#!/bin/sh

print_usage()
{
    echo "$(basename $0) -- Translates multiple DOS text file to UNIX."
    echo "Usage: $(basename $0) dos-text-file"
}

if [ $# = 0 ]; then
    print_usage
    exit 1
fi

TMPFILE="/tmp/dos2unix$$"

while [ $# -ne 0 ]; do
    # Checking if input file exist.
    if [ ! -f $1 ]; then
	echo "$0: File $1 not found."
	print_usage
	exit 1
    fi
    # DOS files lines ends with CR+LF. Unix files lines ends with LF.
    # Removing CR from DOS file (CR is 0x0D --> 015 in octal notation).
    tr -d '\015' < $1 > $TMPFILE
    if [ $? -eq 0 ] ; then
	# Success
        mv $TMPFILE $1
    fi
    shift
done

if [ -f $TMPFILE ]; then
    rm $TMPFILE
fi