properties: add notmuch_message_count_properties

[notmuch] / lib / notmuch.h

diff --git a/lib/notmuch.h b/lib/notmuch.h
index 216b1c75354bed58d08228248adfc87ecd7b9445..a8981c5c0e38f1c469feb1aa2689e4eeade1dacf 100644 (file)
--- a/lib/notmuch.h
+++ b/lib/notmuch.h
@@ -1890,6 +1890,22 @@ typedef struct _notmuch_string_map_iterator notmuch_message_properties_t;
 notmuch_message_properties_t *
 notmuch_message_get_properties (notmuch_message_t *message, const char *key, notmuch_bool_t exact);
 
+/**
+ * Return the number of properties named "key" belonging to the specific message.
+ *
+ * @param[in] message  The message to examine
+ * @param[in] key      key to count
+ * @param[out] count   The number of matching properties associated with this message.
+ *
+ * @returns
+ *
+ * NOTMUCH_STATUS_SUCCESS: successful count, possibly some other error.
+ *
+ * @since libnotmuch 5.2 (notmuch 0.27)
+ */
+notmuch_status_t
+notmuch_message_count_properties (notmuch_message_t *message, const char *key, unsigned int *count);
+
 /**
  * Is the given *properties* iterator pointing at a valid (key,value)
  * pair.