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# Copyright 1999-2017 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2
# $Id$
EAPI=6
inherit check-reqs
DESCRIPTION="Syzygy chess endgame tablebases for up to 6 pieces"
HOMEPAGE="http://tablebase.sesse.net/
http://kirill-kryukov.com/chess/tablebases-online/"
tb345=()
tb6=()
m=(P N B R Q K)
for ((i=4; i>=0; i--)); do
tb345+=(K${m[i]}vK) # 2+1
for ((j=i; j>=0; j--)); do
tb345+=(K${m[i]}vK${m[j]} K${m[i]}${m[j]}vK) # 2+2, 3+1
for ((k=4; k>=0; k--)); do
tb345+=(K${m[i]}${m[j]}vK${m[k]}) # 3+2
((k<=i)) || continue
for ((l=k; l>=0; l--)); do
((k<i || l<=j)) && tb6+=(K${m[i]}${m[j]}vK${m[k]}${m[l]}) # 3+3
done
((k<=j)) || continue
tb345+=(K${m[i]}${m[j]}${m[k]}vK) # 4+1
for ((l=4; l>=0; l--)); do
tb6+=(K${m[i]}${m[j]}${m[k]}vK${m[l]}) # 4+2
((l<=k)) && tb6+=(K${m[i]}${m[j]}${m[k]}${m[l]}vK) # 5+1
done
done
done
done
for i in "${tb345[@]}"; do
SRC_URI+=" http://tablebase.sesse.net/syzygy/3-4-5/${i}.rtbw"
SRC_URI+=" http://tablebase.sesse.net/syzygy/3-4-5/${i}.rtbz"
done
SRC_URI+=" tb6? ("
for i in "${tb6[@]}"; do
SRC_URI+=" http://tablebase.sesse.net/syzygy/6-WDL/${i}.rtbw"
SRC_URI+=" http://tablebase.sesse.net/syzygy/6-DTZ/${i}.rtbz"
done
SRC_URI+=" )"
unset i j k l m tb345 tb6
LICENSE="public-domain"
SLOT="0"
KEYWORDS="~amd64 ~x86"
IUSE="tb6"
RESTRICT="mirror tb6? ( fetch )" # not on Gentoo mirrors
S="${WORKDIR}"
pkg_nofetch() {
local f
einfo "Due to their large size, fetching the Syzygy Endgame Tablebases"
einfo "via BitTorrent is recommended: http://oics.olympuschess.com/tracker/"
einfo "After downloading, place the following files in ${DISTDIR}:"
for f in ${A}; do
einfo "${f}"
done
}
pkg_pretend() {
CHECKREQS_DISK_USR=$(usex tb6 "151G" "939M")
CHECKREQS_DISK_BUILD="${CHECKREQS_DISK_USR}"
check-reqs_pkg_pretend
}
pkg_setup() {
CHECKREQS_DISK_USR=$(usex tb6 "151G" "939M")
CHECKREQS_DISK_BUILD="${CHECKREQS_DISK_USR}"
check-reqs_pkg_setup
}
src_unpack() { :; }
src_install() {
local f
insinto /usr/share/${PN}
for f in ${A}; do
[[ ${f} = *.rtb[wz] ]] && echo "${DISTDIR}"/${f}
done | xargs doins
}
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