#! /bin/sh
set -e

usage() {
   echo "Usage: $0 [[from_enc] to_enc] filename" >&2
   exit 1
}

if [ $# -eq 1 ]; then
    from_enc="`python3 -c \"from m_lib.defenc import default_encoding; print(default_encoding)"`"
    if [ "$from_enc" != utf-8 ]; then
        to_enc=utf-8
    else
        usage
    fi
    filename="$1"
elif [ $# -eq 2 ]; then
    from_enc="`python3 -c \"from m_lib.defenc import default_encoding; print(default_encoding)"`"
    to_enc="$1"
    filename="$2"
elif [ $# -eq 3 ]; then
    from_enc="$1"
    to_enc="$2"
    filename="$3"
else
    usage
fi

cmd="`basename \"$0\"`"
case "$cmd" in
    cp_*) cmd="cp -p" ;;
    mv_*) cmd=mv ;;
    *)
        echo "Unknown command $0, aborting" >&2
        exit 2
    ;;
esac

filename_recoded=`echo "$filename" | iconv -f "$from_enc" -t "$to_enc"`
exec $cmd "$filename" "$filename_recoded"