#!/usr/bin/env python2
# coding: utf-8
#
# Name   : fix-htmldoc-utf8
# Summary: Program to fix UTF-8 characters that HTMLDOC has messed
# Author : Aurelio Jargas www.aurelio.net/soft
# License: BSD
# Release: April, 2008
#
# HTMLDOC has no Unicode support, so when you try to use it in a UTF-8 file,
# all the special characters (not ASCII) will be incorrect in the resulting HTML.
# This program fixes this, restoring the original UTF-8 characters.
#
# Just use it as a filter (reads STDIN, results to STDOUT) or use the -w option
# fix the file in place.
#
# Examples:
# 	cat myfile.html | fix-htmldoc-utf8 > myfile-ok.html
# 	fix-htmldoc-utf8 myfile.html > myfile-ok.html
# 	fix-htmldoc-utf8 -w myfile.html
#

import sys

# You can add new chars to this mapping, if needed.
# The first set are the ISO-8859-1 extended chars.
# The second set are the Unicode chars I've found on my keyboard.
#
mapping = """
¡	¡
¢	¢
£	£
¤	¤
¥	Â¥
¦	¦
§	§
¨	¨
©	©
ª	ª
«	«
¬	¬
®	®
¯	¯
°	°
±	±
²	²
³	³
´	´
µ	Âμ
¶	¶
·	·
¸	¸
¹	¹
º	º
»	»
¼	¼
½	½
¾	¾
¿	¿
À	Ã\x80
Á	Ã\x81
Â	Ã\x82
Ã	Ã\x83
Ä	Ã\x84
Å	Ã\x85
Æ	Ã\x86
Ç	Ã\x87
È	Ã\x88
É	Ã\x89
Ê	Ã\x8a
Ë	Ã\x8b
Ì	Ã\x8c
Í	Ã\x8d
Î	Ã\x8e
Ï	Ã\x8f
Ð	Ã\x90
Ñ	Ã\x91
Ò	Ã\x92
Ó	Ã\x93
Ô	Ã\x94
Õ	Ã\x95
Ö	Ã\x96
×	Ã\x97
Ø	Ã\x98
Ù	Ã\x99
Ú	Ã\x9a
Û	Ã\x9b
Ü	Ã\x9c
Ý	Ã\x9d
Þ	Ã\x9e
ß	Ã\x9f
à	à
á	á
â	â
ã	ã
ä	ä
å	Ã¥
æ	æ
ç	ç
è	è
é	é
ê	ê
ë	ë
ì	ì
í	í
î	î
ï	ï
ð	ð
ñ	ñ
ò	ò
ó	ó
ô	ô
õ	Ãμ
ö	ö
÷	÷
ø	ø
ù	ù
ú	ú
û	û
ü	ü
ý	ý
þ	þ
ÿ	ÿ

	
™	â\x84¢
€	â\x82¬
æ	æ
Œ	Å\x92
≤	â\x89¤
≠	â\x89 
≥	â\x89¥
fi	ï¬\x81
fl	ï¬\x82
∞	â\x88\x9e
•	â\x80¢
⁄	â\x81\x84
≈	â\x89\x88
◊	â\x97\x8a
∑	â\x88\x91
∏	â\x88\x8f
π	Ï\x80
∂	â\x88\x82
∆	â\x88\x86
ƒ	Æ\x92
Ω	Ω
√	â\x88\x9a
∫	â\x88«
†	â\x80 
‡	â\x80¡
ı	ı
›	â\x80º
˚	Ë\x9a
˙	Ë\x99
ˇ	Ë\x87
˝	Ë\x9d
˛	Ë\x9b
‘	â\x80\x98
’	â\x80\x99
‚	â\x80\x9a
“	â\x80\x9c
”	â\x80\x9d
„	â\x80\x9e
…	â\x80¦
—	â\x80\x94
–	â\x80\x93

CHARSET=utf-8	CHARSET=iso-8859-1
CHARSET=utf-8	CHARSET=iso-iso-8859-1
"""

# Just a standard search & replace
def fixit(text):
	for pair in mapping.split('\n'):
		if not pair: continue
		repl, patt = pair.split('\t')
		text = text.replace(patt.strip(), repl.strip())
	return text

# User wants to save the file in place or not?
write_file = False
if len(sys.argv) > 1 and sys.argv[1] == '-w':
	write_file = True
	sys.argv.pop(1)

# The input files (if any)
files = sys.argv[1:]

if files:
	# Fix input files one by one
	for this_file in files:
		try:
			# Read and fix
			f = open(this_file, 'r')
			fixed = fixit(f.read())
			f.close()
			
			# Save the file or show on STDOUT
			if write_file:
				f = open(this_file, 'w')
				f.write(fixed)
				f.close()
				print "Fixed", this_file
			else:
				print fixed,
		except:
			print "Error fixing", this_file
			sys.exit(1)
else:
	# No input file, read from STDIN and send results to STDOUT
	print fixit(sys.stdin.read()),