# Enrico Franchi 2004(c)
# unixify.py
# Version 0.5
# This is released under Python Software Foundation Licence Version 2

# Usage: pythonw unixify.py
# You may build an applet.

import re
import os
import sys
import MacOS
import EasyDialogs

extensions= [".txt", ".text", ".mac", ".unix", ".dos", 
		".c", ".cc", ".cpp", ".cxx", ".hxx", ".h", ".hpp",
		".htm", ".html", ".xml", ".xsl", ".sgml", ".tex"
		".py", ".pl", ".cgi", ".m", ".mm", ".texinfo" ]

def convert(file):
	"""Creates a backup copy and converts \
	fileending from everything to unix"""
	try:
		fh = open(file,"r")
	except IOError:
		EasyDialogs.Message("Could not open %s" % file)
		return
	str = fh.read()
	fh.close()

	if str.find("\r") != -1:
		oldfile = file + ".old"
		try:
			fho = open(oldfile, "w+")
			fho.write(str)
			fho.close()
			del str
		except IOError:
			EasyDialogs.Message\
			     ("Could not open %s for writing" % oldfile)
		try:
			fh = open(file,"rU")
			str = fh.read()
			fh.close()
		except IOError:
			EasyDialogs.Message("Could not open %s" % file)
			os.remove(oldfile)
			return
		try:
			fh = open(file,"w")
			fh.write(str)
			fh.close()
		except IOError:
			EasyDialogs.Message\
			     ("Could not open %s for writing" % file)
			try:
				os.remove(file)
			except:
				pass
			os.rename(oldfile, file)
			return

def loop(dir, extensions):
	""" this calls convert recursively on all text files """
	goodFileList = []
	fileList = [ os.path.normcase(f) for f in os.listdir(dir) \
	             if os.path.isfile(os.path.join(dir,f))]
	dirList = [ os.path.normcase(d) for d in os.listdir(dir) \
	            if os.path.isdir(os.path.join(dir,d))]
	for f in fileList:
		# now we are evalutating wether 
		# the file is likely to be ascii
		(root, ext) = os.path.splitext(f)
		try:
			is_there = extensions.index(ext.lower())

			if is_there:
				goodFileList.append(f)
				continue
		except ValueError:
			pass
		# checks TYPE
		#(cr, ty) = MacOS.GetCreatorAndType(f)
		#if ty=="ttxt":
		#	goodFileList.append(f)
	if len(goodFileList) > 0:
		(path, name) = os.path.split(dir)
		print "\n%s: " % name
	for f in goodFileList:
		convert(f)
	for d in dirList:
		loop(os.path.join(dir,d), extensions)

if __name__ == "__main__":
	if len(sys.argv) == 1:
		args = EasyDialogs.GetArgv()
	else:
		args = sys.argv[1:]
	for file in args:
		if os.path.isfile(os.path.normcase(file)):
			convert(file)
		elif os.path.isdir(os.path.normcase(file)):
			if EasyDialogs.AskYesNoCancel\
			         ("Do you want to process all files\
					 inside the directory %s?" % file,
					cancel=""):
				loop(file, extensions)