#!/bin/sh

## live-build(7) - System Build Scripts
## Copyright (C) 2006-2013 Daniel Baumann <daniel@debian.org>
##
## 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="$(Echo 'create source checksums')"
HELP=""
USAGE="${PROGRAM} [--force]"

Arguments "${@}"

# Reading configuration files
Read_conffiles config/all config/common config/bootstrap config/chroot config/binary config/source
Set_defaults

if [ "${LB_CHECKSUMS}" = "none" ] || [ "${LB_SOURCE}" != "true" ]
then
	exit 0
fi

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

# Checking stage file
Check_stagefile .build/source_checksums

# Checking lock file
Check_lockfile .lock

# Creating lock file
Create_lockfile .lock

for DIRECTORY in source/debian source/debian-live
do
	if [ ! -d ${DIRECTORY} ]
	then
		continue
	fi

	for CHECKSUM in ${LB_CHECKSUMS}
	do
		case "${LB_MODE}" in
			progress-linux)
				CHECKSUMS="$(echo ${CHECKSUM} | tr [a-z] [A-Z])SUMS"
				;;

			*)
				CHECKSUMS="${CHECKSUM}sum.txt"
				;;
		esac

		Echo_message "Begin creating source ${CHECKSUMS}..."

		# Remove old checksums
		if [ -f ${DIRECTORY}/${CHECKSUMS} ]
		then
			rm -f ${DIRECTORY}/${CHECKSUMS}
		fi

		# Calculating checksums
		cd ${DIRECTORY}
		find . -type f \
			\! -path './*SUMS' \
			\! -path './*sum.txt' \
		-print0 | sort -z | xargs -0 ${CHECKSUM}sum > ../${CHECKSUMS}

cat > ${CHECKSUMS} << EOF
## This file contains the list of ${CHECKSUM} checksums of all files on this
## medium.
##
## You can verify them automatically with the 'verify-checksums' boot parameter,
## or, manually with: '${CHECKSUM}sum -c ${CHECKSUMS}'.
##
##
EOF

		cat ../${CHECKSUMS} >> ${CHECKSUMS}
		rm -f ../${CHECKSUMS}

		cd "${OLDPWD}"
	done

	# File list
	cd ${DIRECTORY}
	find . | sed -e 's|^.||g' | grep "^/" | sort > ../../$(echo ${DIRECTORY} | sed -e 's|/|.|').contents
	cd "${OLDPWD}"
done

# Creating stage file
Create_stagefile .build/source_checksums