"""checktext - Check that a text file has macintosh-style newlines"""

import sys

import EasyDialogs

import string

def main():

    pathname = EasyDialogs.AskFileForOpen(message='File to check end-of-lines in:')

    if not pathname:

        sys.exit(0)

    fp = open(pathname, 'rb')

    try:

        data = fp.read()

    except MemoryError:

        EasyDialogs.Message('Sorry, file is too big.')

        sys.exit(0)

    if len(data) == 0:

        EasyDialogs.Message('File is empty.')

        sys.exit(0)

    number_cr = string.count(data, '\r')

    number_lf = string.count(data, '\n')

    if number_cr == number_lf == 0:

        EasyDialogs.Message('File contains no lines.')

    if number_cr == 0:

        EasyDialogs.Message('File has unix-style line endings')

    elif number_lf == 0:

        EasyDialogs.Message('File has mac-style line endings')

    elif number_cr == number_lf:

        EasyDialogs.Message('File probably has MSDOS-style line endings')

    else:

        EasyDialogs.Message('File has no recognizable line endings (binary file?)')

    sys.exit(0)

if __name__ == '__main__':

    main()