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# Copyright 2014 Google Inc. All rights reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
"""A tool to parse and pretty-print JSON5.
Usage:
$ echo '{foo:"bar"}' | python -m json5.tool
{
foo: 'bar',
}
$ echo '{foo:"bar"}' | python -m json5.tool --as-json
{
"foo": "bar"
}
"""
import sys
from . import arg_parser
from . import lib
from .host import Host
from .version import __version__
def main(argv=None, host=None):
host = host or Host()
parser = arg_parser.ArgumentParser(host, prog='json5', desc=__doc__)
parser.add_argument(
'-c',
metavar='STR',
dest='cmd',
help='inline json5 string to read instead of ' 'reading from a file',
)
parser.add_argument(
'--as-json',
dest='as_json',
action='store_const',
const=True,
default=False,
help='output as JSON ' '(same as --quote-keys --no-trailing-commas)',
)
parser.add_argument(
'--indent',
dest='indent',
default=4,
help='amount to indent each line ' '(default is 4 spaces)',
)
parser.add_argument(
'--quote-keys',
action='store_true',
default=False,
help='quote all object keys',
)
parser.add_argument(
'--no-quote-keys',
action='store_false',
dest='quote_keys',
help="don't quote object keys that are identifiers"
' (this is the default)',
)
parser.add_argument(
'--trailing-commas',
action='store_true',
default=True,
help='add commas after the last item in multi-line '
'objects and arrays (this is the default)',
)
parser.add_argument(
'--no-trailing-commas',
dest='trailing_commas',
action='store_false',
help='do not add commas after the last item in '
'multi-line lists and objects',
)
parser.add_argument(
'file',
metavar='FILE',
nargs='?',
default='-',
help='optional file to read JSON5 document from; if '
'not specified or "-", will read from stdin '
'instead',
)
args = parser.parse_args(argv)
if parser.exit_status is not None:
return parser.exit_status
if args.version:
host.print_(__version__)
return 0
if args.cmd:
inp = args.cmd
elif args.file == '-':
inp = host.stdin.read()
else:
inp = host.read_text_file(args.file)
if args.indent == 'None':
args.indent = None
else:
try:
args.indent = int(args.indent)
except ValueError:
pass
if args.as_json:
args.quote_keys = True
args.trailing_commas = False
obj = lib.loads(inp)
s = lib.dumps(
obj,
indent=args.indent,
quote_keys=args.quote_keys,
trailing_commas=args.trailing_commas,
)
host.print_(s)
return 0
if __name__ == '__main__': # pragma: no cover
sys.exit(main())
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