#!/usr/bin/env python
# Time-stamp: <2007-01-28 13:29:21 poser>
# Convert MS Codepage 1250 and 1252 (Winlatin 1 and 2)  characters to ASCII
# Where this is not possible, strip them.

# Copyright 2004-2007 William J. Poser (billposer@alum.mit.edu)
# This program is free software; you can redistribute it and/or modify
# it under the terms of versio 2 of the GNU General Public License
# as published by the Free Software Foundation.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
# or go to the web page:  http://www.gnu.org/licenses/gpl.txt.

import sys
import os

ByteOffset = 0
ReplacementCnt = 0
StripCnt = 0
# Read one byte at a time and replace if necessary
while 1:
	try:
		ch = sys.stdin.read(1)
		if not ch:
			sys.exit(0)
		c = ord(ch)
		ByteOffset = ByteOffset + 1
		if c == 0x85:                   #  Ellipsis
			sys.stdout.write(chr(0x2E))
			sys.stdout.write(chr(0x2E))
			sys.stdout.write(chr(0x2E))
			ReplacementCnt = ReplacementCnt + 1
		elif c == 0x92:                 #  Apostrophe
			sys.stdout.write(chr(0x27))
  			ReplacementCnt = ReplacementCnt + 1
		elif c == 0x96:                 #  Hyphen
			sys.stdout.write(chr(0x2D))
			ReplacementCnt = ReplacementCnt + 1
		elif c == 0x91:                 #  Left single quotation mark
			sys.stdout.write(chr(0x60))
			ReplacementCnt = ReplacementCnt + 1
		elif c == 0x92:                 #  Right single quotation mark
			sys.stdout.write(chr(0x27))
			ReplacementCnt = ReplacementCnt + 1
		elif c == 0x93:                 #  Left double quotation mark
			sys.stdout.write(chr(0x22))
			ReplacementCnt = ReplacementCnt + 1
		elif c == 0x94:                 #  Right double quotation mark
			sys.stdout.write(chr(0x22))
			ReplacementCnt = ReplacementCnt + 1
		elif c == 0x96:                 #  En-dash
			sys.stdout.write(chr(0x2D))
			ReplacementCnt = ReplacementCnt + 1
		elif c == 0x97:                 #  Em-dash
			sys.stdout.write(chr(0x2D))
			sys.stdout.write(chr(0x2D))
			ReplacementCnt = ReplacementCnt + 1
		elif c > 0x7F:
			sys.stderr.write(("Skipped non-ASCII character %02X at byte\n") %(c,ByteOffset))
			StripCnt = StripCnt + 1
		else:
			sys.stdout.write(ch)

	except IOError:
		sys.exit(0)
	except SystemExit:
		sys.stderr.write("Replaced %3d characters.\n" % ReplacementCnt)
		sys.stderr.write("Stripped %3d characters.\n" % StripCnt)
		sys.exit(0)