1 /* message.cc - Results of message-based searches from a notmuch database
3 * Copyright © 2009 Carl Worth
5 * This program is free software: you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation, either version 3 of the License, or
8 * (at your option) any later version.
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
15 * You should have received a copy of the GNU General Public License
16 * along with this program. If not, see http://www.gnu.org/licenses/ .
18 * Author: Carl Worth <cworth@cworth.org>
21 #include "notmuch-private.h"
22 #include "database-private.h"
26 struct _notmuch_message {
30 struct _notmuch_tags {
31 Xapian::TermIterator iterator;
32 Xapian::TermIterator iterator_end;
35 /* We end up having to call the destructor explicitly because we had
36 * to use "placement new" in order to initialize C++ objects within a
37 * block that we allocated with talloc. So C++ is making talloc
38 * slightly less simple to use, (we wouldn't need
39 * talloc_set_destructor at all otherwise).
42 _notmuch_message_destructor (notmuch_message_t *message)
44 message->doc.~Document ();
50 _notmuch_message_create (notmuch_results_t *owner,
51 notmuch_database_t *notmuch,
54 notmuch_message_t *message;
56 message = talloc (owner, notmuch_message_t);
57 if (unlikely (message == NULL))
60 new (&message->doc) Xapian::Document;
62 talloc_set_destructor (message, _notmuch_message_destructor);
64 message->doc = notmuch->xapian_db->get_document (doc_id);
70 notmuch_message_get_message_id (notmuch_message_t *message)
72 Xapian::TermIterator i;
74 i = message->doc.termlist_begin ();
76 if (i != message->doc.termlist_end ())
77 return talloc_strdup (message, (*i).c_str () + 1);
82 /* We end up having to call the destructors explicitly because we had
83 * to use "placement new" in order to initialize C++ objects within a
84 * block that we allocated with talloc. So C++ is making talloc
85 * slightly less simple to use, (we wouldn't need
86 * talloc_set_destructor at all otherwise).
89 _notmuch_tags_destructor (notmuch_tags_t *tags)
91 tags->iterator.~TermIterator ();
92 tags->iterator_end.~TermIterator ();
98 notmuch_message_get_tags (notmuch_message_t *message)
100 notmuch_tags_t *tags;
102 tags = talloc (message, notmuch_tags_t);
103 if (unlikely (tags == NULL))
106 new (&tags->iterator) Xapian::TermIterator;
107 new (&tags->iterator_end) Xapian::TermIterator;
109 talloc_set_destructor (tags, _notmuch_tags_destructor);
111 tags->iterator = message->doc.termlist_begin ();
112 tags->iterator.skip_to ("L");
113 tags->iterator_end = message->doc.termlist_end ();
119 notmuch_message_destroy (notmuch_message_t *message)
121 talloc_free (message);
125 notmuch_tags_has_more (notmuch_tags_t *tags)
129 if (tags->iterator == tags->iterator_end)
133 if (s.size () && s[0] == 'L')
140 notmuch_tags_get (notmuch_tags_t *tags)
142 return talloc_strdup (tags, (*tags->iterator).c_str () + 1);
146 notmuch_tags_advance (notmuch_tags_t *tags)
152 notmuch_tags_destroy (notmuch_tags_t *tags)