/usr/lib/thunderbird-addons/extensions/{e2fda1a4-762b-4020-b5ad-a41df1933103}/calendar-js/calIcsParser.js is in xul-ext-lightning 1:24.4.0+build1-0ubuntu1.
This file is owned by root:root, with mode 0o644.
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* 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/. */
Components.utils.import("resource://calendar/modules/calUtils.jsm");
Components.utils.import("resource://calendar/modules/calIteratorUtils.jsm");
Components.utils.import("resource://gre/modules/XPCOMUtils.jsm");
function calIcsParser() {
this.wrappedJSObject = this;
this.mItems = new Array();
this.mParentlessItems = new Array();
this.mComponents = new Array();
this.mProperties = new Array();
}
const calIcsParserClassID = Components.ID("{6fe88047-75b6-4874-80e8-5f5800f14984}");
const calIcsParserInterfaces = [Components.interfaces.calIIcsParser];
calIcsParser.prototype = {
classID: calIcsParserClassID,
QueryInterface: XPCOMUtils.generateQI(calIcsParserInterfaces),
classInfo: XPCOMUtils.generateCI({
classID: calIcsParserClassID,
contractID: "@mozilla.org/calendar/ics-parser;1",
classDescription: "Calendar ICS Parser",
interfaces: calIcsParserInterfaces,
flags: Components.interfaces.nsIClassInfo.THREADSAFE
}),
processIcalComponent: function ip_processIcalComponent(rootComp, aAsyncParsing) {
let calComp;
// libical returns the vcalendar component if there is just one vcalendar.
// If there are multiple vcalendars, it returns an xroot component, with
// vcalendar children. We need to handle both cases.
if (rootComp) {
if (rootComp.componentType == 'VCALENDAR') {
calComp = rootComp;
} else {
calComp = rootComp.getFirstSubcomponent('VCALENDAR');
}
}
if (!calComp) {
cal.ERROR("Parser Error. Could not find 'VCALENDAR' component: \n" +
rootComp + "\nStack: \n" + cal.STACK(10));
}
let self = this;
let state = new parserState(this, aAsyncParsing);
while (calComp) {
// Get unknown properties from the VCALENDAR
this.mProperties = this.mProperties.concat(
[ prop for (prop in cal.ical.propertyIterator(calComp))
if (prop.propertyName != "VERSION" &&
prop.propertyName != "PRODID") ]);
for (let subComp in cal.ical.subcomponentIterator(calComp)) {
state.submit(subComp);
}
calComp = rootComp.getNextSubcomponent("VCALENDAR");
}
state.join(function() {
let fakedParents = {};
// tag "exceptions", i.e. items with rid:
for each (let item in state.excItems) {
let parent = state.uid2parent[item.id];
if (!parent) { // a parentless one, fake a master and override it's occurrence
parent = isEvent(item) ? createEvent() : createTodo();
parent.id = item.id;
parent.setProperty("DTSTART", item.recurrenceId);
parent.setProperty("X-MOZ-FAKED-MASTER", "1"); // this tag might be useful in the future
parent.recurrenceInfo = cal.createRecurrenceInfo(parent);
fakedParents[item.id] = true;
state.uid2parent[item.id] = parent;
state.items.push(parent);
}
if (item.id in fakedParents) {
let rdate = Components.classes["@mozilla.org/calendar/recurrence-date;1"]
.createInstance(Components.interfaces.calIRecurrenceDate);
rdate.date = item.recurrenceId;
parent.recurrenceInfo.appendRecurrenceItem(rdate);
// we'll keep the parentless-API until we switch over using itip-process for import (e.g. in dnd code)
self.mParentlessItems.push(item);
}
parent.recurrenceInfo.modifyException(item, true);
}
if (Object.keys(state.tzErrors).length > 0) {
// Use an alert rather than a prompt because problems may appear in
// remote subscribed calendars the user cannot change.
if (Components.classes["@mozilla.org/alerts-service;1"]) {
let notifier = Components.classes["@mozilla.org/alerts-service;1"]
.getService(Components.interfaces.nsIAlertsService);
let title = calGetString("calendar", "TimezoneErrorsAlertTitle");
let text = calGetString("calendar", "TimezoneErrorsSeeConsole");
notifier.showAlertNotification("", title, text, false, null, null, title);
}
}
// We are done, push the items to the parser and notify the listener
self.mItems = self.mItems.concat(state.items);
self.mComponents = self.mComponents.concat(state.extraComponents);
if (aAsyncParsing) {
aAsyncParsing.onParsingComplete(Components.results.NS_OK, self);
}
});
},
parseString: function ip_parseString(aICSString, aTzProvider, aAsyncParsing) {
if (aAsyncParsing) {
let self = this;
let start = new Date();
// We are using two types of very similar listeners here:
// aAsyncParsing is a calIcsParsingListener that returns the ics
// parser containing the processed items.
// The listener passed to parseICSAsync is a calICsComponentParsingListener
// required by the ics service, that receives the parsed root component.
cal.getIcsService().parseICSAsync(aICSString, aTzProvider, {
onParsingComplete: function(rc, rootComp) {
if (Components.isSuccessCode(rc)) {
self.processIcalComponent(rootComp, aAsyncParsing);
} else {
cal.ERROR("Error Parsing ICS: " + rc);
aAsyncParsing.onParsingComplete(rc, self);
}
}
});
} else {
this.processIcalComponent(cal.getIcsService().parseICS(aICSString, aTzProvider));
}
},
parseFromStream: function ip_parseFromStream(aStream, aTzProvider, aAsyncParsing) {
// Read in the string. Note that it isn't a real string at this point,
// because likely, the file is utf8. The multibyte chars show up as multiple
// 'chars' in this string. So call it an array of octets for now.
let octetArray = [];
let binaryIS = Components.classes["@mozilla.org/binaryinputstream;1"]
.createInstance(Components.interfaces.nsIBinaryInputStream);
binaryIS.setInputStream(aStream);
octetArray = binaryIS.readByteArray(binaryIS.available());
// Some other apps (most notably, sunbird 0.2) happily splits an UTF8
// character between the octets, and adds a newline and space between them,
// for ICS folding. Unfold manually before parsing the file as utf8.This is
// UTF8 safe, because octets with the first bit 0 are always one-octet
// characters. So the space or the newline never can be part of a multi-byte
// char.
for (let i = octetArray.length - 2; i >= 0; i--) {
if (octetArray[i] == "\n" && octetArray[i+1] == " ") {
octetArray = octetArray.splice(i, 2);
}
}
// Interpret the byte-array as a UTF8-string, and convert into a
// javascript string.
let unicodeConverter = Components.classes["@mozilla.org/intl/scriptableunicodeconverter"]
.createInstance(Components.interfaces.nsIScriptableUnicodeConverter);
// ICS files are always UTF8
unicodeConverter.charset = "UTF-8";
let stringData = unicodeConverter.convertFromByteArray(octetArray, octetArray.length);
this.parseString(stringData, aTzProvider, aAsyncParsing);
},
getItems: function ip_getItems(aCount) {
aCount.value = this.mItems.length;
return this.mItems.concat([]); //clone
},
getParentlessItems: function ip_getParentlessItems(aCount) {
aCount.value = this.mParentlessItems.length;
return this.mParentlessItems.concat([]); //clone
},
getProperties: function ip_getProperties(aCount) {
aCount.value = this.mProperties.length;
return this.mProperties.concat([]); //clone
},
getComponents: function ip_getComponents(aCount) {
aCount.value = this.mComponents.length;
return this.mComponents.concat([]); //clone
}
};
/**
* The parser state, which helps process ical components without clogging up the
* event queue.
*
* @param aParser The parser that is using this state
*/
function parserState(aParser, aListener) {
this.parser = aParser;
this.listener = aListener;
this.extraComponents = [];
this.items = [];
this.uid2parent = {};
this.excItems = [];
this.tzErrors = {};
}
parserState.prototype = {
parser: null,
joinFunc: null,
threadCount: 0,
extraComponents: null,
items: null,
uid2parent: null,
excItems: null,
tzErrors: null,
listener: null,
/**
* Checks if the timezones are missing and notifies the user via error console
*
* @param item The item to check for
* @param dt The datetime object to check with
*/
checkTimezone: function checkTimezone(item, dt) {
if (dt && cal.isPhantomTimezone(dt.timezone)) {
let tzid = dt.timezone.tzid;
let hid = item.hashId + "#" + tzid;
if (!(hid in this.tzErrors)) {
// For now, publish errors to console and alert user.
// In future, maybe make them available through an interface method
// so this UI code can be removed from the parser, and caller can
// choose whether to alert, or show user the problem items and ask
// for fixes, or something else.
let msg = (calGetString("calendar", "unknownTimezoneInItem",
[tzid, item.title, cal.getDateFormatter().formatDateTime(dt)]) +
"\n" + item.icalString);
cal.ERROR(msg);
this.tzErrors[hid] = true;
}
}
},
/**
* Submit processing of a subcomponent to the event queue
*
* @param subComp The component to process
*/
submit: function submit(subComp) {
let state = this;
let runner = {
run: function run() {
let item = null;
switch (subComp.componentType) {
case "VEVENT":
item = cal.createEvent();
item.icalComponent = subComp;
state.checkTimezone(item, item.startDate);
state.checkTimezone(item, item.endDate);
break;
case "VTODO":
item = cal.createTodo();
item.icalComponent = subComp;
state.checkTimezone(item, item.entryDate);
state.checkTimezone(item, item.dueDate);
// completed is defined to be in UTC
break;
case "VTIMEZONE":
// this should already be attached to the relevant
// events in the calendar, so there's no need to
// do anything with it here.
break;
default:
state.extraComponents.push(subComp);
break;
}
if (item) {
let rid = item.recurrenceId;
if (!rid) {
state.items.push(item);
if (item.recurrenceInfo) {
state.uid2parent[item.id] = item;
}
} else {
state.excItems.push(item);
}
}
state.threadCount--;
state.checkCompletion();
}
};
this.threadCount++;
if (this.listener) {
// If we have a listener, we are doing this asynchronously. Go ahead
// and use the thread manager to dispatch the above runner
Services.tm.currentThread.dispatch(runner, Components.interfaces.nsIEventTarget.DISPATCH_NORMAL);
} else {
// No listener means synchonous. Just run the runner instead
runner.run();
}
},
/**
* Checks if the processing of all events has completed. If a join function
* has been set, this function is called.
*
* @return True, if all tasks have been completed
*/
checkCompletion: function() {
if (this.joinFunc && this.threadCount == 0) {
this.joinFunc();
return true;
}
return false;
},
/**
* Sets a join function that is called when all tasks have been completed
*
* @param joinFunc The join function to call
*/
join: function join(joinFunc) {
this.joinFunc = joinFunc;
this.checkCompletion();
}
};
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