qapi: Fix generators to report command line errors decently
Report to stderr, prefix with the program name. Also reject
extra arguments.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
diff --git a/scripts/qapi.py b/scripts/qapi.py
index b97dd0b..df6e5aa 100644
--- a/scripts/qapi.py
+++ b/scripts/qapi.py
@@ -989,7 +989,7 @@
"input-file=", "output-dir="]
+ extra_long_options)
except getopt.GetoptError, err:
- print str(err)
+ print >>sys.stderr, "%s: %s" % (sys.argv[0], str(err))
sys.exit(1)
output_dir = ""
@@ -1017,4 +1017,8 @@
do_c = True
do_h = True
+ if len(args) != 0:
+ print >>sys.stderr, "%s: too many arguments" % sys.argv[0]
+ sys.exit(1)
+
return (input_file, output_dir, do_c, do_h, prefix, extra_opts)