#!/bin/sh -e
# Copyright 2005 The open-vcdiff Authors. All Rights Reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#      http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#
# Run this from the 'packages' directory, just under rootdir

# We can only build rpm packages, if the rpm build tools are installed
if [ \! -x /usr/bin/rpmbuild ]
then
  echo "Cannot find /usr/bin/rpmbuild. Not building an rpm." 1>&2
  exit 0
fi

# Check the commandline flags
PACKAGE="$1"
VERSION="$2"
fullname="${PACKAGE}-${VERSION}"
archive=../$fullname.tar.gz

if [ -z "$1" -o -z "$2" ]
then
  echo "Usage: $0 <package name> <package version>" 1>&2
  exit 0
fi

# Double-check we're in the packages directory, just under rootdir
if [ \! -r ../Makefile -a \! -r ../INSTALL ]
then
  echo "Must run $0 in the 'packages' directory, under the root directory." 1>&2
  echo "Also, you must run \"make dist\" before running this script." 1>&2
  exit 0
fi

if [ \! -r "$archive" ]
then
  echo "Cannot find $archive. Run \"make dist\" first." 1>&2
  exit 0
fi

# Create the directory where the input lives, and where the output should live
RPM_SOURCE_DIR="/tmp/rpmsource-$fullname"
RPM_BUILD_DIR="/tmp/rpmbuild-$fullname"

trap 'rm -rf $RPM_SOURCE_DIR $RPM_BUILD_DIR; exit $?' EXIT SIGHUP SIGINT SIGTERM

rm -rf "$RPM_SOURCE_DIR" "$RPM_BUILD_DIR"
mkdir "$RPM_SOURCE_DIR"
mkdir "$RPM_BUILD_DIR"

cp "$archive" "$RPM_SOURCE_DIR"

rpmbuild -bb rpm/rpm.spec \
  --define "NAME $PACKAGE" \
  --define "VERSION $VERSION" \
  --define "_sourcedir $RPM_SOURCE_DIR" \
  --define "_builddir $RPM_BUILD_DIR" \
  --define "_rpmdir $RPM_SOURCE_DIR"

# We put the output in a directory based on what system we've built for
destdir=rpm-unknown
if [ -r /etc/issue ]
then
   grep "Red Hat.*release 7" /etc/issue >/dev/null 2>&1 && destdir=rh7
   grep "Red Hat.*release 8" /etc/issue >/dev/null 2>&1 && destdir=rh8
   grep "Red Hat.*release 9" /etc/issue >/dev/null 2>&1 && destdir=rh9
   if grep Fedora /etc/issue >/dev/null; then 
	destdir=fc`grep Fedora /etc/issue | cut -d' ' -f 4`;
   fi
fi

rm -rf "$destdir"
mkdir -p "$destdir"
# We want to get not only the main package but devel etc, hence the middle *
mv "$RPM_SOURCE_DIR"/*/"${PACKAGE}"-*"${VERSION}"*.rpm "$destdir"

echo
echo "The rpm package file(s) are located in $PWD/$destdir"