1 /* query.cc - Support for searching 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"
24 #include <glib.h> /* GHashTable, GPtrArray */
28 struct _notmuch_query {
29 notmuch_database_t *notmuch;
30 const char *query_string;
34 struct _notmuch_messages {
35 notmuch_database_t *notmuch;
36 Xapian::MSetIterator iterator;
37 Xapian::MSetIterator iterator_end;
40 struct _notmuch_threads {
41 notmuch_database_t *notmuch;
47 notmuch_query_create (notmuch_database_t *notmuch,
48 const char *query_string)
50 notmuch_query_t *query;
53 fprintf (stderr, "Query string is:\n%s\n", query_string);
56 query = talloc (NULL, notmuch_query_t);
57 if (unlikely (query == NULL))
60 query->notmuch = notmuch;
62 query->query_string = talloc_strdup (query, query_string);
64 query->sort = NOTMUCH_SORT_DATE;
70 notmuch_query_set_sort (notmuch_query_t *query, notmuch_sort_t sort)
76 notmuch_query_search_messages (notmuch_query_t *query,
80 notmuch_database_t *notmuch = query->notmuch;
81 const char *query_string = query->query_string;
82 notmuch_message_list_t *message_list;
83 Xapian::MSetIterator i;
85 message_list = _notmuch_message_list_create (query);
86 if (unlikely (message_list == NULL))
90 Xapian::Enquire enquire (*notmuch->xapian_db);
91 Xapian::Query mail_query (talloc_asprintf (query, "%s%s",
92 _find_prefix ("type"),
94 Xapian::Query string_query, final_query;
96 unsigned int flags = (Xapian::QueryParser::FLAG_BOOLEAN |
97 Xapian::QueryParser::FLAG_PHRASE |
98 Xapian::QueryParser::FLAG_LOVEHATE |
99 Xapian::QueryParser::FLAG_BOOLEAN_ANY_CASE |
100 Xapian::QueryParser::FLAG_WILDCARD);
102 if (strcmp (query_string, "") == 0) {
103 final_query = mail_query;
105 string_query = notmuch->query_parser->
106 parse_query (query_string, flags);
107 final_query = Xapian::Query (Xapian::Query::OP_AND,
108 mail_query, string_query);
111 switch (query->sort) {
112 case NOTMUCH_SORT_DATE:
113 enquire.set_sort_by_value (NOTMUCH_VALUE_TIMESTAMP, FALSE);
115 case NOTMUCH_SORT_DATE_REVERSE:
116 enquire.set_sort_by_value (NOTMUCH_VALUE_TIMESTAMP, TRUE);
118 case NOTMUCH_SORT_MESSAGE_ID:
119 enquire.set_sort_by_value (NOTMUCH_VALUE_MESSAGE_ID, FALSE);
124 fprintf (stderr, "Final query is:\n%s\n", final_query.get_description().c_str());
127 enquire.set_query (final_query);
129 if (max_messages == -1)
130 max_messages = notmuch->xapian_db->get_doccount ();
131 mset = enquire.get_mset (first, max_messages);
133 for (i = mset.begin (); i != mset.end (); i++) {
134 notmuch_message_t *message;
135 notmuch_private_status_t status;
137 message = _notmuch_message_create (message_list, notmuch,
141 if (status == NOTMUCH_PRIVATE_STATUS_NO_DOCUMENT_FOUND)
142 INTERNAL_ERROR ("A message iterator contains a "
143 "non-existent document ID.\n");
147 _notmuch_message_list_add_message (message_list, message);
150 } catch (const Xapian::Error &error) {
151 fprintf (stderr, "A Xapian exception occurred: %s\n",
152 error.get_msg().c_str());
155 return _notmuch_messages_create (message_list);
158 /* Glib objects force use to use a talloc destructor as well, (but not
159 * nearly as ugly as the for messages due to C++ objects). At
160 * this point, I'd really like to have some talloc-friendly
161 * equivalents for the few pieces of glib that I'm using. */
163 _notmuch_threads_destructor (notmuch_threads_t *threads)
165 g_ptr_array_free (threads->threads, TRUE);
171 notmuch_query_search_threads (notmuch_query_t *query,
175 notmuch_threads_t *threads;
176 notmuch_thread_t *thread;
177 const char *thread_id;
178 notmuch_messages_t *messages;
179 notmuch_message_t *message;
181 int messages_seen = 0, threads_seen = 0;
183 threads = talloc (query, notmuch_threads_t);
187 threads->notmuch = query->notmuch;
188 threads->threads = g_ptr_array_new ();
191 talloc_set_destructor (threads, _notmuch_threads_destructor);
193 seen = g_hash_table_new_full (g_str_hash, g_str_equal,
196 while (max_threads < 0 || threads_seen < first + max_threads)
198 int messages_seen_previously = messages_seen;
200 for (messages = notmuch_query_search_messages (query,
203 notmuch_messages_has_more (messages);
204 notmuch_messages_advance (messages))
206 message = notmuch_messages_get (messages);
208 thread_id = notmuch_message_get_thread_id (message);
210 if (! g_hash_table_lookup_extended (seen,
214 if (threads_seen >= first) {
215 thread = _notmuch_thread_create (query, query->notmuch,
217 query->query_string);
218 g_ptr_array_add (threads->threads, thread);
223 g_hash_table_insert (seen, xstrdup (thread_id), thread);
228 notmuch_message_destroy (message);
232 if (max_threads >= 0 && threads_seen >= first + max_threads)
236 /* Stop if we're not seeing any more messages. */
237 if (messages_seen == messages_seen_previously)
241 g_hash_table_unref (seen);
247 notmuch_query_destroy (notmuch_query_t *query)
253 notmuch_threads_has_more (notmuch_threads_t *threads)
255 return (threads->index < threads->threads->len);
259 notmuch_threads_get (notmuch_threads_t *threads)
261 if (! notmuch_threads_has_more (threads))
264 return (notmuch_thread_t *) g_ptr_array_index (threads->threads,
269 notmuch_threads_advance (notmuch_threads_t *threads)
275 notmuch_threads_destroy (notmuch_threads_t *threads)
277 talloc_free (threads);