/*
* e-mail-extension-registry.c
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) version 3.
*
* This program 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with the program; if not, see <http://www.gnu.org/licenses/>
*
*/
#include <glib-object.h>
#include "e-mail-extension-registry.h"
#include "e-mail-extension.h"
#include "e-mail-format-extensions.h"
#include <libebackend/libebackend.h>
#include <camel/camel.h>
#include <glib-object.h>
#include <string.h>
#define E_MAIL_EXTENSION_REGISTRY_GET_PRIVATE(obj) \
(G_TYPE_INSTANCE_GET_PRIVATE \
((obj), E_TYPE_MAIL_EXTENSION_REGISTRY, EMailExtensionRegistryPrivate))
struct _EMailExtensionRegistryPrivate {
GHashTable *table;
};
static gconstpointer parent_class = 0;
G_DEFINE_ABSTRACT_TYPE (
EMailExtensionRegistry,
e_mail_extension_registry,
G_TYPE_OBJECT)
/**
* EMailExtensionRegistry:
*
* The #EMailExtensionRegistry is an abstract class representing a registry
* for #EMailExtension<!-//>s.
*
* #EMailParser and #EMailFormatter both have internally a registry object
* based on the #EMailExtensionRegistry.
*
* One extension can registry itself for more mime-types.
*/
static void
mail_extension_registry_finalize (GObject *object)
{
EMailExtensionRegistry *reg = E_MAIL_EXTENSION_REGISTRY (object);
if (reg->priv->table) {
g_hash_table_destroy (reg->priv->table);
reg->priv->table = NULL;
}
/* Chain up to parent's finalize() */
G_OBJECT_CLASS (parent_class)->finalize (object);
}
void
e_mail_extension_registry_class_init (EMailExtensionRegistryClass *klass)
{
GObjectClass *object_class;
g_type_class_add_private (klass, sizeof (EMailExtensionRegistryPrivate));
object_class = G_OBJECT_CLASS (klass);
object_class->finalize = mail_extension_registry_finalize;
}
static void
destroy_queue (GQueue *queue)
{
g_queue_free_full (queue, g_object_unref);
}
void
e_mail_extension_registry_init (EMailExtensionRegistry *reg)
{
reg->priv = E_MAIL_EXTENSION_REGISTRY_GET_PRIVATE (reg);
reg->priv->table = g_hash_table_new_full (
g_str_hash, g_str_equal, NULL, (GDestroyNotify) destroy_queue);
}
/**
* e_mail_extension_registry_add_extension:
* @reg: An #EMailExtensionRegistry
* @extension: An #EMailExtension
*
* Registrys the @extension as a handler for all mime-types that it is able
* to handle.
*/
void
e_mail_extension_registry_add_extension (EMailExtensionRegistry *reg,
EMailExtension *extension)
{
gint i;
const gchar **types;
g_return_if_fail (E_IS_MAIL_EXTENSION_REGISTRY (reg));
g_return_if_fail (E_IS_MAIL_EXTENSION (extension));
/* One reference per extension is enough */
g_object_ref (extension);
types = e_mail_extension_get_mime_types (extension);
for (i = 0; types && types[i]; i++) {
GQueue *queue;
queue = g_hash_table_lookup (reg->priv->table, types[i]);
if (!queue) {
queue = g_queue_new ();
g_queue_push_head (queue, extension);
g_hash_table_insert (reg->priv->table, (gchar *) types[i], queue);
} else {
g_queue_push_head (queue, extension);
}
if (camel_debug ("emformat:registry")) {
printf("Added extension '%s' for type '%s'\n",
G_OBJECT_TYPE_NAME (extension), types[i]);
}
}
}
/**
* e_mail_extension_registry_remove_extension:
* @reg: An #EMailExtensionRegistry
* @extension: An #EMailExtension
*
* Removes @extension from the registry.
*/
void
e_mail_extension_registry_remove_extension (EMailExtensionRegistry *reg,
EMailExtension *extension)
{
gint i;
const gchar **types;
g_return_if_fail (E_IS_MAIL_EXTENSION_REGISTRY (reg));
g_return_if_fail (E_IS_MAIL_EXTENSION (extension));
types = e_mail_extension_get_mime_types (extension);
for (i = 0; types && types[i]; i++) {
GQueue *queue;
queue = g_hash_table_lookup (reg->priv->table, types[i]);
if (!queue) {
i++;
continue;
}
g_queue_remove (queue, extension);
if (camel_debug ("emformat:registry")) {
printf("Removed extension '%s' from type '%s'\n",
G_OBJECT_TYPE_NAME (extension), types[i]);
}
}
g_object_unref (extension);
}
/**
* e_mail_extension_registry_get_for_mime_type:
* @reg: An #EMailExtensionRegistry
* @mime_type: A string with mime-type to look up
*
* Tries to lookup list of #EMailExtension<!-//>s that has registryed themselves
* as handlers for the @mime_type.
*
* Return value: Returns #GQueue of #EMailExtension<!-//>s or %NULL when there
* are no extension registryed for given @mime_type.
*/
GQueue *
e_mail_extension_registry_get_for_mime_type (EMailExtensionRegistry *reg,
const gchar *mime_type)
{
g_return_val_if_fail (E_IS_MAIL_EXTENSION_REGISTRY (reg), NULL);
g_return_val_if_fail (mime_type && *mime_type, NULL);
return g_hash_table_lookup (reg->priv->table, mime_type);
}
/**
* e_mail_extension_registry_get_fallback:
* @reg: An #EMailExtensionRegistry
* @mime_type: A string with mime-type whose fallback to look up
*
* Tries to lookup fallback parsers for given mime type. For instance, for
* multipart/alternative, it will try to lookup multipart/ * parser.
*
* Return Value: Returns #QGueue of #EMailExtension<!-//>>s or %NULL when there
* are no extensions registryed for the fallback type.
*/
GQueue *
e_mail_extension_registry_get_fallback (EMailExtensionRegistry *reg,
const gchar *mime_type)
{
gchar *s, *type;
gsize len;
GQueue *parsers;
g_return_val_if_fail (E_IS_MAIL_EXTENSION_REGISTRY (reg), NULL);
g_return_val_if_fail (mime_type && *mime_type, NULL);
s = strchr (mime_type, '/');
len = s - mime_type;
s = g_alloca (len);
strncpy (s, mime_type, len);
type = g_ascii_strdown (s, len);
s = g_strdup_printf ("%s/*", type);
parsers = g_hash_table_lookup (reg->priv->table, s);
g_free (type);
g_free (s);
return parsers;
}
/******************************************************************************/
static void e_mail_parser_extension_registry_extensible_interface_init (EExtensibleInterface *iface);
G_DEFINE_TYPE_WITH_CODE (
EMailParserExtensionRegistry,
e_mail_parser_extension_registry,
E_TYPE_MAIL_EXTENSION_REGISTRY,
G_IMPLEMENT_INTERFACE (
E_TYPE_EXTENSIBLE,
e_mail_parser_extension_registry_extensible_interface_init));
static void
e_mail_parser_extension_registry_init (EMailParserExtensionRegistry *parser_ereg)
{
}
static void
e_mail_parser_extension_registry_class_init (EMailParserExtensionRegistryClass *klass)
{
e_mail_parser_extension_registry_parent_class = g_type_class_peek_parent (klass);
}
static void
e_mail_parser_extension_registry_extensible_interface_init (EExtensibleInterface *interface)
{
}
/******************************************************************************/
static void e_mail_formatter_extension_registry_extensible_interface_init (EExtensibleInterface *iface);
G_DEFINE_TYPE_WITH_CODE (
EMailFormatterExtensionRegistry,
e_mail_formatter_extension_registry,
E_TYPE_MAIL_EXTENSION_REGISTRY,
G_IMPLEMENT_INTERFACE (
E_TYPE_EXTENSIBLE,
e_mail_formatter_extension_registry_extensible_interface_init));
static void
e_mail_formatter_extension_registry_init (EMailFormatterExtensionRegistry *formatter_ereg)
{
}
static void
e_mail_formatter_extension_registry_class_init (EMailFormatterExtensionRegistryClass *klass)
{
e_mail_formatter_extension_registry_parent_class = g_type_class_peek_parent (klass);
}
static void
e_mail_formatter_extension_registry_extensible_interface_init (EExtensibleInterface *interface)
{
}
