#!/bin/sh
# Filename:      grml-exec-wrapper
# Purpose:       simple but smart program execution wrapper
# Authors:       grml-team (grml.org), (c) Michael Prokop <mika@grml.org>
# Bug-Reports:   see http://grml.org/bugs/
# License:       This file is licensed under the GPL v2 or any later version.
################################################################################

is_installed() {
    prog="$1"
    [ -z "$prog" ] && return 1

    ret=1
    oifs="$IFS"
    IFS=:
    for dir in $PATH; do
        [ -z "$dir" ] && continue
        [ -x "$dir/$prog" ] && ret=0 && break
    done

    IFS="$oifs"
    unset oifs
    return "$ret"
}

# use Xdisplay only if present and running under X:
display_info() {
if is_installed Xdialog && test -n "$DISPLAY" ; then
    Xdialog --title "grml-exec-wrapper" --msgbox "$1" 0 0 0
else
    print "$1">&2
fi
}

if [ -z "$1" ] ; then
    display_info "Usage: $0 <program> [<arguments>]"
    exit 1
fi

RC='0'
PROG="$1"

# make sure to support 'grml-exec-wrapper sudo wireshark' as well:
case $PROG in
	*sudo*) PROG="$2" ;;
esac

if is_installed "$PROG" ; then
    exec "$@"
else
    RC=1
    display_info "Sorry: ${PROG} not available.

Looks like the grml flavour you are using does not ship ${PROG}. :(

You can search for ${PROG} executing:

apt-get update && apt-cache search ${PROG}
    "
fi

exit $RC

## END OF FILE #################################################################