#!/bin/bash

#
# builds packages from given dir
#

# $Header: /home/cvsd/magellan-cvs/magellan-src/mage/usr/lib/mage/pkgbuild_dir.sh,v 1.15 2007-03-19 19:24:46 niro Exp $

# set default user mage.rc
: ${MAGERC="/etc/mage.rc"}

PKGSUFFIX="mpk"
PKGNAME="$1"
SEARCHDIRS="$2"
MLIBDIR=/usr/lib/mage

## only for tests -> normally in /etc/rc.d/init.d/functions
COLRED="\033[1;6m\033[31m"
COLGREEN="\033[1;6m\033[32m"
COLYELLOW="\033[1;6m\033[33m"
COLBLUE="\033[1;6m\033[34m"
COLMAGENTA="\033[1;6m\033[35m"
COLWHITE="\033[1;6m\033[37m"
COLGRAY="\033[0;6m\033[37m"
COLBOLD="\033[1m"
COLDEFAULT="\033[0m"

if [[ ${NOCOLORS} = true ]]
then
	COLRED=""
	COLGREEN=""
	COLYELLOW=""
	COLBLUE=""
	COLMAGENTA=""
	COLWHITE=""
	COLGRAY=""
	COLBOLD=""
	COLDEFAULT=""
fi

# export default C locale
export LC_ALL=C

[[ -z $1 ]] && echo "No package name given. Aborting." && exit 1
[[ -z $2 ]] && echo "No source dir given. Aborting." && exit 1

source /etc/mage.rc.global
[[ -f ${MAGERC} ]] && source ${MAGERC}
source ${MLIBDIR}/mage4.functions.sh

# set PKGDIR and BUILDDIR and BINDIR to MROOT
if [[ -n ${MROOT} ]]
then
	export PKGDIR=${MROOT}/${PKGDIR}
	export BUILDDIR=${MROOT}/${BUILDDIR}
	export BINDIR=${MROOT}/${BINDIR}
fi

build_preinstall()
{
	if [ -d ${BUILDDIR}/${PKGNAME} ]
	then
		rm -rf ${BUILDDIR}/${PKGNAME}
	fi

	install -d ${BUILDDIR}/${PKGNAME}/binfiles
	touch ${BUILDDIR}/${PKGNAME}/.dirs
	touch ${BUILDDIR}/${PKGNAME}/.symlinks
	touch ${BUILDDIR}/${PKGNAME}/.files
	touch ${BUILDDIR}/${PKGNAME}/.pipes
	touch ${BUILDDIR}/${PKGNAME}/.char
	touch ${BUILDDIR}/${PKGNAME}/.fifo
}

build_postinstall()
{
	local m_mtime
	local m_md5sum
	local filelist
	local item
	local check_srcdir
	local filetype
	local fileposix
	local fileowner
	local filegroup
	local lnkdest
	local filedir
	local char_major
	local char_minor

	echo -e "${COLBLUE}===${COLGREEN} fetching files for package '${PKGNAME}' ...${COLDEFAULT}"

	# md5sums will only be generated for files: $m_md5sum

	# sets mtime to same value of the $BINDIR: $m_mtime
	# only needed for files and symlinks
	m_mtime=$(stat -c %Y ${BINDIR})

	# install mtime to package (needed for later checks)
	echo "${m_mtime}" > ${BUILDDIR}/${PKGNAME}/.mtime

	# !! we use § as field seperator !!
	# doing so prevent us to get errors by filenames with spaces
	filelist=$(find ${SEARCHDIRS} -printf %p§)

	# sets fieldseperator to "§" instead of " "
	IFS=§

	for item in ${filelist}
	do
		check_srcdir="$(echo ${item#${SEARCHDIRS}*}|grep ${BUILDDIR})"

		if [[ -z ${check_srcdir} ]]
		then
			filetype="$(stat -c %F ${item})"
			fileposix="$(stat -c %a ${item})"
			fileowner="$(stat -c %U ${item})"
			filegroup="$(stat -c %G ${item})"

			[[ ${fileowner} = UNKNOWN ]] && fileowner="root"
			[[ ${filegroup} = UNKNOWN ]] && filegroup="root"

			case "${filetype}" in
				"directory")
					if [[ ${item} != ${SEARCHDIRS} ]]
					then
						echo "${item#${SEARCHDIRS}*}§${fileposix}§${fileowner}§${filegroup}" >> ${BUILDDIR}/${PKGNAME}/.dirs
					fi
					;;

				"symbolic link")
					lnkdest="$(readlink ${item})"
					echo "${item#${SEARCHDIRS}*}§${fileposix}§${lnkdest#${SEARCHDIRS}*}§${m_mtime}" >> ${BUILDDIR}/${PKGNAME}/.symlinks
					;;

				"regular empty file")
					filedir="$(dirname ${item})"
					filedir="${filedir#${SEARCHDIRS}*}"
					m_md5sum="$(md5sum ${item}|cut -d' ' -f1)"
					echo "${item#${SEARCHDIRS}*}§${fileposix}§${fileowner}§${filegroup}§${m_mtime}§${m_md5sum}" >> ${BUILDDIR}/${PKGNAME}/.files
					install -d ${BUILDDIR}/${PKGNAME}/binfiles/${filedir}
					cp ${item} ${BUILDDIR}/${PKGNAME}/binfiles/${filedir}
					;;

				"regular file" )
					filedir="$(dirname ${item})"
					filedir="${filedir#${SEARCHDIRS}*}"
					m_md5sum="$(md5sum ${item}|cut -d' ' -f1)"
					echo "${item#${SEARCHDIRS}*}§${fileposix}§${fileowner}§${filegroup}§${m_time}§${m_md5sum}" >> ${BUILDDIR}/${PKGNAME}/.files
					install -d ${BUILDDIR}/${PKGNAME}/binfiles/${filedir}
					cp ${item} ${BUILDDIR}/${PKGNAME}/binfiles/${filedir}
					;;

				"block special file")
					# convert hex2dec
					#  printf '%d' 0x12 -> 18
					char_major="$(printf 0x$(stat -c %t ${item}))"
					char_minor="$(printf 0x$(stat -c %T ${item}))"
					echo "${item#${SEARCHDIRS}*}§${fileposix}§${char_major}§${char_minor}§${fileowner}§${filegroup}" >> ${BUILDDIR}/${PKGNAME}/.pipes
					;;

				"character special file")
					# convert hex2dec
					#  printf '%d' 0x12 -> 18
					char_major="$(printf 0x$(stat -c %t ${item}))"
					char_minor="$(printf 0x$(stat -c %T ${item}))"
					echo "${item#${SEARCHDIRS}*}§${fileposix}§${char_major}§${char_minor}§${fileowner}§${filegroup}" >> ${BUILDDIR}/${PKGNAME}/.char
					;;

				"fifo")
					echo "${item#${SEARCHDIRS}*}§${fileposix}§${fileowner}§${filegroup}" >> ${BUILDDIR}/${PKGNAME}/.fifo
					;;

				*)
					echo "What I am ? -- $I"
					echo "$0 paused ... Press Enter"
					read
					;;
			esac
		fi
	done

	# very important: unsetting the '§' fieldseperator
	unset IFS

	# forcing mtime to same value
	echo -e "${COLBLUE}===${COLGREEN} forcing mtime to the same value ...${COLDEFAULT}"
	find ${BUILDDIR}/${PKGNAME}/binfiles -exec touch -m -r ${BUILDDIR}/${PKGNAME}/.mtime '{}' ';'
}

build_rmtimestamp()
{
	rm /var/tmp/timestamp
}

build_package()
{
	echo -e "${COLBLUE}===${COLGREEN} building package tarball ...${COLDEFAULT}"
	cd ${BUILDDIR}
	tar cvjf ${PKGNAME}.tar.bz2 ./${PKGNAME}
	install -d ${PKGDIR}
	mv ${PKGNAME}.tar.bz2 ${PKGDIR}/${PKGNAME}.${PKGSUFFIX}
}

build_preinstall
build_postinstall
build_package