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from __future__ import print_function |
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import sys |
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import os.path |
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import json |
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import jsonpointer |
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import argparse |
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parser = argparse.ArgumentParser( |
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description='Resolve a JSON pointer on JSON files') |
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ptr_group = parser.add_mutually_exclusive_group(required=True) |
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ptr_group.add_argument('-f', '--pointer-file', type=argparse.FileType('r'), |
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nargs='?', |
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help='File containing a JSON pointer expression') |
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ptr_group.add_argument('POINTER', type=str, nargs='?', |
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help='A JSON pointer expression') |
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parser.add_argument('FILE', type=argparse.FileType('r'), nargs='+', |
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help='Files for which the pointer should be resolved') |
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parser.add_argument('--indent', type=int, default=None, |
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help='Indent output by n spaces') |
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parser.add_argument('-v', '--version', action='version', |
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version='%(prog)s ' + jsonpointer.__version__) |
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def main(): |
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try: |
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resolve_files() |
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except KeyboardInterrupt: |
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sys.exit(1) |
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def parse_pointer(args): |
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if args.POINTER: |
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ptr = args.POINTER |
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elif args.pointer_file: |
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ptr = args.pointer_file.read().strip() |
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else: |
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parser.print_usage() |
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sys.exit(1) |
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return ptr |
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def resolve_files(): |
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""" Resolve a JSON pointer on JSON files """ |
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args = parser.parse_args() |
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ptr = parse_pointer(args) |
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for f in args.FILE: |
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doc = json.load(f) |
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try: |
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result = jsonpointer.resolve_pointer(doc, ptr) |
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print(json.dumps(result, indent=args.indent)) |
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except jsonpointer.JsonPointerException as e: |
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print('Could not resolve pointer: %s' % str(e), file=sys.stderr) |
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if __name__ == "__main__": |
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main() |
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