Il 17/11/2011 14:54, Daniel Espinosa ha scritto:
> 2011/11/16 Giulio Paci <[email protected]>:
>> Hi to all,
>> I am trying to (re)write Vala bindings for libcurl.
>>
>> I started following the instruction in this page
>> http://live.gnome.org/Vala/Bindings
>> and using information from this page
>> http://live.gnome.org/Vala/Manual/GIDL%20metadata%20format
>>
>
> Add to your list of useful information:
>
> [1] https://live.gnome.org/Vala/Manual/Attributes
>
> There are lot of annotations you must add to your code in order to do
> what you want to.
>
>> At last I got a libcurl.gi that was close to what I expected and I tried
>> to write a metadata file to get an usable vapi file. Unfortunately I
>> have some problems completing the task.
>>
>> I have attached an example containing some of the problem I am currently
>> facing. The libcurl.vapi.target is the desired vapi file, while the
>> libcurl.vapi is obtained from libcurl.gi and libcurl.metadata using
>> vapigen (0.14).
>>
>
> Are there GLib bindings of libcurl?
>
> This is because Vala is moving to GIR and is easy to make glibcurl
> could generate GObject-Introspection information, using annotations
> inside the GLib/C code, then generate the Vala bindigs: Advantage: you
> will help lot others languages (not just Vala) to use libcurl like
> Python, JavaScript and other with support of GObject Introspection.
Thank you for the suggestion. I will try writing bindings for glibcurl
as soon as I have time, and after I have libcurl bindings working fine.
The problem I can see with glibcurl is that it is not released as a
library but as code that you have to include in your project.
>> The main issues are:
>> 1) How can I specify that a method (curl_easy_init) is the constructor
>> of a class (EasyHandle)?
>> 2) How can I instruct vapigen that a function is a method of a class and
>> not a static function?
>> 3) How can I instruct vapigen to put a cname attibute where needed (e.g.
>> for the EasyHandle class or the Code enumeration)?
>> 4) How can I handle an enumeration value with a different prefix from
>> all the other values (e.g.: the last value in the Code enumeration)?
>> 5) Is there any way I can put a static function in a nested namespace
>> (e.g.: Curl.Global.init())?
>>
>
> Most of this questions can be solved by see at Attributes is [1]
> above. I'm not realy sure how to add that annotations using metadata,
> but you can add custom code instead.
The Attributes page was already one of my sources. Unfortunately most of
the annotations have a meaning only inside vala/vapi files and not in
the metadata file. If there is no better way, I think I am going to fix
the vapi file by hand.
Bests,
Giulio.
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