lib: update transaction documentation

[notmuch] / lib / notmuch.h

diff --git a/lib/notmuch.h b/lib/notmuch.h
index da556e5082713bdcb108db0afbaa674c30bf8904..3b28bea343bc9c329fc00ea3972d671a0cecde9a 100644 (file)
--- a/lib/notmuch.h
+++ b/lib/notmuch.h
@@ -212,6 +212,10 @@ typedef enum _notmuch_status {
      * Unable to load a config file
      */
     NOTMUCH_STATUS_NO_CONFIG,
+    /**
+     * Unable to load a database
+     */
+    NOTMUCH_STATUS_NO_DATABASE,
     /**
      * Database exists, so not (re)-created
      */
@@ -245,6 +249,7 @@ typedef struct _notmuch_directory notmuch_directory_t;
 typedef struct _notmuch_filenames notmuch_filenames_t;
 typedef struct _notmuch_config_list notmuch_config_list_t;
 typedef struct _notmuch_config_values notmuch_config_values_t;
+typedef struct _notmuch_config_pairs notmuch_config_pairs_t;
 typedef struct _notmuch_indexopts notmuch_indexopts_t;
 #endif /* __DOXYGEN__ */
 
@@ -449,7 +454,12 @@ notmuch_database_open_with_config (const char *database_path,
  *
  * For description of arguments, @see notmuch_database_open_with_config
  *
- * @retval NOTMUCH_STATUS_SUCCESS: Successfully loaded (some) configuration.
+ * @retval NOTMUCH_STATUS_SUCCESS: Successfully loaded configuration.
+ *
+ * @retval NOTMUCH_STATUS_NO_CONFIG: No config file was loaded. Not fatal.
+ *
+ * @retval NOTMUCH_STATUS_NO_DATABASE: No config information was
+ *     loaded from a database. Not fatal.
  *
  * @retval NOTMUCH_STATUS_OUT_OF_MEMORY: Out of memory.
  *
@@ -519,11 +529,11 @@ notmuch_database_status_string (const notmuch_database_t *notmuch);
  * have no effect.
  *
  * For writable databases, notmuch_database_close commits all changes
- * to disk before closing the database.  If the caller is currently in
- * an atomic section (there was a notmuch_database_begin_atomic
- * without a matching notmuch_database_end_atomic), this will discard
- * changes made in that atomic section (but still commit changes made
- * prior to entering the atomic section).
+ * to disk before closing the database, unless the caller is currently
+ * in an atomic section (there was a notmuch_database_begin_atomic
+ * without a matching notmuch_database_end_atomic). In this case
+ * changes since the last commit are discarded. @see
+ * notmuch_database_end_atomic for more information.
  *
  * Return value:
  *
@@ -660,7 +670,10 @@ notmuch_status_t
 notmuch_database_begin_atomic (notmuch_database_t *notmuch);
 
 /**
- * Indicate the end of an atomic database operation.
+ * Indicate the end of an atomic database operation.  If repeated
+ * (with matching notmuch_database_begin_atomic) "database.autocommit"
+ * times, commit the the transaction and all previous (non-cancelled)
+ * transactions to the database.
  *
  * Return value:
  *
@@ -2494,7 +2507,6 @@ notmuch_config_list_move_to_next (notmuch_config_list_t *config_list);
 void
 notmuch_config_list_destroy (notmuch_config_list_t *config_list);
 
-
 /**
  * Configuration keys known to libnotmuch
  */
@@ -2511,6 +2523,7 @@ typedef enum _notmuch_config_key {
     NOTMUCH_CONFIG_PRIMARY_EMAIL,
     NOTMUCH_CONFIG_OTHER_EMAIL,
     NOTMUCH_CONFIG_USER_NAME,
+    NOTMUCH_CONFIG_AUTOCOMMIT,
     NOTMUCH_CONFIG_LAST
 } notmuch_config_key_t;
 
@@ -2565,6 +2578,22 @@ notmuch_config_set (notmuch_database_t *notmuch, notmuch_config_key_t key, const
 notmuch_config_values_t *
 notmuch_config_get_values (notmuch_database_t *notmuch, notmuch_config_key_t key);
 
+/**
+ * Returns an iterator for a ';'-delimited list of configuration values
+ *
+ * These values reflect all configuration information given at the
+ * time the database was opened.
+ *
+ * @param[in] notmuch database
+ * @param[in] key configuration key
+ *
+ * @since libnotmuch 5.4 (notmuch 0.32)
+ *
+ * @retval NULL in case of error.
+ */
+notmuch_config_values_t *
+notmuch_config_get_values_string (notmuch_database_t *notmuch, const char *key);
+
 /**
  * Is the given 'config_values' iterator pointing at a valid element.
  *
@@ -2624,6 +2653,80 @@ notmuch_config_values_start (notmuch_config_values_t *values);
 void
 notmuch_config_values_destroy (notmuch_config_values_t *values);
 
+
+/**
+ * Returns an iterator for a (key, value) configuration pairs
+ *
+ * @param[in] notmuch database
+ * @param[in] prefix prefix for keys. Pass "" for all keys.
+ *
+ * @since libnotmuch 5.4 (notmuch 0.32)
+ *
+ * @retval NULL in case of error.
+ */
+notmuch_config_pairs_t *
+notmuch_config_get_pairs (notmuch_database_t *notmuch,
+                         const char *prefix);
+
+/**
+ * Is the given 'config_pairs' iterator pointing at a valid element.
+ *
+ * @param[in] pairs iterator
+ *
+ * @since libnotmuch 5.4 (notmuch 0.32)
+ *
+ * @retval FALSE if passed a NULL pointer, or the iterator is exhausted.
+ *
+ */
+notmuch_bool_t
+notmuch_config_pairs_valid (notmuch_config_pairs_t *pairs);
+
+/**
+ * Move the 'config_pairs' iterator to the next element
+ *
+ * @param[in,out] pairs iterator
+ *
+ * @since libnotmuch 5.4 (notmuch 0.32)
+ *
+ */
+void
+notmuch_config_pairs_move_to_next (notmuch_config_pairs_t *pairs);
+
+/**
+ * Get the current key from the 'config_pairs' iterator
+ *
+ * @param[in] pairs iterator
+ *
+ * @since libnotmuch 5.4 (notmuch 0.32)
+ *
+ * @retval a string with the same lifetime as the iterator
+ */
+const char *
+notmuch_config_pairs_key (notmuch_config_pairs_t *pairs);
+
+/**
+ * Get the current value from the 'config_pairs' iterator
+ *
+ * @param[in] pairs iterator
+ *
+ * @since libnotmuch 5.4 (notmuch 0.32)
+ *
+ * @retval a string with the same lifetime as the iterator
+ */
+const char *
+notmuch_config_pairs_value (notmuch_config_pairs_t *pairs);
+
+/**
+ * Destroy a config_pairs iterator, along with any associated
+ * resources.
+ *
+ * @param[in,out] pairs iterator
+ *
+ * @since libnotmuch 5.4 (notmuch 0.32)
+ */
+void
+notmuch_config_pairs_destroy (notmuch_config_pairs_t *pairs);
+
 /**
  * get a configuration value from an open database as Boolean
  *
@@ -2643,6 +2746,15 @@ notmuch_status_t
 notmuch_config_get_bool (notmuch_database_t *notmuch,
                         notmuch_config_key_t key,
                         notmuch_bool_t *val);
+
+/**
+ * return the path of the config file loaded, if any
+ *
+ * @retval NULL if no config file was loaded
+ */
+const char *
+notmuch_config_path (notmuch_database_t *notmuch);
+
 /**
  * get the current default indexing options for a given database.
  *