default implementation to be called first by providers methods. It looks

1999-08-13  bertrand  <Bertrand.Guiheneuf@aful.org>

	* camel/camel-folder.c (_get_message): default implementation
	to be called first by providers methods. It looks in the
	folder message list (in memory) to see if the message has
	not already been retrieved, and in this case, returns
	the same CamelMimeMessage object

Caching messages in folder kworks. Providers will have to
do their job correctly.
Enough for today.

svn path=/trunk/; revision=1113

3 files changed, 29 insertions, 4 deletions

diff --git a/camel/camel-folder.c b/camel/camel-folder.c
index 8c4824168b..d7319c5017 100644
--- a/camel/camel-folder.c
+++ b/camel/camel-folder.c
@@ -774,8 +774,27 @@ camel_folder_expunge (CamelFolder *folder)
 static CamelMimeMessage *
 _get_message (CamelFolder *folder, gint number)
 {
+	CamelMimeMessage *a_message;
+	CamelMimeMessage *new_message = NULL;
+	GList *message_node;
 	
-	return NULL;
+	message_node = folder->message_list;
+	
+	/* look in folder message list if the 
+	 * if the message has not already been retreived */
+	while ((!new_message) && message_node) {
+		a_message = CAMEL_MIME_MESSAGE (message_node->data);
+		CAMEL_LOG_FULL_DEBUG ("CamelFolder::get_message Current message number is %d\n", a_message->message_number);
+		if (a_message && (a_message->message_number == number)) {
+			CAMEL_LOG_FULL_DEBUG ("CamelFolder::get_message message %d already retreived once: returning %pOK\n", 
+					      number, a_message);
+			new_message = a_message;
+		}
+		message_node = message_node->next;
+
+		CAMEL_LOG_FULL_DEBUG ("CamelFolder::get_message message node = %p\n", message_node);
+	}
+	return new_message;
 }
 
 
@@ -803,7 +822,7 @@ camel_folder_get_message (CamelFolder *folder, gint number)
 	if (!new_message) return NULL;
 	/* if the message has not been already put in 
 	 * this folder message list, put it in */
-	if (!g_list_find (folder->message_list, new_message))
+	if ((!folder->message_list) || (!g_list_find (folder->message_list, new_message)))
 	    folder->message_list = g_list_append (folder->message_list, new_message);
 	return new_message;
 }
@@ -840,8 +859,8 @@ _append_message (CamelFolder *folder, CamelMimeMessage *message)
 
 
 gint camel_folder_append_message (CamelFolder *folder, CamelMimeMessage *message)
-{
-	return CF_CLASS (folder)->append_message (folder, message);
+{	
+	return  CF_CLASS (folder)->append_message (folder, message);
 }
 
 
diff --git a/camel/camel-mime-message.h b/camel/camel-mime-message.h
index da691fa05d..522173c765 100644
--- a/camel/camel-mime-message.h
+++ b/camel/camel-mime-message.h
@@ -66,6 +66,7 @@ struct _CamelMimeMessage
 	GHashTable *recipients;
 	/*   -> each value is a GList of address strings */
 	/*      each key is a recipient type string in lower-case */
+	/* FIXME: these should be relaced by dedicated structure */
 	
 	/* other fields */
 	GHashTable *flags; /* boolean values */
diff --git a/camel/providers/MH/camel-mh-folder.c b/camel/providers/MH/camel-mh-folder.c
index a1c78fd309..a59566958a 100644
--- a/camel/providers/MH/camel-mh-folder.c
+++ b/camel/providers/MH/camel-mh-folder.c
@@ -410,6 +410,9 @@ _get_message (CamelFolder *folder, gint number)
 	
 	g_assert(folder);
 	
+	message = parent_class->get_message (folder, number);
+	if (message) return message;
+	
 	directory_path = mh_folder->directory_path;
 	if (!directory_path) return NULL;	
 	if (!camel_folder_exists (folder)) return NULL;
@@ -441,6 +444,8 @@ _get_message (CamelFolder *folder, gint number)
 			message = camel_mime_message_new_with_session ( (CamelSession *)NULL);
 			camel_data_wrapper_construct_from_stream ( CAMEL_DATA_WRAPPER (message), input_stream);
 			gtk_object_unref (GTK_OBJECT (input_stream));
+			message->message_number = number;
+#warning Set flags and all this stuff here
 		}
 	} else 
 		CAMEL_LOG_FULL_DEBUG  ("CanelMhFolder::get_message message number = %d, not found\n", number);