1 /* notmuch - Not much of an email library, (just index and search)
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 https://www.gnu.org/licenses/ .
18 * Author: Carl Worth <cworth@cworth.org>
22 * @defgroup notmuch The notmuch API
24 * Not much of an email library, (just index and search)
35 # define NOTMUCH_BEGIN_DECLS extern "C" {
36 # define NOTMUCH_END_DECLS }
38 # define NOTMUCH_BEGIN_DECLS
39 # define NOTMUCH_END_DECLS
46 #pragma GCC visibility push(default)
57 * The library version number. This must agree with the soname
58 * version in Makefile.local.
60 #define LIBNOTMUCH_MAJOR_VERSION 5
61 #define LIBNOTMUCH_MINOR_VERSION 4
62 #define LIBNOTMUCH_MICRO_VERSION 0
65 #if defined (__clang_major__) && __clang_major__ >= 3 \
66 || defined (__GNUC__) && __GNUC__ >= 5 \
67 || defined (__GNUC__) && __GNUC__ == 4 && __GNUC_MINOR__ >= 5
68 #define NOTMUCH_DEPRECATED(major, minor) \
69 __attribute__ ((deprecated ("function deprecated as of libnotmuch " #major "." #minor)))
71 #define NOTMUCH_DEPRECATED(major, minor) __attribute__ ((deprecated))
75 #endif /* __DOXYGEN__ */
78 * Check the version of the notmuch library being compiled against.
80 * Return true if the library being compiled against is of the
81 * specified version or above. For example:
84 * #if LIBNOTMUCH_CHECK_VERSION(3, 1, 0)
85 * (code requiring libnotmuch 3.1.0 or above)
89 * LIBNOTMUCH_CHECK_VERSION has been defined since version 3.1.0; to
90 * check for versions prior to that, use:
93 * #if !defined(NOTMUCH_CHECK_VERSION)
94 * (code requiring libnotmuch prior to 3.1.0)
98 #define LIBNOTMUCH_CHECK_VERSION(major, minor, micro) \
99 (LIBNOTMUCH_MAJOR_VERSION > (major) || \
100 (LIBNOTMUCH_MAJOR_VERSION == (major) && LIBNOTMUCH_MINOR_VERSION > (minor)) || \
101 (LIBNOTMUCH_MAJOR_VERSION == (major) && LIBNOTMUCH_MINOR_VERSION == (minor) && \
102 LIBNOTMUCH_MICRO_VERSION >= (micro)))
105 * Notmuch boolean type.
107 typedef int notmuch_bool_t;
110 * Status codes used for the return values of most functions.
112 * A zero value (NOTMUCH_STATUS_SUCCESS) indicates that the function
113 * completed without error. Any other value indicates an error.
115 typedef enum _notmuch_status {
119 NOTMUCH_STATUS_SUCCESS = 0,
123 NOTMUCH_STATUS_OUT_OF_MEMORY,
125 * An attempt was made to write to a database opened in read-only
128 NOTMUCH_STATUS_READ_ONLY_DATABASE,
130 * A Xapian exception occurred.
132 * @todo We don't really want to expose this lame XAPIAN_EXCEPTION
133 * value. Instead we should map to things like DATABASE_LOCKED or
136 NOTMUCH_STATUS_XAPIAN_EXCEPTION,
138 * An error occurred trying to read or write to a file (this could
139 * be file not found, permission denied, etc.)
141 NOTMUCH_STATUS_FILE_ERROR,
143 * A file was presented that doesn't appear to be an email
146 NOTMUCH_STATUS_FILE_NOT_EMAIL,
148 * A file contains a message ID that is identical to a message
149 * already in the database.
151 NOTMUCH_STATUS_DUPLICATE_MESSAGE_ID,
153 * The user erroneously passed a NULL pointer to a notmuch
156 NOTMUCH_STATUS_NULL_POINTER,
158 * A tag value is too long (exceeds NOTMUCH_TAG_MAX).
160 NOTMUCH_STATUS_TAG_TOO_LONG,
162 * The notmuch_message_thaw function has been called more times
163 * than notmuch_message_freeze.
165 NOTMUCH_STATUS_UNBALANCED_FREEZE_THAW,
167 * notmuch_database_end_atomic has been called more times than
168 * notmuch_database_begin_atomic.
170 NOTMUCH_STATUS_UNBALANCED_ATOMIC,
172 * The operation is not supported.
174 NOTMUCH_STATUS_UNSUPPORTED_OPERATION,
176 * The operation requires a database upgrade.
178 NOTMUCH_STATUS_UPGRADE_REQUIRED,
180 * There is a problem with the proposed path, e.g. a relative path
181 * passed to a function expecting an absolute path.
183 NOTMUCH_STATUS_PATH_ERROR,
185 * The requested operation was ignored. Depending on the function,
186 * this may not be an actual error.
188 NOTMUCH_STATUS_IGNORED,
190 * One of the arguments violates the preconditions for the
191 * function, in a way not covered by a more specific argument.
193 NOTMUCH_STATUS_ILLEGAL_ARGUMENT,
195 * A MIME object claimed to have cryptographic protection which
196 * notmuch tried to handle, but the protocol was not specified in
197 * an intelligible way.
199 NOTMUCH_STATUS_MALFORMED_CRYPTO_PROTOCOL,
201 * Notmuch attempted to do crypto processing, but could not
202 * initialize the engine needed to do so.
204 NOTMUCH_STATUS_FAILED_CRYPTO_CONTEXT_CREATION,
206 * A MIME object claimed to have cryptographic protection, and
207 * notmuch attempted to process it, but the specific protocol was
208 * something that notmuch doesn't know how to handle.
210 NOTMUCH_STATUS_UNKNOWN_CRYPTO_PROTOCOL,
212 * Unable to load a config file
214 NOTMUCH_STATUS_NO_CONFIG,
216 * Unable to load a database
218 NOTMUCH_STATUS_NO_DATABASE,
220 * Database exists, so not (re)-created
222 NOTMUCH_STATUS_DATABASE_EXISTS,
224 * Not an actual status value. Just a way to find out how many
225 * valid status values there are.
227 NOTMUCH_STATUS_LAST_STATUS
231 * Get a string representation of a notmuch_status_t value.
233 * The result is read-only.
236 notmuch_status_to_string (notmuch_status_t status);
238 /* Various opaque data types. For each notmuch_<foo>_t see the various
239 * notmuch_<foo> functions below. */
241 typedef struct _notmuch_database notmuch_database_t;
242 typedef struct _notmuch_query notmuch_query_t;
243 typedef struct _notmuch_threads notmuch_threads_t;
244 typedef struct _notmuch_thread notmuch_thread_t;
245 typedef struct _notmuch_messages notmuch_messages_t;
246 typedef struct _notmuch_message notmuch_message_t;
247 typedef struct _notmuch_tags notmuch_tags_t;
248 typedef struct _notmuch_directory notmuch_directory_t;
249 typedef struct _notmuch_filenames notmuch_filenames_t;
250 typedef struct _notmuch_config_list notmuch_config_list_t;
251 typedef struct _notmuch_config_values notmuch_config_values_t;
252 typedef struct _notmuch_config_pairs notmuch_config_pairs_t;
253 typedef struct _notmuch_indexopts notmuch_indexopts_t;
254 #endif /* __DOXYGEN__ */
257 * Create a new, empty notmuch database located at 'path'.
259 * The path should be a top-level directory to a collection of
260 * plain-text email messages (one message per file). This call will
261 * create a new ".notmuch" directory within 'path' where notmuch will
264 * After a successful call to notmuch_database_create, the returned
265 * database will be open so the caller should call
266 * notmuch_database_destroy when finished with it.
268 * The database will not yet have any data in it
269 * (notmuch_database_create itself is a very cheap function). Messages
270 * contained within 'path' can be added to the database by calling
271 * notmuch_database_index_file.
273 * In case of any failure, this function returns an error status and
274 * sets *database to NULL (after printing an error message on stderr).
278 * NOTMUCH_STATUS_SUCCESS: Successfully created the database.
280 * NOTMUCH_STATUS_NULL_POINTER: The given 'path' argument is NULL.
282 * NOTMUCH_STATUS_OUT_OF_MEMORY: Out of memory.
284 * NOTMUCH_STATUS_FILE_ERROR: An error occurred trying to create the
285 * database file (such as permission denied, or file not found,
286 * etc.), or the database already exists.
288 * NOTMUCH_STATUS_XAPIAN_EXCEPTION: A Xapian exception occurred.
291 notmuch_database_create (const char *path, notmuch_database_t **database);
294 * Like notmuch_database_create, except optionally return an error
295 * message. This message is allocated by malloc and should be freed by
299 notmuch_database_create_verbose (const char *path,
300 notmuch_database_t **database,
301 char **error_message);
304 * Database open mode for notmuch_database_open.
308 * Open database for reading only.
310 NOTMUCH_DATABASE_MODE_READ_ONLY = 0,
312 * Open database for reading and writing.
314 NOTMUCH_DATABASE_MODE_READ_WRITE
315 } notmuch_database_mode_t;
318 * Deprecated alias for notmuch_database_open_with_config with
319 * config_path="" and error_message=NULL
320 * @deprecated Deprecated as of libnotmuch 5.4 (notmuch 0.32)
322 /* NOTMUCH_DEPRECATED(5, 4) */
324 notmuch_database_open (const char *path,
325 notmuch_database_mode_t mode,
326 notmuch_database_t **database);
328 * Deprecated alias for notmuch_database_open_with_config with
331 * @deprecated Deprecated as of libnotmuch 5.4 (notmuch 0.32)
334 /* NOTMUCH_DEPRECATED(5, 4) */
336 notmuch_database_open_verbose (const char *path,
337 notmuch_database_mode_t mode,
338 notmuch_database_t **database,
339 char **error_message);
342 * Open an existing notmuch database located at 'database_path', using
343 * configuration in 'config_path'.
345 * @param[in] database_path
347 * Path to existing database.
349 * A notmuch database is a Xapian database containing appropriate
352 * The database should have been created at some time in the past,
353 * (not necessarily by this process), by calling
354 * notmuch_database_create.
356 * If 'database_path' is NULL, use the location specified
358 * - in the environment variable NOTMUCH_DATABASE, if non-empty
360 * - in a configuration file, located as described under 'config_path'
362 * - by $XDG_DATA_HOME/notmuch/$PROFILE where XDG_DATA_HOME defaults
363 * to "$HOME/.local/share" and PROFILE as as discussed in
366 * If 'database_path' is non-NULL, but does not appear to be a Xapian
367 * database, check for a directory '.notmuch/xapian' below
368 * 'database_path' (this is the behavior of
369 * notmuch_database_open_verbose pre-0.32).
374 * Mode to open database. Use one of #NOTMUCH_DATABASE_MODE_READ_WRITE
375 * or #NOTMUCH_DATABASE_MODE_READ_ONLY
378 * @param[in] config_path
380 * Path to config file.
382 * Config file is key-value, with mandatory sections. See
383 * <em>notmuch-config(5)</em> for more information. The key-value pair
384 * overrides the corresponding configuration data stored in the
385 * database (see <em>notmuch_database_get_config</em>)
387 * If <em>config_path</em> is NULL use the path specified
389 * - in environment variable <em>NOTMUCH_CONFIG</em>, if non-empty
391 * - by <em>XDG_CONFIG_HOME</em>/notmuch/ where
392 * XDG_CONFIG_HOME defaults to "$HOME/.config".
394 * - by $HOME/.notmuch-config
396 * If <em>config_path</em> is "" (empty string) then do not
397 * open any configuration file.
399 * @param[in] profile:
401 * Name of profile (configuration/database variant).
403 * If non-NULL, append to the directory / file path determined for
404 * <em>config_path</em> and <em>database_path</em>.
407 * - environment variable NOTMUCH_PROFILE if defined,
408 * - otherwise "default" for directories and "" (empty string) for paths.
411 * @param[out] database
413 * Pointer to database object. May not be NULL.
415 * The caller should call notmuch_database_destroy when finished with
418 * In case of any failure, this function returns an error status and
419 * sets *database to NULL.
422 * @param[out] error_message
423 * If non-NULL, store error message from opening the database.
424 * Any such message is allocated by \a malloc(3) and should be freed
427 * @retval NOTMUCH_STATUS_SUCCESS: Successfully opened the database.
429 * @retval NOTMUCH_STATUS_NULL_POINTER: The given \a database
432 * @retval NOTMUCH_STATUS_OUT_OF_MEMORY: Out of memory.
434 * @retval NOTMUCH_STATUS_FILE_ERROR: An error occurred trying to open the
435 * database or config file (such as permission denied, or file not found,
436 * etc.), or the database version is unknown.
438 * @retval NOTMUCH_STATUS_XAPIAN_EXCEPTION: A Xapian exception occurred.
440 * @since libnotmuch 5.4 (notmuch 0.32)
444 notmuch_database_open_with_config (const char *database_path,
445 notmuch_database_mode_t mode,
446 const char *config_path,
448 notmuch_database_t **database,
449 char **error_message);
453 * Loads configuration from config file, database, and/or defaults
455 * For description of arguments, @see notmuch_database_open_with_config
457 * @retval NOTMUCH_STATUS_SUCCESS: Successfully loaded configuration.
459 * @retval NOTMUCH_STATUS_NO_CONFIG: No config file was loaded. Not fatal.
461 * @retval NOTMUCH_STATUS_NO_DATABASE: No config information was
462 * loaded from a database. Not fatal.
464 * @retval NOTMUCH_STATUS_OUT_OF_MEMORY: Out of memory.
466 * @retval NOTMUCH_STATUS_FILE_ERROR: An error occurred trying to open the
467 * database or config file (such as permission denied, or file not found,
470 * @retval NOTMUCH_STATUS_XAPIAN_EXCEPTION: A Xapian exception occurred.
472 * @since libnotmuch 5.4 (notmuch 0.32)
476 notmuch_database_load_config (const char *database_path,
477 const char *config_path,
479 notmuch_database_t **database,
480 char **error_message);
483 * Create a new notmuch database located at 'database_path', using
484 * configuration in 'config_path'.
486 * For description of arguments, @see notmuch_database_open_with_config
488 * @retval NOTMUCH_STATUS_SUCCESS: Successfully created the database.
490 * @retval NOTMUCH_STATUS_DATABASE_EXISTS: Database already exists, not created
492 * @retval NOTMUCH_STATUS_OUT_OF_MEMORY: Out of memory.
494 * @retval NOTMUCH_STATUS_FILE_ERROR: An error occurred trying to open the
495 * database or config file (such as permission denied, or file not found,
498 * @retval NOTMUCH_STATUS_XAPIAN_EXCEPTION: A Xapian exception occurred.
500 * @since libnotmuch 5.4 (notmuch 0.32)
504 notmuch_database_create_with_config (const char *database_path,
505 const char *config_path,
507 notmuch_database_t **database,
508 char **error_message);
511 * Retrieve last status string for given database.
515 notmuch_database_status_string (const notmuch_database_t *notmuch);
518 * Commit changes and close the given notmuch database.
520 * After notmuch_database_close has been called, calls to other
521 * functions on objects derived from this database may either behave
522 * as if the database had not been closed (e.g., if the required data
523 * has been cached) or may fail with a
524 * NOTMUCH_STATUS_XAPIAN_EXCEPTION. The only further operation
525 * permitted on the database itself is to call
526 * notmuch_database_destroy.
528 * notmuch_database_close can be called multiple times. Later calls
531 * For writable databases, notmuch_database_close commits all changes
532 * to disk before closing the database, unless the caller is currently
533 * in an atomic section (there was a notmuch_database_begin_atomic
534 * without a matching notmuch_database_end_atomic). In this case
535 * changes since the last commit are discarded. @see
536 * notmuch_database_end_atomic for more information.
540 * NOTMUCH_STATUS_SUCCESS: Successfully closed the database.
542 * NOTMUCH_STATUS_XAPIAN_EXCEPTION: A Xapian exception occurred; the
543 * database has been closed but there are no guarantees the
544 * changes to the database, if any, have been flushed to disk.
547 notmuch_database_close (notmuch_database_t *database);
550 * A callback invoked by notmuch_database_compact to notify the user
551 * of the progress of the compaction process.
553 typedef void (*notmuch_compact_status_cb_t)(const char *message, void *closure);
556 * Compact a notmuch database, backing up the original database to the
559 * The database will be opened with NOTMUCH_DATABASE_MODE_READ_WRITE
560 * during the compaction process to ensure no writes are made.
562 * If the optional callback function 'status_cb' is non-NULL, it will
563 * be called with diagnostic and informational messages. The argument
564 * 'closure' is passed verbatim to any callback invoked.
567 notmuch_database_compact (const char *path,
568 const char *backup_path,
569 notmuch_compact_status_cb_t status_cb,
573 * Like notmuch_database_compact, but take an open database as a
576 * @since libnnotmuch 5.4 (notmuch 0.32)
579 notmuch_database_compact_db (notmuch_database_t *database,
580 const char *backup_path,
581 notmuch_compact_status_cb_t status_cb,
585 * Destroy the notmuch database, closing it if necessary and freeing
586 * all associated resources.
588 * Return value as in notmuch_database_close if the database was open;
589 * notmuch_database_destroy itself has no failure modes.
592 notmuch_database_destroy (notmuch_database_t *database);
595 * Return the database path of the given database.
597 * The return value is a string owned by notmuch so should not be
598 * modified nor freed by the caller.
601 notmuch_database_get_path (notmuch_database_t *database);
604 * Return the database format version of the given database.
609 notmuch_database_get_version (notmuch_database_t *database);
612 * Can the database be upgraded to a newer database version?
614 * If this function returns TRUE, then the caller may call
615 * notmuch_database_upgrade to upgrade the database. If the caller
616 * does not upgrade an out-of-date database, then some functions may
617 * fail with NOTMUCH_STATUS_UPGRADE_REQUIRED. This always returns
618 * FALSE for a read-only database because there's no way to upgrade a
619 * read-only database.
621 * Also returns FALSE if an error occurs accessing the database.
625 notmuch_database_needs_upgrade (notmuch_database_t *database);
628 * Upgrade the current database to the latest supported version.
630 * This ensures that all current notmuch functionality will be
631 * available on the database. After opening a database in read-write
632 * mode, it is recommended that clients check if an upgrade is needed
633 * (notmuch_database_needs_upgrade) and if so, upgrade with this
634 * function before making any modifications. If
635 * notmuch_database_needs_upgrade returns FALSE, this will be a no-op.
637 * The optional progress_notify callback can be used by the caller to
638 * provide progress indication to the user. If non-NULL it will be
639 * called periodically with 'progress' as a floating-point value in
640 * the range of [0.0 .. 1.0] indicating the progress made so far in
641 * the upgrade process. The argument 'closure' is passed verbatim to
642 * any callback invoked.
645 notmuch_database_upgrade (notmuch_database_t *database,
646 void (*progress_notify)(void *closure,
651 * Begin an atomic database operation.
653 * Any modifications performed between a successful begin and a
654 * notmuch_database_end_atomic will be applied to the database
655 * atomically. Note that, unlike a typical database transaction, this
656 * only ensures atomicity, not durability; neither begin nor end
657 * necessarily flush modifications to disk.
659 * Atomic sections may be nested. begin_atomic and end_atomic must
660 * always be called in pairs.
664 * NOTMUCH_STATUS_SUCCESS: Successfully entered atomic section.
666 * NOTMUCH_STATUS_XAPIAN_EXCEPTION: A Xapian exception occurred;
667 * atomic section not entered.
670 notmuch_database_begin_atomic (notmuch_database_t *notmuch);
673 * Indicate the end of an atomic database operation. If repeated
674 * (with matching notmuch_database_begin_atomic) "database.autocommit"
675 * times, commit the the transaction and all previous (non-cancelled)
676 * transactions to the database.
680 * NOTMUCH_STATUS_SUCCESS: Successfully completed atomic section.
682 * NOTMUCH_STATUS_XAPIAN_EXCEPTION: A Xapian exception occurred;
683 * atomic section not ended.
685 * NOTMUCH_STATUS_UNBALANCED_ATOMIC: The database is not currently in
689 notmuch_database_end_atomic (notmuch_database_t *notmuch);
692 * Return the committed database revision and UUID.
694 * The database revision number increases monotonically with each
695 * commit to the database. Hence, all messages and message changes
696 * committed to the database (that is, visible to readers) have a last
697 * modification revision <= the committed database revision. Any
698 * messages committed in the future will be assigned a modification
699 * revision > the committed database revision.
701 * The UUID is a NUL-terminated opaque string that uniquely identifies
702 * this database. Two revision numbers are only comparable if they
703 * have the same database UUID.
706 notmuch_database_get_revision (notmuch_database_t *notmuch,
710 * Retrieve a directory object from the database for 'path'.
712 * Here, 'path' should be a path relative to the path of 'database'
713 * (see notmuch_database_get_path), or else should be an absolute path
714 * with initial components that match the path of 'database'.
716 * If this directory object does not exist in the database, this
717 * returns NOTMUCH_STATUS_SUCCESS and sets *directory to NULL.
719 * Otherwise the returned directory object is owned by the database
720 * and as such, will only be valid until notmuch_database_destroy is
725 * NOTMUCH_STATUS_SUCCESS: Successfully retrieved directory.
727 * NOTMUCH_STATUS_NULL_POINTER: The given 'directory' argument is NULL.
729 * NOTMUCH_STATUS_XAPIAN_EXCEPTION: A Xapian exception occurred;
730 * directory not retrieved.
732 * NOTMUCH_STATUS_UPGRADE_REQUIRED: The caller must upgrade the
733 * database to use this function.
736 notmuch_database_get_directory (notmuch_database_t *database,
738 notmuch_directory_t **directory);
741 * Add a message file to a database, indexing it for retrieval by
742 * future searches. If a message already exists with the same message
743 * ID as the specified file, their indexes will be merged, and this
744 * new filename will also be associated with the existing message.
746 * Here, 'filename' should be a path relative to the path of
747 * 'database' (see notmuch_database_get_path), or else should be an
748 * absolute filename with initial components that match the path of
751 * The file should be a single mail message (not a multi-message mbox)
752 * that is expected to remain at its current location, (since the
753 * notmuch database will reference the filename, and will not copy the
754 * entire contents of the file.
756 * If another message with the same message ID already exists in the
757 * database, rather than creating a new message, this adds the search
758 * terms from the identified file to the existing message's index, and
759 * adds 'filename' to the list of filenames known for the message.
761 * The 'indexopts' parameter can be NULL (meaning, use the indexing
762 * defaults from the database), or can be an explicit choice of
763 * indexing options that should govern the indexing of this specific
766 * If 'message' is not NULL, then, on successful return
767 * (NOTMUCH_STATUS_SUCCESS or NOTMUCH_STATUS_DUPLICATE_MESSAGE_ID) '*message'
768 * will be initialized to a message object that can be used for things
769 * such as adding tags to the just-added message. The user should call
770 * notmuch_message_destroy when done with the message. On any failure
771 * '*message' will be set to NULL.
775 * NOTMUCH_STATUS_SUCCESS: Message successfully added to database.
777 * NOTMUCH_STATUS_XAPIAN_EXCEPTION: A Xapian exception occurred,
780 * NOTMUCH_STATUS_DUPLICATE_MESSAGE_ID: Message has the same message
781 * ID as another message already in the database. The new
782 * filename was successfully added to the message in the database
783 * (if not already present) and the existing message is returned.
785 * NOTMUCH_STATUS_FILE_ERROR: an error occurred trying to open the
786 * file, (such as permission denied, or file not found,
787 * etc.). Nothing added to the database.
789 * NOTMUCH_STATUS_FILE_NOT_EMAIL: the contents of filename don't look
790 * like an email message. Nothing added to the database.
792 * NOTMUCH_STATUS_READ_ONLY_DATABASE: Database was opened in read-only
793 * mode so no message can be added.
795 * NOTMUCH_STATUS_UPGRADE_REQUIRED: The caller must upgrade the
796 * database to use this function.
798 * @since libnotmuch 5.1 (notmuch 0.26)
801 notmuch_database_index_file (notmuch_database_t *database,
802 const char *filename,
803 notmuch_indexopts_t *indexopts,
804 notmuch_message_t **message);
807 * Deprecated alias for notmuch_database_index_file called with
810 * @deprecated Deprecated as of libnotmuch 5.1 (notmuch 0.26). Please
811 * use notmuch_database_index_file instead.
814 NOTMUCH_DEPRECATED (5, 1)
816 notmuch_database_add_message (notmuch_database_t *database,
817 const char *filename,
818 notmuch_message_t **message);
821 * Remove a message filename from the given notmuch database. If the
822 * message has no more filenames, remove the message.
824 * If the same message (as determined by the message ID) is still
825 * available via other filenames, then the message will persist in the
826 * database for those filenames. When the last filename is removed for
827 * a particular message, the database content for that message will be
832 * NOTMUCH_STATUS_SUCCESS: The last filename was removed and the
833 * message was removed from the database.
835 * NOTMUCH_STATUS_XAPIAN_EXCEPTION: A Xapian exception occurred,
836 * message not removed.
838 * NOTMUCH_STATUS_DUPLICATE_MESSAGE_ID: This filename was removed but
839 * the message persists in the database with at least one other
842 * NOTMUCH_STATUS_READ_ONLY_DATABASE: Database was opened in read-only
843 * mode so no message can be removed.
845 * NOTMUCH_STATUS_UPGRADE_REQUIRED: The caller must upgrade the
846 * database to use this function.
849 notmuch_database_remove_message (notmuch_database_t *database,
850 const char *filename);
853 * Find a message with the given message_id.
855 * If a message with the given message_id is found then, on successful return
856 * (NOTMUCH_STATUS_SUCCESS) '*message' will be initialized to a message
857 * object. The caller should call notmuch_message_destroy when done with the
860 * On any failure or when the message is not found, this function initializes
861 * '*message' to NULL. This means, when NOTMUCH_STATUS_SUCCESS is returned, the
862 * caller is supposed to check '*message' for NULL to find out whether the
863 * message with the given message_id was found.
867 * NOTMUCH_STATUS_SUCCESS: Successful return, check '*message'.
869 * NOTMUCH_STATUS_NULL_POINTER: The given 'message' argument is NULL
871 * NOTMUCH_STATUS_OUT_OF_MEMORY: Out of memory, creating message object
873 * NOTMUCH_STATUS_XAPIAN_EXCEPTION: A Xapian exception occurred
876 notmuch_database_find_message (notmuch_database_t *database,
877 const char *message_id,
878 notmuch_message_t **message);
881 * Find a message with the given filename.
883 * If the database contains a message with the given filename then, on
884 * successful return (NOTMUCH_STATUS_SUCCESS) '*message' will be initialized to
885 * a message object. The caller should call notmuch_message_destroy when done
888 * On any failure or when the message is not found, this function initializes
889 * '*message' to NULL. This means, when NOTMUCH_STATUS_SUCCESS is returned, the
890 * caller is supposed to check '*message' for NULL to find out whether the
891 * message with the given filename is found.
895 * NOTMUCH_STATUS_SUCCESS: Successful return, check '*message'
897 * NOTMUCH_STATUS_NULL_POINTER: The given 'message' argument is NULL
899 * NOTMUCH_STATUS_OUT_OF_MEMORY: Out of memory, creating the message object
901 * NOTMUCH_STATUS_XAPIAN_EXCEPTION: A Xapian exception occurred
903 * NOTMUCH_STATUS_UPGRADE_REQUIRED: The caller must upgrade the
904 * database to use this function.
907 notmuch_database_find_message_by_filename (notmuch_database_t *notmuch,
908 const char *filename,
909 notmuch_message_t **message);
912 * Return a list of all tags found in the database.
914 * This function creates a list of all tags found in the database. The
915 * resulting list contains all tags from all messages found in the database.
917 * On error this function returns NULL.
920 notmuch_database_get_all_tags (notmuch_database_t *db);
923 * Reopen an open notmuch database.
925 * @param [in] db open notmuch database
926 * @param [in] mode mode (read only or read-write) for reopened database.
928 * @retval #NOTMUCH_STATUS_SUCCESS
929 * @retval #NOTMUCH_STATUS_ILLEGAL_ARGUMENT The passed database was not open.
930 * @retval #NOTMUCH_STATUS_XAPIAN_EXCEPTION A Xapian exception occured
933 notmuch_database_reopen (notmuch_database_t *db, notmuch_database_mode_t mode);
936 * Create a new query for 'database'.
938 * Here, 'database' should be an open database, (see
939 * notmuch_database_open and notmuch_database_create).
941 * For the query string, we'll document the syntax here more
942 * completely in the future, but it's likely to be a specialized
943 * version of the general Xapian query syntax:
945 * https://xapian.org/docs/queryparser.html
947 * As a special case, passing either a length-zero string, (that is ""),
948 * or a string consisting of a single asterisk (that is "*"), will
949 * result in a query that returns all messages in the database.
951 * See notmuch_query_set_sort for controlling the order of results.
952 * See notmuch_query_search_messages and notmuch_query_search_threads
953 * to actually execute the query.
955 * User should call notmuch_query_destroy when finished with this
958 * Will return NULL if insufficient memory is available.
961 notmuch_query_create (notmuch_database_t *database,
962 const char *query_string);
965 * Sort values for notmuch_query_set_sort.
971 NOTMUCH_SORT_OLDEST_FIRST,
975 NOTMUCH_SORT_NEWEST_FIRST,
977 * Sort by message-id.
979 NOTMUCH_SORT_MESSAGE_ID,
983 NOTMUCH_SORT_UNSORTED
987 * Return the query_string of this query. See notmuch_query_create.
990 notmuch_query_get_query_string (const notmuch_query_t *query);
993 * Return the notmuch database of this query. See notmuch_query_create.
996 notmuch_query_get_database (const notmuch_query_t *query);
999 * Exclude values for notmuch_query_set_omit_excluded. The strange
1000 * order is to maintain backward compatibility: the old FALSE/TRUE
1001 * options correspond to the new
1002 * NOTMUCH_EXCLUDE_FLAG/NOTMUCH_EXCLUDE_TRUE options.
1005 NOTMUCH_EXCLUDE_FLAG,
1006 NOTMUCH_EXCLUDE_TRUE,
1007 NOTMUCH_EXCLUDE_FALSE,
1009 } notmuch_exclude_t;
1012 * Specify whether to omit excluded results or simply flag them. By
1013 * default, this is set to TRUE.
1015 * If set to TRUE or ALL, notmuch_query_search_messages will omit excluded
1016 * messages from the results, and notmuch_query_search_threads will omit
1017 * threads that match only in excluded messages. If set to TRUE,
1018 * notmuch_query_search_threads will include all messages in threads that
1019 * match in at least one non-excluded message. Otherwise, if set to ALL,
1020 * notmuch_query_search_threads will omit excluded messages from all threads.
1022 * If set to FALSE or FLAG then both notmuch_query_search_messages and
1023 * notmuch_query_search_threads will return all matching
1024 * messages/threads regardless of exclude status. If set to FLAG then
1025 * the exclude flag will be set for any excluded message that is
1026 * returned by notmuch_query_search_messages, and the thread counts
1027 * for threads returned by notmuch_query_search_threads will be the
1028 * number of non-excluded messages/matches. Otherwise, if set to
1029 * FALSE, then the exclude status is completely ignored.
1031 * The performance difference when calling
1032 * notmuch_query_search_messages should be relatively small (and both
1033 * should be very fast). However, in some cases,
1034 * notmuch_query_search_threads is very much faster when omitting
1035 * excluded messages as it does not need to construct the threads that
1036 * only match in excluded messages.
1039 notmuch_query_set_omit_excluded (notmuch_query_t *query,
1040 notmuch_exclude_t omit_excluded);
1043 * Specify the sorting desired for this query.
1046 notmuch_query_set_sort (notmuch_query_t *query, notmuch_sort_t sort);
1049 * Return the sort specified for this query. See
1050 * notmuch_query_set_sort.
1053 notmuch_query_get_sort (const notmuch_query_t *query);
1056 * Add a tag that will be excluded from the query results by default.
1057 * This exclusion will be ignored if this tag appears explicitly in
1062 * NOTMUCH_STATUS_SUCCESS: excluded was added successfully.
1064 * NOTMUCH_STATUS_XAPIAN_EXCEPTION: a Xapian exception occurred.
1065 * Most likely a problem lazily parsing the query string.
1067 * NOTMUCH_STATUS_IGNORED: tag is explicitly present in the query, so
1071 notmuch_query_add_tag_exclude (notmuch_query_t *query, const char *tag);
1074 * Execute a query for threads, returning a notmuch_threads_t object
1075 * which can be used to iterate over the results. The returned threads
1076 * object is owned by the query and as such, will only be valid until
1077 * notmuch_query_destroy.
1079 * Typical usage might be:
1081 * notmuch_query_t *query;
1082 * notmuch_threads_t *threads;
1083 * notmuch_thread_t *thread;
1084 * notmuch_status_t stat;
1086 * query = notmuch_query_create (database, query_string);
1088 * for (stat = notmuch_query_search_threads (query, &threads);
1089 * stat == NOTMUCH_STATUS_SUCCESS &&
1090 * notmuch_threads_valid (threads);
1091 * notmuch_threads_move_to_next (threads))
1093 * thread = notmuch_threads_get (threads);
1095 * notmuch_thread_destroy (thread);
1098 * notmuch_query_destroy (query);
1100 * Note: If you are finished with a thread before its containing
1101 * query, you can call notmuch_thread_destroy to clean up some memory
1102 * sooner (as in the above example). Otherwise, if your thread objects
1103 * are long-lived, then you don't need to call notmuch_thread_destroy
1104 * and all the memory will still be reclaimed when the query is
1107 * Note that there's no explicit destructor needed for the
1108 * notmuch_threads_t object. (For consistency, we do provide a
1109 * notmuch_threads_destroy function, but there's no good reason
1110 * to call it if the query is about to be destroyed).
1112 * @since libnotmuch 5.0 (notmuch 0.25)
1115 notmuch_query_search_threads (notmuch_query_t *query,
1116 notmuch_threads_t **out);
1119 * Deprecated alias for notmuch_query_search_threads.
1121 * @deprecated Deprecated as of libnotmuch 5 (notmuch 0.25). Please
1122 * use notmuch_query_search_threads instead.
1125 NOTMUCH_DEPRECATED (5, 0)
1127 notmuch_query_search_threads_st (notmuch_query_t *query, notmuch_threads_t **out);
1130 * Execute a query for messages, returning a notmuch_messages_t object
1131 * which can be used to iterate over the results. The returned
1132 * messages object is owned by the query and as such, will only be
1133 * valid until notmuch_query_destroy.
1135 * Typical usage might be:
1137 * notmuch_query_t *query;
1138 * notmuch_messages_t *messages;
1139 * notmuch_message_t *message;
1141 * query = notmuch_query_create (database, query_string);
1143 * for (messages = notmuch_query_search_messages (query);
1144 * notmuch_messages_valid (messages);
1145 * notmuch_messages_move_to_next (messages))
1147 * message = notmuch_messages_get (messages);
1149 * notmuch_message_destroy (message);
1152 * notmuch_query_destroy (query);
1154 * Note: If you are finished with a message before its containing
1155 * query, you can call notmuch_message_destroy to clean up some memory
1156 * sooner (as in the above example). Otherwise, if your message
1157 * objects are long-lived, then you don't need to call
1158 * notmuch_message_destroy and all the memory will still be reclaimed
1159 * when the query is destroyed.
1161 * Note that there's no explicit destructor needed for the
1162 * notmuch_messages_t object. (For consistency, we do provide a
1163 * notmuch_messages_destroy function, but there's no good
1164 * reason to call it if the query is about to be destroyed).
1166 * If a Xapian exception occurs this function will return NULL.
1168 * @since libnotmuch 5 (notmuch 0.25)
1171 notmuch_query_search_messages (notmuch_query_t *query,
1172 notmuch_messages_t **out);
1174 * Deprecated alias for notmuch_query_search_messages
1176 * @deprecated Deprecated as of libnotmuch 5 (notmuch 0.25). Please use
1177 * notmuch_query_search_messages instead.
1181 NOTMUCH_DEPRECATED (5, 0)
1183 notmuch_query_search_messages_st (notmuch_query_t *query,
1184 notmuch_messages_t **out);
1187 * Destroy a notmuch_query_t along with any associated resources.
1189 * This will in turn destroy any notmuch_threads_t and
1190 * notmuch_messages_t objects generated by this query, (and in
1191 * turn any notmuch_thread_t and notmuch_message_t objects generated
1192 * from those results, etc.), if such objects haven't already been
1196 notmuch_query_destroy (notmuch_query_t *query);
1199 * Is the given 'threads' iterator pointing at a valid thread.
1201 * When this function returns TRUE, notmuch_threads_get will return a
1202 * valid object. Whereas when this function returns FALSE,
1203 * notmuch_threads_get will return NULL.
1205 * If passed a NULL pointer, this function returns FALSE
1207 * See the documentation of notmuch_query_search_threads for example
1208 * code showing how to iterate over a notmuch_threads_t object.
1211 notmuch_threads_valid (notmuch_threads_t *threads);
1214 * Get the current thread from 'threads' as a notmuch_thread_t.
1216 * Note: The returned thread belongs to 'threads' and has a lifetime
1217 * identical to it (and the query to which it belongs).
1219 * See the documentation of notmuch_query_search_threads for example
1220 * code showing how to iterate over a notmuch_threads_t object.
1222 * If an out-of-memory situation occurs, this function will return
1226 notmuch_threads_get (notmuch_threads_t *threads);
1229 * Move the 'threads' iterator to the next thread.
1231 * If 'threads' is already pointing at the last thread then the
1232 * iterator will be moved to a point just beyond that last thread,
1233 * (where notmuch_threads_valid will return FALSE and
1234 * notmuch_threads_get will return NULL).
1236 * See the documentation of notmuch_query_search_threads for example
1237 * code showing how to iterate over a notmuch_threads_t object.
1240 notmuch_threads_move_to_next (notmuch_threads_t *threads);
1243 * Destroy a notmuch_threads_t object.
1245 * It's not strictly necessary to call this function. All memory from
1246 * the notmuch_threads_t object will be reclaimed when the
1247 * containing query object is destroyed.
1250 notmuch_threads_destroy (notmuch_threads_t *threads);
1253 * Return the number of messages matching a search.
1255 * This function performs a search and returns the number of matching
1260 * NOTMUCH_STATUS_SUCCESS: query completed successfully.
1262 * NOTMUCH_STATUS_XAPIAN_EXCEPTION: a Xapian exception occurred. The
1263 * value of *count is not defined.
1265 * @since libnotmuch 5 (notmuch 0.25)
1268 notmuch_query_count_messages (notmuch_query_t *query, unsigned int *count);
1271 * Deprecated alias for notmuch_query_count_messages
1274 * @deprecated Deprecated since libnotmuch 5.0 (notmuch 0.25). Please
1275 * use notmuch_query_count_messages instead.
1277 NOTMUCH_DEPRECATED (5, 0)
1279 notmuch_query_count_messages_st (notmuch_query_t *query, unsigned int *count);
1282 * Return the number of threads matching a search.
1284 * This function performs a search and returns the number of unique thread IDs
1285 * in the matching messages. This is the same as number of threads matching a
1288 * Note that this is a significantly heavier operation than
1289 * notmuch_query_count_messages{_st}().
1293 * NOTMUCH_STATUS_OUT_OF_MEMORY: Memory allocation failed. The value
1294 * of *count is not defined
1296 * NOTMUCH_STATUS_SUCCESS: query completed successfully.
1298 * NOTMUCH_STATUS_XAPIAN_EXCEPTION: a Xapian exception occurred. The
1299 * value of *count is not defined.
1301 * @since libnotmuch 5 (notmuch 0.25)
1304 notmuch_query_count_threads (notmuch_query_t *query, unsigned *count);
1307 * Deprecated alias for notmuch_query_count_threads
1309 * @deprecated Deprecated as of libnotmuch 5.0 (notmuch 0.25). Please
1310 * use notmuch_query_count_threads_st instead.
1312 NOTMUCH_DEPRECATED (5, 0)
1314 notmuch_query_count_threads_st (notmuch_query_t *query, unsigned *count);
1317 * Get the thread ID of 'thread'.
1319 * The returned string belongs to 'thread' and as such, should not be
1320 * modified by the caller and will only be valid for as long as the
1321 * thread is valid, (which is until notmuch_thread_destroy or until
1322 * the query from which it derived is destroyed).
1325 notmuch_thread_get_thread_id (notmuch_thread_t *thread);
1328 * Get the total number of messages in 'thread'.
1330 * This count consists of all messages in the database belonging to
1331 * this thread. Contrast with notmuch_thread_get_matched_messages() .
1334 notmuch_thread_get_total_messages (notmuch_thread_t *thread);
1337 * Get the total number of files in 'thread'.
1339 * This sums notmuch_message_count_files over all messages in the
1341 * @returns Non-negative integer
1342 * @since libnotmuch 5.0 (notmuch 0.25)
1346 notmuch_thread_get_total_files (notmuch_thread_t *thread);
1349 * Get a notmuch_messages_t iterator for the top-level messages in
1350 * 'thread' in oldest-first order.
1352 * This iterator will not necessarily iterate over all of the messages
1353 * in the thread. It will only iterate over the messages in the thread
1354 * which are not replies to other messages in the thread.
1356 * The returned list will be destroyed when the thread is destroyed.
1358 notmuch_messages_t *
1359 notmuch_thread_get_toplevel_messages (notmuch_thread_t *thread);
1362 * Get a notmuch_thread_t iterator for all messages in 'thread' in
1363 * oldest-first order.
1365 * The returned list will be destroyed when the thread is destroyed.
1367 notmuch_messages_t *
1368 notmuch_thread_get_messages (notmuch_thread_t *thread);
1371 * Get the number of messages in 'thread' that matched the search.
1373 * This count includes only the messages in this thread that were
1374 * matched by the search from which the thread was created and were
1375 * not excluded by any exclude tags passed in with the query (see
1376 * notmuch_query_add_tag_exclude). Contrast with
1377 * notmuch_thread_get_total_messages() .
1380 notmuch_thread_get_matched_messages (notmuch_thread_t *thread);
1383 * Get the authors of 'thread' as a UTF-8 string.
1385 * The returned string is a comma-separated list of the names of the
1386 * authors of mail messages in the query results that belong to this
1389 * The string contains authors of messages matching the query first, then
1390 * non-matched authors (with the two groups separated by '|'). Within
1391 * each group, authors are ordered by date.
1393 * The returned string belongs to 'thread' and as such, should not be
1394 * modified by the caller and will only be valid for as long as the
1395 * thread is valid, (which is until notmuch_thread_destroy or until
1396 * the query from which it derived is destroyed).
1399 notmuch_thread_get_authors (notmuch_thread_t *thread);
1402 * Get the subject of 'thread' as a UTF-8 string.
1404 * The subject is taken from the first message (according to the query
1405 * order---see notmuch_query_set_sort) in the query results that
1406 * belongs to this thread.
1408 * The returned string belongs to 'thread' and as such, should not be
1409 * modified by the caller and will only be valid for as long as the
1410 * thread is valid, (which is until notmuch_thread_destroy or until
1411 * the query from which it derived is destroyed).
1414 notmuch_thread_get_subject (notmuch_thread_t *thread);
1417 * Get the date of the oldest message in 'thread' as a time_t value.
1420 notmuch_thread_get_oldest_date (notmuch_thread_t *thread);
1423 * Get the date of the newest message in 'thread' as a time_t value.
1426 notmuch_thread_get_newest_date (notmuch_thread_t *thread);
1429 * Get the tags for 'thread', returning a notmuch_tags_t object which
1430 * can be used to iterate over all tags.
1432 * Note: In the Notmuch database, tags are stored on individual
1433 * messages, not on threads. So the tags returned here will be all
1434 * tags of the messages which matched the search and which belong to
1437 * The tags object is owned by the thread and as such, will only be
1438 * valid for as long as the thread is valid, (for example, until
1439 * notmuch_thread_destroy or until the query from which it derived is
1442 * Typical usage might be:
1444 * notmuch_thread_t *thread;
1445 * notmuch_tags_t *tags;
1448 * thread = notmuch_threads_get (threads);
1450 * for (tags = notmuch_thread_get_tags (thread);
1451 * notmuch_tags_valid (tags);
1452 * notmuch_tags_move_to_next (tags))
1454 * tag = notmuch_tags_get (tags);
1458 * notmuch_thread_destroy (thread);
1460 * Note that there's no explicit destructor needed for the
1461 * notmuch_tags_t object. (For consistency, we do provide a
1462 * notmuch_tags_destroy function, but there's no good reason to call
1463 * it if the message is about to be destroyed).
1466 notmuch_thread_get_tags (notmuch_thread_t *thread);
1469 * Destroy a notmuch_thread_t object.
1472 notmuch_thread_destroy (notmuch_thread_t *thread);
1475 * Is the given 'messages' iterator pointing at a valid message.
1477 * When this function returns TRUE, notmuch_messages_get will return a
1478 * valid object. Whereas when this function returns FALSE,
1479 * notmuch_messages_get will return NULL.
1481 * See the documentation of notmuch_query_search_messages for example
1482 * code showing how to iterate over a notmuch_messages_t object.
1485 notmuch_messages_valid (notmuch_messages_t *messages);
1488 * Get the current message from 'messages' as a notmuch_message_t.
1490 * Note: The returned message belongs to 'messages' and has a lifetime
1491 * identical to it (and the query to which it belongs).
1493 * See the documentation of notmuch_query_search_messages for example
1494 * code showing how to iterate over a notmuch_messages_t object.
1496 * If an out-of-memory situation occurs, this function will return
1500 notmuch_messages_get (notmuch_messages_t *messages);
1503 * Move the 'messages' iterator to the next message.
1505 * If 'messages' is already pointing at the last message then the
1506 * iterator will be moved to a point just beyond that last message,
1507 * (where notmuch_messages_valid will return FALSE and
1508 * notmuch_messages_get will return NULL).
1510 * See the documentation of notmuch_query_search_messages for example
1511 * code showing how to iterate over a notmuch_messages_t object.
1514 notmuch_messages_move_to_next (notmuch_messages_t *messages);
1517 * Destroy a notmuch_messages_t object.
1519 * It's not strictly necessary to call this function. All memory from
1520 * the notmuch_messages_t object will be reclaimed when the containing
1521 * query object is destroyed.
1524 notmuch_messages_destroy (notmuch_messages_t *messages);
1527 * Return a list of tags from all messages.
1529 * The resulting list is guaranteed not to contain duplicated tags.
1531 * WARNING: You can no longer iterate over messages after calling this
1532 * function, because the iterator will point at the end of the list.
1533 * We do not have a function to reset the iterator yet and the only
1534 * way how you can iterate over the list again is to recreate the
1537 * The function returns NULL on error.
1540 notmuch_messages_collect_tags (notmuch_messages_t *messages);
1543 * Get the database associated with this message.
1545 * @since libnotmuch 5.2 (notmuch 0.27)
1547 notmuch_database_t *
1548 notmuch_message_get_database (const notmuch_message_t *message);
1551 * Get the message ID of 'message'.
1553 * The returned string belongs to 'message' and as such, should not be
1554 * modified by the caller and will only be valid for as long as the
1555 * message is valid, (which is until the query from which it derived
1558 * This function will return NULL if triggers an unhandled Xapian
1562 notmuch_message_get_message_id (notmuch_message_t *message);
1565 * Get the thread ID of 'message'.
1567 * The returned string belongs to 'message' and as such, should not be
1568 * modified by the caller and will only be valid for as long as the
1569 * message is valid, (for example, until the user calls
1570 * notmuch_message_destroy on 'message' or until a query from which it
1571 * derived is destroyed).
1573 * This function will return NULL if triggers an unhandled Xapian
1577 notmuch_message_get_thread_id (notmuch_message_t *message);
1580 * Get a notmuch_messages_t iterator for all of the replies to
1583 * Note: This call only makes sense if 'message' was ultimately
1584 * obtained from a notmuch_thread_t object, (such as by coming
1585 * directly from the result of calling notmuch_thread_get_
1586 * toplevel_messages or by any number of subsequent
1587 * calls to notmuch_message_get_replies).
1589 * If 'message' was obtained through some non-thread means, (such as
1590 * by a call to notmuch_query_search_messages), then this function
1593 * If there are no replies to 'message', this function will return
1594 * NULL. (Note that notmuch_messages_valid will accept that NULL
1595 * value as legitimate, and simply return FALSE for it.)
1597 * This function also returns NULL if it triggers a Xapian exception.
1599 * The returned list will be destroyed when the thread is
1602 notmuch_messages_t *
1603 notmuch_message_get_replies (notmuch_message_t *message);
1606 * Get the total number of files associated with a message.
1607 * @returns Non-negative integer for file count.
1608 * @returns Negative integer for error.
1609 * @since libnotmuch 5.0 (notmuch 0.25)
1612 notmuch_message_count_files (notmuch_message_t *message);
1615 * Get a filename for the email corresponding to 'message'.
1617 * The returned filename is an absolute filename, (the initial
1618 * component will match notmuch_database_get_path() ).
1620 * The returned string belongs to the message so should not be
1621 * modified or freed by the caller (nor should it be referenced after
1622 * the message is destroyed).
1624 * Note: If this message corresponds to multiple files in the mail
1625 * store, (that is, multiple files contain identical message IDs),
1626 * this function will arbitrarily return a single one of those
1627 * filenames. See notmuch_message_get_filenames for returning the
1628 * complete list of filenames.
1630 * This function returns NULL if it triggers a Xapian exception.
1633 notmuch_message_get_filename (notmuch_message_t *message);
1636 * Get all filenames for the email corresponding to 'message'.
1638 * Returns a notmuch_filenames_t iterator listing all the filenames
1639 * associated with 'message'. These files may not have identical
1640 * content, but each will have the identical Message-ID.
1642 * Each filename in the iterator is an absolute filename, (the initial
1643 * component will match notmuch_database_get_path() ).
1645 * This function returns NULL if it triggers a Xapian exception.
1647 notmuch_filenames_t *
1648 notmuch_message_get_filenames (notmuch_message_t *message);
1651 * Re-index the e-mail corresponding to 'message' using the supplied index options
1653 * Returns the status of the re-index operation. (see the return
1654 * codes documented in notmuch_database_index_file)
1656 * After reindexing, the user should discard the message object passed
1657 * in here by calling notmuch_message_destroy, since it refers to the
1658 * original message, not to the reindexed message.
1661 notmuch_message_reindex (notmuch_message_t *message,
1662 notmuch_indexopts_t *indexopts);
1667 typedef enum _notmuch_message_flag {
1668 NOTMUCH_MESSAGE_FLAG_MATCH,
1669 NOTMUCH_MESSAGE_FLAG_EXCLUDED,
1671 /* This message is a "ghost message", meaning it has no filenames
1672 * or content, but we know it exists because it was referenced by
1673 * some other message. A ghost message has only a message ID and
1676 NOTMUCH_MESSAGE_FLAG_GHOST,
1677 } notmuch_message_flag_t;
1680 * Get a value of a flag for the email corresponding to 'message'.
1682 * returns FALSE in case of errors.
1684 * @deprecated Deprecated as of libnotmuch 5.3 (notmuch 0.31). Please
1685 * use notmuch_message_get_flag_st instead.
1687 NOTMUCH_DEPRECATED (5, 3)
1689 notmuch_message_get_flag (notmuch_message_t *message,
1690 notmuch_message_flag_t flag);
1693 * Get a value of a flag for the email corresponding to 'message'.
1695 * @param message a message object
1696 * @param flag flag to check
1697 * @param is_set pointer to boolean to store flag value.
1699 * @retval #NOTMUCH_STATUS_SUCCESS
1700 * @retval #NOTMUCH_STATUS_NULL_POINTER is_set is NULL
1701 * @retval #NOTMUCH_STATUS_XAPIAN_EXCEPTION Accessing the database
1702 * triggered an exception.
1704 * @since libnotmuch 5.3 (notmuch 0.31)
1707 notmuch_message_get_flag_st (notmuch_message_t *message,
1708 notmuch_message_flag_t flag,
1709 notmuch_bool_t *is_set);
1712 * Set a value of a flag for the email corresponding to 'message'.
1715 notmuch_message_set_flag (notmuch_message_t *message,
1716 notmuch_message_flag_t flag, notmuch_bool_t value);
1719 * Get the date of 'message' as a time_t value.
1721 * For the original textual representation of the Date header from the
1722 * message call notmuch_message_get_header() with a header value of
1725 * Returns 0 in case of error.
1728 notmuch_message_get_date (notmuch_message_t *message);
1731 * Get the value of the specified header from 'message' as a UTF-8 string.
1733 * Common headers are stored in the database when the message is
1734 * indexed and will be returned from the database. Other headers will
1735 * be read from the actual message file.
1737 * The header name is case insensitive.
1739 * The returned string belongs to the message so should not be
1740 * modified or freed by the caller (nor should it be referenced after
1741 * the message is destroyed).
1743 * Returns an empty string ("") if the message does not contain a
1744 * header line matching 'header'. Returns NULL if any error occurs.
1747 notmuch_message_get_header (notmuch_message_t *message, const char *header);
1750 * Get the tags for 'message', returning a notmuch_tags_t object which
1751 * can be used to iterate over all tags.
1753 * The tags object is owned by the message and as such, will only be
1754 * valid for as long as the message is valid, (which is until the
1755 * query from which it derived is destroyed).
1757 * Typical usage might be:
1759 * notmuch_message_t *message;
1760 * notmuch_tags_t *tags;
1763 * message = notmuch_database_find_message (database, message_id);
1765 * for (tags = notmuch_message_get_tags (message);
1766 * notmuch_tags_valid (tags);
1767 * notmuch_tags_move_to_next (tags))
1769 * tag = notmuch_tags_get (tags);
1773 * notmuch_message_destroy (message);
1775 * Note that there's no explicit destructor needed for the
1776 * notmuch_tags_t object. (For consistency, we do provide a
1777 * notmuch_tags_destroy function, but there's no good reason to call
1778 * it if the message is about to be destroyed).
1781 notmuch_message_get_tags (notmuch_message_t *message);
1784 * The longest possible tag value.
1786 #define NOTMUCH_TAG_MAX 200
1789 * Add a tag to the given message.
1793 * NOTMUCH_STATUS_SUCCESS: Tag successfully added to message
1795 * NOTMUCH_STATUS_NULL_POINTER: The 'tag' argument is NULL
1797 * NOTMUCH_STATUS_TAG_TOO_LONG: The length of 'tag' is too long
1798 * (exceeds NOTMUCH_TAG_MAX)
1800 * NOTMUCH_STATUS_READ_ONLY_DATABASE: Database was opened in read-only
1801 * mode so message cannot be modified.
1804 notmuch_message_add_tag (notmuch_message_t *message, const char *tag);
1807 * Remove a tag from the given message.
1811 * NOTMUCH_STATUS_SUCCESS: Tag successfully removed from message
1813 * NOTMUCH_STATUS_NULL_POINTER: The 'tag' argument is NULL
1815 * NOTMUCH_STATUS_TAG_TOO_LONG: The length of 'tag' is too long
1816 * (exceeds NOTMUCH_TAG_MAX)
1818 * NOTMUCH_STATUS_READ_ONLY_DATABASE: Database was opened in read-only
1819 * mode so message cannot be modified.
1822 notmuch_message_remove_tag (notmuch_message_t *message, const char *tag);
1825 * Remove all tags from the given message.
1827 * See notmuch_message_freeze for an example showing how to safely
1828 * replace tag values.
1830 * @retval #NOTMUCH_STATUS_READ_ONLY_DATABASE: Database was opened in
1831 * read-only mode so message cannot be modified.
1832 * @retval #NOTMUCH_STATUS_XAPIAN_EXCEPTION: an exception was thrown
1833 * accessing the database.
1836 notmuch_message_remove_all_tags (notmuch_message_t *message);
1839 * Add/remove tags according to maildir flags in the message filename(s).
1841 * This function examines the filenames of 'message' for maildir
1842 * flags, and adds or removes tags on 'message' as follows when these
1843 * flags are present:
1845 * Flag Action if present
1846 * ---- -----------------
1847 * 'D' Adds the "draft" tag to the message
1848 * 'F' Adds the "flagged" tag to the message
1849 * 'P' Adds the "passed" tag to the message
1850 * 'R' Adds the "replied" tag to the message
1851 * 'S' Removes the "unread" tag from the message
1853 * For each flag that is not present, the opposite action (add/remove)
1854 * is performed for the corresponding tags.
1856 * Flags are identified as trailing components of the filename after a
1857 * sequence of ":2,".
1859 * If there are multiple filenames associated with this message, the
1860 * flag is considered present if it appears in one or more
1861 * filenames. (That is, the flags from the multiple filenames are
1862 * combined with the logical OR operator.)
1864 * A client can ensure that notmuch database tags remain synchronized
1865 * with maildir flags by calling this function after each call to
1866 * notmuch_database_index_file. See also
1867 * notmuch_message_tags_to_maildir_flags for synchronizing tag changes
1868 * back to maildir flags.
1871 notmuch_message_maildir_flags_to_tags (notmuch_message_t *message);
1874 * return TRUE if any filename of 'message' has maildir flag 'flag',
1877 * Deprecated wrapper for notmuch_message_has_maildir_flag_st
1879 * @returns FALSE in case of error
1880 * @deprecated libnotmuch 5.3 (notmuch 0.31)
1882 NOTMUCH_DEPRECATED (5, 3)
1884 notmuch_message_has_maildir_flag (notmuch_message_t *message, char flag);
1887 * check message for maildir flag
1889 * @param [in,out] message message to check
1890 * @param [in] flag flag to check for
1891 * @param [out] is_set pointer to boolean
1893 * @retval #NOTMUCH_STATUS_SUCCESS
1894 * @retval #NOTMUCH_STATUS_NULL_POINTER is_set is NULL
1895 * @retval #NOTMUCH_STATUS_XAPIAN_EXCEPTION Accessing the database
1896 * triggered an exception.
1899 notmuch_message_has_maildir_flag_st (notmuch_message_t *message,
1901 notmuch_bool_t *is_set);
1904 * Rename message filename(s) to encode tags as maildir flags.
1906 * Specifically, for each filename corresponding to this message:
1908 * If the filename is not in a maildir directory, do nothing. (A
1909 * maildir directory is determined as a directory named "new" or
1910 * "cur".) Similarly, if the filename has invalid maildir info,
1911 * (repeated or outof-ASCII-order flag characters after ":2,"), then
1914 * If the filename is in a maildir directory, rename the file so that
1915 * its filename ends with the sequence ":2," followed by zero or more
1916 * of the following single-character flags (in ASCII order):
1918 * * flag 'D' iff the message has the "draft" tag
1919 * * flag 'F' iff the message has the "flagged" tag
1920 * * flag 'P' iff the message has the "passed" tag
1921 * * flag 'R' iff the message has the "replied" tag
1922 * * flag 'S' iff the message does not have the "unread" tag
1924 * Any existing flags unmentioned in the list above will be preserved
1927 * Also, if this filename is in a directory named "new", rename it to
1928 * be within the neighboring directory named "cur".
1930 * A client can ensure that maildir filename flags remain synchronized
1931 * with notmuch database tags by calling this function after changing
1932 * tags, (after calls to notmuch_message_add_tag,
1933 * notmuch_message_remove_tag, or notmuch_message_freeze/
1934 * notmuch_message_thaw). See also notmuch_message_maildir_flags_to_tags
1935 * for synchronizing maildir flag changes back to tags.
1938 notmuch_message_tags_to_maildir_flags (notmuch_message_t *message);
1941 * Freeze the current state of 'message' within the database.
1943 * This means that changes to the message state, (via
1944 * notmuch_message_add_tag, notmuch_message_remove_tag, and
1945 * notmuch_message_remove_all_tags), will not be committed to the
1946 * database until the message is thawed with notmuch_message_thaw.
1948 * Multiple calls to freeze/thaw are valid and these calls will
1949 * "stack". That is there must be as many calls to thaw as to freeze
1950 * before a message is actually thawed.
1952 * The ability to do freeze/thaw allows for safe transactions to
1953 * change tag values. For example, explicitly setting a message to
1954 * have a given set of tags might look like this:
1956 * notmuch_message_freeze (message);
1958 * notmuch_message_remove_all_tags (message);
1960 * for (i = 0; i < NUM_TAGS; i++)
1961 * notmuch_message_add_tag (message, tags[i]);
1963 * notmuch_message_thaw (message);
1965 * With freeze/thaw used like this, the message in the database is
1966 * guaranteed to have either the full set of original tag values, or
1967 * the full set of new tag values, but nothing in between.
1969 * Imagine the example above without freeze/thaw and the operation
1970 * somehow getting interrupted. This could result in the message being
1971 * left with no tags if the interruption happened after
1972 * notmuch_message_remove_all_tags but before notmuch_message_add_tag.
1976 * NOTMUCH_STATUS_SUCCESS: Message successfully frozen.
1978 * NOTMUCH_STATUS_READ_ONLY_DATABASE: Database was opened in read-only
1979 * mode so message cannot be modified.
1982 notmuch_message_freeze (notmuch_message_t *message);
1985 * Thaw the current 'message', synchronizing any changes that may have
1986 * occurred while 'message' was frozen into the notmuch database.
1988 * See notmuch_message_freeze for an example of how to use this
1989 * function to safely provide tag changes.
1991 * Multiple calls to freeze/thaw are valid and these calls with
1992 * "stack". That is there must be as many calls to thaw as to freeze
1993 * before a message is actually thawed.
1997 * NOTMUCH_STATUS_SUCCESS: Message successfully thawed, (or at least
1998 * its frozen count has successfully been reduced by 1).
2000 * NOTMUCH_STATUS_UNBALANCED_FREEZE_THAW: An attempt was made to thaw
2001 * an unfrozen message. That is, there have been an unbalanced
2002 * number of calls to notmuch_message_freeze and
2003 * notmuch_message_thaw.
2006 notmuch_message_thaw (notmuch_message_t *message);
2009 * Destroy a notmuch_message_t object.
2011 * It can be useful to call this function in the case of a single
2012 * query object with many messages in the result, (such as iterating
2013 * over the entire database). Otherwise, it's fine to never call this
2014 * function and there will still be no memory leaks. (The memory from
2015 * the messages get reclaimed when the containing query is destroyed.)
2018 notmuch_message_destroy (notmuch_message_t *message);
2021 * @name Message Properties
2023 * This interface provides the ability to attach arbitrary (key,value)
2024 * string pairs to a message, to remove such pairs, and to iterate
2025 * over them. The caller should take some care as to what keys they
2026 * add or delete values for, as other subsystems or extensions may
2027 * depend on these properties.
2029 * Please see notmuch-properties(7) for more details about specific
2030 * properties and conventions around their use.
2035 * Retrieve the value for a single property key
2037 * *value* is set to a string owned by the message or NULL if there is
2038 * no such key. In the case of multiple values for the given key, the
2039 * first one is retrieved.
2042 * - NOTMUCH_STATUS_NULL_POINTER: *value* may not be NULL.
2043 * - NOTMUCH_STATUS_SUCCESS: No error occurred.
2044 * @since libnotmuch 4.4 (notmuch 0.23)
2047 notmuch_message_get_property (notmuch_message_t *message, const char *key, const char **value);
2050 * Add a (key,value) pair to a message
2053 * - NOTMUCH_STATUS_ILLEGAL_ARGUMENT: *key* may not contain an '=' character.
2054 * - NOTMUCH_STATUS_NULL_POINTER: Neither *key* nor *value* may be NULL.
2055 * - NOTMUCH_STATUS_SUCCESS: No error occurred.
2056 * @since libnotmuch 4.4 (notmuch 0.23)
2059 notmuch_message_add_property (notmuch_message_t *message, const char *key, const char *value);
2062 * Remove a (key,value) pair from a message.
2064 * It is not an error to remove a non-existent (key,value) pair
2067 * - NOTMUCH_STATUS_ILLEGAL_ARGUMENT: *key* may not contain an '=' character.
2068 * - NOTMUCH_STATUS_NULL_POINTER: Neither *key* nor *value* may be NULL.
2069 * - NOTMUCH_STATUS_SUCCESS: No error occurred.
2070 * @since libnotmuch 4.4 (notmuch 0.23)
2073 notmuch_message_remove_property (notmuch_message_t *message, const char *key, const char *value);
2076 * Remove all (key,value) pairs from the given message.
2078 * @param[in,out] message message to operate on.
2079 * @param[in] key key to delete properties for. If NULL, delete
2080 * properties for all keys
2082 * - NOTMUCH_STATUS_READ_ONLY_DATABASE: Database was opened in
2083 * read-only mode so message cannot be modified.
2084 * - NOTMUCH_STATUS_SUCCESS: No error occurred.
2086 * @since libnotmuch 4.4 (notmuch 0.23)
2089 notmuch_message_remove_all_properties (notmuch_message_t *message, const char *key);
2092 * Remove all (prefix*,value) pairs from the given message
2094 * @param[in,out] message message to operate on.
2095 * @param[in] prefix delete properties with keys that start with prefix.
2096 * If NULL, delete all properties
2098 * - NOTMUCH_STATUS_READ_ONLY_DATABASE: Database was opened in
2099 * read-only mode so message cannot be modified.
2100 * - NOTMUCH_STATUS_SUCCESS: No error occurred.
2102 * @since libnotmuch 5.1 (notmuch 0.26)
2105 notmuch_message_remove_all_properties_with_prefix (notmuch_message_t *message, const char *prefix);
2108 * Opaque message property iterator
2110 typedef struct _notmuch_string_map_iterator notmuch_message_properties_t;
2113 * Get the properties for *message*, returning a
2114 * notmuch_message_properties_t object which can be used to iterate
2115 * over all properties.
2117 * The notmuch_message_properties_t object is owned by the message and
2118 * as such, will only be valid for as long as the message is valid,
2119 * (which is until the query from which it derived is destroyed).
2121 * @param[in] message The message to examine
2122 * @param[in] key key or key prefix
2123 * @param[in] exact if TRUE, require exact match with key. Otherwise
2126 * Typical usage might be:
2128 * notmuch_message_properties_t *list;
2130 * for (list = notmuch_message_get_properties (message, "testkey1", TRUE);
2131 * notmuch_message_properties_valid (list); notmuch_message_properties_move_to_next (list)) {
2132 * printf("%s\n", notmuch_message_properties_value(list));
2135 * notmuch_message_properties_destroy (list);
2137 * Note that there's no explicit destructor needed for the
2138 * notmuch_message_properties_t object. (For consistency, we do
2139 * provide a notmuch_message_properities_destroy function, but there's
2140 * no good reason to call it if the message is about to be destroyed).
2142 * @since libnotmuch 4.4 (notmuch 0.23)
2144 notmuch_message_properties_t *
2145 notmuch_message_get_properties (notmuch_message_t *message, const char *key, notmuch_bool_t exact);
2148 * Return the number of properties named "key" belonging to the specific message.
2150 * @param[in] message The message to examine
2151 * @param[in] key key to count
2152 * @param[out] count The number of matching properties associated with this message.
2156 * NOTMUCH_STATUS_SUCCESS: successful count, possibly some other error.
2158 * @since libnotmuch 5.2 (notmuch 0.27)
2161 notmuch_message_count_properties (notmuch_message_t *message, const char *key, unsigned int *count);
2164 * Is the given *properties* iterator pointing at a valid (key,value)
2167 * When this function returns TRUE,
2168 * notmuch_message_properties_{key,value} will return a valid string,
2169 * and notmuch_message_properties_move_to_next will do what it
2170 * says. Whereas when this function returns FALSE, calling any of
2171 * these functions results in undefined behaviour.
2173 * See the documentation of notmuch_message_get_properties for example
2174 * code showing how to iterate over a notmuch_message_properties_t
2177 * @since libnotmuch 4.4 (notmuch 0.23)
2180 notmuch_message_properties_valid (notmuch_message_properties_t *properties);
2183 * Move the *properties* iterator to the next (key,value) pair
2185 * If *properties* is already pointing at the last pair then the iterator
2186 * will be moved to a point just beyond that last pair, (where
2187 * notmuch_message_properties_valid will return FALSE).
2189 * See the documentation of notmuch_message_get_properties for example
2190 * code showing how to iterate over a notmuch_message_properties_t object.
2192 * @since libnotmuch 4.4 (notmuch 0.23)
2195 notmuch_message_properties_move_to_next (notmuch_message_properties_t *properties);
2198 * Return the key from the current (key,value) pair.
2200 * this could be useful if iterating for a prefix
2202 * @since libnotmuch 4.4 (notmuch 0.23)
2205 notmuch_message_properties_key (notmuch_message_properties_t *properties);
2208 * Return the value from the current (key,value) pair.
2210 * This could be useful if iterating for a prefix.
2212 * @since libnotmuch 4.4 (notmuch 0.23)
2215 notmuch_message_properties_value (notmuch_message_properties_t *properties);
2219 * Destroy a notmuch_message_properties_t object.
2221 * It's not strictly necessary to call this function. All memory from
2222 * the notmuch_message_properties_t object will be reclaimed when the
2223 * containing message object is destroyed.
2225 * @since libnotmuch 4.4 (notmuch 0.23)
2228 notmuch_message_properties_destroy (notmuch_message_properties_t *properties);
2233 * Is the given 'tags' iterator pointing at a valid tag.
2235 * When this function returns TRUE, notmuch_tags_get will return a
2236 * valid string. Whereas when this function returns FALSE,
2237 * notmuch_tags_get will return NULL.
2239 * See the documentation of notmuch_message_get_tags for example code
2240 * showing how to iterate over a notmuch_tags_t object.
2243 notmuch_tags_valid (notmuch_tags_t *tags);
2246 * Get the current tag from 'tags' as a string.
2248 * Note: The returned string belongs to 'tags' and has a lifetime
2249 * identical to it (and the query to which it ultimately belongs).
2251 * See the documentation of notmuch_message_get_tags for example code
2252 * showing how to iterate over a notmuch_tags_t object.
2255 notmuch_tags_get (notmuch_tags_t *tags);
2258 * Move the 'tags' iterator to the next tag.
2260 * If 'tags' is already pointing at the last tag then the iterator
2261 * will be moved to a point just beyond that last tag, (where
2262 * notmuch_tags_valid will return FALSE and notmuch_tags_get will
2265 * See the documentation of notmuch_message_get_tags for example code
2266 * showing how to iterate over a notmuch_tags_t object.
2269 notmuch_tags_move_to_next (notmuch_tags_t *tags);
2272 * Destroy a notmuch_tags_t object.
2274 * It's not strictly necessary to call this function. All memory from
2275 * the notmuch_tags_t object will be reclaimed when the containing
2276 * message or query objects are destroyed.
2279 notmuch_tags_destroy (notmuch_tags_t *tags);
2282 * Store an mtime within the database for 'directory'.
2284 * The 'directory' should be an object retrieved from the database
2285 * with notmuch_database_get_directory for a particular path.
2287 * The intention is for the caller to use the mtime to allow efficient
2288 * identification of new messages to be added to the database. The
2289 * recommended usage is as follows:
2291 * o Read the mtime of a directory from the filesystem
2293 * o Call index_file for all mail files in the directory
2295 * o Call notmuch_directory_set_mtime with the mtime read from the
2298 * Then, when wanting to check for updates to the directory in the
2299 * future, the client can call notmuch_directory_get_mtime and know
2300 * that it only needs to add files if the mtime of the directory and
2301 * files are newer than the stored timestamp.
2303 * Note: The notmuch_directory_get_mtime function does not allow the
2304 * caller to distinguish a timestamp of 0 from a non-existent
2305 * timestamp. So don't store a timestamp of 0 unless you are
2306 * comfortable with that.
2310 * NOTMUCH_STATUS_SUCCESS: mtime successfully stored in database.
2312 * NOTMUCH_STATUS_XAPIAN_EXCEPTION: A Xapian exception
2313 * occurred, mtime not stored.
2315 * NOTMUCH_STATUS_READ_ONLY_DATABASE: Database was opened in read-only
2316 * mode so directory mtime cannot be modified.
2319 notmuch_directory_set_mtime (notmuch_directory_t *directory,
2323 * Get the mtime of a directory, (as previously stored with
2324 * notmuch_directory_set_mtime).
2326 * Returns 0 if no mtime has previously been stored for this
2330 notmuch_directory_get_mtime (notmuch_directory_t *directory);
2333 * Get a notmuch_filenames_t iterator listing all the filenames of
2334 * messages in the database within the given directory.
2336 * The returned filenames will be the basename-entries only (not
2339 * Returns NULL if it triggers a Xapian exception
2341 notmuch_filenames_t *
2342 notmuch_directory_get_child_files (notmuch_directory_t *directory);
2345 * Get a notmuch_filenames_t iterator listing all the filenames of
2346 * sub-directories in the database within the given directory.
2348 * The returned filenames will be the basename-entries only (not
2351 * Returns NULL if it triggers a Xapian exception
2353 notmuch_filenames_t *
2354 notmuch_directory_get_child_directories (notmuch_directory_t *directory);
2357 * Delete directory document from the database, and destroy the
2358 * notmuch_directory_t object. Assumes any child directories and files
2359 * have been deleted by the caller.
2361 * @since libnotmuch 4.3 (notmuch 0.21)
2364 notmuch_directory_delete (notmuch_directory_t *directory);
2367 * Destroy a notmuch_directory_t object.
2370 notmuch_directory_destroy (notmuch_directory_t *directory);
2373 * Is the given 'filenames' iterator pointing at a valid filename.
2375 * When this function returns TRUE, notmuch_filenames_get will return
2376 * a valid string. Whereas when this function returns FALSE,
2377 * notmuch_filenames_get will return NULL.
2379 * It is acceptable to pass NULL for 'filenames', in which case this
2380 * function will always return FALSE.
2383 notmuch_filenames_valid (notmuch_filenames_t *filenames);
2386 * Get the current filename from 'filenames' as a string.
2388 * Note: The returned string belongs to 'filenames' and has a lifetime
2389 * identical to it (and the directory to which it ultimately belongs).
2391 * It is acceptable to pass NULL for 'filenames', in which case this
2392 * function will always return NULL.
2395 notmuch_filenames_get (notmuch_filenames_t *filenames);
2398 * Move the 'filenames' iterator to the next filename.
2400 * If 'filenames' is already pointing at the last filename then the
2401 * iterator will be moved to a point just beyond that last filename,
2402 * (where notmuch_filenames_valid will return FALSE and
2403 * notmuch_filenames_get will return NULL).
2405 * It is acceptable to pass NULL for 'filenames', in which case this
2406 * function will do nothing.
2409 notmuch_filenames_move_to_next (notmuch_filenames_t *filenames);
2412 * Destroy a notmuch_filenames_t object.
2414 * It's not strictly necessary to call this function. All memory from
2415 * the notmuch_filenames_t object will be reclaimed when the
2416 * containing directory object is destroyed.
2418 * It is acceptable to pass NULL for 'filenames', in which case this
2419 * function will do nothing.
2422 notmuch_filenames_destroy (notmuch_filenames_t *filenames);
2426 * set config 'key' to 'value'
2428 * @since libnotmuch 4.4 (notmuch 0.23)
2429 * @retval #NOTMUCH_STATUS_READ_ONLY_DATABASE: Database was opened in
2430 * read-only mode so message cannot be modified.
2431 * @retval #NOTMUCH_STATUS_XAPIAN_EXCEPTION: an exception was thrown
2432 * accessing the database.
2433 * @retval #NOTMUCH_STATUS_SUCCESS
2436 notmuch_database_set_config (notmuch_database_t *db, const char *key, const char *value);
2439 * retrieve config item 'key', assign to 'value'
2441 * keys which have not been previously set with n_d_set_config will
2442 * return an empty string.
2444 * return value is allocated by malloc and should be freed by the
2447 * @since libnotmuch 4.4 (notmuch 0.23)
2451 notmuch_database_get_config (notmuch_database_t *db, const char *key, char **value);
2454 * Create an iterator for all config items with keys matching a given prefix
2456 * @since libnotmuch 4.4 (notmuch 0.23)
2459 notmuch_database_get_config_list (notmuch_database_t *db, const char *prefix,
2460 notmuch_config_list_t **out);
2463 * Is 'config_list' iterator valid (i.e. _key, _value, _move_to_next can be called).
2465 * @since libnotmuch 4.4 (notmuch 0.23)
2468 notmuch_config_list_valid (notmuch_config_list_t *config_list);
2471 * return key for current config pair
2473 * return value is owned by the iterator, and will be destroyed by the
2474 * next call to notmuch_config_list_key or notmuch_config_list_destroy.
2476 * @since libnotmuch 4.4 (notmuch 0.23)
2479 notmuch_config_list_key (notmuch_config_list_t *config_list);
2482 * return 'value' for current config pair
2484 * return value is owned by the iterator, and will be destroyed by the
2485 * next call to notmuch_config_list_value or notmuch config_list_destroy
2487 * @since libnotmuch 4.4 (notmuch 0.23)
2488 * @retval NULL for errors
2491 notmuch_config_list_value (notmuch_config_list_t *config_list);
2495 * move 'config_list' iterator to the next pair
2497 * @since libnotmuch 4.4 (notmuch 0.23)
2500 notmuch_config_list_move_to_next (notmuch_config_list_t *config_list);
2503 * free any resources held by 'config_list'
2505 * @since libnotmuch 4.4 (notmuch 0.23)
2508 notmuch_config_list_destroy (notmuch_config_list_t *config_list);
2511 * Configuration keys known to libnotmuch
2513 typedef enum _notmuch_config_key {
2514 NOTMUCH_CONFIG_FIRST,
2515 NOTMUCH_CONFIG_DATABASE_PATH = NOTMUCH_CONFIG_FIRST,
2516 NOTMUCH_CONFIG_MAIL_ROOT,
2517 NOTMUCH_CONFIG_HOOK_DIR,
2518 NOTMUCH_CONFIG_BACKUP_DIR,
2519 NOTMUCH_CONFIG_EXCLUDE_TAGS,
2520 NOTMUCH_CONFIG_NEW_TAGS,
2521 NOTMUCH_CONFIG_NEW_IGNORE,
2522 NOTMUCH_CONFIG_SYNC_MAILDIR_FLAGS,
2523 NOTMUCH_CONFIG_PRIMARY_EMAIL,
2524 NOTMUCH_CONFIG_OTHER_EMAIL,
2525 NOTMUCH_CONFIG_USER_NAME,
2526 NOTMUCH_CONFIG_AUTOCOMMIT,
2528 } notmuch_config_key_t;
2531 * get a configuration value from an open database.
2533 * This value reflects all configuration information given at the time
2534 * the database was opened.
2536 * @param[in] notmuch database
2537 * @param[in] key configuration key
2539 * @since libnotmuch 5.4 (notmuch 0.32)
2541 * @retval NULL if 'key' unknown or if no value is known for
2542 * 'key'. Otherwise returns a string owned by notmuch which should
2543 * not be modified nor freed by the caller.
2546 notmuch_config_get (notmuch_database_t *notmuch, notmuch_config_key_t key);
2549 * set a configuration value from in an open database.
2551 * This value reflects all configuration information given at the time
2552 * the database was opened.
2554 * @param[in,out] notmuch database open read/write
2555 * @param[in] key configuration key
2556 * @param[in] val configuration value
2558 * @since libnotmuch 5.4 (notmuch 0.32)
2560 * @retval returns any return value for notmuch_database_set_config.
2563 notmuch_config_set (notmuch_database_t *notmuch, notmuch_config_key_t key, const char *val);
2566 * Returns an iterator for a ';'-delimited list of configuration values
2568 * These values reflect all configuration information given at the
2569 * time the database was opened.
2571 * @param[in] notmuch database
2572 * @param[in] key configuration key
2574 * @since libnotmuch 5.4 (notmuch 0.32)
2576 * @retval NULL in case of error.
2578 notmuch_config_values_t *
2579 notmuch_config_get_values (notmuch_database_t *notmuch, notmuch_config_key_t key);
2582 * Returns an iterator for a ';'-delimited list of configuration values
2584 * These values reflect all configuration information given at the
2585 * time the database was opened.
2587 * @param[in] notmuch database
2588 * @param[in] key configuration key
2590 * @since libnotmuch 5.4 (notmuch 0.32)
2592 * @retval NULL in case of error.
2594 notmuch_config_values_t *
2595 notmuch_config_get_values_string (notmuch_database_t *notmuch, const char *key);
2598 * Is the given 'config_values' iterator pointing at a valid element.
2600 * @param[in] values iterator
2602 * @since libnotmuch 5.4 (notmuch 0.32)
2604 * @retval FALSE if passed a NULL pointer, or the iterator is exhausted.
2608 notmuch_config_values_valid (notmuch_config_values_t *values);
2611 * Get the current value from the 'values' iterator
2613 * @param[in] values iterator
2615 * @since libnotmuch 5.4 (notmuch 0.32)
2617 * @retval a string with the same lifetime as the iterator
2620 notmuch_config_values_get (notmuch_config_values_t *values);
2623 * Move the 'values' iterator to the next element
2625 * @param[in,out] values iterator
2627 * @since libnotmuch 5.4 (notmuch 0.32)
2631 notmuch_config_values_move_to_next (notmuch_config_values_t *values);
2635 * reset the 'values' iterator to the first element
2637 * @param[in,out] values iterator. A NULL value is ignored.
2639 * @since libnotmuch 5.4 (notmuch 0.32)
2643 notmuch_config_values_start (notmuch_config_values_t *values);
2646 * Destroy a config values iterator, along with any associated
2649 * @param[in,out] values iterator
2651 * @since libnotmuch 5.4 (notmuch 0.32)
2654 notmuch_config_values_destroy (notmuch_config_values_t *values);
2658 * Returns an iterator for a (key, value) configuration pairs
2660 * @param[in] notmuch database
2661 * @param[in] prefix prefix for keys. Pass "" for all keys.
2663 * @since libnotmuch 5.4 (notmuch 0.32)
2665 * @retval NULL in case of error.
2667 notmuch_config_pairs_t *
2668 notmuch_config_get_pairs (notmuch_database_t *notmuch,
2669 const char *prefix);
2672 * Is the given 'config_pairs' iterator pointing at a valid element.
2674 * @param[in] pairs iterator
2676 * @since libnotmuch 5.4 (notmuch 0.32)
2678 * @retval FALSE if passed a NULL pointer, or the iterator is exhausted.
2682 notmuch_config_pairs_valid (notmuch_config_pairs_t *pairs);
2685 * Move the 'config_pairs' iterator to the next element
2687 * @param[in,out] pairs iterator
2689 * @since libnotmuch 5.4 (notmuch 0.32)
2693 notmuch_config_pairs_move_to_next (notmuch_config_pairs_t *pairs);
2696 * Get the current key from the 'config_pairs' iterator
2698 * @param[in] pairs iterator
2700 * @since libnotmuch 5.4 (notmuch 0.32)
2702 * @retval a string with the same lifetime as the iterator
2705 notmuch_config_pairs_key (notmuch_config_pairs_t *pairs);
2708 * Get the current value from the 'config_pairs' iterator
2710 * @param[in] pairs iterator
2712 * @since libnotmuch 5.4 (notmuch 0.32)
2714 * @retval a string with the same lifetime as the iterator
2717 notmuch_config_pairs_value (notmuch_config_pairs_t *pairs);
2720 * Destroy a config_pairs iterator, along with any associated
2723 * @param[in,out] pairs iterator
2725 * @since libnotmuch 5.4 (notmuch 0.32)
2728 notmuch_config_pairs_destroy (notmuch_config_pairs_t *pairs);
2731 * get a configuration value from an open database as Boolean
2733 * This value reflects all configuration information given at the time
2734 * the database was opened.
2736 * @param[in] notmuch database
2737 * @param[in] key configuration key
2738 * @param[out] val configuration value, converted to Boolean
2740 * @since libnotmuch 5.4 (notmuch 0.32)
2742 * @retval #NOTMUCH_STATUS_ILLEGAL_ARGUMENT if either key is unknown
2743 * or the corresponding value does not convert to Boolean.
2746 notmuch_config_get_bool (notmuch_database_t *notmuch,
2747 notmuch_config_key_t key,
2748 notmuch_bool_t *val);
2751 * return the path of the config file loaded, if any
2753 * @retval NULL if no config file was loaded
2756 notmuch_config_path (notmuch_database_t *notmuch);
2759 * get the current default indexing options for a given database.
2761 * This object will survive until the database itself is destroyed,
2762 * but the caller may also release it earlier with
2763 * notmuch_indexopts_destroy.
2765 * This object represents a set of options on how a message can be
2766 * added to the index. At the moment it is a featureless stub.
2768 * @since libnotmuch 5.1 (notmuch 0.26)
2769 * @retval NULL in case of error
2771 notmuch_indexopts_t *
2772 notmuch_database_get_default_indexopts (notmuch_database_t *db);
2775 * Stating a policy about how to decrypt messages.
2777 * See index.decrypt in notmuch-config(1) for more details.
2780 NOTMUCH_DECRYPT_FALSE,
2781 NOTMUCH_DECRYPT_TRUE,
2782 NOTMUCH_DECRYPT_AUTO,
2783 NOTMUCH_DECRYPT_NOSTASH,
2784 } notmuch_decryption_policy_t;
2787 * Specify whether to decrypt encrypted parts while indexing.
2789 * Be aware that the index is likely sufficient to reconstruct the
2790 * cleartext of the message itself, so please ensure that the notmuch
2791 * message index is adequately protected. DO NOT SET THIS FLAG TO TRUE
2792 * without considering the security of your index.
2794 * @since libnotmuch 5.1 (notmuch 0.26)
2797 notmuch_indexopts_set_decrypt_policy (notmuch_indexopts_t *indexopts,
2798 notmuch_decryption_policy_t decrypt_policy);
2801 * Return whether to decrypt encrypted parts while indexing.
2802 * see notmuch_indexopts_set_decrypt_policy.
2804 * @since libnotmuch 5.1 (notmuch 0.26)
2806 notmuch_decryption_policy_t
2807 notmuch_indexopts_get_decrypt_policy (const notmuch_indexopts_t *indexopts);
2810 * Destroy a notmuch_indexopts_t object.
2812 * @since libnotmuch 5.1 (notmuch 0.26)
2815 notmuch_indexopts_destroy (notmuch_indexopts_t *options);
2819 * interrogate the library for compile time features
2821 * @since libnotmuch 4.4 (notmuch 0.23)
2824 notmuch_built_with (const char *name);
2827 #pragma GCC visibility pop