release.sh

#!/bin/sh
####################################
# prepare package for release

# DONE: get current version from configure.ac
# DONE: ChangeLog generator using git-dch
# DONE: update configure.ac
# TODO: automatically update AUTHORS
# TODO: automatically prepare NEWS (from ChangeLog)
# TODO: automatically launch editors for ChangeLog/NEWS/AUTHORS
# TODO: automatically tag (if all went well)

CHANGELOG=CHANGELOG
NEWS=NEWS
AUTHORS=AUTHORS

error() {
  echo "$@" 1>&2
}
fatal() {
  error "$@"
  exit 1
}
usage() {
 fatal "usage: $0 [<LASTVERSION>] <CURVERSION>" 1>&2
}

getoldversion () {
  dpkg-parsechangelog --count 1 -l${CHANGELOG} |  egrep "^Version:" | head -1 | cut -f2 -d' '
}
getmoduleversion() {
    grep "^AC_INIT" configure.ac |
        sed -e 's|[^,]*,||' \
            -e 's|,.*||' \
            -e 's|[][]||g'
}
getgitbranch() {
  git rev-parse --abbrev-ref HEAD
}

if [ -d "debian/" ]; then
    fatal "debian/ directory exists"
fi

if [ "$(getgitbranch)" != "master" ]; then
 fatal "current branch '$(getgitbranch)' is not 'master'"
fi

if [ "x$2" = "x" ]; then
## guess current version
 NEWVERSION=$1
 OLDVERSION=$(getoldversion)
else
 OLDVERSION=$1
 NEWVERSION=$2
fi

if [ "x${NEWVERSION}" = "x" ]; then
  NEWVERSION=$(getmoduleversion)
fi

if git tag -l v${OLDVERSION} | grep . >/dev/null
then
 :
else
 fatal "it seems like there is no tag 'v${OLDVERSION}'"
fi

if [ "x${OLDVERSION}" = "x" ]; then
 usage
fi

echo "updating from ${OLDVERSION}"

if [ "x${NEWVERSION}" = "x" ]; then
 usage
fi

if dpkg --compare-versions ${OLDVERSION} ge ${NEWVERSION}
then
 fatal "version mismatch: ${NEWVERSION} is not newer than ${OLDVERSION}"
fi

echo "updating to ${NEWVERSION}"

OK=false
mkdir debian
touch debian/control
cp ${CHANGELOG} debian/changelog
gbp dch -R --since "v${OLDVERSION}" -N "${NEWVERSION}" && cat debian/changelog > ${CHANGELOG} && OK=true
dch --news ${NEWS} || OK=false
rm -rf debian

if [ "x${OK}" = "xtrue" ]; then
    sed -e "s|^\(AC_INIT[^,]*\),[[][^,]*[]],\(.*\)|\1,[${NEWVERSION}],\2|" -i configure.ac
fi

if [ "x${OK}" = "xtrue" ]; then
 echo "all went well"
 echo ""
 echo "- please check your ${CHANGELOG}"
 echo "- please check&edit your ${NEWS}"
 echo "- please check&edit your ${AUTHORS}"
 echo "- and don't forget to git-tag the new version as v${NEWVERSION}"
 echo " git tag v${NEWVERSION} -m \"released v${NEWVERSION}\""
else
 fatal "ouch, something went wrong..."
fi