buffer: add buffer_move_empty
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Peter Lieven <pl@kamp.de>
Reviewed-by: Daniel Berrange <berrange@redhat.com>
Message-id: 1446203414-4013-4-git-send-email-kraxel@redhat.com
diff --git a/util/buffer.c b/util/buffer.c
index 12bf2d7..c7a39ec 100644
--- a/util/buffer.c
+++ b/util/buffer.c
@@ -77,3 +77,17 @@
(buffer->offset - len));
buffer->offset -= len;
}
+
+void buffer_move_empty(Buffer *to, Buffer *from)
+{
+ assert(to->offset == 0);
+
+ g_free(to->buffer);
+ to->offset = from->offset;
+ to->capacity = from->capacity;
+ to->buffer = from->buffer;
+
+ from->offset = 0;
+ from->capacity = 0;
+ from->buffer = NULL;
+}
