| #!/usr/bin/env python |
| import sys |
| |
| |
| def detectBOM(inFileName): |
| file = open(inFileName, 'r') |
| file.seek(0) |
| head = map(ord, file.read(4)) |
| if head == [0x00, 0x00, 0xFE, 0xFF]: |
| return "utf_32_be" |
| elif head == [0xFF, 0xFE, 0x00, 0x00]: |
| return "utf_32_le" |
| elif head[:2] == [0xFE, 0xFF]: |
| return "utf_16_be" |
| elif head[:2] == [0xFF, 0xFE]: |
| return "utf_16_le" |
| elif head[:3] == [0xEF, 0xBB, 0xBF]: |
| return "utf_8" |
| else: |
| return "unknown" |
| |
| |
| def main(argv=None): |
| if argv is None: |
| argv = sys.argv |
| BOM = detectBOM(argv[1]) |
| if BOM != "utf_8": |
| return 0 |
| else: |
| print 'Detected byte-order mark (%s) in file "%s".' % (BOM, argv[1]) |
| return 1 |
| |
| if __name__ == '__main__': |
| sys.exit(main()) |
