#!/bin/bash
DEFDEV=/mnt/loop
DEV=${DEV:-${DEFDEV}}

unset force

usage() {
cat <<EOF
USAGE: ${0##*\/} [-f] TITLE_NUMBERS OUTPUT_BASENAME
    -f	force overwriting of output files

    use
        DEV=[DEVICE|MOUNTPOINT|FILE] ${0##*\/} ...
    to override the default device "$DEFDEV".
EOF
}

for arg; do
    case $arg in
    [0-9]*)
        if ! test $arg -gt 0; then
            echo "Invalid arg: $arg" >&2; exit 1;
        fi
        titles=( "${titles[@]}" "$arg" );;
    [A-Za-z]*)
        name="$arg";
    ;;
    -f) force="yes";;
    -h|--help) usage; exit 0;;
    *) echo "Invalid arg: $arg" >&2; exit 1;;
    esac
done

if test -z "$name"; then
    printf "no name for output given!\n" >&2
fi

if test "x$force" != "xyes"; then
    set -C
fi

for title in "${titles[@]}"; do
    o="$(printf "%s-%03i.mpg" "$name" "$title")"
    if test -e "$o" && test "x$force" != "xyes"; then
        echo "output file '$o' already exists! Skipping!" >&2
        continue;
    else
        echo "tccat -i \"$DEV\" -T ${title},-1,1 >\"$o\"" >&2
        tccat -i "$DEV" -T ${title},-1,1 >"$o";
    fi
done