Mac/Demo/example0/checktext.py

   1 """checktext - Check that a text file has macintosh-style newlines"""
   2
   3 import sys
   4 import EasyDialogs
   5 import string
   6
   7 def main():
   8     pathname = EasyDialogs.AskFileForOpen(message='File to check end-of-lines in:')
   9     if not pathname:
  10         sys.exit(0)
  11     fp = open(pathname, 'rb')
  12     try:
  13         data = fp.read()
  14     except MemoryError:
  15         EasyDialogs.Message('Sorry, file is too big.')
  16         sys.exit(0)
  17     if len(data) == 0:
  18         EasyDialogs.Message('File is empty.')
  19         sys.exit(0)
  20     number_cr = string.count(data, '\r')
  21     number_lf = string.count(data, '\n')
  22     if number_cr == number_lf == 0:
  23         EasyDialogs.Message('File contains no lines.')
  24     if number_cr == 0:
  25         EasyDialogs.Message('File has unix-style line endings')
  26     elif number_lf == 0:
  27         EasyDialogs.Message('File has mac-style line endings')
  28     elif number_cr == number_lf:
  29         EasyDialogs.Message('File probably has MSDOS-style line endings')
  30     else:
  31         EasyDialogs.Message('File has no recognizable line endings (binary file?)')
  32     sys.exit(0)
  33
  34 if __name__ == '__main__':
  35     main()