#!/bin/sh

# find rpm provides and requires for Haskell GHC libraries

[ $# -ne 2 ] && echo "Usage: `basename $0` [--provides|--requires] %{buildroot}%{ghclibdir}" && exit 1

set +x

MODE=$1

PKGBASEDIR=$2

PKGCONFDIR=$PKGBASEDIR/package.conf.d

case $MODE in

    --provides) FIELD=id ;;

    --requires) FIELD=depends ;;

    *) echo "`basename $0`: Need --provides or --requires" ; exit 1

esac

files=$(cat)

for i in $files; do

    case $i in

        # exclude builtin_rts.conf

	$PKGCONFDIR/*-*.conf)

	    PKGVER=$(echo $i | sed -e "s%$PKGCONFDIR/\(.\+\)-.\+.conf%\1%")

	    OUT=$(/usr/lib/rpm/ghc-pkg-wrapper $PKGBASEDIR field $PKGVER $FIELD | sed -e "s/^depends: \+//" -e "s/rts//" -e "s/bin-package-db-[^ ]\+//")

	    for d in $OUT; do

		case $d in

		    *-*) echo "ghc-devel($d)" ;;

		    *) ;;

		esac

	    done

	    ;;

        *)

            ;;

    esac

done