Problem with accessing mime info using gnome-vfs API.

["725eb0c8ef771c09ee" <zjc99 mails tsinghua edu cn>]

Hi everyone:

I've seen in the doc of gnome-vfs, the mime info is stored in a database
consisting
gnome-vfs.mime, gnome-vfs.keys, and some .applications files. The API of
gnome-vfs
is said to access this the database.  I have two questions here, please help.

Question# 1.
I've untared and built package gnome-vfs-2.0.4.tar.gz, and installed it at
./gnome-vfs-2.0.4
When I run: ./gnome-vfs-2.0.4/test/test-mime-info "test/html"
the result is as follows:

Type: test/html
Description: (null)
Default Action
(none)
Default Application
(none)
Default Component
(none)
Short List Applications
(none)
Short List Components
(none)
All Applications
(none)
All Components
(none)

But at /usr/share/mime-info/gnome-vfs.mime, there is the following item:
text/html
        ext: html htm HTML

and at /usr/share/mime-info/gnome-vfs.keys, there is the following item:
ext/html
        description=HTML page
        [az]description=HTMl səhifəsi
        .......
        [zh_TW]description=HTML ™n
        default_action_type=application
        default_application_id=htmlview
        short_list_component_iids=......
        short_list_component_iids_for_novice_user_level=......
        short_list_component_iids_for_intermediate_user_level=......
        short_list_component_iids_for_advanced_user_level=......
       
short_list_application_ids_for_novice_user_level=htmlview,mozilla,netscape,galeon
       
short_list_application_ids_for_intermediate_user_level=htmlview,mozilla,netscape,g
aleon
       
short_list_application_ids_for_advanced_user_level=htmlview,mozilla,netscape,lynx,
galeon
        category=Documents/World Wide Web
        use_category_default=yes

So the result of ./gnome-vfs-2.0.4/test/test-mime-info "test/html" shouldn't be
like that.
Could anybody help to tell me the problem.

Question# 2.
With ./gnome-vfs-2.0.4/test/test-mime-info.c, there are following lines:
     39         gnome_vfs_init ();
     40
>     41         /* test reading of gnome-vfs.keys file */
     42         value = gnome_vfs_mime_get_value ("x-directory/normal",
"description");
     43         if (value == NULL || strcmp (value, "folder") != 0) {

>     89         /* test reading of gnome-vfs.mime file */
     90         {
      ......
     95                 list = gnome_vfs_mime_get_extensions_list
("application/postscript");

>    121         /* test writing the users' user.keys file. It should overide the
system default */
    122         {
    123                 const char *value;
    124                 gnome_vfs_mime_set_value ("application/postscript",
    125                                               "foo",
    126                                               "bar");

>    171         /* test to try to modify the user.mime file */
    172         {
    173                 char *value, *save;
    174
    175                 save = gnome_vfs_mime_get_extensions_string
("application/postscript");
    176                 gnome_vfs_mime_set_registered_type_key
("application/postscript", "ext", "foo");

Then how it can tell when to access gnome-vfs.keys, but not user.keys, or vice
verse ?
Since the APIs are the same, and there is no flag to indicate this.

Please help.
Thanks.
-GeorgeZ.