X-Git-Url: https://git.notmuchmail.org/git?p=notmuch;a=blobdiff_plain;f=lib%2Fnotmuch.h;h=d813612b7e8973e04db0abaa7bf66daba44968a5;hp=d4a97cb819de3fcb168e9c56574975aa0dcaeff8;hb=87bdfbc91f65cb1031ef0ac8a804759f2061ac10;hpb=44cfa90bdc4d814217b05fdc36f1595c9b54d729

diff --git a/lib/notmuch.h b/lib/notmuch.h
index d4a97cb8..d813612b 100644
--- a/lib/notmuch.h
+++ b/lib/notmuch.h
@@ -43,6 +43,8 @@ NOTMUCH_BEGIN_DECLS
 
 #include <time.h>
 
+#pragma GCC visibility push(default)
+
 #ifndef FALSE
 #define FALSE 0
 #endif
@@ -55,8 +57,8 @@ NOTMUCH_BEGIN_DECLS
  * The library version number.  This must agree with the soname
  * version in Makefile.local.
  */
-#define LIBNOTMUCH_MAJOR_VERSION	4
-#define LIBNOTMUCH_MINOR_VERSION	3
+#define LIBNOTMUCH_MAJOR_VERSION	5
+#define LIBNOTMUCH_MINOR_VERSION	0
 #define LIBNOTMUCH_MICRO_VERSION	0
 
 
@@ -126,15 +128,15 @@ typedef enum _notmuch_status {
     NOTMUCH_STATUS_READ_ONLY_DATABASE,
     /**
      * A Xapian exception occurred.
+     *
+     * @todo We don't really want to expose this lame XAPIAN_EXCEPTION
+     * value. Instead we should map to things like DATABASE_LOCKED or
+     * whatever.
      */
     NOTMUCH_STATUS_XAPIAN_EXCEPTION,
     /**
      * An error occurred trying to read or write to a file (this could
      * be file not found, permission denied, etc.)
-     *
-     * @todo We don't really want to expose this lame XAPIAN_EXCEPTION
-     * value. Instead we should map to things like DATABASE_LOCKED or
-     * whatever.
      */
     NOTMUCH_STATUS_FILE_ERROR,
     /**
@@ -179,6 +181,16 @@ typedef enum _notmuch_status {
      * passed to a function expecting an absolute path.
      */
     NOTMUCH_STATUS_PATH_ERROR,
+    /**
+     * The requested operation was ignored. Depending on the function,
+     * this may not be an actual error.
+     */
+    NOTMUCH_STATUS_IGNORED,
+    /**
+     * One of the arguments violates the preconditions for the
+     * function, in a way not covered by a more specific argument.
+     */
+    NOTMUCH_STATUS_ILLEGAL_ARGUMENT,
     /**
      * Not an actual status value. Just a way to find out how many
      * valid status values there are.
@@ -332,7 +344,9 @@ notmuch_database_status_string (const notmuch_database_t *notmuch);
  * functions on objects derived from this database may either behave
  * as if the database had not been closed (e.g., if the required data
  * has been cached) or may fail with a
- * NOTMUCH_STATUS_XAPIAN_EXCEPTION.
+ * NOTMUCH_STATUS_XAPIAN_EXCEPTION. The only further operation
+ * permitted on the database itself is to call
+ * notmuch_database_destroy.
  *
  * notmuch_database_close can be called multiple times.  Later calls
  * have no effect.
@@ -805,10 +819,20 @@ notmuch_query_get_sort (const 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
+ * This exclusion will be ignored if this tag appears explicitly in
  * the query.
+ *
+ * @returns
+ *
+ * NOTMUCH_STATUS_SUCCESS: excluded was added successfully.
+ *
+ * NOTMUCH_STATUS_XAPIAN_EXCEPTION: a Xapian exception occured.
+ *      Most likely a problem lazily parsing the query string.
+ *
+ * NOTMUCH_STATUS_IGNORED: tag is explicitly present in the query, so
+ *		not excluded.
  */
-void
+notmuch_status_t
 notmuch_query_add_tag_exclude (notmuch_query_t *query, const char *tag);
 
 /**
@@ -848,24 +872,22 @@ notmuch_query_add_tag_exclude (notmuch_query_t *query, const char *tag);
  * notmuch_threads_destroy function, but there's no good reason
  * to call it if the query is about to be destroyed).
  *
- * @since libnotmuch 4.2 (notmuch 0.20)
+ * @since libnotmuch 5.0 (notmuch 0.25)
  */
 notmuch_status_t
-notmuch_query_search_threads_st (notmuch_query_t *query,
-				 notmuch_threads_t **out);
+notmuch_query_search_threads (notmuch_query_t *query,
+			      notmuch_threads_t **out);
 
 /**
- * Like notmuch_query_search_threads_st, but without a status return.
- *
- * If a Xapian exception occurs this function will return NULL.
+ * Deprecated alias for notmuch_query_search_threads.
  *
- * @deprecated Deprecated as of libnotmuch 4.3 (notmuch 0.21). Please
- * use notmuch_query_search_threads_st instead.
+ * @deprecated Deprecated as of libnotmuch 5 (notmuch 0.25). Please
+ * use notmuch_query_search_threads instead.
  *
  */
-NOTMUCH_DEPRECATED(4,3)
-notmuch_threads_t *
-notmuch_query_search_threads (notmuch_query_t *query);
+NOTMUCH_DEPRECATED(5,0)
+notmuch_status_t
+notmuch_query_search_threads_st (notmuch_query_t *query, notmuch_threads_t **out);
 
 /**
  * Execute a query for messages, returning a notmuch_messages_t object
@@ -906,23 +928,23 @@ notmuch_query_search_threads (notmuch_query_t *query);
  *
  * If a Xapian exception occurs this function will return NULL.
  *
- * @since libnotmuch 4.2 (notmuch 0.20)
+ * @since libnotmuch 5 (notmuch 0.25)
  */
 notmuch_status_t
-notmuch_query_search_messages_st (notmuch_query_t *query,
-				  notmuch_messages_t **out);
+notmuch_query_search_messages (notmuch_query_t *query,
+			       notmuch_messages_t **out);
 /**
- * Like notmuch_query_search_messages, but without a status return.
+ * Deprecated alias for notmuch_query_search_messages
  *
- * If a Xapian exception occurs this function will return NULL.
- *
- * @deprecated Deprecated as of libnotmuch 4.3 (notmuch 0.21). Please use
- * notmuch_query_search_messages_st instead.
+ * @deprecated Deprecated as of libnotmuch 5 (notmuch 0.25). Please use
+ * notmuch_query_search_messages instead.
  *
  */
-NOTMUCH_DEPRECATED(4,3)
-notmuch_messages_t *
-notmuch_query_search_messages (notmuch_query_t *query);
+
+NOTMUCH_DEPRECATED(5,0)
+notmuch_status_t
+notmuch_query_search_messages_st (notmuch_query_t *query,
+				  notmuch_messages_t **out);
 
 /**
  * Destroy a notmuch_query_t along with any associated resources.
@@ -1003,22 +1025,21 @@ notmuch_threads_destroy (notmuch_threads_t *threads);
  * NOTMUCH_STATUS_XAPIAN_EXCEPTION: a Xapian exception occured. The
  *      value of *count is not defined.
  *
- * @since libnotmuch 4.3 (notmuch 0.21)
+ * @since libnotmuch 5 (notmuch 0.25)
  */
 notmuch_status_t
-notmuch_query_count_messages_st (notmuch_query_t *query, unsigned int *count);
+notmuch_query_count_messages (notmuch_query_t *query, unsigned int *count);
 
 /**
- * like notmuch_query_count_messages_st, but without a status return.
+ * Deprecated alias for notmuch_query_count_messages
  *
- * May return 0 in the case of errors.
  *
- * @deprecated Deprecated since libnotmuch 4.3 (notmuch 0.21). Please
- * use notmuch_query_count_messages_st instead.
+ * @deprecated Deprecated since libnotmuch 5.0 (notmuch 0.25). Please
+ * use notmuch_query_count_messages instead.
  */
-NOTMUCH_DEPRECATED(4,3)
-unsigned int
-notmuch_query_count_messages (notmuch_query_t *query);
+NOTMUCH_DEPRECATED(5,0)
+notmuch_status_t
+notmuch_query_count_messages_st (notmuch_query_t *query, unsigned int *count);
 
 /**
  * Return the number of threads matching a search.
@@ -1040,22 +1061,20 @@ notmuch_query_count_messages (notmuch_query_t *query);
  * NOTMUCH_STATUS_XAPIAN_EXCEPTION: a Xapian exception occured. The
  *      value of *count is not defined.
  *
- * @since libnotmuch 4.3 (notmuch 0.21)
+ * @since libnotmuch 5 (notmuch 0.25)
  */
 notmuch_status_t
-notmuch_query_count_threads_st (notmuch_query_t *query, unsigned *count);
+notmuch_query_count_threads (notmuch_query_t *query, unsigned *count);
 
 /**
- * like notmuch_query_count_threads, but without a status return.
+ * Deprecated alias for notmuch_query_count_threads
  *
- * May return 0 in case of errors.
- *
- * @deprecated Deprecated as of libnotmuch 4.3 (notmuch 0.21). Please
+ * @deprecated Deprecated as of libnotmuch 5.0 (notmuch 0.25). Please
  * use notmuch_query_count_threads_st instead.
  */
-NOTMUCH_DEPRECATED(4,3)
-unsigned int
-notmuch_query_count_threads (notmuch_query_t *query);
+NOTMUCH_DEPRECATED(5,0)
+notmuch_status_t
+notmuch_query_count_threads_st (notmuch_query_t *query, unsigned *count);
 
 /**
  * Get the thread ID of 'thread'.
@@ -1651,6 +1670,183 @@ notmuch_message_thaw (notmuch_message_t *message);
 void
 notmuch_message_destroy (notmuch_message_t *message);
 
+/**
+ * @name Message Properties
+ *
+ * This interface provides the ability to attach arbitrary (key,value)
+ * string pairs to a message, to remove such pairs, and to iterate
+ * over them.  The caller should take some care as to what keys they
+ * add or delete values for, as other subsystems or extensions may
+ * depend on these properties.
+ *
+ */
+/**@{*/
+/**
+ * Retrieve the value for a single property key
+ *
+ * *value* is set to a string owned by the message or NULL if there is
+ * no such key. In the case of multiple values for the given key, the
+ * first one is retrieved.
+ *
+ * @returns
+ * - NOTMUCH_STATUS_NULL_POINTER: *value* may not be NULL.
+ * - NOTMUCH_STATUS_SUCCESS: No error occured.
+ * @since libnotmuch 4.4 (notmuch 0.23)
+ */
+notmuch_status_t
+notmuch_message_get_property (notmuch_message_t *message, const char *key, const char **value);
+
+/**
+ * Add a (key,value) pair to a message
+ *
+ * @returns
+ * - NOTMUCH_STATUS_ILLEGAL_ARGUMENT: *key* may not contain an '=' character.
+ * - NOTMUCH_STATUS_NULL_POINTER: Neither *key* nor *value* may be NULL.
+ * - NOTMUCH_STATUS_SUCCESS: No error occured.
+ * @since libnotmuch 4.4 (notmuch 0.23)
+ */
+notmuch_status_t
+notmuch_message_add_property (notmuch_message_t *message, const char *key, const char *value);
+
+/**
+ * Remove a (key,value) pair from a message.
+ *
+ * It is not an error to remove a non-existant (key,value) pair
+ *
+ * @returns
+ * - NOTMUCH_STATUS_ILLEGAL_ARGUMENT: *key* may not contain an '=' character.
+ * - NOTMUCH_STATUS_NULL_POINTER: Neither *key* nor *value* may be NULL.
+ * - NOTMUCH_STATUS_SUCCESS: No error occured.
+ * @since libnotmuch 4.4 (notmuch 0.23)
+ */
+notmuch_status_t
+notmuch_message_remove_property (notmuch_message_t *message, const char *key, const char *value);
+
+/**
+ * Remove all (key,value) pairs from the given message.
+ *
+ * @param[in,out] message  message to operate on.
+ * @param[in]     key      key to delete properties for. If NULL, delete
+ *			   properties for all keys
+ * @returns
+ * - NOTMUCH_STATUS_READ_ONLY_DATABASE: Database was opened in
+ *   read-only mode so message cannot be modified.
+ * - NOTMUCH_STATUS_SUCCESS: No error occured.
+ *
+ * @since libnotmuch 4.4 (notmuch 0.23)
+ */
+notmuch_status_t
+notmuch_message_remove_all_properties (notmuch_message_t *message, const char *key);
+
+/**
+ * Opaque message property iterator
+ */
+typedef struct _notmuch_string_map_iterator notmuch_message_properties_t;
+
+/**
+ * Get the properties for *message*, returning a
+ * notmuch_message_properties_t object which can be used to iterate
+ * over all properties.
+ *
+ * The notmuch_message_properties_t object is owned by the message and
+ * as such, will only be valid for as long as the message is valid,
+ * (which is until the query from which it derived is destroyed).
+ *
+ * @param[in] message  The message to examine
+ * @param[in] key      key or key prefix
+ * @param[in] exact    if TRUE, require exact match with key. Otherwise
+ *		       treat as prefix.
+ *
+ * Typical usage might be:
+ *
+ *     notmuch_message_properties_t *list;
+ *
+ *     for (list = notmuch_message_get_properties (message, "testkey1", TRUE);
+ *          notmuch_message_properties_valid (list); notmuch_message_properties_move_to_next (list)) {
+ *        printf("%s\n", notmuch_message_properties_value(list));
+ *     }
+ *
+ *     notmuch_message_properties_destroy (list);
+ *
+ * Note that there's no explicit destructor needed for the
+ * notmuch_message_properties_t object. (For consistency, we do
+ * provide a notmuch_message_properities_destroy function, but there's
+ * no good reason to call it if the message is about to be destroyed).
+ *
+ * @since libnotmuch 4.4 (notmuch 0.23)
+ */
+notmuch_message_properties_t *
+notmuch_message_get_properties (notmuch_message_t *message, const char *key, notmuch_bool_t exact);
+
+/**
+ * Is the given *properties* iterator pointing at a valid (key,value)
+ * pair.
+ *
+ * When this function returns TRUE,
+ * notmuch_message_properties_{key,value} will return a valid string,
+ * and notmuch_message_properties_move_to_next will do what it
+ * says. Whereas when this function returns FALSE, calling any of
+ * these functions results in undefined behaviour.
+ *
+ * See the documentation of notmuch_message_properties_get for example
+ * code showing how to iterate over a notmuch_message_properties_t
+ * object.
+ *
+ * @since libnotmuch 4.4 (notmuch 0.23)
+ */
+notmuch_bool_t
+notmuch_message_properties_valid (notmuch_message_properties_t *properties);
+
+/**
+ * Move the *properties* iterator to the next (key,value) pair
+ *
+ * If *properties* is already pointing at the last pair then the iterator
+ * will be moved to a point just beyond that last pair, (where
+ * notmuch_message_properties_valid will return FALSE).
+ *
+ * See the documentation of notmuch_message_get_properties for example
+ * code showing how to iterate over a notmuch_message_properties_t object.
+ *
+ * @since libnotmuch 4.4 (notmuch 0.23)
+ */
+void
+notmuch_message_properties_move_to_next (notmuch_message_properties_t *properties);
+
+/**
+ * Return the key from the current (key,value) pair.
+ *
+ * this could be useful if iterating for a prefix
+ *
+ * @since libnotmuch 4.4 (notmuch 0.23)
+ */
+const char *
+notmuch_message_properties_key (notmuch_message_properties_t *properties);
+
+/**
+ * Return the value from the current (key,value) pair.
+ *
+ * This could be useful if iterating for a prefix.
+ *
+ * @since libnotmuch 4.4 (notmuch 0.23)
+ */
+const char *
+notmuch_message_properties_value (notmuch_message_properties_t *properties);
+
+
+/**
+ * Destroy a notmuch_message_properties_t object.
+ *
+ * It's not strictly necessary to call this function. All memory from
+ * the notmuch_message_properties_t object will be reclaimed when the
+ * containing message object is destroyed.
+ *
+ * @since libnotmuch 4.4 (notmuch 0.23)
+ */
+void
+notmuch_message_properties_destroy (notmuch_message_properties_t *properties);
+
+/**@}*/
+
 /**
  * Is the given 'tags' iterator pointing at a valid tag.
  *
@@ -1843,6 +2039,7 @@ notmuch_filenames_destroy (notmuch_filenames_t *filenames);
 /**
  * set config 'key' to 'value'
  *
+ * @since libnotmuch 4.4 (notmuch 0.23)
  */
 notmuch_status_t
 notmuch_database_set_config (notmuch_database_t *db, const char *key, const char *value);
@@ -1855,18 +2052,24 @@ notmuch_database_set_config (notmuch_database_t *db, const char *key, const char
  *
  * return value is allocated by malloc and should be freed by the
  * caller.
+ *
+ * @since libnotmuch 4.4 (notmuch 0.23)
  */
 notmuch_status_t
 notmuch_database_get_config (notmuch_database_t *db, const char *key, char **value);
 
 /**
  * Create an iterator for all config items with keys matching a given prefix
+ *
+ * @since libnotmuch 4.4 (notmuch 0.23)
  */
 notmuch_status_t
 notmuch_database_get_config_list (notmuch_database_t *db, const char *prefix, notmuch_config_list_t **out);
 
 /**
  * Is 'config_list' iterator valid (i.e. _key, _value, _move_to_next can be called).
+ *
+ * @since libnotmuch 4.4 (notmuch 0.23)
  */
 notmuch_bool_t
 notmuch_config_list_valid (notmuch_config_list_t *config_list);
@@ -1876,6 +2079,8 @@ notmuch_config_list_valid (notmuch_config_list_t *config_list);
  *
  * return value is owned by the iterator, and will be destroyed by the
  * next call to notmuch_config_list_key or notmuch_config_list_destroy.
+ *
+ * @since libnotmuch 4.4 (notmuch 0.23)
  */
 const char *
 notmuch_config_list_key (notmuch_config_list_t *config_list);
@@ -1885,6 +2090,8 @@ notmuch_config_list_key (notmuch_config_list_t *config_list);
  *
  * return value is owned by the iterator, and will be destroyed by the
  * next call to notmuch_config_list_value or notmuch config_list_destroy
+ *
+ * @since libnotmuch 4.4 (notmuch 0.23)
  */
 const char *
 notmuch_config_list_value (notmuch_config_list_t *config_list);
@@ -1892,23 +2099,31 @@ notmuch_config_list_value (notmuch_config_list_t *config_list);
 
 /**
  * move 'config_list' iterator to the next pair
+ *
+ * @since libnotmuch 4.4 (notmuch 0.23)
  */
 void
 notmuch_config_list_move_to_next (notmuch_config_list_t *config_list);
 
 /**
  * free any resources held by 'config_list'
+ *
+ * @since libnotmuch 4.4 (notmuch 0.23)
  */
 void
 notmuch_config_list_destroy (notmuch_config_list_t *config_list);
 
 /**
  * interrogate the library for compile time features
+ *
+ * @since libnotmuch 4.4 (notmuch 0.23)
  */
 notmuch_bool_t
 notmuch_built_with (const char *name);
 /* @} */
 
+#pragma GCC visibility pop
+
 NOTMUCH_END_DECLS
 
 #endif