source: trunk/dsys/funcEXE@ 4

#########################################################################
#
# Subroutines for determining existence of / path to executables
#
#########################################################################

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
}