diff options
Diffstat (limited to 'tags.c')
-rw-r--r-- | tags.c | 104 |
1 files changed, 104 insertions, 0 deletions
@@ -0,0 +1,104 @@ +/* tags.c - Iterator for tags returned from message or thread + * + * 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_tags { + GList *tags; + GList *iterator; +}; + +/* XXX: Should write some talloc-friendly list to avoid the need for + * this. */ +static int +_notmuch_tags_destructor (notmuch_tags_t *tags) +{ + g_list_free (tags->tags); + + return 0; +} + +/* Create a new notmuch_tags_t object, with 'ctx' as its talloc owner. + * + * This function can return NULL in case of out-of-memory. + */ +notmuch_tags_t * +_notmuch_tags_create (void *ctx) +{ + notmuch_tags_t *tags; + + tags = talloc (ctx, notmuch_tags_t); + if (unlikely (tags == NULL)) + return NULL; + + talloc_set_destructor (tags, _notmuch_tags_destructor); + + tags->tags = NULL; + tags->iterator = NULL; + + return tags; +} + +void +_notmuch_tags_add_tag (notmuch_tags_t *tags, const char *tag) +{ + tags->tags = g_list_prepend (tags->tags, talloc_strdup (tags, tag)); +} + +void +_notmuch_tags_sort (notmuch_tags_t *tags) +{ + tags->tags = g_list_sort (tags->tags, (GCompareFunc) strcmp); +} + +void +_notmuch_tags_reset (notmuch_tags_t *tags) +{ + tags->iterator = tags->tags; +} + +notmuch_bool_t +notmuch_tags_has_more (notmuch_tags_t *tags) +{ + return tags->iterator != NULL; +} + +const char * +notmuch_tags_get (notmuch_tags_t *tags) +{ + if (tags->iterator) + return (char *) tags->iterator->data; + else + return NULL; +} + +void +notmuch_tags_advance (notmuch_tags_t *tags) +{ + tags->iterator = tags->iterator->next; +} + +void +notmuch_tags_destroy (notmuch_tags_t *tags) +{ + talloc_free (tags); +} |