#include <glib.h> /* GHashTable, GPtrArray */
-#include <xapian.h>
-
struct _notmuch_query {
notmuch_database_t *notmuch;
const char *query_string;
notmuch_sort_t sort;
};
-struct _notmuch_messages {
+typedef struct _notmuch_mset_messages {
+ notmuch_messages_t base;
notmuch_database_t *notmuch;
Xapian::MSetIterator iterator;
Xapian::MSetIterator iterator_end;
+} notmuch_mset_messages_t;
+
+struct _notmuch_doc_id_set {
+ unsigned int *bitmap;
+ unsigned int bound;
};
+#define DOCIDSET_WORD(bit) ((bit) / sizeof (unsigned int))
+#define DOCIDSET_BIT(bit) ((bit) % sizeof (unsigned int))
+
struct _notmuch_threads {
- notmuch_database_t *notmuch;
- GPtrArray *threads;
- unsigned int index;
+ notmuch_query_t *query;
+
+ /* The ordered list of doc ids matched by the query. */
+ GArray *doc_ids;
+ /* Our iterator's current position in doc_ids. */
+ unsigned int doc_id_pos;
+ /* The set of matched docid's that have not been assigned to a
+ * thread. Initially, this contains every docid in doc_ids. */
+ notmuch_doc_id_set_t match_set;
};
notmuch_query_t *
return query;
}
+const char *
+notmuch_query_get_query_string (notmuch_query_t *query)
+{
+ return query->query_string;
+}
+
void
notmuch_query_set_sort (notmuch_query_t *query, notmuch_sort_t sort)
{
query->sort = sort;
}
+notmuch_sort_t
+notmuch_query_get_sort (notmuch_query_t *query)
+{
+ return query->sort;
+}
+
+/* We end up having to call the destructors explicitly because we had
+ * to use "placement new" in order to initialize C++ objects within a
+ * block that we allocated with talloc. So C++ is making talloc
+ * slightly less simple to use, (we wouldn't need
+ * talloc_set_destructor at all otherwise).
+ */
+static int
+_notmuch_messages_destructor (notmuch_mset_messages_t *messages)
+{
+ messages->iterator.~MSetIterator ();
+ messages->iterator_end.~MSetIterator ();
+
+ return 0;
+}
+
notmuch_messages_t *
-notmuch_query_search_messages (notmuch_query_t *query,
- int first,
- int max_messages)
+notmuch_query_search_messages (notmuch_query_t *query)
{
notmuch_database_t *notmuch = query->notmuch;
const char *query_string = query->query_string;
- notmuch_message_list_t *message_list;
- Xapian::MSetIterator i;
+ notmuch_mset_messages_t *messages;
- message_list = _notmuch_message_list_create (query);
- if (unlikely (message_list == NULL))
+ messages = talloc (query, notmuch_mset_messages_t);
+ if (unlikely (messages == NULL))
return NULL;
try {
+
+ messages->base.is_of_list_type = FALSE;
+ messages->base.iterator = NULL;
+ messages->notmuch = notmuch;
+ new (&messages->iterator) Xapian::MSetIterator ();
+ new (&messages->iterator_end) Xapian::MSetIterator ();
+
+ talloc_set_destructor (messages, _notmuch_messages_destructor);
+
Xapian::Enquire enquire (*notmuch->xapian_db);
Xapian::Query mail_query (talloc_asprintf (query, "%s%s",
_find_prefix ("type"),
Xapian::QueryParser::FLAG_WILDCARD |
Xapian::QueryParser::FLAG_PURE_NOT);
- if (strcmp (query_string, "") == 0) {
+ if (strcmp (query_string, "") == 0 ||
+ strcmp (query_string, "*") == 0)
+ {
final_query = mail_query;
} else {
string_query = notmuch->query_parser->
mail_query, string_query);
}
+ enquire.set_weighting_scheme (Xapian::BoolWeight());
+
switch (query->sort) {
case NOTMUCH_SORT_OLDEST_FIRST:
enquire.set_sort_by_value (NOTMUCH_VALUE_TIMESTAMP, FALSE);
case NOTMUCH_SORT_MESSAGE_ID:
enquire.set_sort_by_value (NOTMUCH_VALUE_MESSAGE_ID, FALSE);
break;
+ case NOTMUCH_SORT_UNSORTED:
+ break;
}
#if DEBUG_QUERY
enquire.set_query (final_query);
- if (max_messages == -1)
- max_messages = notmuch->xapian_db->get_doccount ();
- mset = enquire.get_mset (first, max_messages);
-
- for (i = mset.begin (); i != mset.end (); i++) {
- notmuch_message_t *message;
- notmuch_private_status_t status;
-
- message = _notmuch_message_create (message_list, notmuch,
- *i, &status);
- if (message == NULL)
- {
- if (status == NOTMUCH_PRIVATE_STATUS_NO_DOCUMENT_FOUND)
- INTERNAL_ERROR ("A message iterator contains a "
- "non-existent document ID.\n");
- break;
- }
-
- _notmuch_message_list_add_message (message_list, message);
- }
+ mset = enquire.get_mset (0, notmuch->xapian_db->get_doccount ());
+
+ messages->iterator = mset.begin ();
+ messages->iterator_end = mset.end ();
+
+ return &messages->base;
} catch (const Xapian::Error &error) {
- fprintf (stderr, "A Xapian exception occurred: %s\n",
+ fprintf (stderr, "A Xapian exception occurred performing query: %s\n",
error.get_msg().c_str());
fprintf (stderr, "Query string was: %s\n", query->query_string);
+ notmuch->exception_reported = TRUE;
+ talloc_free (messages);
+ return NULL;
+ }
+}
+
+notmuch_bool_t
+_notmuch_mset_messages_valid (notmuch_messages_t *messages)
+{
+ notmuch_mset_messages_t *mset_messages;
+
+ mset_messages = (notmuch_mset_messages_t *) messages;
+
+ return (mset_messages->iterator != mset_messages->iterator_end);
+}
+
+static Xapian::docid
+_notmuch_mset_messages_get_doc_id (notmuch_messages_t *messages)
+{
+ notmuch_mset_messages_t *mset_messages;
+
+ mset_messages = (notmuch_mset_messages_t *) messages;
+
+ if (! _notmuch_mset_messages_valid (&mset_messages->base))
+ return 0;
+
+ return *mset_messages->iterator;
+}
+
+notmuch_message_t *
+_notmuch_mset_messages_get (notmuch_messages_t *messages)
+{
+ notmuch_message_t *message;
+ Xapian::docid doc_id;
+ notmuch_private_status_t status;
+ notmuch_mset_messages_t *mset_messages;
+
+ mset_messages = (notmuch_mset_messages_t *) messages;
+
+ if (! _notmuch_mset_messages_valid (&mset_messages->base))
+ return NULL;
+
+ doc_id = *mset_messages->iterator;
+
+ message = _notmuch_message_create (mset_messages,
+ mset_messages->notmuch, doc_id,
+ &status);
+
+ if (message == NULL &&
+ status == NOTMUCH_PRIVATE_STATUS_NO_DOCUMENT_FOUND)
+ {
+ INTERNAL_ERROR ("a messages iterator contains a non-existent document ID.\n");
}
- return _notmuch_messages_create (message_list);
+ return message;
+}
+
+void
+_notmuch_mset_messages_move_to_next (notmuch_messages_t *messages)
+{
+ notmuch_mset_messages_t *mset_messages;
+
+ mset_messages = (notmuch_mset_messages_t *) messages;
+
+ mset_messages->iterator++;
+}
+
+static notmuch_bool_t
+_notmuch_doc_id_set_init (void *ctx,
+ notmuch_doc_id_set_t *doc_ids,
+ GArray *arr, unsigned int bound)
+{
+ size_t count = (bound + sizeof (doc_ids->bitmap[0]) - 1) /
+ sizeof (doc_ids->bitmap[0]);
+ unsigned int *bitmap = talloc_zero_array (ctx, unsigned int, count);
+
+ if (bitmap == NULL)
+ return FALSE;
+
+ doc_ids->bitmap = bitmap;
+ doc_ids->bound = bound;
+
+ for (unsigned int i = 0; i < arr->len; i++) {
+ unsigned int doc_id = g_array_index (arr, unsigned int, i);
+ bitmap[DOCIDSET_WORD(doc_id)] |= 1 << DOCIDSET_BIT(doc_id);
+ }
+
+ return TRUE;
+}
+
+notmuch_bool_t
+_notmuch_doc_id_set_contains (notmuch_doc_id_set_t *doc_ids,
+ unsigned int doc_id)
+{
+ if (doc_id >= doc_ids->bound)
+ return FALSE;
+ return doc_ids->bitmap[DOCIDSET_WORD(doc_id)] & (1 << DOCIDSET_BIT(doc_id));
+}
+
+void
+_notmuch_doc_id_set_remove (notmuch_doc_id_set_t *doc_ids,
+ unsigned int doc_id)
+{
+ if (doc_id < doc_ids->bound)
+ doc_ids->bitmap[DOCIDSET_WORD(doc_id)] &= ~(1 << DOCIDSET_BIT(doc_id));
}
/* Glib objects force use to use a talloc destructor as well, (but not
static int
_notmuch_threads_destructor (notmuch_threads_t *threads)
{
- g_ptr_array_free (threads->threads, TRUE);
+ if (threads->doc_ids)
+ g_array_unref (threads->doc_ids);
return 0;
}
notmuch_threads_t *
-notmuch_query_search_threads (notmuch_query_t *query,
- int first,
- int max_threads)
+notmuch_query_search_threads (notmuch_query_t *query)
{
notmuch_threads_t *threads;
- notmuch_thread_t *thread;
- const char *thread_id;
notmuch_messages_t *messages;
- notmuch_message_t *message;
- GHashTable *seen;
- int messages_seen = 0, threads_seen = 0;
+ Xapian::docid max_doc_id = 0;
threads = talloc (query, notmuch_threads_t);
if (threads == NULL)
return NULL;
-
- threads->notmuch = query->notmuch;
- threads->threads = g_ptr_array_new ();
- threads->index = 0;
-
+ threads->doc_ids = NULL;
talloc_set_destructor (threads, _notmuch_threads_destructor);
- seen = g_hash_table_new_full (g_str_hash, g_str_equal,
- free, NULL);
-
- while (max_threads < 0 || threads_seen < first + max_threads)
- {
- int messages_seen_previously = messages_seen;
-
- for (messages = notmuch_query_search_messages (query,
- messages_seen,
- max_threads);
- notmuch_messages_has_more (messages);
- notmuch_messages_advance (messages))
- {
- message = notmuch_messages_get (messages);
-
- thread_id = notmuch_message_get_thread_id (message);
-
- if (! g_hash_table_lookup_extended (seen,
- thread_id, NULL,
- (void **) &thread))
- {
- if (threads_seen >= first) {
- thread = _notmuch_thread_create (query, query->notmuch,
- thread_id,
- query->query_string);
- g_ptr_array_add (threads->threads, thread);
- } else {
- thread = NULL;
- }
-
- g_hash_table_insert (seen, xstrdup (thread_id), thread);
+ threads->query = query;
- threads_seen++;
- }
-
- notmuch_message_destroy (message);
+ messages = notmuch_query_search_messages (query);
+ if (messages == NULL) {
+ talloc_free (threads);
+ return NULL;
+ }
- messages_seen++;
+ threads->doc_ids = g_array_new (FALSE, FALSE, sizeof (unsigned int));
+ while (notmuch_messages_valid (messages)) {
+ unsigned int doc_id = _notmuch_mset_messages_get_doc_id (messages);
+ g_array_append_val (threads->doc_ids, doc_id);
+ max_doc_id = MAX (max_doc_id, doc_id);
+ notmuch_messages_move_to_next (messages);
+ }
+ threads->doc_id_pos = 0;
- if (max_threads >= 0 && threads_seen >= first + max_threads)
- break;
- }
+ talloc_free (messages);
- /* Stop if we're not seeing any more messages. */
- if (messages_seen == messages_seen_previously)
- break;
+ if (! _notmuch_doc_id_set_init (threads, &threads->match_set,
+ threads->doc_ids, max_doc_id + 1)) {
+ talloc_free (threads);
+ return NULL;
}
- g_hash_table_unref (seen);
-
return threads;
}
}
notmuch_bool_t
-notmuch_threads_has_more (notmuch_threads_t *threads)
+notmuch_threads_valid (notmuch_threads_t *threads)
{
- return (threads->index < threads->threads->len);
+ unsigned int doc_id;
+
+ while (threads->doc_id_pos < threads->doc_ids->len) {
+ doc_id = g_array_index (threads->doc_ids, unsigned int,
+ threads->doc_id_pos);
+ if (_notmuch_doc_id_set_contains (&threads->match_set, doc_id))
+ break;
+
+ threads->doc_id_pos++;
+ }
+
+ return threads->doc_id_pos < threads->doc_ids->len;
}
notmuch_thread_t *
notmuch_threads_get (notmuch_threads_t *threads)
{
- if (! notmuch_threads_has_more (threads))
+ unsigned int doc_id;
+
+ if (! notmuch_threads_valid (threads))
return NULL;
- return (notmuch_thread_t *) g_ptr_array_index (threads->threads,
- threads->index);
+ doc_id = g_array_index (threads->doc_ids, unsigned int,
+ threads->doc_id_pos);
+ return _notmuch_thread_create (threads->query,
+ threads->query->notmuch,
+ doc_id,
+ &threads->match_set,
+ threads->query->sort);
}
void
-notmuch_threads_advance (notmuch_threads_t *threads)
+notmuch_threads_move_to_next (notmuch_threads_t *threads)
{
- threads->index++;
+ threads->doc_id_pos++;
}
void
{
talloc_free (threads);
}
+
+unsigned
+notmuch_query_count_messages (notmuch_query_t *query)
+{
+ notmuch_database_t *notmuch = query->notmuch;
+ const char *query_string = query->query_string;
+ Xapian::doccount count = 0;
+
+ try {
+ Xapian::Enquire enquire (*notmuch->xapian_db);
+ Xapian::Query mail_query (talloc_asprintf (query, "%s%s",
+ _find_prefix ("type"),
+ "mail"));
+ Xapian::Query string_query, final_query;
+ Xapian::MSet mset;
+ unsigned int flags = (Xapian::QueryParser::FLAG_BOOLEAN |
+ Xapian::QueryParser::FLAG_PHRASE |
+ Xapian::QueryParser::FLAG_LOVEHATE |
+ Xapian::QueryParser::FLAG_BOOLEAN_ANY_CASE |
+ Xapian::QueryParser::FLAG_WILDCARD |
+ Xapian::QueryParser::FLAG_PURE_NOT);
+
+ if (strcmp (query_string, "") == 0 ||
+ strcmp (query_string, "*") == 0)
+ {
+ final_query = mail_query;
+ } else {
+ string_query = notmuch->query_parser->
+ parse_query (query_string, flags);
+ final_query = Xapian::Query (Xapian::Query::OP_AND,
+ mail_query, string_query);
+ }
+
+ enquire.set_weighting_scheme(Xapian::BoolWeight());
+ enquire.set_docid_order(Xapian::Enquire::ASCENDING);
+
+#if DEBUG_QUERY
+ fprintf (stderr, "Final query is:\n%s\n", final_query.get_description().c_str());
+#endif
+
+ enquire.set_query (final_query);
+
+ mset = enquire.get_mset (0, notmuch->xapian_db->get_doccount ());
+
+ count = mset.get_matches_estimated();
+
+ } catch (const Xapian::Error &error) {
+ fprintf (stderr, "A Xapian exception occurred: %s\n",
+ error.get_msg().c_str());
+ fprintf (stderr, "Query string was: %s\n", query->query_string);
+ }
+
+ return count;
+}
projects / notmuch / blobdiff