X-Git-Url: https://git.notmuchmail.org/git?p=notmuch;a=blobdiff_plain;f=lib%2Fquery.cc;h=ef2a11f86cf3aa8489bfe1a5bded71fa64249cc3;hp=75f22b30f145b7ad148c7d77a9d925e215a37b83;hb=c9eb94d7fb520612374870dda9b9058a85c9b03d;hpb=e5da2b701fc172d2255f205414f18c40f4343fbb diff --git a/lib/query.cc b/lib/query.cc index 75f22b30..ef2a11f8 100644 --- a/lib/query.cc +++ b/lib/query.cc @@ -23,26 +23,47 @@ #include /* GHashTable, GPtrArray */ -#include - struct _notmuch_query { notmuch_database_t *notmuch; const char *query_string; notmuch_sort_t sort; + notmuch_string_list_t *exclude_terms; + notmuch_bool_t omit_excluded_messages; }; -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; }; -struct _notmuch_threads { - notmuch_database_t *notmuch; - GPtrArray *threads; - unsigned int index; +#define DOCIDSET_WORD(bit) ((bit) / sizeof (unsigned int)) +#define DOCIDSET_BIT(bit) ((bit) % sizeof (unsigned int)) + +struct visible _notmuch_threads { + 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; }; +/* We need this in the message functions so forward declare. */ +static notmuch_bool_t +_notmuch_doc_id_set_init (void *ctx, + notmuch_doc_id_set_t *doc_ids, + GArray *arr); + notmuch_query_t * notmuch_query_create (notmuch_database_t *notmuch, const char *query_string) @@ -63,36 +84,114 @@ notmuch_query_create (notmuch_database_t *notmuch, query->sort = NOTMUCH_SORT_NEWEST_FIRST; + query->exclude_terms = _notmuch_string_list_create (query); + + query->omit_excluded_messages = FALSE; + return query; } +const char * +notmuch_query_get_query_string (notmuch_query_t *query) +{ + return query->query_string; +} + +void +notmuch_query_set_omit_excluded_messages (notmuch_query_t *query, notmuch_bool_t omit) +{ + query->omit_excluded_messages = omit; +} + 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; +} + +void +notmuch_query_add_tag_exclude (notmuch_query_t *query, const char *tag) +{ + char *term = talloc_asprintf (query, "%s%s", _find_prefix ("tag"), tag); + _notmuch_string_list_append (query->exclude_terms, term); +} + +/* 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; +} + +/* Return a query that matches messages with the excluded tags + * registered with query. Any tags that explicitly appear in xquery + * will not be excluded, and will be removed from the list of exclude + * tags. The caller of this function has to combine the returned + * query appropriately.*/ +static Xapian::Query +_notmuch_exclude_tags (notmuch_query_t *query, Xapian::Query xquery) +{ + Xapian::Query exclude_query = Xapian::Query::MatchNothing; + + for (notmuch_string_node_t *term = query->exclude_terms->head; term; + term = term->next) { + Xapian::TermIterator it = xquery.get_terms_begin (); + Xapian::TermIterator end = xquery.get_terms_end (); + for (; it != end; it++) { + if ((*it).compare (term->string) == 0) + break; + } + if (it == end) + exclude_query = Xapian::Query (Xapian::Query::OP_OR, + exclude_query, Xapian::Query (term->string)); + else + term->string = talloc_strdup (query, ""); + } + return exclude_query; +} + 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"), "mail")); - Xapian::Query string_query, final_query; + Xapian::Query string_query, final_query, exclude_query; Xapian::MSet mset; + Xapian::MSetIterator iterator; unsigned int flags = (Xapian::QueryParser::FLAG_BOOLEAN | Xapian::QueryParser::FLAG_PHRASE | Xapian::QueryParser::FLAG_LOVEHATE | @@ -100,7 +199,9 @@ notmuch_query_search_messages (notmuch_query_t *query, 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-> @@ -108,6 +209,37 @@ notmuch_query_search_messages (notmuch_query_t *query, final_query = Xapian::Query (Xapian::Query::OP_AND, mail_query, string_query); } + messages->base.excluded_doc_ids = NULL; + + if (query->exclude_terms) { + exclude_query = _notmuch_exclude_tags (query, final_query); + exclude_query = Xapian::Query (Xapian::Query::OP_AND, + exclude_query, final_query); + + if (query->omit_excluded_messages) + final_query = Xapian::Query (Xapian::Query::OP_AND_NOT, + final_query, exclude_query); + else { + enquire.set_weighting_scheme (Xapian::BoolWeight()); + enquire.set_query (exclude_query); + + mset = enquire.get_mset (0, notmuch->xapian_db->get_doccount ()); + + GArray *excluded_doc_ids = g_array_new (FALSE, FALSE, sizeof (unsigned int)); + + for (iterator = mset.begin (); iterator != mset.end (); iterator++) { + unsigned int doc_id = *iterator; + g_array_append_val (excluded_doc_ids, doc_id); + } + messages->base.excluded_doc_ids = talloc (messages, _notmuch_doc_id_set); + _notmuch_doc_id_set_init (query, messages->base.excluded_doc_ids, + excluded_doc_ids); + g_array_unref (excluded_doc_ids); + } + } + + + enquire.set_weighting_scheme (Xapian::BoolWeight()); switch (query->sort) { case NOTMUCH_SORT_OLDEST_FIRST: @@ -119,6 +251,8 @@ notmuch_query_search_messages (notmuch_query_t *query, case NOTMUCH_SORT_MESSAGE_ID: enquire.set_sort_by_value (NOTMUCH_VALUE_MESSAGE_ID, FALSE); break; + case NOTMUCH_SORT_UNSORTED: + break; } #if DEBUG_QUERY @@ -127,33 +261,129 @@ notmuch_query_search_messages (notmuch_query_t *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; - } + mset = enquire.get_mset (0, notmuch->xapian_db->get_doccount ()); - _notmuch_message_list_add_message (message_list, message); - } + 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"); + } + + if (messages->excluded_doc_ids && + _notmuch_doc_id_set_contains (messages->excluded_doc_ids, doc_id)) + notmuch_message_set_flag (message, NOTMUCH_MESSAGE_FLAG_EXCLUDED, TRUE); + + 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 max = 0; + unsigned int *bitmap; + + for (unsigned int i = 0; i < arr->len; i++) + max = MAX(max, g_array_index (arr, unsigned int, i)); + bitmap = talloc_zero_array (ctx, unsigned int, 1 + max / sizeof (*bitmap)); + + if (bitmap == NULL) + return FALSE; + + doc_ids->bitmap = bitmap; + doc_ids->bound = max + 1; + + 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 _notmuch_messages_create (message_list); + 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 @@ -163,84 +393,48 @@ notmuch_query_search_messages (notmuch_query_t *query, 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; 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_seen++; - } + threads->query = query; - 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); + 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)) { + talloc_free (threads); + return NULL; } - g_hash_table_unref (seen); - return threads; } @@ -251,25 +445,43 @@ notmuch_query_destroy (notmuch_query_t *query) } 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 @@ -277,3 +489,106 @@ notmuch_threads_destroy (notmuch_threads_t *threads) { 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, exclude_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); + } + + exclude_query = _notmuch_exclude_tags (query, final_query); + + final_query = Xapian::Query (Xapian::Query::OP_AND_NOT, + final_query, exclude_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; +} + +unsigned +notmuch_query_count_threads (notmuch_query_t *query) +{ + notmuch_messages_t *messages; + GHashTable *hash; + unsigned int count; + notmuch_sort_t sort; + + sort = query->sort; + query->sort = NOTMUCH_SORT_UNSORTED; + messages = notmuch_query_search_messages (query); + query->sort = sort; + if (messages == NULL) + return 0; + + hash = g_hash_table_new_full (g_str_hash, g_str_equal, NULL, NULL); + if (hash == NULL) { + talloc_free (messages); + return 0; + } + + while (notmuch_messages_valid (messages)) { + notmuch_message_t *message = notmuch_messages_get (messages); + const char *thread_id = notmuch_message_get_thread_id (message); + char *thread_id_copy = talloc_strdup (messages, thread_id); + if (unlikely (thread_id_copy == NULL)) { + notmuch_message_destroy (message); + count = 0; + goto DONE; + } + g_hash_table_insert (hash, thread_id_copy, NULL); + notmuch_message_destroy (message); + notmuch_messages_move_to_next (messages); + } + + count = g_hash_table_size (hash); + + DONE: + g_hash_table_unref (hash); + talloc_free (messages); + + return count; +}