52 lines
1.8 KiB
Python
52 lines
1.8 KiB
Python
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#!/usr/bin/env python3
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import argparse
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import json
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import os
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import sys
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def minify(json_in):
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j = json.loads(json_in)
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j = json.dumps(j, indent = None, separators = (',', ':'))
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return(j)
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def parseArgs():
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args = argparse.ArgumentParser(description = ('Minify ("compress") JSON input'))
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args.add_argument('-o', '--output',
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default = '-',
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help = ('Write the minified JSON out to a file. The default is "-", which instead prints it to '
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'STDOUT. If instead you would like to write out to STDERR, use "+" (otherwise provide a '
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'path)'))
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args.add_argument('json_in',
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default = '-',
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nargs = '?',
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help = ('The JSON input. If "-" (the default), read STDIN; otherwise provide a path to the '
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'JSON file'))
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return(args)
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def main():
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args = parseArgs().parse_args()
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if args.json_in.strip() == '-':
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stdin = sys.stdin.read()
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if not stdin:
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raise argparse.ArgumentError('You specified to read from STDIN, but STDIN is blank')
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else:
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args.json_in = stdin
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else:
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with open(os.path.abspath(os.path.expanduser(args.json_in)), 'r') as f:
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args.json_in = f.read()
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minified = minify(args.json_in)
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if args.output.strip() not in ('-', '+'):
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args.output = os.path.abspath(os.path.expanduser(args.output))
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if not args.output.endswith('.json'):
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args.output += '.json'
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with open(args.output, 'w') as f:
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f.write(minified + '\n')
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elif args.output.strip() == '+':
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sys.stderr.write(minified + '\n')
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else:
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sys.stdout.write(minified + '\n')
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return()
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if __name__ == '__main__':
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main()
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