dev-util/weka: update EAPI 6 -> 8

Signed-off-by: Volkmar W. Pogatzki <gentoo@pogatzki.net>
Signed-off-by: Amy Liffey <amynka@gentoo.org>
Closes: https://github.com/gentoo/gentoo/pull/25369

dev-util/weka/weka-3.8.0-r1.ebuild

@@ -0,0 +1,73 @@
+# Copyright 1999-2022 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+JAVA_PKG_IUSE="source"
+
+inherit java-pkg-2 java-ant-2
+
+DESCRIPTION="A Java data mining package"
+HOMEPAGE="https://www.cs.waikato.ac.nz/ml/weka/"
+SRC_URI="mirror://sourceforge/project/weka/weka-3-8/${PV}/weka-${PV//./-}.zip"
+
+SLOT="0"
+LICENSE="GPL-2"
+KEYWORDS="~amd64 ~x86"
+
+DEPEND="virtual/jdk:1.8
+	dev-java/javacup:0"
+RDEPEND="virtual/jre:1.8
+	dev-java/javacup:0"
+BDEPEND="app-arch/unzip"
+
+S="${WORKDIR}/${P//./-}"
+
+PATCHES=("${FILESDIR}"/${P}-build.xml.patch)
+
+EANT_BUILD_TARGET="exejar"
+EANT_DOC_TARGET="docs"
+JAVA_ANT_IGNORE_SYSTEM_CLASSES="true"
+
+weka_get_max_memory() {
+	if use amd64; then
+		echo 512m
+	else
+		echo 256m
+	fi
+}
+
+src_prepare() {
+	unzip -qq "${PN}-src.jar" -d . || die "Failed to unpack the source"
+	rm -v weka.jar || die
+	rm -rf doc || die
+	java-pkg_jar-from --into lib javacup
+
+	sed -i -e "s/256m/$(weka_get_max_memory)/g" build.xml || die
+	default
+}
+
+src_install() {
+	java-pkg_dojar dist/${PN}.jar
+	java-pkg_dolauncher weka --main "${PN}.gui.GUIChooser"
+
+	# Really need a virtual to list all available drivers and pull the ones
+	# instaled
+	java-pkg_register-optional-dependency hsqldb,jdbc-mysql,mckoi-1
+
+	use source && java-pkg_dosrc src/main/java/weka/
+
+	dodoc README
+
+	insinto /usr/share/${PN}/data/
+	doins data/*
+}
+
+pkg_postinst() {
+	elog "If you are upgrading from weka 3.7 to later"
+	elog "and your package manager does not start please delete"
+	elog "file installedPackageCache.ser from packages folder"
+	elog "in wekafiles located in your user home."
+	elog
+	elog "rm \${HOME}/wekafiles/packages/installedPackageCache.ser"
+}