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#!/usr/bin/env python3
"""
This script will automatically update the copyright banner on all of libtcod's
source files using LICENSE.txt as a reference.
"""
import os
import sys
import argparse
import datetime
import re
from typing import Any
parser = argparse.ArgumentParser(
description='Updates the copyright banners in this project.',
)
parser.add_argument(
'-n', '--dry-run',
action='store_true',
help="Don't modify files.",
)
parser.add_argument(
'-v', '--verbose',
action='store_true',
help='Print debug information.',
)
LICENSE_FILE = 'LICENSE.txt'
RE_SOURCE_FILE = re.compile(r'.*\.[ch].?.?$')
# Change to the root libtcod directory.
os.chdir(os.path.join(os.path.dirname(__file__), '..'))
def get_copyright() -> str:
"""Update the year and return the copyright as a banner."""
with open(LICENSE_FILE, 'r', encoding='utf-8') as f:
copyright = f.read()
copyright = re.sub(
pattern=r'(?<=Copyright © \d\d\d\d-)\d+',
repl=str(datetime.date.today().year),
string=copyright,
)
with open(LICENSE_FILE, 'w', encoding='utf-8') as f:
f.write(copyright)
banner = "\n * ".join(copyright.strip().split("\n"))
banner = "\n".join(line.rstrip() for line in banner.split("\n"))
return "/* " + banner + "\n */\n"
def update_file(path: str, copyright: str, args: Any):
"""Adds or replaces the copyright banner for a source file.
`path` is the file path.
`copyright` is the up-to-date copyright banner.
"""
with open(path, 'r', encoding='utf-8') as f:
source = f.read()
match = re.match(
pattern=r'(/\*.*?Copyright ©.*?\*/\n?)?\n*(.*)',
string=source,
flags=re.DOTALL | re.MULTILINE,
)
assert match
old_copyright, source = match.groups()
if old_copyright == copyright:
if args.verbose:
print("Banner is up-to-date %r" % (path,))
return
elif old_copyright is None:
print('Adding missing banner to %r' % (path,))
else:
print('Updating banner for %r' % (path,))
if not args.dry_run:
with open(path, 'w', encoding='utf-8') as f:
f.write(copyright)
f.write(source)
def main() -> None:
args = parser.parse_args()
copyright = get_copyright()
# This avoids touching vendor files.
for file in os.listdir('src/'):
if RE_SOURCE_FILE.match(file):
update_file(os.path.join('src/', file), copyright, args)
for dirpath, _, filenames in os.walk('src/libtcod'):
for file in filenames:
if RE_SOURCE_FILE.match(file):
update_file(os.path.join(dirpath, file), copyright, args)
if __name__ == '__main__':
main()
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