mirror of
https://github.com/zerotier/ZeroTierOne.git
synced 2024-10-18 05:00:48 -07:00
71 lines
1.6 KiB
Python
Executable File
71 lines
1.6 KiB
Python
Executable File
#! /usr/bin/env python3
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"""M4-quote text, for use as a literal in configure.ac.
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Produces M4 "code" which evaluates to the input text.
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It's not easy to read plain text from an input file in M4, without having it
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expanded as M4. Sometimes all we want is literal text!
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"""
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from __future__ import (
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absolute_import,
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print_function,
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unicode_literals,
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)
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from argparse import ArgumentParser
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from sys import (
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stdin,
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stdout,
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)
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def parse_args():
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parser = ArgumentParser(description=__doc__)
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parser.add_argument(
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'--open', '-a', default='[[', help="Current open-quote symbol.")
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parser.add_argument(
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'--close', '-b', default=']]', help="Current close-quote symbol.")
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parser.add_argument(
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'--input', '-i', default='-', help="Input file, or '-' for stdin.")
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parser.add_argument(
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'--output', '-o', default='-', help="Output file, or '-' for stdout.")
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return parser.parse_args()
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def open_input(in_file):
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if in_file == '-':
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return stdin
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else:
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return open(in_file)
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def open_output(out_file):
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if out_file == '-':
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return stdout
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else:
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return open(out_file, 'w')
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def escape(line):
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return (
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line
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.replace('[', '@<:@')
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.replace(']', '@:>@')
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.replace('#', '@%:@')
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.replace('$', '@S|@')
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)
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def main(args):
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with open_input(args.input) as istr, open_output(args.output) as ostr:
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ostr.write(args.open)
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for line in istr:
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ostr.write(escape(line))
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ostr.write('\n')
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ostr.write(args.close)
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if __name__ == '__main__':
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main(parse_args())
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