#!/bin/sh

# Copyright (C) 2008-2009 Red Hat, Inc
# Written by Jens Petersen <petersen@redhat.com>, 2008.
#
# 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, 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.

set -e

FILE=$1

[ $# -ne 1 -o ! -r "$FILE" ] && echo "Usage: $(basename $0) hackage" && exit 1

WORKDIR=$(mktemp --tmpdir=. -d)

cd $WORKDIR

RUNDIR=$(dirname $0)
if [ -x "$RUNDIR/cabal2spec" ]; then
  PREFIX=$RUNDIR/
fi

${PREFIX}cabal2spec ../$FILE

SPECFILE=$(ls *.spec)

cd -

[ ! -r "$SPECFILE" ] && echo No spec file found for $FILE && exit 1

diff -uw $SPECFILE $WORKDIR/$SPECFILE | sed -e "s%$WORKDIR/$SPECFILE%$SPECFILE.cabal2spec%"

[ -d "$WORKDIR" ] && rm -r $WORKDIR
