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/* 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;
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);
}
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