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# ProteanOS Development Kit
# lib/profiles/proteanos.sh
# ProteanOS architecture detection and feeds lists.
#
# Copyright (C) 2013  Patrick "P. J." McDermott
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.

# TODO: This should be replaced with a prof_proteanos_validate_archplat()
# function that gets valid architectures and platforms from the package archive
# (which pro-archman needs to list in the distribution).
prof_proteanos_archplats='
amd64-linux-glibc                       dev
i686-linux-glibc                        dev
i686-linux-glibc                        ao751h
i686-linux-glibc                        dimension2400
i686-linux-glibc                        x60
'
prof_proteanos_fstab_linux="\
proc   /proc    proc   defaults
sys    /sys     sysfs  defaults
/dev   /dev     none   bind
devpts /dev/pts devpts noexec,nosuid,gid=5,mode=0620
"

prof_proteanos_normalize_suite()
{
	local suite="${1}"

	case "${suite}" in
		*/*) printf '%s\n' "${suite}";;
		*)   printf 'dev/%s\n' "${suite}";;
	esac

	return 0
}

prof_proteanos_detect_arch()
{
	local uname_m=
	local uname_s=
	local arch=

	uname_m="$( (uname -m) 2>/dev/null)" || uname_m='unknown'
	uname_s="$( (uname -s) 2>/dev/null)" || uname_s='unknown'

	case "${uname_m}:${uname_s}" in
		'x86_64:Linux')
			arch='amd64-linux-glibc'
			;;
		'i686:Linux')
			arch='i686-linux-glibc'
			;;
		*)
			arch=''
	esac

	printf '%s\n' "${arch}"
}

prof_proteanos_default_plat()
{
	printf 'dev\n'
}

prof_proteanos_select_mirror()
{
	local rand=
	local mirror=

	rand=$(date '+%S')
	rand=$(($rand % 2))
	case ${rand} in
		0)
			mirror='http://mirror.gnu.dk/pub/proteanos'
			;;
		1)
			mirror='http://mirror.oss.maxcdn.com/proteanos'
			;;
	esac

	printf '%s\n' "${mirror}"
}

prof_proteanos_feeds()
{
	local mirror="${1}"
	local arch="${2}"
	local plat="${3}"
	local suite="${4}"
	local a=
	local p=
	local s=
	
	for a in "${arch}" 'all'; do
		for p in "${plat}" 'all'; do
			for s in 'base'; do
				printf 'proteanos_%s_%s_%s_%s_%s ' \
					"${suite%/*}" "${suite#*/}" \
					"${a}" "${p}" "${s}"
				printf '%s/feeds/%s/%s/%s/%s/Packages\n' \
					"${mirror}" "${suite}" \
					"${a}" "${p}" "${s}"
			done
		done
	done

	for s in 'base'; do
		printf 'proteanos_%s_%s_%s_%s_%s ' \
			"${suite%/*}" "${suite#*/}" \
			'src' 'all' "${s}"
		printf '%s/feeds/%s/%s/%s/%s/Packages\n' \
			"${mirror}" "${suite}" \
			'src' 'all' "${s}"
	done
}

prof_proteanos_dep_fields()
{
	printf 'Depends Pre-Depends'
}

prof_proteanos_include_pkg()
{
	local name="${1}"
	local value="${2}"

	if [ "x${name}" = 'xPackage' ]; then
		case "${value}" in
			base-files|busybox|libc.6|opkg)
				return 0
				;;
			linux-image|proteanos-branding)
				return 0
				;;
		esac
	fi

	return 1
}

prof_proteanos_get_fstab()
{
	local arch="${1}"
	local plat="${2}"

	case "${arch}" in
		*-linux-*)
			printf '%s\n' "${prof_proteanos_fstab_linux}"
			;;
	esac
}