Bash script to automate much of the work of upgrading a Debian Go package

build-latest-go-package.sh

#!/bin/bash
# Copyright © 2015–2018 Anthony Fok <foka@debian.org>
#
# SPDX-License-Identifier: Apache-2.0
#
# Credit: http://stackoverflow.com/questions/3231804/in-bash-how-to-add-are-you-sure-y-n-to-any-command-or-alias

set -e

git pull --ff-only
gbp pull

if [ -n "$1" ]; then
    GIT_REVISION="-git_revision $1"
fi

TMPDIR=/tmp/tmp-dh-make-golang
ARCH=$(dpkg-architecture -q DEB_BUILD_ARCH)

SRCPKG=$(grep ^Source: debian/control | cut -d' ' -f2)
GO_IMPORT_PATH=$(grep ^XS-Go-Import-Path: debian/control | cut -d' ' -f2)
OLD_VERSION=$(head -1 debian/changelog | sed -e 's/.*(\(.*\)).*/\1/')

#DH_MAKE_GOLANG=~/go/bin/dh-make-golang
DH_MAKE_GOLANG=/usr/bin/dh-make-golang
case $SRCPKG in
    golang-github-pkg-sftp)
        DH_MAKE_GOLANG=/usr/bin/dh-make-golang
        ;;
esac
echo Using $DH_MAKE_GOLANG to fetch our source


if [[ -z $SRCPKG || -z $GO_IMPORT_PATH || -z $OLD_VERSION ]]; then
	echo Error: Cannot continue.
	echo Source: \"$SRCPKG\"
	echo XS-Go-Import-Path: \"$GO_IMPORT_PATH\"
	echo Packaged version: \"$OLD_VERSION\"
	echo Are you sure you are inside a Debian Go package directory?
	exit 1
fi

echo XS-Go-Import-Path: $GO_IMPORT_PATH

echo
echo "=================================================================="
echo " Fetch the latest upstream tarball"
echo "=================================================================="

rm -rf $TMPDIR
mkdir $TMPDIR
pushd $TMPDIR

if [ "x$SRCPKG" = 'xhugo' ]; then
	$DH_MAKE_GOLANG make -type=program $GIT_REVISION $GO_IMPORT_PATH
	SRCPKG_DH=${SRCPKG}
else
	echo $DH_MAKE_GOLANG make -type=library $GIT_REVISION $GO_IMPORT_PATH
	$DH_MAKE_GOLANG make -type=library $GIT_REVISION $GO_IMPORT_PATH
	SRCPKG_DH=golang-${GO_IMPORT_PATH}
	SRCPKG_DH=${SRCPKG_DH//\//-}
	SRCPKG_DH=${SRCPKG_DH//_/-}
	SRCPKG_DH=${SRCPKG_DH/.org/}
	SRCPKG_DH=${SRCPKG_DH/.com/}
	SRCPKG_DH=${SRCPKG_DH/gopkg.in/gopkg}
	SRCPKG_DH=${SRCPKG_DH/google.golang/google}

    # Converts to lowercase
	SRCPKG_DH=${SRCPKG_DH,,}
fi

echo Canonical source package name: ${SRCPKG_DH}

ORIG_TARBALL_DH=$(echo ${SRCPKG_DH}_*.orig.tar.xz)
NEW_VERSION=$(head -1 ${SRCPKG_DH}/debian/changelog | sed -e 's/.*(\(.*\)).*/\1/')
CHANGES_FILE_DH=${ORIG_TARBALL_DH%.orig.tar.xz}-1_${ARCH}.changes

# Special case for packages that used 0.0+git instead of 0.0~git
case $SRCPKG in
    golang-check.v1 | golang-yaml.v2)
        SC_ORIG_TARBALL_DH=${ORIG_TARBALL_DH/_0.0~git/_0.0+git}
        mv -vi $ORIG_TARBALL_DH $SC_ORIG_TARBALL_DH

        NEW_VERSION=${NEW_VERSION/#0.0~git/0.0+git}
        CHANGES_FILE_DH=${CHANGES_FILE_DH/_0.0~git/_0.0+git}
        ORIG_TARBALL_DH=$SC_ORIG_TARBALL_DH
        ;;
esac

ORIG_TARBALL=${ORIG_TARBALL_DH/$SRCPKG_DH/$SRCPKG}
CHANGES_FILE=${CHANGES_FILE_DH/$SRCPKG_DH/$SRCPKG}
popd

# Remove epoch from old version
OLD_VERSION=${OLD_VERSION/#1:/}

echo
echo "       Packaged version:  $OLD_VERSION"
echo "       Attempted version: $NEW_VERSION"
echo
if [ "x$SRCPKG" = "x$SRCPKG_DH" ]; then
    echo PkgName: $SRCPKG
    echo tarball: $ORIG_TARBALL
    echo changes: $CHANGES_FILE
else
    echo "PkgName: $SRCPKG_DH → $SRCPKG"
    echo "tarball: $ORIG_TARBALL_DH"
    echo "         → $ORIG_TARBALL"
    echo "changes: $CHANGES_FILE_DH"
    echo "         → $CHANGES_FILE"
fi
echo old ver: $OLD_VERSION
echo new ver: $NEW_VERSION
echo

if dpkg --compare-versions "$OLD_VERSION" ge "$NEW_VERSION"
then
	echo "Error: The packaged is already the latest!"
	echo
	exit 1
fi

echo
echo "=================================================================="
echo " Preparing to import the upstream tarball"
echo "=================================================================="
echo
mv -iv $TMPDIR/$ORIG_TARBALL_DH ../$ORIG_TARBALL
case $SRCPKG in
    golang-github-hashicorp-go-multierror | \
    golang-golang-x-tools | \
    go-md2man | \
    golang-testify | \
    govendor)
        echo Repacking upstream tarball...
        echo
        NEW_UPSTREAM_VERSION=${NEW_VERSION%-1}
        NEW_UPSTREAM_VERSION=${NEW_UPSTREAM_VERSION#*:}
        REPACKED_TARBALL=${ORIG_TARBALL%.orig.tar.xz}+ds.orig.tar.xz
        XZ_OPT=-9e mk-origtargz --version $NEW_UPSTREAM_VERSION \
            --repack --repack-suffix +ds \
            --compression xz ../$ORIG_TARBALL
        ORIG_TARBALL=$REPACKED_TARBALL
        CHANGES_FILE=${CHANGES_FILE/-1_/+ds-1_}
        ;;
    golang-github-muesli-smartcrop)
        echo Repacking upstream tarball...
        echo
        NEW_UPSTREAM_VERSION=${NEW_VERSION%-1}
        NEW_UPSTREAM_VERSION=${NEW_UPSTREAM_VERSION#*:}
        REPACKED_TARBALL=${ORIG_TARBALL%.orig.tar.xz}+dfsg1.orig.tar.xz
        XZ_OPT=-9e mk-origtargz --version $NEW_UPSTREAM_VERSION \
            --repack --repack-suffix +dfsg1 \
            --compression xz ../$ORIG_TARBALL
        ORIG_TARBALL=$REPACKED_TARBALL
        CHANGES_FILE=${CHANGES_FILE/-1_/+dfsg1-1_}
        ;;
    *)
        echo No repacking needed, continue...
        echo
        ;;
esac
#gbp import-orig --sign-tags ../$ORIG_TARBALL

read -r -p "Are you sure you want to continue? [Y/n] " response
response=${response,,}		# tolower
if [[ $response =~ ^(no|n)$ ]]
then
    exit 0
fi

gbp import-orig ../$ORIG_TARBALL

echo
echo "=================================================================="
echo " Edit the commit message"
echo "=================================================================="

read -r -p "Are you ready to commit debian/changelog now? [y/N] " response
response=${response,,}		# tolower

if [[ $response =~ ^(yes|y)$ ]]
then
	gbp dch --release --commit --auto --full
else
	cat <<EOF
You still have to run these commands:

	gbp dch --release --commit --auto --full
	gbp buildpackage --git-pbuilder --git-sign-tags --git-tag
	debc | less
	lintian ../$CHANGES_FILE
	debsign ../$CHANGES_FILE
	gbp push
	dput ../$CHANGES_FILE

EOF
fi

echo
echo "=================================================================="
echo " Ready to build the package"
echo "=================================================================="

read -r -p "Are you sure you want to continue? [y/N] " response
response=${response,,}		# tolower

if [[ $response =~ ^(yes|y)$ ]]
then
	gbp buildpackage --git-pbuilder --git-sign-tags --git-tag
	debc | less
	lintian ../$CHANGES_FILE
else
	cat <<EOF
You still have to run these commands:

	gbp buildpackage --git-pbuilder --git-sign-tags --git-tag
	debc | less
	lintian ../$CHANGES_FILE
	debsign ../$CHANGES_FILE
	gbp push
	dput ../$CHANGES_FILE

EOF
fi

echo
echo "=================================================================="
echo " Ready to sign and upload the package"
echo "=================================================================="

read -r -p "Are you sure you want to continue? [y/N] " response
response=${response,,}		# tolower

if [[ $response =~ ^(yes|y)$ ]]
then
	debsign ../$CHANGES_FILE
	gbp push
	#http_proxy= HTTP_PROXY= https_proxy= HTTPS_PROXY= dput ../$CHANGES_FILE
	#dput ssh-upload ../$CHANGES_FILE
	dput ../$CHANGES_FILE
else
	cat <<EOF
You still have to run these commands:

	debsign ../$CHANGES_FILE
	gbp push
	dput ../$CHANGES_FILE

EOF
fi