This is a small script that uses the Ruby iCalendar gem to split a large ical file into smaller chunks.
I wrote this because Google Calendar doesn't like it when you try to import a large calendar file. The limit seems to be around 1 MB, but I've seen issues with files smaller than 1 MB as well.
Note: if you export your Google Calendar, it may give you a zip file with a pile of ics files in it. You'll need to unzip that file before selecting the file(s) you wish to import.
./split-calendar.sh bigcalendar.ics
The shell script does a bundle check and bundle install if the iCalendar gem
isn't present. Then it invokes ical-splitter.rb on the file. It will then
write a series of files like bigcalendar-1.ics, bigcalendar-2.ics, etc which
should be less than or equal to 512 KB in size. When the program completes, you
can import each of the files in succession to Google Calendar.
To change the limit, edit split-calendar.rb and adjust the LIMIT_SIZE
constant. It's important that LIMIT_SIZE be large enough to hold at least one
event.
- Occasionally, Google Calendar rejects an event with the error "insufficient permissions on the target calendar." As far as I can tell, that's a bug in Google Calendar.
Open an issue and/or Fork, PR.