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bullseye
Tools/scripts/update_file.py
28 строк
762 B
Huw Jones
Imported Upstream version 3.9.2
21 мар 2022, 14:02
21 мар 2022, 14:02
0946962
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""" A script that replaces an old file with a new one, only if the contents actually changed. If not, the new file is simply deleted. This avoids wholesale rebuilds when a code (re)generation phase does not actually change the in-tree generated code. """ import os import sys def main(old_path, new_path): with open(old_path, 'rb') as f: old_contents = f.read() with open(new_path, 'rb') as f: new_contents = f.read() if old_contents != new_contents: os.replace(new_path, old_path) else: os.unlink(new_path) if __name__ == '__main__': if len(sys.argv) != 3: print("Usage: %s <path to be updated> <path with new contents>" % (sys.argv[0],)) sys.exit(1) main(sys.argv[1], sys.argv[2])