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#!/bin/bash

# Copyright 2012-2014 Holger Levsen <holger@layer-acht.org>
# released under the GPLv=2

DEBUG=false
. /srv/jenkins/bin/common-functions.sh
common_init "$@"

replace_origin_pu() {
    PREFIX=$1 ; shift
    BRANCH=$1 ; shift
    expr "$BRANCH" : 'origin/pu/' >/dev/null || return 1
    echo "${PREFIX}${BRANCH#origin/pu/}"
}

clean_workspace() {
	#
	# clean
	#
	cd $WORKSPACE
	cd ..
	rm -fv *.deb *.udeb *.dsc *_*.build *_*.changes *_*.tar.gz *_*.tar.bz2 *_*.tar.xz *_*.buildinfo
	cd $WORKSPACE
	git clean -dfx
	git reset --hard
	#
	# git clone and pull is done by jenkins job
	#
	if [ -d .git ] ; then
		echo "git status:"
		git status
	elif [ -f .svn ] ; then
		echo "svn status:"
		svn status
	fi
	echo
}

pdebuild_package() {
	#
	# check if we need to do anything
	#
	if [ ! -f debian/control ] ; then
		# the Warning: will make the build end in status "unstable" but not "failed"
		echo "Warning: A source package without debian/control, so no build will be tried."
		return
	fi
	if [ $(dh_listpackages | sed '/^$/d' | wc -l) -eq 0 ]; then
		echo "This package is not supposed to be built on $(dpkg --print-architecture)"
		grep "Architecture:" debian/control
		return
	fi
	#
	# prepare build
	#
	if [ ! -f /var/cache/pbuilder/base.tgz ] ; then
		sudo pbuilder --create --http-proxy $http_proxy
	else
		ls -la /var/cache/pbuilder/base.tgz
		file /var/cache/pbuilder/base.tgz
		sudo pbuilder --update --http-proxy $http_proxy || ( sudo rm /var/cache/pbuilder/base.tgz ; sudo pbuilder --create )
	fi
	#
	# 3.0 quilt is not happy without an upstream tarball
	#
	if [ "$(cat debian/source/format)" = "3.0 (quilt)" ] ; then
		uscan --download-current-version --symlink
	fi
	#
	#
	# build (binary packages only, as sometimes we cannot get the upstream tarball...)
	#
	SOURCE=$(dpkg-parsechangelog |grep ^Source: | cut -d " " -f2)
	# workaround #767260 (console-setup doesn't support parallel build)
	if [ "$SOURCE" != "console-setup" ] ; then
		NUM_CPU=$(grep -c '^processor' /proc/cpuinfo)
	else
		NUM_CPU=1
	fi
	#
	# if we got a valid PU_GIT_BRANCH passed in as a parameter from the triggering job
	# then grab the generated udebs.  FIXME -- we need to work work out a way of cleaning up old branches
	#
	if PU_BRANCH_DIR=$(replace_origin_pu "/srv/udebs/" $PU_GIT_BRANCH) ; then
		cp $PU_BRANCH_DIR/* build/localudebs
	fi
	pdebuild --use-pdebuild-internal --debbuildopts "-j$NUM_CPU -b" -- --http-proxy $http_proxy
	# cleanup
	echo
	cat /var/cache/pbuilder/result/${SOURCE}_*changes
	echo
	sudo dcmd rm /var/cache/pbuilder/result/${SOURCE}_*changes
}

preserve_pu_udebs() {
    #
    # Check is we're in a pu/* branch
    #
    if PU_BRANCH_DIR=$(replace_origin_pu "/srv/udebs/" $GIT_BRANCH) ; then
        mkdir -p $PU_BRANCH_DIR
        cp $WORKSPACE/../*.udeb $PU_BRANCH_DIR
    fi
}

iso_target() {
    UI=$1 ; shift

    echo "/srv/d-i/isos/mini-${UI}$(replace_origin_pu "-" $PU_GIT_BRANCH).iso"
}

preserve_miniiso() {
    #
    # check if we built the images
    #
    IMAGETAR=../debian-installer-images_*.tar.gz
    [ -f $IMAGETAR ] || return 0

    tar -xvzf $IMAGETAR --no-anchored mini.iso
    mv -f installer-*/*/images/netboot/gtk/mini.iso $(iso_target gtk)
    mv -f installer-*/*/images/netboot/mini.iso $(iso_target text)
}

clean_workspace
#
# if $1 is not given, build the package normally,
# else...
#
if [ "$1" = "" ] ; then
	pdebuild_package
	preserve_pu_udebs
	preserve_miniiso
else
	echo do something else ; exit 1
fi
clean_workspace