live-build/scripts/build/binary_zsync

#!/bin/sh

## live-build(7) - System Build Scripts
## Copyright (C) 2016-2020 The Debian Live team
## Copyright (C) 2006-2015 Daniel Baumann <mail@daniel-baumann.ch>
##
## This program comes with ABSOLUTELY NO WARRANTY; for details see COPYING.
## This is free software, and you are welcome to redistribute it
## under certain conditions; see COPYING for details.


set -e

# Including common functions
[ -e "${LIVE_BUILD}/scripts/build.sh" ] && . "${LIVE_BUILD}/scripts/build.sh" || . /usr/lib/live/build.sh

# Setting static variables
DESCRIPTION="Build zsync control files"
USAGE="${PROGRAM} [--force]"

# Processing arguments and configuration files
Init_config_data "${@}"

if [ "${LIVE_IMAGE_TYPE}" != "iso" ] && [ "${LIVE_IMAGE_TYPE}" != "iso-hybrid" ]
then
	exit 0
fi

if [ "${LB_ZSYNC}" != "true" ]
then
	exit 0
fi

Echo_message "Begin building zsync control files..."

# Requiring stage file
Require_stagefile .build/config .build/bootstrap

# Checking stage file
Check_stagefile .build/binary_zsync

# Aquire lock file
Acquire_lockfile

# Checking depends
Check_package chroot /usr/bin/zsyncmake zsync

# Restoring cache
Restore_package_cache binary

# Installing depends
Install_package

case "${LIVE_IMAGE_TYPE}" in
	iso)
		_IMAGES="${LIVE_IMAGE_NAME}-${LB_ARCHITECTURES}.iso"
		;;

	iso-hybrid)
		_IMAGES="${LIVE_IMAGE_NAME}-${LB_ARCHITECTURES}.hybrid.iso"
		;;

	hdd)
		_IMAGES="${LIVE_IMAGE_NAME}-${LB_ARCHITECTURES}.img"
		;;

	net)
		_IMAGES="${LIVE_IMAGE_NAME}-${LB_ARCHITECTURES}.netboot.tar*"
		;;

	tar)
		_IMAGES="${LIVE_IMAGE_NAME}-${LB_ARCHITECTURES}.tar*"
		;;
esac

for _IMAGE in ${_IMAGES}
do
	if [ -e "${_IMAGE}" ]
	then
		case "${LB_BUILD_WITH_CHROOT}" in
			true)
				mv ${_IMAGE} chroot
				Chroot chroot "zsyncmake -C -b 2048 -u ${_IMAGE} ${_IMAGE}"
				mv chroot/${_IMAGE} chroot/${_IMAGE}.zsync ./
				;;

			false)
				zsyncmake -C -b 2048 -u "${_IMAGE}" "${_IMAGE}"
				;;
		esac

		case "${LB_COMPRESSION}" in
			bzip2)
				bzip2 ${BZIP2_OPTIONS} ${_IMAGE}.zsync
				;;

			gzip)
				gzip ${GZIP_OPTIONS} ${_IMAGE}.zsync
				;;

			lzip)
				lzip ${LZIP_OPTIONS} ${_IMAGE}.zsync
				;;

			xz)
				xz ${XZ_OPTIONS} ${_IMAGE}.zsync
				;;

			none)
				;;
		esac
	fi
done

#CHECKSUMS

# Saving cache
Save_package_cache binary

# Removing depends
Remove_package

# Creating stage file
Create_stagefile .build/binary_zsync