[Evolution-hackers] error in generated vcalendar + error reading changed tasks/events

[Armin Bauer]

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JP Rosevear wrote:
> On Tue, 2005-03-08 at 07:10 +0100, Armin Bauer wrote:
>
>>Hi,
>>
>>i discovered two bugs:
>>
>>The first one is in the way evo2 generates vcalendars:
>>
>>Categories get generated as:
>>CATEGORIES:Birthday\,Business
>>
>>but it should be (taken from http://www.ietf.org/rfc/rfc2445.txt):
>>CATEGORIES:MEETING,PROJECT
>
>
> It appears the rfc is contradicting itself in the examples, see 4.3.11.
> That shows the "text" grammar type to need escaping of commas and
> CATEGORIES is of this type, as well:
>
>    The "TEXT" property values may also contain special characters that
>    are used to signify delimiters, such as a COMMA character for lists
>    of values or a SEMICOLON character for structured values. In order to
>    support the inclusion of these special characters in "TEXT" property
>    values, they MUST be escaped with a BACKSLASH character. A BACKSLASH
>    character (US-ASCII decimal 92) in a "TEXT" property value MUST be
>    escaped with another BACKSLASH character. A COMMA character in a
>    "TEXT" property value MUST be escaped with a BACKSLASH character
>    (US-ASCII decimal 92). A SEMICOLON character in a "TEXT" property
>    value MUST be escaped with a BACKSLASH character (US-ASCII decimal
>    92).  However, a COLON character in a "TEXT" property value SHALL NOT
>    be escaped with a BACKSLASH character.Example: A multiple line value
>    of:
>

actually its not:

    Type name: CATEGORIES

    Type purpose: To specify application category information about the
    vCard.

    Type encoding: 8bit

    Type value: One or more text values separated by a COMMA character
    (ASCII decimal 44).

    Type example:

         CATEGORIES:TRAVEL AGENT

         CATEGORIES:INTERNET,IETF,INDUSTRY,INFORMATION TECHNOLOGY

so this would be valid: sometext\,,somemoretext

i know that the standard is just plain stupid at this point since the
categories is the only occasion they are using a comma

and besides... even the evolution2 vcard parser is expecting the
categories with an unescaped comma :)

>
>
>>The second one is that when i add several tasks/events, request them via
>>e_cal_get_changes, delete all of them and request again using
>>e_cal_get_changes the returned GList will contain more items than delete
>>d and the additional items look like random memory locations. I attached
>>the code that produces this result. I took a look at the bug database
>>and there are quite some bugs which reporting crashing etc when deleting
>>tasks/events, so maybe this is related.
>
>
> Probably unrelated, but it might help against some pilot bugs.  What is
> the exactly version you are coding against?

ii  evolution      2.0.4-0.1      The groupware suite
ii  evolution-data 1.0.4-0.1      evolution database backend server

entry 20050308T203113Z-6966-1000-6736-0@azrael
entry 20050308T203113Z-6966-1000-6736-1@azrael
entry 20050308T203002Z-6781-1000-1-1@azrael
entry 20050308T203113Z-6966-1000-6736-2@azrael
entry 20050308T203002Z-6781-1000-1-2@azrael
entry 20050307T183359Z-32171-1000-1-42@azrael

Note that i deleted 3 tasks (the ones with *1000-1*)

>
> -JP

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