#!/usr/bin/env bash
#
# This script builds a snapshot RPM package of already existing Sofia-SIP
# build tree
#
# Copyright (C) 2006 Nokia Corporation.
#
# Contact: Pekka Pessi <pekka.pessi@nokia.com>
#
# This library is free software; you can redistribute it and/or
# modify it under the terms of the GNU Lesser General Public License
# as published by the Free Software Foundation; either version 2.1 of
# the License, or (at your option) any later version.
#
# This library 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
# Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public
# License along with this library; if not, write to the Free Software
# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
# 02110-1301 USA
#
# Created: Fri May 23 17:16:54 EEST 2003 ppessi
#

function usage
{
  echo "usage: snapshot.sh [-bc|-bb] [-c|--configure] [rpmbuild options]"
  exit $@
}

bb=-bb
configure=0

case "$1" in -b? ) bb=$1 ; shift ;; esac

while true ; do
  case "$1" in
  -c | --configure | --co ) configure=1; shift; ;;
  '-?' | --help | -h ) usage 0 ;;
  *) break ;;
  esac
done

test -z "$srcdir" && srcdir=.
RPMROOT=${RPMROOT:-`rpmbuild --eval='%_topdir' --quiet 2> /dev/null`}

c=$srcdir/configure.ac

PACKAGE_NAME=$(sed -n '/^AC_INIT/ { s/[^[]*\[//; s/\].*//; p;}' $c)
NAME=$(echo $PACKAGE_NAME | tr 'A-Z ' 'a-z-')
VERSION=$(sed -n '/^AC_INIT/ { s/.*\], \[//; s/\].*//; p;}' $c)
GLIB_SOVER=$(sed -n '/^AC_SUBST[(]LIBVER_SOFIA_SIP_UA_GLIB_SOVER/ { s/.*, \[//; s/\].*//; p;}' $c)

# Find spec in
if test -r $NAME.spec.in ; then
    specin=$NAME.spec.in
elif test -r packages/$NAME.spec.in ; then
    specin=packages/$NAME.spec.in
else
    echo $NAME.spec.in: not found
    exit 2
fi

specversion=$(sed -n -e '/^Version:/ { s/Version: //; p }' ${specin%.in})

if [ "$VERSION" != "$specversion" ]; then
  configure=1
fi

RELEASE=${RELEASE:-SNAP.$(date +"%Y%m%d.%H%M")}

test -r config.status &&
prefix=$(sed -n '/^s,@prefix@,/ { s/^s,[^,]*,//; s/,.*//; p;}' config.status)

test -z "$prefix" && prefix=/usr

wd=${TEMPDIR:=/tmp}/sofia-snapshot-$$
spec=$wd/$NAME-${VERSION}-${RELEASE}.spec
dummy=${NAME}-${VERSION}-${RELEASE}.tar.gz

test -x ./configure || sh ./autogen.sh

install -d ${RPMROOT}/{SOURCES/SNAP,SPECS,BUILD,RPMS,SRPMS} $wd &&
echo Creating $spec &&
awk '
/@VERSION@/ { sub(/@VERSION@/, version); }
/@PACKAGE@/ { sub(/@PACKAGE@/, package); }
/@PACKAGE_NAME@/ { sub(/@PACKAGE_NAME@/, package_name); }
/@LIBVER_SOFIA_SIP_UA_GLIB_SOVER@/ {
  sub(/@LIBVER_SOFIA_SIP_UA_GLIB_SOVER@/, glib_sover);
}
/^Release:/ {
  print "Release: " release "%{?dist}\n";
  print "Prefix: " prefix "\n";
  next;
}
/^Source0:/ { print "Source0:" dummy "\n"; next; }
/disable-dependency-tracking/ {
  sub(/--disable-dependency-tracking/, "");
}
/^%configure/ {
 print "cd " "\"" pwd "\"";
 if (!configure) { $1="echo skipping configure"; }
 $1=$1 "-C --enable-maintainer-mode";
 print $0;
 next;
}
# Do not make documentation
/^make doc/ { print "echo skipping " $0; next; }
# Ignore CFLAGS set by RPM
/^make/ { print "CFLAGS= " $0; next; }
{ print; }' \
pwd=$PWD \
configure=$configure dummy=$dummy \
package=$NAME package_name="$PACKAGE_NAME" \
version=$VERSION release=$RELEASE glib_sover=$GLIB_SOVER prefix=$prefix \
$specin > $spec &&
ln -s `pwd` $wd/${NAME}-${VERSION} &&
tar cfz ${RPMROOT}/SOURCES/SNAP/$dummy -C $wd ${NAME}-${VERSION} &&
rpmbuild $bb $spec --define '__os_install_post /usr/lib/rpm/brp-compress' --without docs -D"_sourcedir ${RPMROOT}/SOURCES/SNAP" "$@"
rc=$?

rm -rf $wd
rm ${RPMROOT}/SOURCES/SNAP/$dummy

exit $rc