ACC SHELL

#!/bin/bash

unset POSIXLY_CORRECT ; set +o posix # we're using non-posix bash features

# similar to remove_and_set rpm suse macro,
# but more flexible and able to handle files
# in subdirs of the etc/sysconfig directory.
sysconfig_remove_and_set()
{
    local root=''
    local base='etc/sysconfig'
    local fill='bin/fillup'
    local dflt=''
    while [ $# -gt 0 ]; do
        case $1 in
            (-r) shift ; root="${1%/}/" ; shift ;;
            (-b) shift ; base="$1"      ; shift ;;
	    (-d) shift ; dflt="$1"      ; shift ;;
	    (-f) shift ; flup="$1"      ; shift ;;
            (*)                           break ;;
        esac
    done
    local file=${1} ; shift
    local var val f
    if test -n "$1" -a -n "$file" -a -f "${root}${base}/${file}" -a -x "${root}${fill}" ; then
        rm -f "${root}${base}/${file}.del.$$"
        for var in ${1:+"$@"} ; do
	    val="${!var}"
            echo "$var='${val:-$dflt}'"
        done > "${root}${base}/${file}.del.$$"
        if test -s "${root}${base}/${file}.del.$$" ; then
	    rm -f "${root}${base}/${file}.new"
            "${root}${fill}" -q -t -r -i -d "=" "${root}${base}/${file}" \
            "${root}${base}/${file}.del.$$" "${root}${base}/${file}.deleted.$$"
            if test -f "${root}${base}/${file}.new" ; then
                mv -f "${root}${base}/${file}.new" "${root}${base}/${file}"
            fi
            for f in "${root}${base}/${file}.del.$$" "${root}${base}/${file}.deleted.$$" ; do
                if test -f "$f" ; then
                    . "$f"
                    rm -f "$f"
                fi
            done
        fi
        rm -f "${root}${base}/${file}.del.$$"
    fi
}