--- /dev/null
+# Copyright 1999-2011 Gentoo Foundation
+# Distributed under the terms of the GNU General Public License v2
+# $Header: $
+
+EAPI=4
+
+inherit sgml-catalog
+
+MY_PV=${PV/_beta/b}
+MY_PV=${PV/_rc/CR}
+
+DESCRIPTION="Docbook DTD for MathML"
+HOMEPAGE="http://www.docbook.org/xml/mathml/"
+SRC_URI="http://www.docbook.org/xml/mathml/${MY_PV}/dbmathml.dtd -> dbmathml-${PV}.dtd"
+
+LICENSE="GPL-2"
+SLOT="0"
+KEYWORDS="~amd64"
+IUSE=""
+
+DEPEND="app-text/mathml-xml-dtd"
+RDEPEND="dev-libs/libxml2
+ app-text/docbook-xml-dtd:4.3
+ >=app-text/build-docbook-catalog-1.6
+ ${DEPEND}"
+
+S=${WORKDIR}
+
+sgml-catalog_cat_include "/etc/sgml/mathml-docbook-${PV}.cat" \
+ "/usr/share/sgml/docbook/${P#docbook-}/docbook.cat"
+
+src_unpack() {
+ cp "${DISTDIR}"/dbmathml-${PV}.dtd "${S}" || die
+}
+
+src_prepare() {
+ mv dbmathml-${PV}.dtd dbmathml.dtd || die
+ cat <<- EOF > docbook.cat || die
+ PUBLIC "-//OASIS//DTD DocBook MathML Module V${MY_PV}//EN" "dbmathml.dtd"
+ SYSTEM "http://www.oasis-open.org/docbook/xml/mathml/1.1CR1/dbmathml.dtd" "dbmathml.dtd"
+ EOF
+}
+
+src_install() {
+ insinto /usr/share/sgml/docbook/${P#docbook-}
+ doins *.cat *.dtd || die
+}
+
+pkg_postinst() {
+ build-docbook-catalog || die
+ sgml-catalog_pkg_postinst || die
+
+ xmlcatalog --noout \
+ --add public "-//OASIS//DTD DocBook MathML Module V${MV_PV}//EN" "file:///usr/share/sgml/docbook/${P#docbook-}/dbmathml.dtd" \
+ --add rewriteSystem "http://www.oasis-open.org/docbook/xml/mathml/1.1CR1" "file:///usr/share/sgml/docbook/${P#docbook-}" \
+ "${EPREFIX}"/etc/xml/docbook \
+ || die
+}
+
+pkg_postrm() {
+ build-docbook-catalog || die
+ sgml-catalog_pkg_postrm || die
+
+ xmlcatalog --noout \
+ --del "-//OASIS//DTD DocBook MathML Module V${MV_PV}//EN" \
+ --del "http://www.oasis-open.org/docbook/xml/mathml/1.1CR1/dbmathml.dtd" \
+ "${EPREFIX}"/etc/xml/docbook \
+ || die
+}