#########################################################################
#
# Subroutines for determining existence of / path to executables
#
#########################################################################
#
# Copyright Rainer Wichmann (2005)
#
# License Information:
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
#

findEXE() {
    if test $# -lt 1
    then
	printFATAL "findEXE: insufficient arguments"
    fi

    X="$PATH";
    prog="$1";
    OLD_IFS=${IFS}
    IFS=':'; export IFS 
    for dir in $X; do
	exe="$dir/$1"
	if (test -f "$exe" || test -f "${exe}.exe")
	then
	    EXECUTABLE="$exe"; export EXECUTABLE
	    IFS=${OLD_IFS}; export IFS
	    return 0
	fi
    done
    IFS=${OLD_IFS}; export IFS
    printINFO "Command $1 not found in \$PATH"
    EXECUTABLE=""; export EXECUTABLE
}

needEXE() {
    # printINFO "Checking for $@"
    for arg
    do
	findEXE "$arg"
	test -z "$EXECUTABLE" && printFATAL "Need \"$arg\" in \$PATH"
    done
    return 0
}
