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# Copyright 1999-2017 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2
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=()
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]}${m[l]}vK) # 5+1
#done
done
done
done
SRC_URI=""
for i in "${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
unset i j k m tb345
LICENSE="public-domain" # machine-generated tables
SLOT="0"
KEYWORDS="~amd64 ~x86"
IUSE="6-pieces"
# there is no use-conditional mirror restriction,
# so depend on another slot of the same package instead
PDEPEND="6-pieces? ( ~${CATEGORY}/${P}:nofetch )"
S="${WORKDIR}"
CHECKREQS_DISK_USR="939M"
CHECKREQS_DISK_BUILD="${CHECKREQS_DISK_USR}"
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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