gecko-dev/calendar/import-export/calIcsImportExport.js

177 lines
6.4 KiB
JavaScript

/* -*- Mode: javascript; tab-width: 20; 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 Calendar code.
*
* The Initial Developer of the Original Code is
* Michiel van Leeuwen <mvl@exedo.nl>.
* Portions created by the Initial Developer are Copyright (C) 2005
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
*
* 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
* 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 ***** */
// Import
function calIcsImporter() {
this.wrappedJSObject = this;
}
calIcsImporter.prototype.QueryInterface =
function QueryInterface(aIID) {
if (!aIID.equals(Components.interfaces.nsISupports) &&
!aIID.equals(Components.interfaces.calIImporter)) {
throw Components.results.NS_ERROR_NO_INTERFACE;
}
return this;
};
calIcsImporter.prototype.getFileTypes =
function getFileTypes(aCount) {
aCount.value = 1;
var sbs = Components.classes["@mozilla.org/intl/stringbundle;1"]
.getService(Components.interfaces.nsIStringBundleService);
var props = sbs.createBundle("chrome://calendar/locale/calendar.properties");
return([{defaultExtension:'ics',
extensionFilter:'*.ics',
description: props.GetStringFromName('icsDesc')}]);
};
calIcsImporter.prototype.importFromStream =
function ics_importFromStream(aStream, aCount) {
var items = new Array();
// Interpret the byte-array as an utf8 string, and convert into a
// javascript string.
var convStream = Components.classes["@mozilla.org/intl/converter-input-stream;1"]
.getService(Components.interfaces.nsIConverterInputStream);
convStream.init(aStream, 'UTF-8', 0, 0x0000);
var tmpStr = {};
var str = "";
while (convStream.readString(-1, tmpStr)) {
str += tmpStr.value;
}
icssrv = Components.classes["@mozilla.org/calendar/ics-service;1"]
.getService(Components.interfaces.calIICSService);
var rootComp = icssrv.parseICS(str);
var calComp;
// libical returns the vcalendar component if there is just
// one vcalendar. If there are multiple vcalendars, it returns
// an xroot component, with those vcalendar childs. We need to
// handle both.
if (rootComp.componentType == 'VCALENDAR') {
calComp = rootComp;
} else {
calComp = rootComp.getFirstSubcomponent('VCALENDAR');
}
while (calComp) {
var subComp = calComp.getFirstSubcomponent("ANY");
while (subComp) {
switch (subComp.componentType) {
case "VEVENT":
var event = Components.classes["@mozilla.org/calendar/event;1"]
.createInstance(Components.interfaces.calIEvent);
event.icalComponent = subComp;
items.push(event);
break;
case "VTODO":
var todo = Components.classes["@mozilla.org/calendar/todo;1"]
.createInstance(Components.interfaces.calITodo);
todo.icalComponent = subComp;
items.push(todo);
break;
default:
// Nothing
}
subComp = calComp.getNextSubcomponent("ANY");
}
calComp = rootComp.getNextSubcomponent('VCALENDAR');
}
aCount.value = items.length;
return items;
};
// Export
function calIcsExporter() {
this.wrappedJSObject = this;
}
calIcsExporter.prototype.QueryInterface =
function QueryInterface(aIID) {
if (!aIID.equals(Components.interfaces.nsISupports) &&
!aIID.equals(Components.interfaces.calIExporter)) {
throw Components.results.NS_ERROR_NO_INTERFACE;
}
return this;
};
calIcsExporter.prototype.getFileTypes =
function getFileTypes(aCount) {
aCount.value = 1;
var sbs = Components.classes["@mozilla.org/intl/stringbundle;1"]
.getService(Components.interfaces.nsIStringBundleService);
var props = sbs.createBundle("chrome://calendar/locale/calendar.properties");
return([{defaultExtension:'ics',
extensionFilter:'*.ics',
description: props.GetStringFromName('icsDesc')}]);
};
// not prototype.export. export is reserved.
calIcsExporter.prototype.exportToStream =
function ics_exportToStream(aStream, aCount, aItems) {
icssrv = Components.classes["@mozilla.org/calendar/ics-service;1"]
.getService(Components.interfaces.calIICSService);
var calComp = icssrv.createIcalComponent("VCALENDAR");
calComp.version = "2.0";
calComp.prodid = "-//Mozilla.org/NONSGML Mozilla Calendar V1.1//EN";
for each (item in aItems) {
calComp.addSubcomponent(item.icalComponent);
}
var str = calComp.serializeToICS();
// Convert the javascript string to an array of bytes, using the
// utf8 encoder
var convStream = Components.classes["@mozilla.org/intl/converter-output-stream;1"]
.getService(Components.interfaces.nsIConverterOutputStream);
convStream.init(aStream, 'UTF-8', 0, 0x0000);
convStream.writeString(str);
convStream.close();
return;
};