qemu-io: add command completion

Autocomplete qemu-io commands at the interactive prompt.

Note this only completes command names and not their options.

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>

1 files changed, 7 insertions, 1 deletions

diff --git a/qemu-io.c b/qemu-io.c
index d7c26d3ed0..fdc46a97e8 100644
--- a/qemu-io.c
+++ b/qemu-io.c
@@ -236,9 +236,15 @@ static void readline_func(void *opaque, const char *str, void *readline_opaque)
     *line = g_strdup(str);
 }
 
+static void completion_match(const char *cmd, void *opaque)
+{
+    readline_add_completion(readline_state, cmd);
+}
+
 static void readline_completion_func(void *opaque, const char *str)
 {
-    /* No command or argument completion implemented yet */
+    readline_set_completion_index(readline_state, strlen(str));
+    qemuio_complete_command(str, completion_match, NULL);
 }
 
 static char *fetchline_readline(void)