#!/bin/sh

COUNT=1
ENAME=${0##*/}
: ${XTERM:=xterm}

_error() {
    printf "%s: %s\n" "$ENAME" "$*" 1>&2
}

_isint() {
    test "$1" -gt 0 2>/dev/null 1>&2
}

_runterm() {
    if [ -z "$1" ]; then
        "$XTERM" $XTERM_OPTS &
    else
        "$XTERM" $XTERM_OPTS -e "$@" &
    fi
}

_usage() {
    printf \
      "usage: %s %s [COMMAND [ARGUMENTS ...]]\n" \
      "$ENAME" \
      "[-c COUNT] [-o XTERM_OPTIONS] [-x XTERM]" 1>&2

    [ "$#" -gt 0 ] &&
      for MSG; do
          _error "$MSG"
      done

    exit 1
}


while getopts "c:o:x:" OPTION; do
    case "$OPTION" in
    c)  if _isint "$OPTARG"; then
            COUNT="$OPTARG"
        else
            _usage "invalid COUNT: $OPTARG"
        fi ;;

    o)  XTERM_OPTS="$OPTARG" ;;

    x)  if type "$OPTARG" 2>/dev/null 1>&2; then
            XTERM="$OPTARG"
        else
            _usage "could not locate terminal emulator: $OPTARG"
        fi ;;

    \?) _usage ;;
    esac
done

shift "$(( $OPTIND - 1 ))"

if [ ! -z "$1" ]; then
    type "$1" 2>/dev/null 1>&2 ||
      _usage "could not locate command: $1"
fi

for INDEX in $(seq "$COUNT"); do
    _runterm "$@"
done