#!/bin/bash

#
# builds packages from given dir
#

# $Header: /home/cvsd/magellan-cvs/magellan-src/mage/usr/lib/mage/pkgbuild_dir.sh,v 1.11 2006-01-01 23:46:08 niro Exp $

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

COLRED="\033[1;6m\033[31m"
COLGREEN="\033[1;6m\033[32m"
COLDEFAULT="\033[0m"

# 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

if [ -f /etc/mage.rc ]
then
	source /etc/mage.rc
else
	echo "Your /etc/mage.rc is missing. Aborting."
	exit 1
fi
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
}

build_postinstall()
{
	echo
	echo "Fetching files for package '${PKGNAME}' ..."

	# 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
	BUILD_TODELFILES=$(find ${SEARCHDIRS} -printf %p§)

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

	for I in $BUILD_TODELFILES
	do
		CHECK_SRCDIR="$(echo ${I#${SEARCHDIRS}*}|grep $BUILDDIR)"

		if [ -z "$CHECK_SRCDIR" ]
		then
			FILETYPE="$(stat -c %F $I)"
			FILEPOSIX="$(stat -c %a $I)"
			FILEOWNER="$(stat -c %U $I)"
			FILEGROUP="$(stat -c %G $I)"

			[[ ${FILEOWNER} = UNKNOWN ]] && FILEOWNER="root"
			[[ ${FILEGROUP} = UNKNOWN ]] && FILEGROUP="root"

			case "${FILETYPE}" in
				"directory")
					if [[ $I != ${SEARCHDIRS} ]]
					then
						echo "${I#${SEARCHDIRS}*}§${FILEPOSIX}§${FILEOWNER}§${FILEGROUP}" >> ${BUILDDIR}/${PKGNAME}/.dirs
					fi
					;;

				"symbolic link")
					LNKDEST="$(readlink $I)"
					echo "${I#${SEARCHDIRS}*}§${FILEPOSIX}§${LNKDEST#${SEARCHDIRS}*}§${M_MTIME}" >> ${BUILDDIR}/${PKGNAME}/.symlinks
					;;
					

				"regular empty file")
					FILEDIR="$(dirname $I)"
					FILEDIR="${FILEDIR#${SEARCHDIRS}*}"
					M_MD5SUM="$(md5sum ${I}|cut -d' ' -f1)"
					echo "${I#${SEARCHDIRS}*}§${FILEPOSIX}§${FILEOWNER}§${FILEGROUP}§${M_MTIME}§${M_MD5SUM}" >> ${BUILDDIR}/${PKGNAME}/.files
					install -d ${BUILDDIR}/${PKGNAME}/binfiles/${FILEDIR}
					cp ${I} ${BUILDDIR}/${PKGNAME}/binfiles/${FILEDIR}
					;;

				"regular file" )
					FILEDIR="$(dirname $I)"
					FILEDIR="${FILEDIR#${SEARCHDIRS}*}"
					M_MD5SUM="$(md5sum ${I}|cut -d' ' -f1)"
					echo "${I#${SEARCHDIRS}*}§${FILEPOSIX}§${FILEOWNER}§${FILEGROUP}§${M_MTIME}§${M_MD5SUM}" >> ${BUILDDIR}/${PKGNAME}/.files
					install -d ${BUILDDIR}/${PKGNAME}/binfiles/${FILEDIR}
					cp ${I} ${BUILDDIR}/${PKGNAME}/binfiles/${FILEDIR}
					;;

				"block special file")
					echo "${I#${SEARCHDIRS}*}§${FILEPOSIX}" >> ${BUILDDIR}/${PKGNAME}/.pipes
					;;

				"character special file")
					# convert hex2dec
					#  printf '%d' 0x12 -> 18
					local CHAR_MAJOR="$(printf 0x$(stat -c %t $I))"
					local CHAR_MINOR="$(printf 0x$(stat -c %T $I))"
					echo "${I#${SEARCHDIRS}*}§${FILEPOSIX}§${CHAR_MAJOR}§${CHAR_MINOR}" >> ${BUILDDIR}/${PKGNAME}/.char
					;;

				*)
					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 -n "Forcing mtime to the same value ..."
	find ${BUILDDIR}/${PKGNAME}/binfiles \
		-exec touch -m -r ${BUILDDIR}/${PKGNAME}/.mtime '{}' ';' \
		&& echo done || echo false
}

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

build_package()
{
	echo "Building Package ..."
	cd ${BUILDDIR}
	tar cvjf ${PKGNAME}.tar.bz2 ./${PKGNAME}
	install -d ${PKGDIR}
	mv ${PKGNAME}.tar.bz2 ${PKGDIR}/${PKGNAME}.${PKGSUFFIX}
}

build_preinstall
build_postinstall
build_package