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 #include <gmime/gmime.h>
28 struct visible _notmuch_message {
29 notmuch_database_t *notmuch;
35 notmuch_string_list_t *tag_list;
36 notmuch_string_list_t *filename_term_list;
37 notmuch_string_list_t *filename_list;
39 notmuch_message_file_t *message_file;
40 notmuch_message_list_t *replies;
44 Xapian::termcount termpos;
47 #define ARRAY_SIZE(arr) (sizeof (arr) / sizeof (arr[0]))
49 struct maildir_flag_tag {
55 /* ASCII ordered table of Maildir flags and associated tags */
56 static struct maildir_flag_tag flag2tag[] = {
57 { 'D', "draft", false},
58 { 'F', "flagged", false},
59 { 'P', "passed", false},
60 { 'R', "replied", false},
61 { 'S', "unread", true }
64 /* We end up having to call the destructor explicitly because we had
65 * to use "placement new" in order to initialize C++ objects within a
66 * block that we allocated with talloc. So C++ is making talloc
67 * slightly less simple to use, (we wouldn't need
68 * talloc_set_destructor at all otherwise).
71 _notmuch_message_destructor (notmuch_message_t *message)
73 message->doc.~Document ();
78 static notmuch_message_t *
79 _notmuch_message_create_for_document (const void *talloc_owner,
80 notmuch_database_t *notmuch,
83 notmuch_private_status_t *status)
85 notmuch_message_t *message;
88 *status = NOTMUCH_PRIVATE_STATUS_SUCCESS;
90 message = talloc (talloc_owner, notmuch_message_t);
91 if (unlikely (message == NULL)) {
93 *status = NOTMUCH_PRIVATE_STATUS_OUT_OF_MEMORY;
97 message->notmuch = notmuch;
98 message->doc_id = doc_id;
103 /* Each of these will be lazily created as needed. */
104 message->message_id = NULL;
105 message->thread_id = NULL;
106 message->in_reply_to = NULL;
107 message->tag_list = NULL;
108 message->filename_term_list = NULL;
109 message->filename_list = NULL;
110 message->message_file = NULL;
111 message->author = NULL;
113 message->replies = _notmuch_message_list_create (message);
114 if (unlikely (message->replies == NULL)) {
116 *status = NOTMUCH_PRIVATE_STATUS_OUT_OF_MEMORY;
120 /* This is C++'s creepy "placement new", which is really just an
121 * ugly way to call a constructor for a pre-allocated object. So
122 * it's really not an error to not be checking for OUT_OF_MEMORY
123 * here, since this "new" isn't actually allocating memory. This
124 * is language-design comedy of the wrong kind. */
126 new (&message->doc) Xapian::Document;
128 talloc_set_destructor (message, _notmuch_message_destructor);
131 message->termpos = 0;
136 /* Create a new notmuch_message_t object for an existing document in
139 * Here, 'talloc owner' is an optional talloc context to which the new
140 * message will belong. This allows for the caller to not bother
141 * calling notmuch_message_destroy on the message, and know that all
142 * memory will be reclaimed when 'talloc_owner' is freed. The caller
143 * still can call notmuch_message_destroy when finished with the
144 * message if desired.
146 * The 'talloc_owner' argument can also be NULL, in which case the
147 * caller *is* responsible for calling notmuch_message_destroy.
149 * If no document exists in the database with document ID of 'doc_id'
150 * then this function returns NULL and optionally sets *status to
151 * NOTMUCH_PRIVATE_STATUS_NO_DOCUMENT_FOUND.
153 * This function can also fail to due lack of available memory,
154 * returning NULL and optionally setting *status to
155 * NOTMUCH_PRIVATE_STATUS_OUT_OF_MEMORY.
157 * The caller can pass NULL for status if uninterested in
158 * distinguishing these two cases.
161 _notmuch_message_create (const void *talloc_owner,
162 notmuch_database_t *notmuch,
164 notmuch_private_status_t *status)
166 Xapian::Document doc;
169 doc = notmuch->xapian_db->get_document (doc_id);
170 } catch (const Xapian::DocNotFoundError &error) {
172 *status = NOTMUCH_PRIVATE_STATUS_NO_DOCUMENT_FOUND;
176 return _notmuch_message_create_for_document (talloc_owner, notmuch,
177 doc_id, doc, status);
180 /* Create a new notmuch_message_t object for a specific message ID,
181 * (which may or may not already exist in the database).
183 * The 'notmuch' database will be the talloc owner of the returned
186 * This function returns a valid notmuch_message_t whether or not
187 * there is already a document in the database with the given message
188 * ID. These two cases can be distinguished by the value of *status:
191 * NOTMUCH_PRIVATE_STATUS_SUCCESS:
193 * There is already a document with message ID 'message_id' in the
194 * database. The returned message can be used to query/modify the
196 * NOTMUCH_PRIVATE_STATUS_NO_DOCUMENT_FOUND:
198 * No document with 'message_id' exists in the database. The
199 * returned message contains a newly created document (not yet
200 * added to the database) and a document ID that is known not to
201 * exist in the database. The caller can modify the message, and a
202 * call to _notmuch_message_sync will add * the document to the
205 * If an error occurs, this function will return NULL and *status
206 * will be set as appropriate. (The status pointer argument must
210 _notmuch_message_create_for_message_id (notmuch_database_t *notmuch,
211 const char *message_id,
212 notmuch_private_status_t *status_ret)
214 notmuch_message_t *message;
215 Xapian::Document doc;
219 *status_ret = NOTMUCH_PRIVATE_STATUS_SUCCESS;
221 message = notmuch_database_find_message (notmuch, message_id);
223 return talloc_steal (notmuch, message);
225 term = talloc_asprintf (NULL, "%s%s",
226 _find_prefix ("id"), message_id);
228 *status_ret = NOTMUCH_PRIVATE_STATUS_OUT_OF_MEMORY;
232 if (notmuch->mode == NOTMUCH_DATABASE_MODE_READ_ONLY)
233 INTERNAL_ERROR ("Failure to ensure database is writable.");
236 doc.add_term (term, 0);
239 doc.add_value (NOTMUCH_VALUE_MESSAGE_ID, message_id);
241 doc_id = _notmuch_database_generate_doc_id (notmuch);
242 } catch (const Xapian::Error &error) {
243 fprintf (stderr, "A Xapian exception occurred creating message: %s\n",
244 error.get_msg().c_str());
245 notmuch->exception_reported = TRUE;
246 *status_ret = NOTMUCH_PRIVATE_STATUS_XAPIAN_EXCEPTION;
250 message = _notmuch_message_create_for_document (notmuch, notmuch,
251 doc_id, doc, status_ret);
253 /* We want to inform the caller that we had to create a new
255 if (*status_ret == NOTMUCH_PRIVATE_STATUS_SUCCESS)
256 *status_ret = NOTMUCH_PRIVATE_STATUS_NO_DOCUMENT_FOUND;
262 _notmuch_message_get_term (notmuch_message_t *message,
263 Xapian::TermIterator &i, Xapian::TermIterator &end,
266 int prefix_len = strlen (prefix);
267 const char *term = NULL;
273 term = (*i).c_str ();
275 if (!term || strncmp (term, prefix, prefix_len))
278 value = talloc_strdup (message, term + prefix_len);
280 #if DEBUG_DATABASE_SANITY
283 if (i != end && strncmp ((*i).c_str (), prefix, prefix_len) == 0) {
284 INTERNAL_ERROR ("Mail (doc_id: %d) has duplicate %s terms: %s and %s\n",
285 message->doc_id, prefix, value,
286 (*i).c_str () + prefix_len);
294 _notmuch_message_ensure_metadata (notmuch_message_t *message)
296 Xapian::TermIterator i, end;
297 const char *thread_prefix = _find_prefix ("thread"),
298 *tag_prefix = _find_prefix ("tag"),
299 *id_prefix = _find_prefix ("id"),
300 *filename_prefix = _find_prefix ("file-direntry"),
301 *replyto_prefix = _find_prefix ("replyto");
303 /* We do this all in a single pass because Xapian decompresses the
304 * term list every time you iterate over it. Thus, while this is
305 * slightly more costly than looking up individual fields if only
306 * one field of the message object is actually used, it's a huge
307 * win as more fields are used. */
309 i = message->doc.termlist_begin ();
310 end = message->doc.termlist_end ();
313 if (!message->thread_id)
315 _notmuch_message_get_term (message, i, end, thread_prefix);
318 assert (strcmp (thread_prefix, tag_prefix) < 0);
319 if (!message->tag_list) {
321 _notmuch_database_get_terms_with_prefix (message, i, end,
323 _notmuch_string_list_sort (message->tag_list);
327 assert (strcmp (tag_prefix, id_prefix) < 0);
328 if (!message->message_id)
329 message->message_id =
330 _notmuch_message_get_term (message, i, end, id_prefix);
332 /* Get filename list. Here we get only the terms. We lazily
333 * expand them to full file names when needed in
334 * _notmuch_message_ensure_filename_list. */
335 assert (strcmp (id_prefix, filename_prefix) < 0);
336 if (!message->filename_term_list && !message->filename_list)
337 message->filename_term_list =
338 _notmuch_database_get_terms_with_prefix (message, i, end,
342 assert (strcmp (filename_prefix, replyto_prefix) < 0);
343 if (!message->in_reply_to)
344 message->in_reply_to =
345 _notmuch_message_get_term (message, i, end, replyto_prefix);
346 /* It's perfectly valid for a message to have no In-Reply-To
347 * header. For these cases, we return an empty string. */
348 if (!message->in_reply_to)
349 message->in_reply_to = talloc_strdup (message, "");
353 _notmuch_message_invalidate_metadata (notmuch_message_t *message,
354 const char *prefix_name)
356 if (strcmp ("thread", prefix_name) == 0) {
357 talloc_free (message->thread_id);
358 message->thread_id = NULL;
361 if (strcmp ("tag", prefix_name) == 0) {
362 talloc_unlink (message, message->tag_list);
363 message->tag_list = NULL;
366 if (strcmp ("file-direntry", prefix_name) == 0) {
367 talloc_free (message->filename_term_list);
368 talloc_free (message->filename_list);
369 message->filename_term_list = message->filename_list = NULL;
372 if (strcmp ("replyto", prefix_name) == 0) {
373 talloc_free (message->in_reply_to);
374 message->in_reply_to = NULL;
379 _notmuch_message_get_doc_id (notmuch_message_t *message)
381 return message->doc_id;
385 notmuch_message_get_message_id (notmuch_message_t *message)
387 if (!message->message_id)
388 _notmuch_message_ensure_metadata (message);
389 if (!message->message_id)
390 INTERNAL_ERROR ("Message with document ID of %u has no message ID.\n",
392 return message->message_id;
396 _notmuch_message_ensure_message_file (notmuch_message_t *message)
398 const char *filename;
400 if (message->message_file)
403 filename = notmuch_message_get_filename (message);
404 if (unlikely (filename == NULL))
407 message->message_file = _notmuch_message_file_open_ctx (message, filename);
411 notmuch_message_get_header (notmuch_message_t *message, const char *header)
413 _notmuch_message_ensure_message_file (message);
414 if (message->message_file == NULL)
417 return notmuch_message_file_get_header (message->message_file, header);
420 /* Return the message ID from the In-Reply-To header of 'message'.
422 * Returns an empty string ("") if 'message' has no In-Reply-To
425 * Returns NULL if any error occurs.
428 _notmuch_message_get_in_reply_to (notmuch_message_t *message)
430 if (!message->in_reply_to)
431 _notmuch_message_ensure_metadata (message);
432 return message->in_reply_to;
436 notmuch_message_get_thread_id (notmuch_message_t *message)
438 if (!message->thread_id)
439 _notmuch_message_ensure_metadata (message);
440 if (!message->thread_id)
441 INTERNAL_ERROR ("Message with document ID of %u has no thread ID.\n",
443 return message->thread_id;
447 _notmuch_message_add_reply (notmuch_message_t *message,
448 notmuch_message_node_t *reply)
450 _notmuch_message_list_append (message->replies, reply);
454 notmuch_message_get_replies (notmuch_message_t *message)
456 return _notmuch_messages_create (message->replies);
459 /* Add an additional 'filename' for 'message'.
461 * This change will not be reflected in the database until the next
462 * call to _notmuch_message_sync. */
464 _notmuch_message_add_filename (notmuch_message_t *message,
465 const char *filename)
467 const char *relative, *directory;
468 notmuch_status_t status;
469 void *local = talloc_new (message);
472 if (filename == NULL)
473 INTERNAL_ERROR ("Message filename cannot be NULL.");
475 relative = _notmuch_database_relative_path (message->notmuch, filename);
477 status = _notmuch_database_split_path (local, relative, &directory, NULL);
481 status = _notmuch_database_filename_to_direntry (local,
483 filename, &direntry);
487 /* New file-direntry allows navigating to this message with
488 * notmuch_directory_get_child_files() . */
489 _notmuch_message_add_term (message, "file-direntry", direntry);
491 /* New terms allow user to search with folder: specification. */
492 _notmuch_message_gen_terms (message, "folder", directory);
496 return NOTMUCH_STATUS_SUCCESS;
499 /* Remove a particular 'filename' from 'message'.
501 * This change will not be reflected in the database until the next
502 * call to _notmuch_message_sync.
504 * Note: This function does not remove a document from the database,
505 * even if the specified filename is the only filename for this
506 * message. For that functionality, see
507 * _notmuch_database_remove_message. */
509 _notmuch_message_remove_filename (notmuch_message_t *message,
510 const char *filename)
512 const char *direntry_prefix = _find_prefix ("file-direntry");
513 int direntry_prefix_len = strlen (direntry_prefix);
514 const char *folder_prefix = _find_prefix ("folder");
515 int folder_prefix_len = strlen (folder_prefix);
516 void *local = talloc_new (message);
518 notmuch_private_status_t private_status;
519 notmuch_status_t status;
520 Xapian::TermIterator i, last;
522 status = _notmuch_database_filename_to_direntry (local, message->notmuch,
523 filename, &direntry);
527 /* Unlink this file from its parent directory. */
528 private_status = _notmuch_message_remove_term (message,
529 "file-direntry", direntry);
530 status = COERCE_STATUS (private_status,
531 "Unexpected error from _notmuch_message_remove_term");
533 /* Re-synchronize "folder:" terms for this message. This requires
534 * first removing all "folder:" terms, then adding back terms for
535 * all remaining filenames of the message. */
537 i = message->doc.termlist_begin ();
538 i.skip_to (folder_prefix);
540 /* Terminate loop when no terms remain with desired prefix. */
541 if (i == message->doc.termlist_end () ||
542 strncmp ((*i).c_str (), folder_prefix, folder_prefix_len))
548 message->doc.remove_term ((*i));
549 } catch (const Xapian::InvalidArgumentError) {
550 /* Ignore failure to remove non-existent term. */
554 i = message->doc.termlist_begin ();
555 i.skip_to (direntry_prefix);
557 for (; i != message->doc.termlist_end (); i++) {
558 unsigned int directory_id;
559 const char *direntry, *directory;
562 /* Terminate loop at first term without desired prefix. */
563 if (strncmp ((*i).c_str (), direntry_prefix, direntry_prefix_len))
566 direntry = (*i).c_str ();
567 direntry += direntry_prefix_len;
569 directory_id = strtol (direntry, &colon, 10);
571 if (colon == NULL || *colon != ':')
572 INTERNAL_ERROR ("malformed direntry");
574 directory = _notmuch_database_get_directory_path (local,
577 if (strlen (directory))
578 _notmuch_message_gen_terms (message, "folder", directory);
587 _notmuch_message_talloc_copy_data (notmuch_message_t *message)
589 return talloc_strdup (message, message->doc.get_data ().c_str ());
593 _notmuch_message_clear_data (notmuch_message_t *message)
595 message->doc.set_data ("");
599 _notmuch_message_ensure_filename_list (notmuch_message_t *message)
601 notmuch_string_node_t *node;
603 if (message->filename_list)
606 if (!message->filename_term_list)
607 _notmuch_message_ensure_metadata (message);
609 message->filename_list = _notmuch_string_list_create (message);
610 node = message->filename_term_list->head;
613 /* A message document created by an old version of notmuch
614 * (prior to rename support) will have the filename in the
615 * data of the document rather than as a file-direntry term.
617 * It would be nice to do the upgrade of the document directly
618 * here, but the database is likely open in read-only mode. */
621 data = message->doc.get_data ().c_str ();
624 INTERNAL_ERROR ("message with no filename");
626 _notmuch_string_list_append (message->filename_list, data);
631 for (; node; node = node->next) {
632 void *local = talloc_new (message);
633 const char *db_path, *directory, *basename, *filename;
634 char *colon, *direntry = NULL;
635 unsigned int directory_id;
637 direntry = node->string;
639 directory_id = strtol (direntry, &colon, 10);
641 if (colon == NULL || *colon != ':')
642 INTERNAL_ERROR ("malformed direntry");
644 basename = colon + 1;
648 db_path = notmuch_database_get_path (message->notmuch);
650 directory = _notmuch_database_get_directory_path (local,
654 if (strlen (directory))
655 filename = talloc_asprintf (message, "%s/%s/%s",
656 db_path, directory, basename);
658 filename = talloc_asprintf (message, "%s/%s",
661 _notmuch_string_list_append (message->filename_list, filename);
666 talloc_free (message->filename_term_list);
667 message->filename_term_list = NULL;
671 notmuch_message_get_filename (notmuch_message_t *message)
673 _notmuch_message_ensure_filename_list (message);
675 if (message->filename_list == NULL)
678 if (message->filename_list->head == NULL ||
679 message->filename_list->head->string == NULL)
681 INTERNAL_ERROR ("message with no filename");
684 return message->filename_list->head->string;
687 notmuch_filenames_t *
688 notmuch_message_get_filenames (notmuch_message_t *message)
690 _notmuch_message_ensure_filename_list (message);
692 return _notmuch_filenames_create (message, message->filename_list);
696 notmuch_message_get_flag (notmuch_message_t *message,
697 notmuch_message_flag_t flag)
699 return message->flags & (1 << flag);
703 notmuch_message_set_flag (notmuch_message_t *message,
704 notmuch_message_flag_t flag, notmuch_bool_t enable)
707 message->flags |= (1 << flag);
709 message->flags &= ~(1 << flag);
713 notmuch_message_get_date (notmuch_message_t *message)
718 value = message->doc.get_value (NOTMUCH_VALUE_TIMESTAMP);
719 } catch (Xapian::Error &error) {
720 INTERNAL_ERROR ("Failed to read timestamp value from document.");
724 return Xapian::sortable_unserialise (value);
728 notmuch_message_get_tags (notmuch_message_t *message)
730 notmuch_tags_t *tags;
732 if (!message->tag_list)
733 _notmuch_message_ensure_metadata (message);
735 tags = _notmuch_tags_create (message, message->tag_list);
736 /* _notmuch_tags_create steals the reference to the tag_list, but
737 * in this case it's still used by the message, so we add an
738 * *additional* talloc reference to the list. As a result, it's
739 * possible to modify the message tags (which talloc_unlink's the
740 * current list from the message) while still iterating because
741 * the iterator will keep the current list alive. */
742 talloc_reference (message, message->tag_list);
747 notmuch_message_get_author (notmuch_message_t *message)
749 return message->author;
753 notmuch_message_set_author (notmuch_message_t *message,
757 talloc_free(message->author);
758 message->author = talloc_strdup(message, author);
763 _notmuch_message_set_date (notmuch_message_t *message,
768 /* GMime really doesn't want to see a NULL date, so protect its
770 if (date == NULL || *date == '\0')
773 time_value = g_mime_utils_header_decode_date (date, NULL);
775 message->doc.add_value (NOTMUCH_VALUE_TIMESTAMP,
776 Xapian::sortable_serialise (time_value));
779 /* Synchronize changes made to message->doc out into the database. */
781 _notmuch_message_sync (notmuch_message_t *message)
783 Xapian::WritableDatabase *db;
785 if (message->notmuch->mode == NOTMUCH_DATABASE_MODE_READ_ONLY)
788 db = static_cast <Xapian::WritableDatabase *> (message->notmuch->xapian_db);
789 db->replace_document (message->doc_id, message->doc);
792 /* Ensure that 'message' is not holding any file object open. Future
793 * calls to various functions will still automatically open the
794 * message file as needed.
797 _notmuch_message_close (notmuch_message_t *message)
799 if (message->message_file) {
800 notmuch_message_file_close (message->message_file);
801 message->message_file = NULL;
805 /* Add a name:value term to 'message', (the actual term will be
806 * encoded by prefixing the value with a short prefix). See
807 * NORMAL_PREFIX and BOOLEAN_PREFIX arrays for the mapping of term
808 * names to prefix values.
810 * This change will not be reflected in the database until the next
811 * call to _notmuch_message_sync. */
812 notmuch_private_status_t
813 _notmuch_message_add_term (notmuch_message_t *message,
814 const char *prefix_name,
821 return NOTMUCH_PRIVATE_STATUS_NULL_POINTER;
823 term = talloc_asprintf (message, "%s%s",
824 _find_prefix (prefix_name), value);
826 if (strlen (term) > NOTMUCH_TERM_MAX)
827 return NOTMUCH_PRIVATE_STATUS_TERM_TOO_LONG;
829 message->doc.add_term (term, 0);
833 _notmuch_message_invalidate_metadata (message, prefix_name);
835 return NOTMUCH_PRIVATE_STATUS_SUCCESS;
838 /* Parse 'text' and add a term to 'message' for each parsed word. Each
839 * term will be added both prefixed (if prefix_name is not NULL) and
840 * also unprefixed). */
841 notmuch_private_status_t
842 _notmuch_message_gen_terms (notmuch_message_t *message,
843 const char *prefix_name,
846 Xapian::TermGenerator *term_gen = message->notmuch->term_gen;
849 return NOTMUCH_PRIVATE_STATUS_NULL_POINTER;
851 term_gen->set_document (message->doc);
852 term_gen->set_termpos (message->termpos);
855 const char *prefix = _find_prefix (prefix_name);
857 term_gen->index_text (text, 1, prefix);
858 message->termpos = term_gen->get_termpos ();
861 term_gen->index_text (text);
863 return NOTMUCH_PRIVATE_STATUS_SUCCESS;
866 /* Remove a name:value term from 'message', (the actual term will be
867 * encoded by prefixing the value with a short prefix). See
868 * NORMAL_PREFIX and BOOLEAN_PREFIX arrays for the mapping of term
869 * names to prefix values.
871 * This change will not be reflected in the database until the next
872 * call to _notmuch_message_sync. */
873 notmuch_private_status_t
874 _notmuch_message_remove_term (notmuch_message_t *message,
875 const char *prefix_name,
881 return NOTMUCH_PRIVATE_STATUS_NULL_POINTER;
883 term = talloc_asprintf (message, "%s%s",
884 _find_prefix (prefix_name), value);
886 if (strlen (term) > NOTMUCH_TERM_MAX)
887 return NOTMUCH_PRIVATE_STATUS_TERM_TOO_LONG;
890 message->doc.remove_term (term);
891 } catch (const Xapian::InvalidArgumentError) {
892 /* We'll let the philosopher's try to wrestle with the
893 * question of whether failing to remove that which was not
894 * there in the first place is failure. For us, we'll silently
895 * consider it all good. */
900 _notmuch_message_invalidate_metadata (message, prefix_name);
902 return NOTMUCH_PRIVATE_STATUS_SUCCESS;
906 notmuch_message_add_tag (notmuch_message_t *message, const char *tag)
908 notmuch_private_status_t private_status;
909 notmuch_status_t status;
911 status = _notmuch_database_ensure_writable (message->notmuch);
916 return NOTMUCH_STATUS_NULL_POINTER;
918 if (strlen (tag) > NOTMUCH_TAG_MAX)
919 return NOTMUCH_STATUS_TAG_TOO_LONG;
921 private_status = _notmuch_message_add_term (message, "tag", tag);
922 if (private_status) {
923 INTERNAL_ERROR ("_notmuch_message_add_term return unexpected value: %d\n",
927 if (! message->frozen)
928 _notmuch_message_sync (message);
930 return NOTMUCH_STATUS_SUCCESS;
934 notmuch_message_remove_tag (notmuch_message_t *message, const char *tag)
936 notmuch_private_status_t private_status;
937 notmuch_status_t status;
939 status = _notmuch_database_ensure_writable (message->notmuch);
944 return NOTMUCH_STATUS_NULL_POINTER;
946 if (strlen (tag) > NOTMUCH_TAG_MAX)
947 return NOTMUCH_STATUS_TAG_TOO_LONG;
949 private_status = _notmuch_message_remove_term (message, "tag", tag);
950 if (private_status) {
951 INTERNAL_ERROR ("_notmuch_message_remove_term return unexpected value: %d\n",
955 if (! message->frozen)
956 _notmuch_message_sync (message);
958 return NOTMUCH_STATUS_SUCCESS;
962 notmuch_message_maildir_flags_to_tags (notmuch_message_t *message)
965 notmuch_status_t status;
966 notmuch_filenames_t *filenames;
967 const char *filename;
968 char *combined_flags = talloc_strdup (message, "");
970 int seen_maildir_info = 0;
972 for (filenames = notmuch_message_get_filenames (message);
973 notmuch_filenames_valid (filenames);
974 notmuch_filenames_move_to_next (filenames))
976 filename = notmuch_filenames_get (filenames);
978 flags = strstr (filename, ":2,");
982 seen_maildir_info = 1;
985 combined_flags = talloc_strdup_append (combined_flags, flags);
988 /* If none of the filenames have any maildir info field (not even
989 * an empty info with no flags set) then there's no information to
990 * go on, so do nothing. */
991 if (! seen_maildir_info)
992 return NOTMUCH_STATUS_SUCCESS;
994 status = notmuch_message_freeze (message);
998 for (i = 0; i < ARRAY_SIZE(flag2tag); i++) {
999 if ((strchr (combined_flags, flag2tag[i].flag) != NULL)
1001 flag2tag[i].inverse)
1003 status = notmuch_message_add_tag (message, flag2tag[i].tag);
1005 status = notmuch_message_remove_tag (message, flag2tag[i].tag);
1010 status = notmuch_message_thaw (message);
1012 talloc_free (combined_flags);
1017 /* Is the given filename within a maildir directory?
1019 * Specifically, is the final directory component of 'filename' either
1020 * "cur" or "new". If so, return a pointer to that final directory
1021 * component within 'filename'. If not, return NULL.
1023 * A non-NULL return value is guaranteed to be a valid string pointer
1024 * pointing to the characters "new/" or "cur/", (but not
1028 _filename_is_in_maildir (const char *filename)
1030 const char *slash, *dir = NULL;
1032 /* Find the last '/' separating directory from filename. */
1033 slash = strrchr (filename, '/');
1037 /* Jump back 4 characters to where the previous '/' will be if the
1038 * directory is named "cur" or "new". */
1039 if (slash - filename < 4)
1049 if (STRNCMP_LITERAL (dir, "cur/") == 0 ||
1050 STRNCMP_LITERAL (dir, "new/") == 0)
1058 /* From the set of tags on 'message' and the flag2tag table, compute a
1059 * set of maildir-flag actions to be taken, (flags that should be
1060 * either set or cleared).
1062 * The result is returned as two talloced strings: to_set, and to_clear
1065 _get_maildir_flag_actions (notmuch_message_t *message,
1067 char **to_clear_ret)
1069 char *to_set, *to_clear;
1070 notmuch_tags_t *tags;
1074 to_set = talloc_strdup (message, "");
1075 to_clear = talloc_strdup (message, "");
1077 /* First, find flags for all set tags. */
1078 for (tags = notmuch_message_get_tags (message);
1079 notmuch_tags_valid (tags);
1080 notmuch_tags_move_to_next (tags))
1082 tag = notmuch_tags_get (tags);
1084 for (i = 0; i < ARRAY_SIZE (flag2tag); i++) {
1085 if (strcmp (tag, flag2tag[i].tag) == 0) {
1086 if (flag2tag[i].inverse)
1087 to_clear = talloc_asprintf_append (to_clear,
1091 to_set = talloc_asprintf_append (to_set,
1098 /* Then, find the flags for all tags not present. */
1099 for (i = 0; i < ARRAY_SIZE (flag2tag); i++) {
1100 if (flag2tag[i].inverse) {
1101 if (strchr (to_clear, flag2tag[i].flag) == NULL)
1102 to_set = talloc_asprintf_append (to_set, "%c", flag2tag[i].flag);
1104 if (strchr (to_set, flag2tag[i].flag) == NULL)
1105 to_clear = talloc_asprintf_append (to_clear, "%c", flag2tag[i].flag);
1109 *to_set_ret = to_set;
1110 *to_clear_ret = to_clear;
1113 /* Given 'filename' and a set of maildir flags to set and to clear,
1114 * compute the new maildir filename.
1116 * If the existing filename is in the directory "new", the new
1117 * filename will be in the directory "cur".
1119 * After a sequence of ":2," in the filename, any subsequent
1120 * single-character flags will be added or removed according to the
1121 * characters in flags_to_set and flags_to_clear. Any existing flags
1122 * not mentioned in either string will remain. The final list of flags
1123 * will be in ASCII order.
1125 * If the original flags seem invalid, (repeated characters or
1126 * non-ASCII ordering of flags), this function will return NULL
1127 * (meaning that renaming would not be safe and should not occur).
1130 _new_maildir_filename (void *ctx,
1131 const char *filename,
1132 const char *flags_to_set,
1133 const char *flags_to_clear)
1135 const char *info, *flags;
1136 unsigned int flag, last_flag;
1137 char *filename_new, *dir;
1139 int flags_in_map = 0;
1143 memset (flag_map, 0, sizeof (flag_map));
1145 info = strstr (filename, ":2,");
1148 info = filename + strlen(filename);
1152 /* Loop through existing flags in filename. */
1153 for (flags = info + 3, last_flag = 0;
1155 last_flag = flag, flags++)
1159 /* Original flags not in ASCII order. Abort. */
1160 if (flag < last_flag)
1163 /* Non-ASCII flag. Abort. */
1164 if (flag > sizeof(flag_map) - 1)
1167 /* Repeated flag value. Abort. */
1176 /* Then set and clear our flags from tags. */
1177 for (flags = flags_to_set; *flags; flags++) {
1179 if (flag_map[flag] == 0) {
1185 for (flags = flags_to_clear; *flags; flags++) {
1187 if (flag_map[flag]) {
1193 filename_new = (char *) talloc_size (ctx,
1195 strlen (":2,") + flags_in_map + 1);
1196 if (unlikely (filename_new == NULL))
1199 strncpy (filename_new, filename, info - filename);
1200 filename_new[info - filename] = '\0';
1202 strcat (filename_new, ":2,");
1204 s = filename_new + strlen (filename_new);
1205 for (i = 0; i < sizeof (flag_map); i++)
1214 /* If message is in new/ move it under cur/. */
1215 dir = (char *) _filename_is_in_maildir (filename_new);
1216 if (dir && STRNCMP_LITERAL (dir, "new/") == 0)
1217 memcpy (dir, "cur/", 4);
1219 return filename_new;
1223 notmuch_message_tags_to_maildir_flags (notmuch_message_t *message)
1225 notmuch_filenames_t *filenames;
1226 const char *filename;
1228 char *to_set, *to_clear;
1229 notmuch_status_t status = NOTMUCH_STATUS_SUCCESS;
1231 _get_maildir_flag_actions (message, &to_set, &to_clear);
1233 for (filenames = notmuch_message_get_filenames (message);
1234 notmuch_filenames_valid (filenames);
1235 notmuch_filenames_move_to_next (filenames))
1237 filename = notmuch_filenames_get (filenames);
1239 if (! _filename_is_in_maildir (filename))
1242 filename_new = _new_maildir_filename (message, filename,
1244 if (filename_new == NULL)
1247 if (strcmp (filename, filename_new)) {
1249 notmuch_status_t new_status;
1251 err = rename (filename, filename_new);
1255 new_status = _notmuch_message_remove_filename (message,
1257 /* Hold on to only the first error. */
1258 if (! status && new_status) {
1259 status = new_status;
1263 new_status = _notmuch_message_add_filename (message,
1265 /* Hold on to only the first error. */
1266 if (! status && new_status) {
1267 status = new_status;
1271 _notmuch_message_sync (message);
1274 talloc_free (filename_new);
1277 talloc_free (to_set);
1278 talloc_free (to_clear);
1280 return NOTMUCH_STATUS_SUCCESS;
1284 notmuch_message_remove_all_tags (notmuch_message_t *message)
1286 notmuch_private_status_t private_status;
1287 notmuch_status_t status;
1288 notmuch_tags_t *tags;
1291 status = _notmuch_database_ensure_writable (message->notmuch);
1295 for (tags = notmuch_message_get_tags (message);
1296 notmuch_tags_valid (tags);
1297 notmuch_tags_move_to_next (tags))
1299 tag = notmuch_tags_get (tags);
1301 private_status = _notmuch_message_remove_term (message, "tag", tag);
1302 if (private_status) {
1303 INTERNAL_ERROR ("_notmuch_message_remove_term return unexpected value: %d\n",
1308 if (! message->frozen)
1309 _notmuch_message_sync (message);
1312 return NOTMUCH_STATUS_SUCCESS;
1316 notmuch_message_freeze (notmuch_message_t *message)
1318 notmuch_status_t status;
1320 status = _notmuch_database_ensure_writable (message->notmuch);
1326 return NOTMUCH_STATUS_SUCCESS;
1330 notmuch_message_thaw (notmuch_message_t *message)
1332 notmuch_status_t status;
1334 status = _notmuch_database_ensure_writable (message->notmuch);
1338 if (message->frozen > 0) {
1340 if (message->frozen == 0)
1341 _notmuch_message_sync (message);
1342 return NOTMUCH_STATUS_SUCCESS;
1344 return NOTMUCH_STATUS_UNBALANCED_FREEZE_THAW;
1349 notmuch_message_destroy (notmuch_message_t *message)
1351 talloc_free (message);