mirror of
https://git.notmuchmail.org/git/notmuch
synced 2024-11-26 20:57:58 +01:00
f970d8078c
Previously, the notmuch_messages_t object was a linked list built on top of a linked-list node with the odd name of notmuch_message_list_t. Now, we've got much more sane naming with notmuch_message_list_t being a list built on a linked-list node named notmuch_message_node_t. And now the public notmuch_messages_t object is a separate iterator based on notmuch_message_node_t. This means the interfaces for the new notmuch_message_list_t object are now made available to the library internals.
121 lines
2.8 KiB
C
121 lines
2.8 KiB
C
/* messages.c - Iterator for a set of messages
|
|
*
|
|
* Copyright © 2009 Carl Worth
|
|
*
|
|
* 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 3 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, see http://www.gnu.org/licenses/ .
|
|
*
|
|
* Author: Carl Worth <cworth@cworth.org>
|
|
*/
|
|
|
|
#include "notmuch-private.h"
|
|
|
|
#include <glib.h> /* GList */
|
|
|
|
|
|
struct _notmuch_messages {
|
|
notmuch_message_node_t *iterator;
|
|
};
|
|
|
|
/* Create a new notmuch_message_list_t object, with 'ctx' as its
|
|
* talloc owner.
|
|
*
|
|
* This function can return NULL in case of out-of-memory.
|
|
*/
|
|
notmuch_message_list_t *
|
|
_notmuch_message_list_create (const void *ctx)
|
|
{
|
|
notmuch_message_list_t *list;
|
|
|
|
list = talloc (ctx, notmuch_message_list_t);
|
|
if (unlikely (list == NULL))
|
|
return NULL;
|
|
|
|
list->head = NULL;
|
|
list->tail = &list->head;
|
|
|
|
return list;
|
|
}
|
|
|
|
/* Append 'node' (which can of course point to an aribtrarily long
|
|
* list of nodes) to the end of 'list'.
|
|
*/
|
|
void
|
|
_notmuch_message_list_append (notmuch_message_list_t *list,
|
|
notmuch_message_node_t *node)
|
|
{
|
|
*(list->tail) = node;
|
|
list->tail = &node->next;
|
|
}
|
|
|
|
/* Allocate a new node for 'message' and append it to the end of
|
|
* 'list'.
|
|
*/
|
|
void
|
|
_notmuch_message_list_add_message (notmuch_message_list_t *list,
|
|
notmuch_message_t *message)
|
|
{
|
|
notmuch_message_node_t *node = talloc (list, notmuch_message_node_t);
|
|
|
|
node->message = message;
|
|
node->next = NULL;
|
|
|
|
_notmuch_message_list_append (list, node);
|
|
}
|
|
|
|
notmuch_messages_t *
|
|
_notmuch_messages_create (notmuch_message_list_t *list)
|
|
{
|
|
notmuch_messages_t *messages;
|
|
|
|
if (list->head == NULL)
|
|
return NULL;
|
|
|
|
messages = talloc (list, notmuch_messages_t);
|
|
if (unlikely (messages == NULL))
|
|
return NULL;
|
|
|
|
messages->iterator = list->head;
|
|
|
|
return messages;
|
|
}
|
|
|
|
notmuch_bool_t
|
|
notmuch_messages_has_more (notmuch_messages_t *messages)
|
|
{
|
|
return (messages != NULL && messages->iterator != NULL);
|
|
}
|
|
|
|
notmuch_message_t *
|
|
notmuch_messages_get (notmuch_messages_t *messages)
|
|
{
|
|
if (messages->iterator == NULL)
|
|
return NULL;
|
|
|
|
return messages->iterator->message;
|
|
}
|
|
|
|
void
|
|
notmuch_messages_advance (notmuch_messages_t *messages)
|
|
{
|
|
if (messages->iterator == NULL)
|
|
return;
|
|
|
|
messages->iterator = messages->iterator->next;
|
|
}
|
|
|
|
void
|
|
notmuch_messages_destroy (notmuch_messages_t *messages)
|
|
{
|
|
talloc_free (messages);
|
|
}
|