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82 lines
2.2 KiB
82 lines
2.2 KiB
# Copyright 1999-2023 Gentoo Authors
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# Distributed under the terms of the GNU General Public License v2
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EAPI=8
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inherit check-reqs
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DESCRIPTION="Syzygy chess endgame tablebases for up to 6 pieces"
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HOMEPAGE="http://tablebase.sesse.net/
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https://kirill-kryukov.com/chess/tablebases-online/"
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tb345=()
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tb6=()
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m=(P N B R Q K)
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for ((i=4; i>=0; i--)); do
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tb345+=(K${m[i]}vK) # 2+1
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for ((j=i; j>=0; j--)); do
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tb345+=(K${m[i]}vK${m[j]} K${m[i]}${m[j]}vK) # 2+2, 3+1
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for ((k=4; k>=0; k--)); do
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tb345+=(K${m[i]}${m[j]}vK${m[k]}) # 3+2
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((k<=i)) || continue
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for ((l=k; l>=0; l--)); do
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((k<i || l<=j)) && tb6+=(K${m[i]}${m[j]}vK${m[k]}${m[l]}) # 3+3
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done
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((k<=j)) || continue
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tb345+=(K${m[i]}${m[j]}${m[k]}vK) # 4+1
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for ((l=4; l>=0; l--)); do
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tb6+=(K${m[i]}${m[j]}${m[k]}vK${m[l]}) # 4+2
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((l<=k)) && tb6+=(K${m[i]}${m[j]}${m[k]}${m[l]}vK) # 5+1
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done
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done
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done
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done
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tb345=("${tb345[@]/#/mirror+http://tablebase.sesse.net/syzygy/3-4-5/}")
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SRC_URI="${tb345[@]/%/.rtbw} ${tb345[@]/%/.rtbz}
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6-pieces? ( ${tb6[@]/%/.rtbw} ${tb6[@]/%/.rtbz} )"
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unset i j k l m tb345 tb6
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LICENSE="public-domain" # machine-generated tables
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SLOT="0"
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KEYWORDS="amd64 ~arm64 x86"
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IUSE="6-pieces"
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# fetch restriction only for the 6-pieces tables, by selective
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# URI restriction ("mirror+" in SRC_URI)
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RESTRICT="fetch"
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RDEPEND="!${CATEGORY}/${PN}:nofetch"
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S="${WORKDIR}"
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pkg_nofetch() {
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einfo "Due to their large size, fetching the Syzygy Endgame Tablebases via"
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einfo "BitTorrent is recommended: https://oics.olympuschess.com/tracker/"
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einfo "After downloading, place all K*.rtbw and K*.rtbz files in your"
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einfo "DISTDIR directory."
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einfo "(For the tablebases with up to 6 pieces, there should be"
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einfo "$(set -- ${A}; echo $#) files in total.)"
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}
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pkg_pretend() {
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CHECKREQS_DISK_USR="$(usex 6-pieces 151G 939M)"
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CHECKREQS_DISK_BUILD="${CHECKREQS_DISK_USR}"
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check-reqs_pkg_pretend
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}
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pkg_setup() {
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CHECKREQS_DISK_USR="$(usex 6-pieces 151G 939M)"
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CHECKREQS_DISK_BUILD="${CHECKREQS_DISK_USR}"
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check-reqs_pkg_setup
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}
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src_unpack() { :; }
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src_install() {
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local f
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insinto /usr/share/${PN}
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for f in ${A}; do
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[[ ${f} == *.rtb[wz] ]] && echo "${DISTDIR}"/${f}
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done | xargs doins
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}
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