#!/bin/bash
#
# do a smartmontools release
# (C) 2003-11 Bruce Allen, Guido Guenther
# (C) 2006-15 Christian Franke
# $Id: do_release 4071 2015-04-26 18:25:12Z chrfranke $

# Notes on generating releases:
# (1) update NEWS
# (2) update ChangeLog -- put in release number
# (3) update release number in configure.ac
# (4) to test, run without '--commit'
# (5) when satisfied, add option '--commit'

set -e

# Smartmontools Signing Key (through 2016)
KEYID=0xC4A4903A

inc_release()
{
  MINOR=`echo $VERSION | cut -d. -f2`
  MAJOR=`echo $VERSION | cut -d. -f1`
  PERL_OLD=$MAJOR\\.$MINOR
  ((++MINOR))
  NEW_VERSION=$MAJOR.$MINOR
  PERL_NEW=$MAJOR\\.$MINOR	
  NEW_RELEASE="RELEASE_${NEW_VERSION//\./_}"
  echo "New Version: $NEW_VERSION"
  echo "New Release: $NEW_RELEASE"
}

COMMIT=
RC=

case "$1" in
  --commit) COMMIT=yes; shift ;;
esac

case "$*" in
  RC[1-9]) RC="$1" ;;
  FINAL) ;;
  *) echo "Usage: $0 [--commit] RC[1-9]|FINAL"; exit 1 ;;
esac

# Check workdir
case "`/bin/pwd`" in
  */trunk/smartmontools)      WDROOT="../..";    DIRPAT="trunk"      ;;
  */branches/*/smartmontools) WDROOT="../../.."; DIRPAT="branches/*" ;;
  *) echo "`/bin/pwd`: no trunk or branch working dir"; exit 1 ;;
esac

if [ ! -d "$WDROOT/tags" ]; then
  echo "tags directory missing"; exit 1
fi

REVX="`(cd $WDROOT && svnversion)`" || exit 1
REV="${REVX/%[PM]/}"; REV="${REV/%[PM]/}"
if [ -n "${REV//[0-9]/}" ]; then
  echo "Working directory not clean: $REVX"; exit 1
fi

(cd $WDROOT && svn status) | while read s; do
  case "`echo $s | tr -s ' '`" in
    "M "$DIRPAT/smartmontools/ChangeLog)    echo "$s: OK";;
    "M "$DIRPAT/smartmontools/NEWS)         echo "$s: OK";;
    "M "$DIRPAT/smartmontools/configure.ac) echo "$s: OK";;
    *) echo "$s: not allowed"; exit 1;;
  esac
done
if [ $? -ne 0 ]; then
  exit 1
fi

# Get release number
VERSION=`sed -n 's|^AC_INIT[^,]*, *\([0-9.]*\) *,.*$|\1|p' configure.ac`
if [ -z "$VERSION" ]; then
  echo "AC_INIT not found in configure.ac"; exit 1
fi
VERSIONRC="$VERSION"
RELEASE="RELEASE_${VERSION//\./_}"

if [ "$RC" ]; then
  VERSIONRC="${VERSION}-${RC/#RC/rc}"
  RELEASE="${RELEASE}_${RC}"
fi

if [ -e "$WDROOT/tags/$RELEASE" ]; then
  echo "tags/$RELEASE exists"; exit 1
fi

echo "r$REV: Release $VERSIONRC $RELEASE"

# Update timestamp
smartmontools_release_date=`date -u +"%Y-%m-%d"`
smartmontools_release_time=`date -u +"%T %Z"`
cat configure.ac  | sed "s|smartmontools_release_date=.*|smartmontools_release_date=${smartmontools_release_date}|" > configure.tmp
cat configure.tmp | sed "s|smartmontools_release_time=.*|smartmontools_release_time=\"${smartmontools_release_time}\"|" > configure.ac
rm -f configure.tmp

# Review changes
svn diff
echo "==================================================================="
echo ">>> Continuing in 20 seconds ..."
sleep 20
set -v

# Create tag and commit
if [ "$COMMIT" = "yes" ]; then
  svn mkdir $WDROOT/tags/$RELEASE
  svn copy ../smartmontools $WDROOT/tags/$RELEASE/smartmontools
  svn commit -m "Release $VERSIONRC $RELEASE" $WDROOT
fi

# Build
./autogen.sh

mkdir build
cd build
../configure
make distcheck || exit 1
make maintainer-clean
cd ..

TARFILE=smartmontools-$VERSIONRC.tar.gz

mv -f build/smartmontools-$VERSION.tar.gz $TARFILE
rm -rvf build

md5sum $TARFILE > $TARFILE.md5

# Increase release number
if [ -z "$RC" -a "$DIRPAT" = "trunk" ]; then
  inc_release
  if [ "$COMMIT" = "yes" ]; then
    perl -p -i.bak -e "s/$PERL_OLD/$PERL_NEW/" configure.ac
    # svn commit -m "Bump release number to $NEW_VERSION" configure.ac
  fi
fi

# Sign tarball
if [ -n "$KEYID" ] && gpg --list-secret-keys $KEYID >/dev/null 2>/dev/null; then
  gpg --default-key $KEYID --armor --detach-sign ./smartmontools-$VERSIONRC.tar.gz
fi

