Killbom

killbom removes all UTF-8 BOMs from the specified files.

Notice that it literally removes every byte sequence of "\xef\xbb\xbf" which makes this tool unsuitable for binary files.

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Lines 63

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Quick links: killBOM main usage 

  1. #!/usr/bin/python
    3. 
    
  3. import sys
    4. 
    
    5. 
    
  5. '''
    6. 
    
  6. Killbom removes all UTF-8 byte order marks from the specified files.
    7. 
    
  7. It removes all sequences of '%EF%BB%BF'.
    8. 
    
    9. 
    
  9. **Unsuitable for binary files.**
    10. 
    
  10. '''
    11. 
    
    12. 
    
  12. # Set this to whatever you want to name this script.
    13. 
    
  13. # (Command to enter at shell.)
    14. 
    
  14. script_name = 'killbom'
    15. 
    
    16. 
    
    17. 
    
  17. def killBOM(filename):
    18. 
    
  18.     '''
    19. 
    
  19.     Remove UTF-8 BOM from the file `filename`.
    20. 
    
  20.     '''
    21. 
    
  21.     
    22. 
    
  22.     try:
    23. 
    
  23.         text = open(filename, 'rb').read()
    24. 
    
  24.         
    25. 
    
  25.         outfile = open(filename, 'wb')
    26. 
    
  26.         outfile.write(text.replace(b'\xEF\xBB\xBF', b''))
    27. 
    
  27.         outfile.close()
    28. 
    
  28.     except IOError as error:
    29. 
    
  29.         sys.stderr.write("IO error '{}': {}\n".format(
    30. 
    
  30.             filename.replace("'","\\'"),
    31. 
    
  31.             error
    32. 
    
  32.         ))
    33. 
    
    34. 
    
    35. 
    
  35. def usage():
    36. 
    
  36.     '''
    37. 
    
  37.     Print usage message to stderr.
    38. 
    
  38.     '''
    39. 
    
  39.     
    40. 
    
  40.     sys.stderr.write('''Usage: {0} [file] ...
    41. 
    
  41. {0} removes all UTF-8 BOM marks from files.
    42. 
    
    43. 
    
  43. WARNING: It really removes all sequences of '\\0xEF\\0xBB\\0xBF'.
    44. 
    
    45. 
    
  45. WARNING: It accepts no options. All arguments are treated as filenames.
    46. 
    
  46. '''.format(script_name))
    47. 
    
    48. 
    
    49. 
    
  49. def main():
    50. 
    
  50.     '''
    51. 
    
  51.     Call `usage` and call `killBOM` for all specified arguments.
    52. 
    
  52.     '''
    53. 
    
  53.     
    54. 
    
  54.     if len(sys.argv) > 1:
    55. 
    
  55.         for filename in sys.argv[1:]:
    56. 
    
  56.             killBOM(filename)
    57. 
    
  57.     else:
    58. 
    
  58.         usage()
    59. 
    
    60. 
    
    61. 
    
  61. if __name__ == '__main__':
    62. 
    
  62.     main()
    63. 
    
    64.