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#! /bin/env python
import sys
import re
import difflib
pkgver_re = re.compile(r'^pkgver\s*=\s*(\S*\S)\s*$', re.MULTILINE)
pkgrel_re = re.compile(r'^pkgrel\s*=\s*(\S*\S)\s*$', re.MULTILINE)
def main(path, pkgver, pkgrel):
"""Substitute 'pkgver' and 'pkgrel' values in path."""
with open(path) as fin:
txt = fin.read()
new_txt = re.sub(pkgver_re, f'pkgver={pkgver}', txt)
new_txt = re.sub(pkgrel_re, f'pkgrel={pkgrel}', new_txt)
with open(path, 'w') as fout:
fout.write(new_txt)
print(f"Changes made to {path} by '{sys.argv[0]} {pkgver} {pkgrel}'")
result = difflib.unified_diff(txt.splitlines(keepends=True),
new_txt.splitlines(keepends=True))
sys.stdout.writelines(result)
if __name__ == '__main__':
main('PKGBUILD', *sys.argv[1:])
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