New Version

Announcing ri_cal version 0.8.8
a new implementation of RFC2445 in Ruby

A new Ruby implementation of RFC2445 iCalendar.

The existing Ruby iCalendar libraries (e.g. icalendar, vpim) provide
for parsing and generating icalendar files,
but do not support important things like enumerating occurrences of
repeating events.

This is a clean-slate implementation of RFC2445.

A Google group for discussion of this library has been set up


=== v0.8.8 2011-02-13
Regenerate gemspec for version 0.8.8
Version bump to 0.8.8
fix x property access
change rakefile to use ad_agency
=== v0.8.7 2010-04-16
Regenerated gemspec for version 0.8.7
update history
Version bump to 0.8.7
fix tickets #29-supress x-rical-tzsource when not relevant
=== v0.8.6 2010-04-15
Regenerated gemspec for version 0.8.6
update history prior to release
Version bump to 0.8.6
fix tzinfo timezone export
force change managment datetimes to zulu time
added ZuluDateTime property for use by change management properties
parked a spec
Convert to jeweler
Version bump to 0.8.5
remove unneeeded Date#to_time and DateTime#to_time methods
remove inf loop spec temporarily
Working on a bug where a recurrence rule with simple by-parts
caused an infinite loop See spec/ri_cal/inf_loop_spec

 Although the reported bug is fixed there is still work to do

because giving an event a dtstart
not within the recurrence rule produces incorrect output.

 1) 'an event with unneeded by parts with a dtstart outside the

recurrence rule should enumerate 10 events first July 12, 1940, July
13, 1940, July 13, 1941 when count is 3’ FAILED
expected: [“1940-07-12”, “1940-07-13”, “1941-07-13”],
got: [“1940-07-12”, “1940-07-13”, “1941-07-12”] (using ==)

  I'm going to push this to github, but not release a new gem

version until I can fix this latter bug.

fixed infinite loop bug for reported case
website and gemspec
Fixed Ticket #26, failing with date values for event dtstart and
updated website
=== v0.8.4 2009-09-18
fixed gemspec problem
=== v0.8.3 2009-09-18
prepared to publish
refactored occurrence incrementers
changed ri_cal.rb to autoload
changed ri_cal.rb to autoload
=== v0.8.2 2009-09-05
another attempt to trigger github to rebuild
fixed gem version so github should now build
initialization_methodsrb-syntax Fixes
fixed ticket #23
adopted patch from ebigart
Support properties with no value (e.g. ‘LOCATION;LANGUAGE=en-US:’
gets generated using Outlook)
=== v0.8.1 2009-08-18
=== v0.8.0 2009-08-11
Minor Version Bump - There is a small potentially breaking change
see section on treatment of X-properties below * Unknown Components

 Starting with version 0.8.0 RiCal will parse calendars and

components which contain nonstandard components.

 For example, there was a short-lived proposal to extend RFC2445

with a new VVENUE component which would hold structured information
about the location of an event. This proposal was never accepted and
was withdrawn, but there is icalendar data in the wild which contains
VVENUE components.

 Prior to version 0.8.0, RiCal would raise an exception if unknown

component types were encountered. Starting with version 0.8.0 RiCal
will ‘parse’ such components and create instances of NonStandard
component to represent them. Since the actual format of unknown
components is not known by RiCal, the NonStandard component will
simply save the data lines between the BEGIN:xxx and END:xxx lines,
(where xxx is the non-standard component name, e.g. VVENUE). If the
calendar is re-exported the original lines will be replayed.

 * Change to treatment of X-properties

 RFC2445 allows 'non-standard' or experimental properties which

property-names beginning with X. RiCal always supported parsing

 The standard properties are specified as to how many times they

can occur within a particular component. For singly occurring
properties RiCal returns a single property object, while for
properties which can occur multiple times RiCal returns an array of
property objects.

 While implementing NonStandard properties, I realized that

X-properties were being assumed to be singly occurring. But this isn’t
necessarily true. So starting with 0.8.0 the X-properties are
represented by an array of property objects.

 THIS MAY BREAK SOME APPLICATIONS, but the adaptation should be 


  • No changes other than a version number bump. github seems to
    have failed to notice the commit of v0.7.6
    and didn’t build the gem. Hopefully it will notice this one.

Rick DeNatale

Twitter: @RickDeNatale

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