1 #! /usr/bin/env python3 2 3 "Replace LF with CRLF in argument files. Print names of changed files." 4 5 import sys, re, os 6 7 def main(): 8 for filename in sys.argv[1:]: 9 if os.path.isdir(filename): 10 print(filename, "Directory!") 11 continue 12 with open(filename, "rb") as f: 13 data = f.read() 14 if b'\0' in data: 15 print(filename, "Binary!") 16 continue 17 newdata = re.sub(b"\r?\n", b"\r\n", data) 18 if newdata != data: 19 print(filename) 20 with open(filename, "wb") as f: 21 f.write(newdata) 22 23 if __name__ == '__main__': 24 main() 25
