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-rw-r--r--camel/camel-store.c376
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-/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
-/* camel-store.c : Abstract class for an email store */
-
-/*
- *
- * Authors:
- * Bertrand Guiheneuf <bertrand@helixcode.com>
- * Dan Winship <danw@helixcode.com>
- *
- * Copyright 1999, 2000 Helix Code, Inc. (http://www.helixcode.com)
- *
- * This program 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.
- *
- * 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 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307
- * USA
- */
-#include <config.h>
-#include "camel-store.h"
-#include "camel-folder.h"
-#include "camel-exception.h"
-
-static CamelServiceClass *parent_class = NULL;
-
-/* Returns the class for a CamelStore */
-#define CS_CLASS(so) CAMEL_STORE_CLASS (CAMEL_OBJECT_GET_CLASS(so))
-
-static CamelFolder *get_folder (CamelStore *store, const char *folder_name,
- gboolean create, CamelException *ex);
-static void delete_folder (CamelStore *store, const char *folder_name,
- CamelException *ex);
-static void rename_folder (CamelStore *store, const char *old_name,
- const char *new_name, CamelException *ex);
-
-static char *get_folder_name (CamelStore *store, const char *folder_name,
- CamelException *ex);
-static char *get_root_folder_name (CamelStore *store, CamelException *ex);
-static char *get_default_folder_name (CamelStore *store, CamelException *ex);
-
-static CamelFolder *lookup_folder (CamelStore *store, const char *folder_name);
-static void cache_folder (CamelStore *store, const char *folder_name,
- CamelFolder *folder);
-static void uncache_folder (CamelStore *store, CamelFolder *folder);
-
-static void
-camel_store_class_init (CamelStoreClass *camel_store_class)
-{
- parent_class = CAMEL_SERVICE_CLASS (camel_type_get_global_classfuncs (camel_service_get_type ()));
-
- /* virtual method definition */
- camel_store_class->get_folder = get_folder;
- camel_store_class->delete_folder = delete_folder;
- camel_store_class->rename_folder = rename_folder;
- camel_store_class->get_folder_name = get_folder_name;
- camel_store_class->get_root_folder_name = get_root_folder_name;
- camel_store_class->get_default_folder_name = get_default_folder_name;
- camel_store_class->lookup_folder = lookup_folder;
- camel_store_class->cache_folder = cache_folder;
- camel_store_class->uncache_folder = uncache_folder;
-}
-
-static void
-camel_store_init (void *o, void *k)
-{
- CamelStore *store = o;
-
- store->folders = g_hash_table_new (g_str_hash, g_str_equal);
-}
-
-static void
-camel_store_finalize (CamelObject *object)
-{
- CamelStore *store = CAMEL_STORE (object);
-
- if (store->folders) {
- if (g_hash_table_size (store->folders) != 0) {
- g_warning ("Folder cache for store %p contains "
- "%d folders at destruction.", store,
- g_hash_table_size (store->folders));
- }
- g_hash_table_destroy (store->folders);
- }
-}
-
-
-CamelType
-camel_store_get_type (void)
-{
- static CamelType camel_store_type = CAMEL_INVALID_TYPE;
-
- if (camel_store_type == CAMEL_INVALID_TYPE) {
- camel_store_type = camel_type_register (CAMEL_SERVICE_TYPE, "CamelStore",
- sizeof (CamelStore),
- sizeof (CamelStoreClass),
- (CamelObjectClassInitFunc) camel_store_class_init,
- NULL,
- (CamelObjectInitFunc) camel_store_init,
- (CamelObjectFinalizeFunc) camel_store_finalize );
- }
-
- return camel_store_type;
-}
-
-
-static CamelFolder *
-get_folder (CamelStore *store, const char *folder_name,
- gboolean create, CamelException *ex)
-{
- g_warning ("CamelStore::get_folder not implemented for `%s'",
- camel_type_to_name (CAMEL_OBJECT_GET_TYPE (store)));
- return NULL;
-}
-
-static void
-delete_folder (CamelStore *store, const char *folder_name, CamelException *ex)
-{
- g_warning ("CamelStore::delete_folder not implemented for `%s'",
- camel_type_to_name (CAMEL_OBJECT_GET_TYPE (store)));
-}
-
-static void rename_folder (CamelStore *store, const char *old_name,
- const char *new_name, CamelException *ex)
-{
- g_warning ("CamelStore::rename_folder not implemented for `%s'",
- camel_type_to_name (CAMEL_OBJECT_GET_TYPE (store)));
- camel_exception_setv(ex, CAMEL_EXCEPTION_SYSTEM,
- "rename folder unimplemented for: %s",
- camel_type_to_name (CAMEL_OBJECT_GET_TYPE (store)));
-}
-
-
-/* CamelStore::get_folder_name should:
- * a) make sure that the provided name is valid
- * b) return it in canonical form, in allocated memory.
- *
- * This is used to make sure that duplicate names for the same folder
- * don't result in duplicate cache entries.
- */
-static char *
-get_folder_name (CamelStore *store, const char *folder_name,
- CamelException *ex)
-{
- g_warning ("CamelStore::get_folder_name not implemented for `%s'",
- camel_type_to_name (CAMEL_OBJECT_GET_TYPE (store)));
- return NULL;
-}
-
-static char *
-get_root_folder_name (CamelStore *store, CamelException *ex)
-{
- return g_strdup ("/");
-}
-
-static char *
-get_default_folder_name (CamelStore *store, CamelException *ex)
-{
- return CS_CLASS (store)->get_root_folder_name (store, ex);
-}
-
-static CamelFolder *
-lookup_folder (CamelStore *store, const char *folder_name)
-{
- if (store->folders) {
- CamelFolder *folder = g_hash_table_lookup (store->folders, folder_name);
- if (folder)
- camel_object_ref(CAMEL_OBJECT(folder));
- return folder;
- }
- return NULL;
-}
-
-static void folder_finalize (CamelObject *folder, gpointer event_data, gpointer user_data)
-{
- CS_CLASS (user_data)->uncache_folder (CAMEL_STORE(user_data), CAMEL_FOLDER(folder));
-}
-
-static void
-cache_folder (CamelStore *store, const char *folder_name, CamelFolder *folder)
-{
- if (!store->folders)
- return;
-
- if (g_hash_table_lookup (store->folders, folder_name)) {
- g_warning ("Caching folder %s that already exists.",
- folder_name);
- }
- g_hash_table_insert (store->folders, g_strdup (folder_name), folder);
-
- camel_object_hook_event (CAMEL_OBJECT (folder), "finalize", folder_finalize, store);
-
- /*
- * gt_k so as not to get caught by my little gt_k cleanliness detector.
- *
- * gt_k_signal_connect_object (CAMEL_OBJECT (folder), "destroy",
- * GT_K_SIGNAL_FUNC (CS_CLASS (store)->uncache_folder),
- * CAMEL_OBJECT (store));
- */
-}
-
-static gboolean
-folder_matches (gpointer key, gpointer value, gpointer user_data)
-{
- if (value == user_data) {
- g_free (key);
- return TRUE;
- } else
- return FALSE;
-}
-
-static void
-uncache_folder (CamelStore *store, CamelFolder *folder)
-{
- g_hash_table_foreach_remove (store->folders, folder_matches, folder);
-}
-
-
-static CamelFolder *
-get_folder_internal (CamelStore *store, const char *folder_name,
- gboolean create, CamelException *ex)
-{
- CamelFolder *folder = NULL;
-
- /* Try cache first. */
- folder = CS_CLASS (store)->lookup_folder (store, folder_name);
-
- if (!folder) {
- folder = CS_CLASS (store)->get_folder (store, folder_name,
- create, ex);
- if (!folder)
- return NULL;
-
- CS_CLASS (store)->cache_folder (store, folder_name, folder);
- }
-
- return folder;
-}
-
-
-
-/**
- * camel_store_get_folder: Return the folder corresponding to a path.
- * @store: a CamelStore
- * @folder_name: name of the folder to get
- * @create: whether or not to create the folder if it doesn't already exist
- * @ex: a CamelException
- *
- * Returns the folder corresponding to the path @folder_name. If the
- * path begins with the separator character, it is relative to the
- * root folder. Otherwise, it is relative to the default folder. If
- * @create is %TRUE and the named folder does not already exist, it will
- * be created.
- *
- * Return value: the folder
- **/
-CamelFolder *
-camel_store_get_folder (CamelStore *store, const char *folder_name,
- gboolean create, CamelException *ex)
-{
- char *name;
- CamelFolder *folder = NULL;
-
- if (!camel_service_is_connected (CAMEL_SERVICE (store)))
- camel_service_connect (CAMEL_SERVICE (store), ex);
-
- name = CS_CLASS (store)->get_folder_name (store, folder_name, ex);
- if (name) {
- folder = get_folder_internal (store, name, create, ex);
- g_free (name);
- }
- return folder;
-}
-
-
-/**
- * camel_store_delete_folder: Delete the folder corresponding to a path.
- * @store: a CamelStore
- * @folder_name: name of the folder to delete
- * @ex: a CamelException
- *
- * Deletes the named folder. The folder must be empty.
- **/
-void
-camel_store_delete_folder (CamelStore *store, const char *folder_name,
- CamelException *ex)
-{
- char *name;
-
- name = CS_CLASS (store)->get_folder_name (store, folder_name, ex);
- if (name) {
- CS_CLASS (store)->delete_folder (store, name, ex);
- g_free (name);
- }
-}
-
-/**
- * camel_store_rename_folder:
- * @store:
- * @old_name:
- * @new_name:
- * @ex:
- *
- * Rename a named folder to a new name.
- **/
-void camel_store_rename_folder (CamelStore *store,
- const char *old_name,
- const char *new_name,
- CamelException *ex)
-{
- char *old, *new;
-
- old = CS_CLASS (store)->get_folder_name(store, old_name, ex);
- if (old) {
- new = CS_CLASS (store)->get_folder_name(store, new_name, ex);
- if (new) {
- CS_CLASS (store)->rename_folder(store, old, new, ex);
- g_free(new);
- }
- g_free(old);
- }
-}
-
-
-/**
- * camel_store_get_root_folder: return the top-level folder
- *
- * Returns the folder which is at the top of the folder hierarchy.
- * This folder may or may not be the same as the default folder.
- *
- * Return value: the top-level folder.
- **/
-CamelFolder *
-camel_store_get_root_folder (CamelStore *store, CamelException *ex)
-{
- char *name;
- CamelFolder *folder = NULL;
-
- name = CS_CLASS (store)->get_root_folder_name (store, ex);
- if (name) {
- folder = get_folder_internal (store, name, TRUE, ex);
- g_free (name);
- }
- return folder;
-}
-
-/**
- * camel_store_get_default_folder: return the store default folder
- *
- * The default folder is the folder which is presented to the user in
- * the default configuration. This defaults to the root folder if
- * the store doesn't override it.
- *
- * Return value: the default folder.
- **/
-CamelFolder *
-camel_store_get_default_folder (CamelStore *store, CamelException *ex)
-{
- char *name;
- CamelFolder *folder = NULL;
-
- name = CS_CLASS (store)->get_default_folder_name (store, ex);
- if (name) {
- folder = get_folder_internal (store, name, TRUE, ex);
- g_free (name);
- }
- return folder;
-}
-