First batch of disconnected IMAP-related stuff. This adds local

	caching of message parts, but NOT any actual disconnected support.
	(But it should speed up IMAP use.)

	* providers/imap/camel-imap-message-cache.c: New class for caching
	message data to disk, and removing it when it's no longer
	relevant. Will eventually also support merging message parts
	together to save on files. Or maybe using a db instead of files?

	* providers/imap/camel-imap-private.h: Add a cache_lock to
	CamelImapFolderPrivate. This lock must be recursive, so make both
	locks EMutexes rather than GMutex.

	* providers/imap/camel-imap-folder.c (parse_fetch_response): "The
	only FETCH response parser you need!" Replaces the various
	almost-correct bits of code formerly scattered throughout this
	file with a single fully-correct function that can handle any
	FETCH response at any time, so we don't get confused by seeing a
	flags update when we were only expecting a message body, etc.
	(camel_imap_folder_fetch_data): FETCH a message body part either
	from the cache or the server
	(camel_imap_folder_changed): Remove expunged messages from the
	message cache.
	(camel_imap_folder_new): Change to take a directory instead of a
	summary file name. Create a CamelImapMessageCache for the folder.
	(imap_finalize): Unref the message cache.
	(camel_imap_folder_selected, imap_rescan, get_content,
	get_message, imap_get_message, imap_update_summary): Redone a
	bunch to use parse_fetch_data, CamelImapMessageCache, etc.

	* providers/imap/camel-imap-store.c (get_folder): Pass directory
	name to camel_imap_folder_new, not summary filename. Use
	e_path_to_physical to generate a path with /subfolders/ inserted
	between directory components.

	* providers/imap/camel-imap-wrapper.c (camel_imap_wrapper_new):
	Call camel_imap_folder_fetch_data (with cache_only TRUE) and if
	the data is cached, return an online datawrapper rather than an
	offline one.
	(write_to_stream): Use camel_imap_folder_fetch_data (with
	cache_only FALSE) here too

	* providers/imap/camel-imap-utils.c (imap_skip_list): Renamed from
	skip_list and made non-static.

svn path=/trunk/; revision=8743

1 files changed, 85 insertions, 0 deletions

diff --git a/camel/providers/imap/camel-imap-message-cache.h b/camel/providers/imap/camel-imap-message-cache.h
new file mode 100644
index 0000000000..1ac48086ae
--- /dev/null
+++ b/camel/providers/imap/camel-imap-message-cache.h
@@ -0,0 +1,85 @@
+/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
+/* camel-imap-message-cache.h: Class for an IMAP message cache */
+
+/* 
+ * Author: 
+ *   Dan Winship <danw@ximian.com>
+ *
+ * Copyright (C) 2001 Ximian, Inc. (www.ximian.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
+ */
+
+
+#ifndef CAMEL_IMAP_MESSAGE_CACHE_H
+#define CAMEL_IMAP_MESSAGE_CACHE_H 1
+
+
+#ifdef __cplusplus
+extern "C" {
+#pragma }
+#endif /* __cplusplus }*/
+
+#include "camel-imap-types.h"
+#include "camel-folder.h"
+#include <camel/camel-folder-search.h>
+
+#define CAMEL_IMAP_MESSAGE_CACHE_TYPE     (camel_imap_message_cache_get_type ())
+#define CAMEL_IMAP_MESSAGE_CACHE(obj)     (CAMEL_CHECK_CAST((obj), CAMEL_IMAP_MESSAGE_CACHE_TYPE, CamelImapFolder))
+#define CAMEL_IMAP_MESSAGE_CACHE_CLASS(k) (CAMEL_CHECK_CLASS_CAST ((k), CAMEL_IMAP_MESSAGE_CACHE_TYPE, CamelImapFolderClass))
+#define CAMEL_IS_IMAP_MESSAGE_CACHE(o)    (CAMEL_CHECK_TYPE((o), CAMEL_IMAP_MESSAGE_CACHE_TYPE))
+
+struct _CamelImapMessageCache {
+	CamelObject parent_object;
+
+	char *path;
+	GHashTable *parts, *cached;
+};
+
+
+typedef struct {
+	CamelFolderClass parent_class;
+
+	/* Virtual methods */	
+	
+} CamelImapMessageCacheClass;
+
+
+/* public methods */
+CamelImapMessageCache *camel_imap_message_cache_new (const char *path,
+						     CamelFolderSummary *summ,
+						     CamelException *ex);
+
+CamelStream *camel_imap_message_cache_insert (CamelImapMessageCache *cache,
+					      const char *uid,
+					      const char *part_spec,
+					      const char *data,
+					      int len);
+CamelStream *camel_imap_message_cache_get    (CamelImapMessageCache *cache,
+					      const char *uid,
+					      const char *part_spec);
+void         camel_imap_message_cache_remove (CamelImapMessageCache *cache,
+					      const char *uid);
+
+
+/* Standard Camel function */
+CamelType camel_imap_message_cache_get_type (void);
+
+#ifdef __cplusplus
+}
+#endif /* __cplusplus */
+
+#endif /* CAMEL_IMAP_MESSAGE_CACHE_H */