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