#!/bin/sh

prefix=@prefix@

major_version=@MOD_MAJOR_VERSION@
minor_version=@MOD_MINOR_VERSION@
patch_version=@MOD_PATCH_VERSION@

usage() {
    cat <<EOF
Usage: nss-config [OPTIONS] [LIBRARIES]
Options:
    [--prefix[=DIR]]
    [--exec-prefix[=DIR]]
    [--includedir[=DIR]]
    [--libdir[=DIR]]
    [--version]
    [--libs]
    [--cflags]
Dynamic Libraries:
    nss
    nssutil
    ssl
    smime
EOF
    exit
}

[ $# = 0 ] && usage

lib_ssl=yes
lib_smime=yes
lib_nss=yes
lib_nssutil=yes

while [ $# -gt 0 ]; do
    case "$1" in
        -*=*) optarg=${1##*=} ;;
        *)    optarg= ;;
    esac

    case $1 in
        --prefix=*)
            prefix=$optarg
        ;;

        --prefix)
            echo_prefix=yes
        ;;

        --exec-prefix=*)
            exec_prefix=$optarg
        ;;

        --exec-prefix)
            echo_exec_prefix=yes
        ;;

        --includedir=*)
            includedir=$optarg
        ;;

        --includedir)
            echo_includedir=yes
        ;;

        --libdir=*)
            libdir=$optarg
        ;;

        --libdir)
            echo_libdir=yes
        ;;

        --version)
            printf '%s\n' "${major_version}.${minor_version}.${patch_version}"
        ;;

        --cflags)
            echo_cflags=yes
        ;;

        --libs)
            echo_libs=yes
        ;;

        ssl)
            lib_ssl=yes
        ;;

        smime)
            lib_smime=yes
        ;;

        nss)
            lib_nss=yes
        ;;

        nssutil)
            lib_nssutil=yes
        ;;

        *)
            usage
        ;;
    esac
    shift
done

# Set variables that may be dependent upon other variables
[ "$exec_prefix" ] || exec_prefix=$(pkg-config --variable=exec_prefix nss)
[ "$includedir" ]  || includedir=$(pkg-config --variable=includedir nss)
[ "$libdir" ]      || libdir=$(pkg-config --variable=libdir nss)

[ "$echo_prefix" = yes ] &&
    printf '%s\n' "$prefix"

[ "$echo_exec_prefix" = yes ] &&
    printf '%s\n' "$exec_prefix"

[ "$echo_includedir" = yes ] &&
    printf '%s\n' "$includedir"

[ "$echo_libdir" = yes ] &&
    printf '%s\n' "$libdir"

[ "$echo_cflags" = yes ] &&
    printf '%s\n' "-I$includedir"

[ "$echo_libs" = yes ] && {
    libdirs="-Wl,-rpath-link,$libdir -L$libdir"

    [ "$lib_ssl" ]     && libdirs="$libdirs -lssl$major_version"
    [ "$lib_smime" ]   && libdirs="$libdirs -lsmime$major_version"
    [ "$lib_nss" ]     && libdirs="$libdirs -lnss$major_version"
    [ "$lib_nssutil" ] && libdirs="$libdirs -lnssutil$major_version"

    printf '%s\n' "$libdirs"
}