X-Git-Url: https://git.notmuchmail.org/git?p=notmuch;a=blobdiff_plain;f=lib%2Fnotmuch.h;h=babd2086faf4cdaca964dc11638128542b8504d9;hp=bfa2ced88a3f3893bc43b63ec495ce68fb41cd29;hb=75a05526334b721d719d6c8a8098ff64573e6c1e;hpb=e59cc0031fbf84f49e32dedb9927f427d2c49309

diff --git a/lib/notmuch.h b/lib/notmuch.h
index bfa2ced8..babd2086 100644
--- a/lib/notmuch.h
+++ b/lib/notmuch.h
@@ -266,9 +266,10 @@ notmuch_directory_t *
 notmuch_database_get_directory (notmuch_database_t *database,
 				const char *path);
 
-/* Add a new message to the given notmuch database.
+/* Add a new message to the given notmuch database or associate an
+ * additional filename with an existing message.
  *
- * Here,'filename' should be a path relative to the path of
+ * Here, 'filename' should be a path relative to the path of
  * 'database' (see notmuch_database_get_path), or else should be an
  * absolute filename with initial components that match the path of
  * 'database'.
@@ -278,6 +279,10 @@ notmuch_database_get_directory (notmuch_database_t *database,
  * notmuch database will reference the filename, and will not copy the
  * entire contents of the file.
  *
+ * If another message with the same message ID already exists in the
+ * database, rather than creating a new message, this adds 'filename'
+ * to the list of the filenames for the existing message.
+ *
  * If 'message' is not NULL, then, on successful return
  * (NOTMUCH_STATUS_SUCCESS or NOTMUCH_STATUS_DUPLICATE_MESSAGE_ID) '*message'
  * will be initialized to a message object that can be used for things
@@ -295,7 +300,7 @@ notmuch_database_get_directory (notmuch_database_t *database,
  * NOTMUCH_STATUS_DUPLICATE_MESSAGE_ID: Message has the same message
  *	ID as another message already in the database. The new
  *	filename was successfully added to the message in the database
- *	(if not already present).
+ *	(if not already present) and the existing message is returned.
  *
  * NOTMUCH_STATUS_FILE_ERROR: an error occurred trying to open the
  *	file, (such as permission denied, or file not found,
@@ -312,14 +317,14 @@ notmuch_database_add_message (notmuch_database_t *database,
 			      const char *filename,
 			      notmuch_message_t **message);
 
-/* Remove a message from the given notmuch database.
+/* Remove a message filename from the given notmuch database. If the
+ * message has no more filenames, remove the message.
  *
- * Note that only this particular filename association is removed from
- * the database. If the same message (as determined by the message ID)
- * is still available via other filenames, then the message will
- * persist in the database for those filenames. When the last filename
- * is removed for a particular message, the database content for that
- * message will be entirely removed.
+ * If the same message (as determined by the message ID) is still
+ * available via other filenames, then the message will persist in the
+ * database for those filenames. When the last filename is removed for
+ * a particular message, the database content for that message will be
+ * entirely removed.
  *
  * Return value:
  *
@@ -342,19 +347,57 @@ notmuch_database_remove_message (notmuch_database_t *database,
 
 /* Find a message with the given message_id.
  *
- * If the database contains a message with the given message_id, then
- * a new notmuch_message_t object is returned. The caller should call
- * notmuch_message_destroy when done with the message.
+ * If a message with the given message_id is found then, on successful return
+ * (NOTMUCH_STATUS_SUCCESS) '*message' will be initialized to a message
+ * object.  The caller should call notmuch_message_destroy when done with the
+ * message.
+ *
+ * On any failure or when the message is not found, this function initializes
+ * '*message' to NULL. This means, when NOTMUCH_STATUS_SUCCESS is returned, the
+ * caller is supposed to check '*message' for NULL to find out whether the
+ * message with the given message_id was found.
+ *
+ * Return value:
+ *
+ * NOTMUCH_STATUS_SUCCESS: Successful return, check '*message'.
+ *
+ * NOTMUCH_STATUS_NULL_POINTER: The given 'message' argument is NULL
  *
- * This function returns NULL in the following situations:
+ * NOTMUCH_STATUS_OUT_OF_MEMORY: Out of memory, creating message object
  *
- *	* No message is found with the given message_id
- *	* An out-of-memory situation occurs
- *	* A Xapian exception occurs
+ * NOTMUCH_STATUS_XAPIAN_EXCEPTION: A Xapian exception occurred
  */
-notmuch_message_t *
+notmuch_status_t
 notmuch_database_find_message (notmuch_database_t *database,
-			       const char *message_id);
+			       const char *message_id,
+			       notmuch_message_t **message);
+
+/* Find a message with the given filename.
+ *
+ * If the database contains a message with the given filename then, on
+ * successful return (NOTMUCH_STATUS_SUCCESS) '*message' will be initialized to
+ * a message object. The caller should call notmuch_message_destroy when done
+ * with the message.
+ *
+ * On any failure or when the message is not found, this function initializes
+ * '*message' to NULL. This means, when NOTMUCH_STATUS_SUCCESS is returned, the
+ * caller is supposed to check '*message' for NULL to find out whether the
+ * message with the given filename is found.
+ *
+ * Return value:
+ *
+ * NOTMUCH_STATUS_SUCCESS: Successful return, check '*message'
+ *
+ * NOTMUCH_STATUS_NULL_POINTER: The given 'message' argument is NULL
+ *
+ * NOTMUCH_STATUS_OUT_OF_MEMORY: Out of memory, creating the message object
+ *
+ * NOTMUCH_STATUS_XAPIAN_EXCEPTION: A Xapian exception occurred
+ */
+notmuch_status_t
+notmuch_database_find_message_by_filename (notmuch_database_t *notmuch,
+					   const char *filename,
+					   notmuch_message_t **message);
 
 /* Return a list of all tags found in the database.
  *
@@ -406,6 +449,13 @@ typedef enum {
 const char *
 notmuch_query_get_query_string (notmuch_query_t *query);
 
+/* Specify whether to results should omit the excluded results rather
+ * than just marking them excluded. This is useful for passing a
+ * notmuch_messages_t not containing the excluded messages to other
+ * functions. */
+void
+notmuch_query_set_omit_excluded_messages (notmuch_query_t *query, notmuch_bool_t omit);
+
 /* Specify the sorting desired for this query. */
 void
 notmuch_query_set_sort (notmuch_query_t *query, notmuch_sort_t sort);
@@ -414,6 +464,12 @@ notmuch_query_set_sort (notmuch_query_t *query, notmuch_sort_t sort);
 notmuch_sort_t
 notmuch_query_get_sort (notmuch_query_t *query);
 
+/* Add a tag that will be excluded from the query results by default.
+ * This exclusion will be overridden if this tag appears explicitly in
+ * the query. */
+void
+notmuch_query_add_tag_exclude (notmuch_query_t *query, const char *tag);
+
 /* Execute a query for threads, returning a notmuch_threads_t object
  * which can be used to iterate over the results. The returned threads
  * object is owned by the query and as such, will only be valid until
@@ -566,6 +622,20 @@ notmuch_threads_destroy (notmuch_threads_t *threads);
 unsigned
 notmuch_query_count_messages (notmuch_query_t *query);
  
+/* Return the number of threads matching a search.
+ *
+ * This function performs a search and returns the number of unique thread IDs
+ * in the matching messages. This is the same as number of threads matching a
+ * search.
+ *
+ * Note that this is a significantly heavier operation than
+ * notmuch_query_count_messages().
+ *
+ * If an error occurs, this function may return 0.
+ */
+unsigned
+notmuch_query_count_threads (notmuch_query_t *query);
+
 /* Get the thread ID of 'thread'.
  *
  * The returned string belongs to 'thread' and as such, should not be
@@ -602,8 +672,10 @@ notmuch_thread_get_toplevel_messages (notmuch_thread_t *thread);
 /* Get the number of messages in 'thread' that matched the search.
  *
  * This count includes only the messages in this thread that were
- * matched by the search from which the thread was created. Contrast
- * with notmuch_thread_get_total_messages() .
+ * matched by the search from which the thread was created and were
+ * not excluded by any exclude tags passed in with the query (see
+ * notmuch_query_add_tag_exclude). Contrast with
+ * notmuch_thread_get_total_messages() .
  */
 int
 notmuch_thread_get_matched_messages (notmuch_thread_t *thread);
@@ -832,7 +904,8 @@ notmuch_message_get_filenames (notmuch_message_t *message);
 
 /* Message flags */
 typedef enum _notmuch_message_flag {
-    NOTMUCH_MESSAGE_FLAG_MATCH
+    NOTMUCH_MESSAGE_FLAG_MATCH,
+    NOTMUCH_MESSAGE_FLAG_EXCLUDED
 } notmuch_message_flag_t;
 
 /* Get a value of a flag for the email corresponding to 'message'. */