_datadir=/usr/share
_rootcatalog=/etc/xml/catalog

post_install() {
  if [[ -w $_rootcatalog ]]; then
    for v in 5.1; do
      xmlcatalog --noout --add "delegatePublic" \
        "-//OASIS//DTD DocBook XML ${v}//EN" \
        "file://${_datadir}/xml/docbook5/schema/dtd/${v}/catalog.xml" \
        ${_rootcatalog}
      xmlcatalog --noout --add "delegateSystem" \
        "http://docbook.org/xml/${v}/dtd/" \
        "file://${_datadir}/xml/docbook5/schema/dtd/${v}/catalog.xml" \
        ${_rootcatalog}
      xmlcatalog --noout --add "delegateURI" \
        "http://docbook.org/xml/${v}/dtd/" \
        "file://${_datadir}/xml/docbook5/schema/dtd/${v}/catalog.xml" \
        ${_rootcatalog}
      xmlcatalog --noout --add "delegateURI" \
        "http://docbook.org/xml/${v}/rng/"  \
        "file://${_datadir}/xml/docbook5/schema/rng/${v}/catalog.xml" \
        ${_rootcatalog}
      xmlcatalog --noout --add "delegateURI" \
        "http://docbook.org/xml/${v}/sch/"  \
        "file://${_datadir}/xml/docbook5/schema/sch/${v}/catalog.xml" \
        ${_rootcatalog}
      xmlcatalog --noout --add "delegateURI" \
        "http://docbook.org/xml/${v}/xsd/"  \
        "file://${_datadir}/xml/docbook5/schema/xsd/${v}/catalog.xml" \
        ${_rootcatalog}
    done
  fi
}

post_remove() {
  if [[ -w $_rootcatalog ]]; then
    for v in 5.1; do
       xmlcatalog --noout --del \
       "file://${_datadir}/xml/docbook5/schema/dtd/${v}/catalog.xml" \
       ${_rootcatalog}
       xmlcatalog --noout --del \
       "file://${_datadir}/xml/docbook5/schema/rng/${v}/catalog.xml" \
       ${_rootcatalog}
       xmlcatalog --noout --del \
       "file://${_datadir}/xml/docbook5/schema/sch/${v}/catalog.xml" \
       ${_rootcatalog}
       xmlcatalog --noout --del \
       "file://${_datadir}/xml/docbook5/schema/xsd/${v}/catalog.xml" \
       ${_rootcatalog}
     done
  fi
}