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qapi: Fix generators to report command line errors decently

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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>
This commit is contained in:
Markus Armbruster 2015-04-02 13:17:34 +02:00
parent 2114f5a98d
commit b45409683e
1 changed files with 5 additions and 1 deletions
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6
scripts/qapi.py
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@ -989,7 +989,7 @@ def parse_command_line(extra_options = "", extra_long_options = []):
"input-file=", "output-dir="] "input-file=", "output-dir="]
+ extra_long_options) + extra_long_options)
except getopt.GetoptError, err: except getopt.GetoptError, err:
print str(err) print >>sys.stderr, "%s: %s" % (sys.argv[0], str(err))
sys.exit(1) sys.exit(1)
output_dir = "" output_dir = ""
@ -1017,4 +1017,8 @@ def parse_command_line(extra_options = "", extra_long_options = []):
do_c = True do_c = True
do_h = 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) return (input_file, output_dir, do_c, do_h, prefix, extra_opts)