
break;
case 6:
dateStr = date + sep + year + sep + month;
break;
default:
dump("valid search date format option is 1-6\n");
}
return dateStr;
}
function convertStringToPRTime(str)
{
initializeSearchDateFormat();
var arrayOfStrings = str.split(gSearchDateSeparator);
var year, month, date;
// set year, month, date based on the format option
switch (gSearchDateFormat)
{
case 1:
year = arrayOfStrings[0];
month = arrayOfStrings[1];
date = arrayOfStrings[2];
break;
case 2:
year = arrayOfStrings[0];
month = arrayOfStrings[2];
date = arrayOfStrings[1];
break;
case 3:
year = arrayOfStrings[2];
month = arrayOfStrings[0];
date = arrayOfStrings[1];
break;
case 4:
year = arrayOfStrings[1];
month = arrayOfStrings[0];
date = arrayOfStrings[2];
break;
case 5:
year = arrayOfStrings[2];
month = arrayOfStrings[1];
date = arrayOfStrings[0];
break;
case 6:
year = arrayOfStrings[1];
month = arrayOfStrings[2];
date = arrayOfStrings[0];
break;
default:
dump("valid search date format option is 1-6\n");
}
month -= 1; // since js month is 0-11
var time = new Date(year, month, date);
// Javascript time is in milliseconds, PRTime is in microseconds
// so multiply by 1000 when converting
return (time.getTime() * 1000);
}