Mac/Demo/example0/checktext.py

   1 """checktext - Check that a text file has macintosh-style newlines"""
   2
   3 import macfs
   4 import sys
   5 import EasyDialogs
   6 import string
   7
   8 def main():
   9         fsspec, ok = macfs.PromptGetFile('File to check end-of-lines in:', 'TEXT')
  10         if not ok:
  11                 sys.exit(0)
  12         pathname = fsspec.as_pathname()
  13         fp = open(pathname, 'rb')
  14         try:
  15                 data = fp.read()
  16         except MemoryError:
  17                 EasyDialogs.Message('Sorry, file is too big.')
  18                 sys.exit(0)
  19         if len(data) == 0:
  20                 EasyDialogs.Message('File is empty.')
  21                 sys.exit(0)
  22         number_cr = string.count(data, '\r')
  23         number_lf = string.count(data, '\n')
  24         if number_cr == number_lf == 0:
  25                 EasyDialogs.Message('File contains no lines.')
  26         if number_cr == 0:
  27                 EasyDialogs.Message('File has unix-style line endings')
  28         elif number_lf == 0:
  29                 EasyDialogs.Message('File has mac-style line endings')
  30         elif number_cr == number_lf:
  31                 EasyDialogs.Message('File probably has MSDOS-style line endings')
  32         else:
  33                 EasyDialogs.Message('File has no recognizable line endings (binary file?)')
  34         sys.exit(0)
  35
  36 if __name__ == '__main__':
  37         main()
  38
  39