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#!/bin/sh

set -e

SCRIPT_DIR=
ARCH=

main()
{
	SCRIPT_DIR="$(cd "${0%/*}" && pwd)"
	ARCH="$(cat /etc/proteanos_arch)"

	cat <<-EOF
		Preparing packages for bootstrap...
		===================================
		EOF

	prepare_packages_from_git
	prepare_packages_from_ftp
	patch_packages
}

log()
{
	local msg i

	msg="$(printf "${@}")"
	printf '\n%s\n' "${msg}"
	i=0
	while [ ${i} -lt ${#msg} ]; do
		printf '-'
		i=$(($i + 1))
	done
	printf '\n\n'
}

prepare_packages_from_git()
{
	local repo

	[ -d pkg ] || mkdir pkg
	cd pkg

	for repo in zlib toolchains/binutils linux-libre eglibc \
			gmp toolchains/gcc-4.7 toolchains/gcc-defaults \
			busybox gmake; do
		log 'Preparing package %s...' "${repo##*/}"
		if [ ! -d "${repo##*/}" ]; then
			git clone --depth 1 \
				"git://git.proteanos.com/pkg/${repo}.git"
		fi
		cd "${repo##*/}"
		git pull origin master
		if [ -x config ]; then
			./config clean
			PKG_TARGETS="${ARCH}" ./config
		fi
		if [ -f source.mk -a ! -f "${repo##*/}"*.orig.tar* ]; then
			opkbuild -bCT source
		fi
		opkbuild -SC
		cd ..
	done

	cd ..
}

prepare_packages_from_ftp()
{
	local pkg src_opk path

	cd pkg

	for pkg in mpc mpfr; do
		log 'Preparing package %s...' "${pkg}"
		if [ ! -d "${pkg}" ]; then
			src_opk="src-${pkg}_*_src_all.opk"
			path="pub/pkg/${pkg}/${src_opk}"
			wget "ftp://files.proteanos.com/${path}"
			tar -xzOf ${src_opk} data.tar.gz | tar -xz
			mv "usr/src/${pkg}_"* "${pkg}"
		fi
	done
	[ -d usr/src ] && rmdir usr/src
	[ -d usr ] && rmdir usr

	cd ..
}

patch_packages()
{
	local dir patch

	cd pkg

	for dir in */; do
		log 'Patching package %s...' "${dir%/}"
		if [ -d "${SCRIPT_DIR}/patches/${dir}" ]; then
			for patch in "${SCRIPT_DIR}/patches/${dir}"*; do
				patch -N -p 1 -u -d "${dir}" -i "${patch}"
			done
		fi
	done

	cd ..
}

main "${@}"