lib: Split the database upgrade into two phases for safer operation.

[notmuch] / lib / message.cc

diff --git a/lib/message.cc b/lib/message.cc
index ea9c8bd96afb1b34ccb8ebb329c5f93ebcaa344b..1cda55a1e1b67b9573f7994018cc97bb73d08acc 100644 (file)
--- a/lib/message.cc
+++ b/lib/message.cc
@@ -416,6 +416,18 @@ _notmuch_message_add_filename (notmuch_message_t *message,
     return NOTMUCH_STATUS_SUCCESS;
 }
 
+char *
+_notmuch_message_talloc_copy_data (notmuch_message_t *message)
+{
+    return talloc_strdup (message, message->doc.get_data ().c_str ());
+}
+
+void
+_notmuch_message_clear_data (notmuch_message_t *message)
+{
+    message->doc.set_data ("");
+}
+
 const char *
 notmuch_message_get_filename (notmuch_message_t *message)
 {
@@ -441,7 +453,10 @@ notmuch_message_get_filename (notmuch_message_t *message)
     {
        /* A message document created by an old version of notmuch
         * (prior to rename support) will have the filename in the
-        * data of the document rather than as a file-direntry term. */
+        * data of the document rather than as a file-direntry term.
+        *
+        * It would be nice to do the upgrade of the document directly
+        * here, but the database is likely open in read-only mode. */
        const char *data;
 
        data = message->doc.get_data ().c_str ();