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/* this file is part of evince, a gnome document viewer
*
* Copyright (C) 2007 Carlos Garcia Campos <carlosgc@gnome.org>
*
* Evince is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* Evince is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#include <config.h>
#include "ev-backend-info.h"
#define EV_BACKENDS_GROUP "Evince Backend"
#define EV_BACKENDS_EXTENSION ".evince-backend"
/*
* _ev_backend_info_free:
* @info:
*
* Increases refcount of @info by 1.
*/
EvBackendInfo *
_ev_backend_info_ref (EvBackendInfo *info)
{
g_return_val_if_fail (info != NULL, NULL);
g_return_val_if_fail (info->ref_count >= 1, NULL);
g_atomic_int_inc (&info->ref_count);
return info;
}
/*
* _ev_backend_info_free:
* @info:
*
* Decreases refcount of @info by 1, and frees @info if the refcount reaches 0.
*/
void
_ev_backend_info_unref (EvBackendInfo *info)
{
if (info == NULL)
return;
g_return_if_fail (info->ref_count >= 1);
if (!g_atomic_int_dec_and_test (&info->ref_count))
return;
g_free (info->module_name);
g_free (info->type_desc);
g_strfreev (info->mime_types);
g_slice_free (EvBackendInfo, info);
}
/**
* _ev_backend_info_new_from_file:
* @path: path to the backends file
* @error: a location to store a #GError, or %NULL
*
* Loads backend information from @path.
*
* Returns: a new #EvBackendInfo, or %NULL on error with @error filled in
*/
static EvBackendInfo *
_ev_backend_info_new_from_file (const char *file,
GError **error)
{
EvBackendInfo *info = NULL;
GKeyFile *backend_file = NULL;
backend_file = g_key_file_new ();
if (!g_key_file_load_from_file (backend_file, file, G_KEY_FILE_NONE, error))
goto err;
info = g_slice_new0 (EvBackendInfo);
info->ref_count = 1;
info->module_name = g_key_file_get_string (backend_file, EV_BACKENDS_GROUP,
"Module", error);
if (!info->module_name)
goto err;
info->resident = g_key_file_get_boolean (backend_file, EV_BACKENDS_GROUP,
"Resident", NULL);
info->type_desc = g_key_file_get_locale_string (backend_file, EV_BACKENDS_GROUP,
"TypeDescription", NULL, error);
if (!info->type_desc)
goto err;
info->mime_types = g_key_file_get_string_list (backend_file, EV_BACKENDS_GROUP,
"MimeType", NULL, error);
if (!info->mime_types)
goto err;
g_key_file_free (backend_file);
return info;
err:
g_key_file_free (backend_file);
_ev_backend_info_unref (info);
return NULL;
}
/*
* _ev_backend_info_load_from_dir:
* @path: a directory name
*
* Load all backend infos from @path.
*
* Returns: a newly allocated #GList containing newly allocated
* #EvBackendInfo objects
*/
GList
*_ev_backend_info_load_from_dir (const char *path)
{
GList *list = NULL;
GDir *dir;
const gchar *dirent;
GError *error = NULL;
dir = g_dir_open (path, 0, &error);
if (!dir) {
g_warning ("%s", error->message);
g_error_free (error);
return FALSE;
}
while ((dirent = g_dir_read_name (dir))) {
EvBackendInfo *info;
gchar *file;
if (!g_str_has_suffix (dirent, EV_BACKENDS_EXTENSION))
continue;
file = g_build_filename (path, dirent, NULL);
info = _ev_backend_info_new_from_file (file, &error);
if (error != NULL) {
g_warning ("Failed to load backend info from '%s': %s\n",
file, error->message);
g_clear_error (&error);
}
g_free (file);
if (info == NULL)
continue;
list = g_list_prepend (list, info);
}
g_dir_close (dir);
return list;
}
|
