Re: [LGI] generic question about access to methods

[Pavel Holejsovsky <pavel.holejsovsky@...>]

Hi Laurent,

On 11/21/12 6:04 PM, Laurent FAILLIE wrote:
> But I'm lost with methods calls :I'm trying to use GLib's KeyFile to
> store / retrieve the configuration and I found
> load_from_file methods and its C definition
> :http://developer.gnome.org/glib/2.32/glib-Key-value-file-parser.html#g-key-file-load-from-file
>
> But I didn't find the way to convert this C interface to Lua/Lgi one.
>
> My code is the following :
>
> cfg_filename = GLib.get_user_config_dir() .. "/IMAPNotifyMe.conf"
> local config = GLib.KeyFile
> config:load_from_file( cfg_filename )

Two problems here:

1) You are assigning GLib.KeyFile type to 'config' variable, instead of 
creating GLib.KeyFile instance.  Use local config = GLib.KeyFile() instead.

2) It will still not work, it will crash instead.  GKeyFile is an 
ancient API, and it is not introspection-friendly, because it is neither 
GObject-based object nor GBoxed struct - this means that introspection 
clients do not know how to handle lifetime of this object.

It is possible (and now already quite easy) to implement workaround in 
LGI for this. From fast skimming KeyFile API, I can see that there will 
be other problems (some methods with array arguments seem to be missing 
annotations).  I'll try to get to it in a few days and will let you know 
if something usable came out of this attempt.

Sorry for not so good news,
Pavel