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qapi-gen: Convert from getopt to argparse

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argparse is nicer to use than getopt, and gives us --help almost for
free.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <20180211093607.27351-10-armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
[eblake: Fix --output-dir editing accident]
Signed-off-by: Eric Blake <eblake@redhat.com>
This commit is contained in:
Markus Armbruster 2018-02-11 10:35:47 +01:00 committed by Eric Blake
parent fb0bc835e5
commit 3b446a1817
2 changed files with 30 additions and 61 deletions
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48
scripts/qapi-gen.py
View File

@ -4,8 +4,11 @@
# This work is licensed under the terms of the GNU GPL, version 2 or later.
# See the COPYING file in the top-level directory.
from __future__ import print_function
import argparse
import re
import sys
from qapi.common import parse_command_line, QAPISchema
from qapi.common import QAPISchema
from qapi.types import gen_types
from qapi.visit import gen_visit
from qapi.commands import gen_commands
@ -15,26 +18,35 @@ from qapi.doc import gen_doc
def main(argv):
(input_file, output_dir, prefix, opts) = \
parse_command_line('bu', ['builtins', 'unmask-non-abi-names'])
parser = argparse.ArgumentParser(
description='Generate code from a QAPI schema')
parser.add_argument('-b', '--builtins', action='store_true',
help="generate code for built-in types")
parser.add_argument('-o', '--output-dir', action='store', default='',
help="write output to directory OUTPUT_DIR")
parser.add_argument('-p', '--prefix', action='store', default='',
help="prefix for symbols")
parser.add_argument('-u', '--unmask-non-abi-names', action='store_true',
dest='unmask',
help="expose non-ABI names in introspection")
parser.add_argument('schema', action='store')
args = parser.parse_args()
opt_builtins = False
opt_unmask = False
match = re.match(r'([A-Za-z_.-][A-Za-z0-9_.-]*)?', args.prefix)
if match.end() != len(args.prefix):
print("%s: 'funny character '%s' in argument of --prefix"
% (sys.argv[0], args.prefix[match.end()]),
file=sys.stderr)
sys.exit(1)
for o, a in opts:
if o in ('-b', '--builtins'):
opt_builtins = True
if o in ('-u', '--unmask-non-abi-names'):
opt_unmask = True
schema = QAPISchema(args.schema)
schema = QAPISchema(input_file)
gen_types(schema, output_dir, prefix, opt_builtins)
gen_visit(schema, output_dir, prefix, opt_builtins)
gen_commands(schema, output_dir, prefix)
gen_events(schema, output_dir, prefix)
gen_introspect(schema, output_dir, prefix, opt_unmask)
gen_doc(schema, output_dir, prefix)
gen_types(schema, args.output_dir, args.prefix, args.builtins)
gen_visit(schema, args.output_dir, args.prefix, args.builtins)
gen_commands(schema, args.output_dir, args.prefix)
gen_events(schema, args.output_dir, args.prefix)
gen_introspect(schema, args.output_dir, args.prefix, args.unmask)
gen_doc(schema, args.output_dir, args.prefix)
if __name__ == '__main__':

43
scripts/qapi/common.py
View File

@ -13,7 +13,6 @@
from __future__ import print_function
import errno
import getopt
import os
import re
import string
@ -1923,48 +1922,6 @@ def build_params(arg_type, boxed, extra):
return ret
#
# Common command line parsing
#
def parse_command_line(extra_options='', extra_long_options=[]):
try:
opts, args = getopt.gnu_getopt(sys.argv[1:],
'p:o:' + extra_options,
['prefix=', 'output-dir=']
+ extra_long_options)
except getopt.GetoptError as err:
print("%s: %s" % (sys.argv[0], str(err)), file=sys.stderr)
sys.exit(1)
output_dir = ''
prefix = ''
extra_opts = []
for oa in opts:
o, a = oa
if o in ('-p', '--prefix'):
match = re.match(r'([A-Za-z_.-][A-Za-z0-9_.-]*)?', a)
if match.end() != len(a):
print("%s: 'funny character '%s' in argument of --prefix" \
% (sys.argv[0], a[match.end()]), file=sys.stderr)
sys.exit(1)
prefix = a
elif o in ('-o', '--output-dir'):
output_dir = a + '/'
else:
extra_opts.append(oa)
if len(args) != 1:
print("%s: need exactly one argument" % sys.argv[0], file=sys.stderr)
sys.exit(1)
fname = args[0]
return (fname, output_dir, prefix, extra_opts)
#
# Accumulate and write output
#