lib: add notmuch_message_count_files

This operation is relatively inexpensive, as the needed metadata is
already computed by our lazy metadata fetching. The goal is to support
better UI for messages with multipile files.

diff --git a/lib/message.cc b/lib/message.cc
index f78e5a9d302fd62c09e41dfc59966b57e3056c3b..68c020017ea8c87882d11048d3b6e558c302b3df 100644 (file)
--- a/lib/message.cc
+++ b/lib/message.cc
@@ -946,6 +946,14 @@ notmuch_message_get_filenames (notmuch_message_t *message)
     return _notmuch_filenames_create (message, message->filename_list);
 }
 
+int
+notmuch_message_count_files (notmuch_message_t *message)
+{
+    _notmuch_message_ensure_filename_list (message);
+
+    return _notmuch_string_list_length (message->filename_list);
+}
+
 notmuch_bool_t
 notmuch_message_get_flag (notmuch_message_t *message,
                          notmuch_message_flag_t flag)

diff --git a/lib/notmuch-private.h b/lib/notmuch-private.h
index 57c6163918bb59ab236163dbd65eb3faf15113cd..544788bc3fdf67fb389b36945422572e0dcad6a4 100644 (file)
--- a/lib/notmuch-private.h
+++ b/lib/notmuch-private.h
@@ -550,6 +550,12 @@ typedef struct _notmuch_string_list {
 notmuch_string_list_t *
 _notmuch_string_list_create (const void *ctx);
 
+/*
+ * return the number of strings in 'list'
+ */
+int
+_notmuch_string_list_length (notmuch_string_list_t *list);
+
 /* Add 'string' to 'list'.
  *
  * The list will create its own talloced copy of 'string'.

diff --git a/lib/notmuch.h b/lib/notmuch.h
index 17f0872e9edf80189602712a5d5be652de8a8e2d..f5018497033d1fff6cea3a71a29a01fa5ced0535 100644 (file)
--- a/lib/notmuch.h
+++ b/lib/notmuch.h
@@ -1341,6 +1341,14 @@ notmuch_message_get_thread_id (notmuch_message_t *message);
 notmuch_messages_t *
 notmuch_message_get_replies (notmuch_message_t *message);
 
+/**
+ * Get the total number of files associated with a message.
+ * @returns Non-negative integer
+ * @since libnotmuch 5.0 (notmuch 0.25)
+ */
+int
+notmuch_message_count_files (notmuch_message_t *message);
+
 /**
  * Get a filename for the email corresponding to 'message'.
  *

diff --git a/lib/string-list.c b/lib/string-list.c
index 43ebe4993e8f26db6441f46e7af5dc6b42886d0e..9c3ae7ef2a30eb6127cb3b180f2385ee5da0d5ea 100644 (file)
--- a/lib/string-list.c
+++ b/lib/string-list.c
@@ -42,6 +42,12 @@ _notmuch_string_list_create (const void *ctx)
     return list;
 }
 
+int
+_notmuch_string_list_length (notmuch_string_list_t *list)
+{
+    return list->length;
+}
+
 void
 _notmuch_string_list_append (notmuch_string_list_t *list,
                             const char *string)