#! /bin/sh
##############################################################################
# Copyright 2005  Pablo Chinea (a.k.a. Khertz)  (email: khertz@gmail.com)    #
#                                                                            #
# This program is free software; you can redistribute it and/or modify       #
# it under the terms of the GNU General Public License as published by       #
# the Free Software Foundation; either version 2 of the License, or          #
# (at your option) any later version.                                        #
#                                                                            #
# 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  #
##############################################################################
#
# Version 1.0
#
# This program change recursively the encoding of every file into a directory
# to UTF-8 encoding.
#
# I can't guarantee the good operation of this script, make a backup before 
# and USE IT UNDER YOUR OWN RISK.
#


# Check command line parameters
if [[ ! -d $1 ]]
then
	echo "Command line error! Usage: $0 <directory>";
	exit 1
fi

# Create the temporal filename
tempfile=`tempfile 2>/dev/null` || tempfile=/tmp/test$$
trap "rm -f $tempfile" 0 1 2 5 15

# Locate recursively every files into the directory.
find $1 -type f > $tempfile;

# Open the temporaly file.
exec 3< $tempfile

while read -u3 filename
do
	# Check the file type and the file encoding
	typefile=$(file --mime "$filename");
	if [[ -n $(echo $typefile | grep "text/") ]]
	then
		encoding=$(echo $typefile | cut -d'=' -f2);
		if [[ $encoding != "utf-8" ]]
		then
			if [[ -n "$(iconv --list | grep -i $encoding)" ]]
			then
				# Change the file encoding.
				tempfile2=`tempfile 2>/dev/null` || tempfile2=/tmp/test$$
				trap "rm -f $tempfile2" 0 1 2 5 15
				iconv --from-code=$encoding --to-code=utf-8 "$filename" > $tempfile2
				mv -f $tempfile2 "$filename"
				echo "$filename: $encoding -> utf8";
			fi
		fi
	fi;
done;

exec 3<&-