64 lines
1.8 KiB
Python
Executable File
64 lines
1.8 KiB
Python
Executable File
#!/usr/bin/env python3
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from os import path
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from typing import List, Tuple
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import argparse
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def replace_all(
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replacements: List[Tuple[str, str]],
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lines: List[str],
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) -> List[str]:
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'''Runs string replacement on each of lines.
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Only one pattern found in each line will be replaced.
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'''
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result = []
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for l in lines:
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for (needle, replacement) in replacements:
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x = l.replace(needle, replacement)
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result.append(x)
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return result
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def main():
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parser = argparse.ArgumentParser(
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prog='generate_file',
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description='Runs line-by-line string substitutions on input files',
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epilog='Output files are named after input files with any .in extension stripped',
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)
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parser.add_argument(
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'--replace',
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'-r',
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help='parameters <A> <B> will replace <A> with <B>',
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required=True,
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nargs=2,
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action='append',
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)
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parser.add_argument(
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'--outdir',
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'-o',
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required=True,
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help='directory to write output to',
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)
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parser.add_argument('inputs', nargs='+', help='files to read in')
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settings = parser.parse_args()
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for infile in settings.inputs:
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base = path.basename(infile)
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if base.endswith('.in'):
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base = base[0:-3]
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if not base:
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raise ValueError(
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'Input file "{}" has an empty basefile name after stripping any ".in" suffix'
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.format(infile))
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outfile = path.join(settings.outdir, base)
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with open(infile, 'r', encoding='utf-8') as reader:
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lines = reader.readlines()
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with open(outfile, 'w', encoding='utf-8') as writer:
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writer.writelines(replace_all(settings.replace, lines))
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if __name__ == '__main__':
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main()
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