Message ID | 20180211093607.27351-10-armbru@redhat.com (mailing list archive) |
---|---|
State | New, archived |
Headers | show |
On 02/11/2018 03:35 AM, Markus Armbruster wrote: > argparse is nicer to use than getopt, and gives us --help almost for > free. > > Signed-off-by: Markus Armbruster <armbru@redhat.com> > --- > scripts/qapi-gen.py | 48 ++++++++++++++++++++++++++++++------------------ > scripts/qapi/common.py | 43 ------------------------------------------- > 2 files changed, 30 insertions(+), 61 deletions(-) > More functionality in fewer lines of code - always a win ;) Reviewed-by: Eric Blake <eblake@redhat.com>
On Sun, Feb 11, 2018 at 10:35 AM, Markus Armbruster <armbru@redhat.com> wrote: > argparse is nicer to use than getopt, and gives us --help almost for > free. > > Signed-off-by: Markus Armbruster <armbru@redhat.com> nice, Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com> > --- > scripts/qapi-gen.py | 48 ++++++++++++++++++++++++++++++------------------ > scripts/qapi/common.py | 43 ------------------------------------------- > 2 files changed, 30 insertions(+), 61 deletions(-) > > diff --git a/scripts/qapi-gen.py b/scripts/qapi-gen.py > index 2100ca1145..e5be484e3e 100755 > --- a/scripts/qapi-gen.py > +++ b/scripts/qapi-gen.py > @@ -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__': > diff --git a/scripts/qapi/common.py b/scripts/qapi/common.py > index 868ec25deb..8290795dc1 100644 > --- a/scripts/qapi/common.py > +++ b/scripts/qapi/common.py > @@ -13,7 +13,6 @@ > > from __future__ import print_function > import errno > -import getopt > import os > import re > import string > @@ -1924,48 +1923,6 @@ def build_params(arg_type, boxed, extra): > > > # > -# 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 > # > > -- > 2.13.6 >
Quoting Markus Armbruster (2018-02-11 03:35:47) > argparse is nicer to use than getopt, and gives us --help almost for > free. > > Signed-off-by: Markus Armbruster <armbru@redhat.com> > --- > scripts/qapi-gen.py | 48 ++++++++++++++++++++++++++++++------------------ > scripts/qapi/common.py | 43 ------------------------------------------- > 2 files changed, 30 insertions(+), 61 deletions(-) > > diff --git a/scripts/qapi-gen.py b/scripts/qapi-gen.py > index 2100ca1145..e5be484e3e 100755 > --- a/scripts/qapi-gen.py > +++ b/scripts/qapi-gen.py > @@ -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='', Was the change from --output-dir to --output_dir intentional? The former seems more consistent.
Michael Roth <mdroth@linux.vnet.ibm.com> writes: > Quoting Markus Armbruster (2018-02-11 03:35:47) >> argparse is nicer to use than getopt, and gives us --help almost for >> free. >> >> Signed-off-by: Markus Armbruster <armbru@redhat.com> >> --- >> scripts/qapi-gen.py | 48 ++++++++++++++++++++++++++++++------------------ >> scripts/qapi/common.py | 43 ------------------------------------------- >> 2 files changed, 30 insertions(+), 61 deletions(-) >> >> diff --git a/scripts/qapi-gen.py b/scripts/qapi-gen.py >> index 2100ca1145..e5be484e3e 100755 >> --- a/scripts/qapi-gen.py >> +++ b/scripts/qapi-gen.py >> @@ -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='', > > Was the change from --output-dir to --output_dir intentional? The former > seems more consistent. Editing accident, good catch!
diff --git a/scripts/qapi-gen.py b/scripts/qapi-gen.py index 2100ca1145..e5be484e3e 100755 --- a/scripts/qapi-gen.py +++ b/scripts/qapi-gen.py @@ -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__': diff --git a/scripts/qapi/common.py b/scripts/qapi/common.py index 868ec25deb..8290795dc1 100644 --- a/scripts/qapi/common.py +++ b/scripts/qapi/common.py @@ -13,7 +13,6 @@ from __future__ import print_function import errno -import getopt import os import re import string @@ -1924,48 +1923,6 @@ def build_params(arg_type, boxed, extra): # -# 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 #
argparse is nicer to use than getopt, and gives us --help almost for free. Signed-off-by: Markus Armbruster <armbru@redhat.com> --- scripts/qapi-gen.py | 48 ++++++++++++++++++++++++++++++------------------ scripts/qapi/common.py | 43 ------------------------------------------- 2 files changed, 30 insertions(+), 61 deletions(-)