X-Git-Url: https://git.notmuchmail.org/git?p=notmuch;a=blobdiff_plain;f=message.cc;h=6b6141f33fa4dbbd423866c77b1e9eb7c4dfaf6a;hp=7a6c01d2b7ace590b9fde3a93b90d65c8f934a06;hb=ae0bd3f503c8815affa733f48498bb77d023680b;hpb=7b227a6bf7eb409b4353adc430b2545166e0c4cd diff --git a/message.cc b/message.cc index 7a6c01d2..6b6141f3 100644 --- a/message.cc +++ b/message.cc @@ -27,23 +27,12 @@ struct _notmuch_message { notmuch_database_t *notmuch; Xapian::docid doc_id; char *message_id; + char *thread_id; char *filename; + notmuch_message_file_t *message_file; Xapian::Document doc; }; -typedef struct _notmuch_terms { - char prefix_char; - Xapian::TermIterator iterator; - Xapian::TermIterator iterator_end; -} notmuch_terms_t; - -struct _notmuch_tags { - notmuch_terms_t terms; -}; - -struct _notmuch_thread_ids { - notmuch_terms_t terms; -}; /* "128 bits of thread-id ought to be enough for anybody" */ #define NOTMUCH_THREAD_ID_BITS 128 @@ -80,13 +69,15 @@ _notmuch_message_destructor (notmuch_message_t *message) * caller *is* responsible for calling notmuch_message_destroy. * * If no document exists in the database with document ID of 'doc_id' - * then this function returns NULL and sets *status to + * then this function returns NULL and optionally sets *status to * NOTMUCH_PRIVATE_STATUS_NO_DOCUMENT_FOUND. * * This function can also fail to due lack of available memory, * returning NULL and optionally setting *status to - * NOTMUCH_PRIVATE_STATUS_OUT_OF_MEMORY. Caller can pass NULL - * for status if uninterested in distinguishing these two cases. + * NOTMUCH_PRIVATE_STATUS_OUT_OF_MEMORY. + * + * The caller can pass NULL for status if uninterested in + * distinguishing these two cases. */ notmuch_message_t * _notmuch_message_create (const void *talloc_owner, @@ -108,8 +99,12 @@ _notmuch_message_create (const void *talloc_owner, message->notmuch = notmuch; message->doc_id = doc_id; - message->message_id = NULL; /* lazily created */ - message->filename = NULL; /* lazily created */ + + /* Each of these will be lazily created as needed. */ + message->message_id = NULL; + message->thread_id = NULL; + message->filename = NULL; + message->message_file = NULL; /* This is C++'s creepy "placement new", which is really just an * ugly way to call a constructor for a pre-allocated object. So @@ -195,12 +190,8 @@ _notmuch_message_create_for_message_id (const void *talloc_owner, message = _notmuch_message_create (talloc_owner, notmuch, doc_id, &private_status); - if (private_status >= (notmuch_private_status_t) NOTMUCH_STATUS_LAST_STATUS) - { - INTERNAL_ERROR ("Failed to find document immediately after adding it.\n"); - } - - *status = (notmuch_status_t) private_status; + *status = COERCE_STATUS (private_status, + "Failed to find dcocument after inserting it."); return message; } @@ -216,22 +207,85 @@ notmuch_message_get_message_id (notmuch_message_t *message) i = message->doc.termlist_begin (); i.skip_to (_find_prefix ("id")); - if (i == message->doc.termlist_end ()) { + if (i == message->doc.termlist_end ()) INTERNAL_ERROR ("Message with document ID of %d has no message ID.\n", message->doc_id); - } message->message_id = talloc_strdup (message, (*i).c_str () + 1); + +#if DEBUG_DATABASE_SANITY + i++; + + if (i != message->doc.termlist_end () && + strncmp ((*i).c_str (), _find_prefix ("id"), + strlen (_find_prefix ("id"))) == 0) + { + INTERNAL_ERROR ("Mail (doc_id: %d) has duplicate message IDs", + message->doc_id); + } +#endif + return message->message_id; } +const char * +_notmuch_message_get_subject (notmuch_message_t *message) +{ + if (! message->message_file) { + notmuch_message_file_t *message_file; + const char *filename; + + filename = notmuch_message_get_filename (message); + if (unlikely (filename == NULL)) + return NULL; + + message_file = _notmuch_message_file_open_ctx (message, filename); + if (unlikely (message_file == NULL)) + return NULL; + + message->message_file = message_file; + } + + return notmuch_message_file_get_header (message->message_file, + "subject"); +} + +const char * +notmuch_message_get_thread_id (notmuch_message_t *message) +{ + Xapian::TermIterator i; + + if (message->thread_id) + return message->thread_id; + + i = message->doc.termlist_begin (); + i.skip_to (_find_prefix ("thread")); + + if (i == message->doc.termlist_end ()) + INTERNAL_ERROR ("Message with document ID of %d has no thread ID.\n", + message->doc_id); + + message->thread_id = talloc_strdup (message, (*i).c_str () + 1); + +#if DEBUG_DATABASE_SANITY + i++; + + if (i != message->doc.termlist_end () && + strncmp ((*i).c_str (), _find_prefix ("thread"), + strlen (_find_prefix ("thread"))) == 0) + { + INTERNAL_ERROR ("Message with document ID of %d has duplicate thread IDs.\n", + message->doc_id); + } +#endif + + return message->thread_id; +} + /* Set the filename for 'message' to 'filename'. * - * XXX: We should still figure out what we want to do for multiple - * files with identical message IDs. We will probably want to store a - * list of filenames here, (so that this will be "add_filename" - * instead of "set_filename"). Which would make this very similar to - * add_thread_ids. + * XXX: We should still figure out if we think it's important to store + * multiple filenames for email messages with identical message IDs. * * This change will not be reflected in the database until the next * call to _notmuch_message_set_sync. */ @@ -258,71 +312,41 @@ notmuch_message_get_filename (notmuch_message_t *message) return message->filename; } -/* 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_terms_destructor (notmuch_terms_t *terms) -{ - terms->iterator.~TermIterator (); - terms->iterator_end.~TermIterator (); - - return 0; -} - -notmuch_terms_t * -_notmuch_terms_create (void *ctx, - Xapian::Document doc, - const char *prefix_name) +notmuch_tags_t * +notmuch_message_get_tags (notmuch_message_t *message) { - notmuch_terms_t *terms; - const char *prefix = _find_prefix (prefix_name); + const char *prefix = _find_prefix ("tag"); + Xapian::TermIterator i, end; + notmuch_tags_t *tags; + std::string tag; - /* Currently, notmuch_terms_t is written with the assumption that - * any prefix its derivatives use will be only a single - * character. */ + /* Currently this iteration is written with the assumption that + * "tag" has a single-character prefix. */ assert (strlen (prefix) == 1); - terms = talloc (ctx, notmuch_terms_t); - if (unlikely (terms == NULL)) + tags = _notmuch_tags_create (message); + if (unlikely (tags == NULL)) return NULL; - terms->prefix_char = *prefix; - new (&terms->iterator) Xapian::TermIterator; - new (&terms->iterator_end) Xapian::TermIterator; + i = message->doc.termlist_begin (); + end = message->doc.termlist_end (); - talloc_set_destructor (terms, _notmuch_terms_destructor); + i.skip_to (prefix); - terms->iterator = doc.termlist_begin (); - terms->iterator.skip_to (prefix); - terms->iterator_end = doc.termlist_end (); + while (1) { + tag = *i; - return terms; -} + if (tag.empty () || tag[0] != *prefix) + break; -/* The assertion is to ensure that 'type' is a derivative of - * notmuch_terms_t in that it contains a notmuch_terms_t as its first - * member. We do this by name of 'terms' as opposed to type, because - * that's as clever as I've been so far. */ -#define _notmuch_terms_create_type(ctx, doc, prefix_name, type) \ - (COMPILE_TIME_ASSERT(offsetof(type, terms) == 0), \ - (type *) _notmuch_terms_create (ctx, doc, prefix_name)) + _notmuch_tags_add_tag (tags, tag.c_str () + 1); -notmuch_tags_t * -notmuch_message_get_tags (notmuch_message_t *message) -{ - return _notmuch_terms_create_type (message, message->doc, "tag", - notmuch_tags_t); -} + i++; + } -notmuch_thread_ids_t * -notmuch_message_get_thread_ids (notmuch_message_t *message) -{ - return _notmuch_terms_create_type (message, message->doc, "thread", - notmuch_thread_ids_t); + _notmuch_tags_prepare_iterator (tags); + + return tags; } void @@ -337,13 +361,6 @@ _notmuch_message_set_date (notmuch_message_t *message, Xapian::sortable_serialise (time_value)); } -void -_notmuch_message_add_thread_id (notmuch_message_t *message, - const char *thread_id) -{ - _notmuch_message_add_term (message, "thread", thread_id); -} - static void thread_id_generate (thread_id_t *thread_id) { @@ -502,84 +519,3 @@ notmuch_message_destroy (notmuch_message_t *message) { talloc_free (message); } - -notmuch_bool_t -_notmuch_terms_has_more (notmuch_terms_t *terms) -{ - std::string s; - - if (terms->iterator == terms->iterator_end) - return FALSE; - - s = *terms->iterator; - if (! s.empty () && s[0] == terms->prefix_char) - return TRUE; - else - return FALSE; -} - -const char * -_notmuch_terms_get (notmuch_terms_t *terms) -{ - return talloc_strdup (terms, (*terms->iterator).c_str () + 1); -} - -void -_notmuch_terms_advance (notmuch_terms_t *terms) -{ - terms->iterator++; -} - -void -_notmuch_terms_destroy (notmuch_terms_t *terms) -{ - talloc_free (terms); -} - -notmuch_bool_t -notmuch_tags_has_more (notmuch_tags_t *tags) -{ - return _notmuch_terms_has_more (&tags->terms); -} - -const char * -notmuch_tags_get (notmuch_tags_t *tags) -{ - return _notmuch_terms_get (&tags->terms); -} - -void -notmuch_tags_advance (notmuch_tags_t *tags) -{ - return _notmuch_terms_advance (&tags->terms); -} - -void -notmuch_tags_destroy (notmuch_tags_t *tags) -{ - return _notmuch_terms_destroy (&tags->terms); -} - -notmuch_bool_t -notmuch_thread_ids_has_more (notmuch_thread_ids_t *thread_ids) -{ - return _notmuch_terms_has_more (&thread_ids->terms); -} - -const char * -notmuch_thread_ids_get (notmuch_thread_ids_t *thread_ids) -{ - return _notmuch_terms_get (&thread_ids->terms); -} - -void -notmuch_thread_ids_advance (notmuch_thread_ids_t *thread_ids) -{ - return _notmuch_terms_advance (&thread_ids->terms); -} - -void -notmuch_thread_ids_destroy (notmuch_thread_ids_t *thread_ids) -{ - return _notmuch_terms_destroy (&thread_ids->terms); -}