mirror of
https://git.notmuchmail.org/git/notmuch
synced 2024-11-21 18:38:08 +01:00
8480a0a003
The notmuch_filenames_t object might easily outlive the original object owning the filename list. So take a talloc reference to keep things safe.
118 lines
2.8 KiB
C
118 lines
2.8 KiB
C
/* filenames.c - Iterator for a list of filenames
|
|
*
|
|
* Copyright © 2010 Intel Corporation
|
|
*
|
|
* 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"
|
|
|
|
struct _notmuch_filenames {
|
|
notmuch_filename_node_t *iterator;
|
|
};
|
|
|
|
/* Create a new notmuch_filename_list_t object, with 'ctx' as its
|
|
* talloc owner.
|
|
*
|
|
* This function can return NULL in case of out-of-memory.
|
|
*/
|
|
notmuch_filename_list_t *
|
|
_notmuch_filename_list_create (const void *ctx)
|
|
{
|
|
notmuch_filename_list_t *list;
|
|
|
|
list = talloc (ctx, notmuch_filename_list_t);
|
|
if (unlikely (list == NULL))
|
|
return NULL;
|
|
|
|
list->head = NULL;
|
|
list->tail = &list->head;
|
|
|
|
return list;
|
|
}
|
|
|
|
void
|
|
_notmuch_filename_list_add_filename (notmuch_filename_list_t *list,
|
|
const char *filename)
|
|
{
|
|
/* Create and initialize new node. */
|
|
notmuch_filename_node_t *node = talloc (list,
|
|
notmuch_filename_node_t);
|
|
|
|
node->filename = talloc_strdup (node, filename);
|
|
node->next = NULL;
|
|
|
|
/* Append the node to the list. */
|
|
*(list->tail) = node;
|
|
list->tail = &node->next;
|
|
}
|
|
|
|
void
|
|
_notmuch_filename_list_destroy (notmuch_filename_list_t *list)
|
|
{
|
|
talloc_free (list);
|
|
}
|
|
|
|
/* The notmuch_filenames_t is an iterator object for a
|
|
* notmuch_filename_list_t */
|
|
notmuch_filenames_t *
|
|
_notmuch_filenames_create (const void *ctx,
|
|
notmuch_filename_list_t *list)
|
|
{
|
|
notmuch_filenames_t *filenames;
|
|
|
|
filenames = talloc (ctx, notmuch_filenames_t);
|
|
if (unlikely (filenames == NULL))
|
|
return NULL;
|
|
|
|
filenames->iterator = list->head;
|
|
(void) talloc_reference (filenames, list);
|
|
|
|
return filenames;
|
|
}
|
|
|
|
notmuch_bool_t
|
|
notmuch_filenames_valid (notmuch_filenames_t *filenames)
|
|
{
|
|
if (filenames == NULL)
|
|
return FALSE;
|
|
|
|
return (filenames->iterator != NULL);
|
|
}
|
|
|
|
const char *
|
|
notmuch_filenames_get (notmuch_filenames_t *filenames)
|
|
{
|
|
if (filenames->iterator == NULL)
|
|
return NULL;
|
|
|
|
return filenames->iterator->filename;
|
|
}
|
|
|
|
void
|
|
notmuch_filenames_move_to_next (notmuch_filenames_t *filenames)
|
|
{
|
|
if (filenames->iterator == NULL)
|
|
return;
|
|
|
|
filenames->iterator = filenames->iterator->next;
|
|
}
|
|
|
|
void
|
|
notmuch_filenames_destroy (notmuch_filenames_t *filenames)
|
|
{
|
|
talloc_free (filenames);
|
|
}
|