我试图制作一个我在互联网上找到的脚本来处理我的ics文件，所以我可以将它添加到我的项目中。
如果我从ics文件中删除时区部分，该脚本可以正常工作。 但是因为该文件将从互联网上动态获取，所以我无法在旅途中对其进行编辑。 所以我不得不修改我的代码以跳过或使用该部分。
代码是（Source）：
/**
* Javascript ical Parser
* Proof of concept method of reading icalendar (.ics) files with javascript.
*
* @author: Carl Saggs
* @source: https://github.com/thybag/
* @version: 0.2
*/
function ical_parser(feed_url, callback){
//store of unproccesed data.
this.raw_data = null;
//Store of proccessed data.
this.events = [];
/**
* loadFile
* Using AJAX to load the requested .ics file, passing it to the callback when completed.
* @param url URL of .ics file
* @param callback Function to call on completion.
*/
this.loadFile = function(url, callback){
//Create request object
try {xmlhttp = window.XMLHttpRequest?new XMLHttpRequest(): new ActiveXObject("Microsoft.XMLHTTP");} catch (e) { }
//Grab file
xmlhttp.onreadystatechange = function(){
if ((xmlhttp.readyState == 4) && (xmlhttp.status == 200)) {
//On success, run callback.
callback(xmlhttp.responseText);
}
}
xmlhttp.open("GET", url, true);
xmlhttp.send(null);
}
/**
* makeDate
* Convert the dateformat used by ICalendar in to one more suitable for javascript.
* @param String ical_date
* @return dt object, includes javascript Date + day name, hour/minutes/day/month/year etc.
*/
this.makeDate = function(ical_date){
//break date apart
var dt = {
year: ical_date.substr(0,4),
month: ical_date.substr(4,2),
day: ical_date.substr(6,2),
hour: ical_date.substr(9,2),
minute: ical_date.substr(11,2)
}
//Create JS date (months start at 0 in JS - don't ask)
dt.date = new Date(dt.year, (dt.month-1), dt.day, dt.hour, dt.minute);
//Get the full name of the given day
dt.dayname =["Sunday","Monday","Tuesday","Wednesday","Thursday","Friday","Saturday"][dt.date.getDay()];
return dt;
}
/**
* parseICAL
* Convert the ICAL format in to a number of javascript objects (Each representing a date)
*
* @param data Raw ICAL data
*/
this.parseICAL = function(data){
//Ensure cal is empty
this.events = [];
//Clean string and split the file so we can handle it (line by line)
cal_array = data.replace(new RegExp( "\\r", "g" ), "").split("\n");
//Keep track of when we are activly parsing an event
var in_event = false;
//Use as a holder for the current event being proccessed.
var cur_event = null;
for(var i=0;i<cal_array.length;i++){
ln = cal_array[i];
//If we encounted a new Event, create a blank event object + set in event options.
if(!in_event && ln == 'BEGIN:VEVENT'){
in_event = true;
cur_event = {};
}
//If we encounter end event, complete the object and add it to our events array then clear it for reuse.
if(in_event && ln == 'END:VEVENT'){
in_event = false;
this.events.push(cur_event);
cur_event = null;
}
//If we are in an event
if(in_event){
//Split the item based on the first ":"
idx = ln.indexOf(':');
//Apply trimming to values to reduce risks of badly formatted ical files.
type = ln.substr(0,idx).replace(/^\s\s*/, '').replace(/\s\s*$/, '');//Trim
val = ln.substr(idx+1,ln.length-(idx+1)).replace(/^\s\s*/, '').replace(/\s\s*$/, '');
//If the type is a start date, proccess it and store details
if(type.indexOf('DTSTART') != -1 ){
dt = this.makeDate(val);
val = dt.date;
//These are helpful for display
cur_event.start_time = dt.hour+':'+dt.minute;
cur_event.start_date = dt.day+'/'+dt.month+'/'+dt.year;
cur_event.day = dt.dayname;
}
//If the type is an end date, do the same as above
if(type.indexOf('DTEND') != -1 ){
dt = this.makeDate(val);
val = dt.date;
//These are helpful for display
cur_event.end_time = dt.hour+':'+dt.minute;
cur_event.end_date = dt.day+'/'+dt.month+'/'+dt.year;
cur_event.day = dt.dayname;
}
//Convert timestamp
if(type =='DTSTAMP') val = this.makeDate(val).date;
//Add the value to our event object.
cur_event[type] = val;
//console.log(cur_event);
}
}
//Run this to finish proccessing our Events.
this.complete();
}
/**
* complete
* Sort all events in to a sensible order and run the original callback
*/
this.complete = function(){
//Sort the data so its in date order.
this.events.sort(function(a,b){
return a.DTSTART-b.DTSTART;
});
//Run callback method, if was defined. (return self)
if(typeof callback == 'function') callback(this);
}
/**
* getEvents
* return all events found in the ical file.
*
* @return list of events objects
*/
this.getEvents = function(){
return this.events;
}
/**
* getFutureEvents
* return all events sheduled to take place after the current date.
*
* @return list of events objects
*/
this.getFutureEvents = function(){
var future_events = [], current_date = new Date();
this.events.forEach(function(itm){
//If the event starts after the current time, add it to the array to return.
if(itm.DTSTART > current_date) future_events.push(itm);
console.log(itm);
});
return future_events;
}
/**
* load
* load a new ICAL file.
*
* @param ical file url
*/
this.load = function(ical_file){
var tmp_this = this;
this.raw_data = null;
this.loadFile(ical_file, function(data){
//if the file loads, store the data and invoke the parser
tmp_this.raw_data = data;
tmp_this.parseICAL(data);
});
}
//Store this so we can use it in the callback from the load function.
var tmp_this = this;
//Store the feed url
this.feed_url = feed_url;
//Load the file
this.load(this.feed_url);
}
我认为问题始于getFutureEvents，它将当前日期与文件上的日期进行比较。
我的文件如下：
BEGIN:VEVENT
DTSTAMP:20170217T034951Z
DTSTART;TZID=Europe/London:20170330T090000
DTEND;TZID=Europe/London:20170330T100000
SUMMARY:Blah Blah Blah
LOCATION:Blah 0.20
DESCRIPTION:Week Number: 9\nBuilding: Blah\nRoom: 0.30\nUnit Ref: U
87454/n
Lecturer: Blah\,Blah
LAST-MODIFIED:20170217T034950Z
END:VEVENT
示例ics文件如下所示：
BEGIN:VEVENT
UID:uid_1@test.com
DTSTAMP:20120120T130000Z
ORGANIZER;CN=Test:MAILTO:test@test.com
DTSTART:20120507T130000Z
DTEND:20120507T140000Z
SUMMARY:Intro to Witchcraft and wizardry
DESCRIPTION:A Description of this Event here
END:VEVENT
答案 0 :(得分：1)
我已经编辑了parseICAL方法，它现在似乎足以满足您的需求（但仍然不完美）。有我的改变：
this.parseICAL = function(data){
/* ... */
for(var i=0;i<cal_array.length;i++){
ln = cal_array[i];
ln = ln.trim(); // <-- here I'm trimming every line, because I noticed
// that spaces was causing some problems
/* ... */
if(in_event){
idx = ln.indexOf(':');
type = ln.substr(0,idx).replace(/^\s\s*/, '').replace(/\s\s*$/, '');
val = ln.substr(idx+1,ln.length-(idx+1)).replace(/^\s\s*/, '').replace(/\s\s*$/, '');
type = type.split(';')[0]; // <-- and here I am removing everything
// after semicolon in types
/* ... */
}
}
this.complete();
}
我希望它现在能够正常工作，它对我有用。