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/*
* caja-extension.c - extension management functions
*
* Copyright (C) 2012-2021 The MATE developers
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library 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
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301, USA.
*
* Author: Alexander van der Meij <alexandervdm@gliese.me>
*/
#include "caja-extensions.h"
#include "caja-global-preferences.h"
#include "caja-module.h"
#include "caja-debug-log.h"
#include <string.h>
#define CAJA_EXTENSION_GROUP "Caja Extension"
static GList *caja_extensions = NULL;
static Extension *
extension_new (gchar *filename, gboolean state, gboolean python, GObject *module)
{
GError *error = NULL;
Extension *ext;
GKeyFile *extension_file;
gchar *extension_filename;
ext = g_new0 (Extension, 1);
ext->filename = filename;
ext->name = NULL;
ext->description = NULL;
ext->author = NULL;
ext->copyright = NULL;
ext->version = NULL;
ext->website = NULL;
ext->state = state;
ext->module = module;
extension_file = g_key_file_new ();
extension_filename = g_strdup_printf(CAJA_DATADIR "/extensions/%s.caja-extension", filename);
if (g_key_file_load_from_file (extension_file, extension_filename, G_KEY_FILE_NONE, &error))
{
ext->name = g_key_file_get_locale_string (extension_file, CAJA_EXTENSION_GROUP, "Name", NULL, NULL);
ext->description = g_key_file_get_locale_string (extension_file, CAJA_EXTENSION_GROUP, "Description", NULL, NULL);
ext->icon = g_key_file_get_string (extension_file, CAJA_EXTENSION_GROUP, "Icon", NULL);
ext->author = g_key_file_get_string_list (extension_file, CAJA_EXTENSION_GROUP, "Author", NULL, NULL);
ext->copyright = g_key_file_get_locale_string (extension_file, CAJA_EXTENSION_GROUP, "Copyright", NULL, NULL);
ext->version = g_key_file_get_string (extension_file, CAJA_EXTENSION_GROUP, "Version", NULL);
ext->website = g_key_file_get_string (extension_file, CAJA_EXTENSION_GROUP, "Website", NULL);
g_key_file_free (extension_file);
}
else
{
caja_debug_log (FALSE, CAJA_DEBUG_LOG_DOMAIN_USER, "Error loading keys from file \"%s\": %s\n", extension_filename, error->message);
g_error_free (error);
}
g_free (extension_filename);
if (python)
{
ext->name = g_strconcat("Python: ", filename, NULL);
ext->description = "Python-caja extension";
}
return ext;
}
/* functions related to persistent configuration through gsettings: */
static gboolean
gsettings_key_has_value (const gchar *value)
{
gchar **list;
gint i;
list = g_settings_get_strv (caja_extension_preferences,
CAJA_PREFERENCES_DISABLED_EXTENSIONS);
if (list != NULL)
{
for (i = 0; list[i]; i++)
{
if (g_ascii_strcasecmp (value, list[i]) == 0)
{
g_strfreev (list);
return TRUE;
}
}
}
g_strfreev (list);
return FALSE;
}
static gboolean
gsettings_append_to_list (const char *value)
{
gchar **current;
gchar **new;
gint size;
gboolean retval;
current = g_settings_get_strv (caja_extension_preferences,
CAJA_PREFERENCES_DISABLED_EXTENSIONS);
for (size = 0; current[size] != NULL; size++);
size += 1;
size += 1;
new = g_realloc_n (current, size, sizeof (gchar *));
new[size - 2] = g_strdup (value);
new[size - 1] = NULL;
retval = g_settings_set_strv (caja_extension_preferences,
CAJA_PREFERENCES_DISABLED_EXTENSIONS,
(const gchar **) new);
g_strfreev (new);
return retval;
}
static gboolean
gsettings_remove_from_list (const char *value)
{
gchar **current;
GArray *array;
gint i;
gboolean retval;
current = g_settings_get_strv (caja_extension_preferences,
CAJA_PREFERENCES_DISABLED_EXTENSIONS);
array = g_array_new (TRUE, TRUE, sizeof (gchar *));
for (i = 0; current[i] != NULL; i++)
{
if (g_strcmp0 (current[i], value) != 0)
array = g_array_append_val (array, current[i]);
}
retval = g_settings_set_strv (caja_extension_preferences,
CAJA_PREFERENCES_DISABLED_EXTENSIONS,
(const gchar **) array->data);
g_strfreev (current);
g_array_free (array, TRUE);
return retval;
}
/* functions related to the extension management */
static gboolean
caja_extension_get_state (const gchar *extname)
{
return !gsettings_key_has_value (extname);
}
GList *
caja_extensions_get_for_type (GType type)
{
GList *l;
GList *ret = NULL;
for (l = caja_extensions; l != NULL; l = l->next)
{
Extension *ext = l->data;
ext->state = caja_extension_get_state (ext->filename);
if (ext->state) // only load enabled extensions
{
if (G_TYPE_CHECK_INSTANCE_TYPE (G_OBJECT (ext->module), type))
{
g_object_ref (ext->module);
ret = g_list_prepend (ret, ext->module);
}
}
}
return ret;
}
GList *
caja_extensions_get_list (void)
{
return caja_extensions;
}
void
caja_extension_register (gchar *filename, GObject *module)
{
gboolean ext_state = TRUE; // new extensions are enabled by default.
gboolean ext_python = FALSE;
gchar *ext_filename;
ext_filename = g_strndup (filename, strlen(filename) - 3);
ext_state = caja_extension_get_state (ext_filename);
if (g_str_has_suffix (filename, ".py")) {
ext_python = TRUE;
}
Extension *ext = extension_new (ext_filename, ext_state, ext_python, module);
caja_extensions = g_list_append (caja_extensions, ext);
}
gboolean
caja_extension_set_state (Extension *ext, gboolean new_state)
{
if (ext)
{
g_return_val_if_fail (ext->state != new_state, FALSE);
ext->state = new_state;
}
gboolean retval;
if (new_state) {
retval = gsettings_remove_from_list (ext->filename);
}
else {
retval = gsettings_append_to_list (ext->filename);
}
g_return_val_if_fail (retval == TRUE, FALSE);
return TRUE;
}
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