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#!/usr/bin/env python3
# author: Ole Schuett
import re
import sys
from pathlib import Path
def main() -> None:
if len(sys.argv) != 2:
print("Usage: format_makefile.py <file>")
sys.exit(1)
makefile = Path(sys.argv[1])
lines_out = []
continuation = False
for line in makefile.read_text(encoding="utf8").split("\n"):
# Remove trailing whitespaces.
line = line.rstrip()
# Detect continued lines.
prev_continuation = continuation
continuation = line.endswith("\\")
# Continued lines are indented 8 spaces.
if prev_continuation:
lines_out.append(" " * 8 + line.strip())
# Tabbed lines are indented with excatly one tab.
elif line.startswith("\t"):
lines_out.append("\t" + line.strip())
# All other lines are not indented.
else:
lines_out.append(line.strip())
makefile.write_text("\n".join(lines_out), encoding="utf8")
main()
# EOF
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