SYS_CATALOG='etc/xml/catalog'

# arg 1:  the new package version
pre_install() {
	/bin/true
}

# arg 1:  the new package version
post_install() {
	add_catalog "${1%-*}"
}

# arg 1:  the new package version
# arg 2:  the old package version
pre_upgrade() {
	remove_catalog "${2%-*}"

	# docbook-xml no longer contains etc/xml/catalog,
	# backup the catalog to restore it in post_upgrade().
	if [ $(vercmp 4.5-1 $2) -gt 0 ]; then
		cp etc/xml/catalog{,.backup}
	fi
}

# arg 1:  the new package version
# arg 2:  the old package version
post_upgrade() {
	# docbook-xml no longer contains etc/xml/catalog, 
	# restore the backup from pre_upgrade().
	if [ $(vercmp 4.5-1 $2) -gt 0 ]; then
		mv etc/xml/catalog{.backup,}
	fi

	add_catalog "${1%-*}"
}

# arg 1:  the old package version
pre_remove() {
	remove_catalog "${1%-*}"
}

# arg 1:  the old package version
post_remove() {
	/bin/true
}


add_catalog() {
	local CATALOG="etc/xml/docbook-xml-$1"

	if [ ! -e etc/xml/catalog ]; then
    	xmlcatalog --noout --create $SYS_CATALOG
	fi

	xmlcatalog --noout --add "delegatePublic" \
		"-//OASIS//ENTITIES DocBook XML" \
		"file:///$CATALOG" \
		$SYS_CATALOG
	xmlcatalog --noout --add "delegatePublic" \
		"-//OASIS//DTD DocBook XML" \
		"file:///$CATALOG" \
		$SYS_CATALOG
	xmlcatalog --noout --add "delegateSystem" \
		"http://www.oasis-open.org/docbook/" \
		"file:///$CATALOG" \
		$SYS_CATALOG
	xmlcatalog --noout --add "delegateURI" \
		"http://www.oasis-open.org/docbook/" \
		"file:///$CATALOG" \
		$SYS_CATALOG

	# Add support for previous versions.
	local DTDVERSION
	for DTDVERSION in 4.1.2 4.2 4.3 4.4; do
		xmlcatalog --noout --add "delegateSystem" \
			"http://www.oasis-open.org/docbook/xml/$DTDVERSION/" \
			"file:///$CATALOG" \
			$SYS_CATALOG
		xmlcatalog --noout --add "delegateURI" \
			"http://www.oasis-open.org/docbook/xml/$DTDVERSION/" \
			"file:///$CATALOG" \
			$SYS_CATALOG
	done
}

remove_catalog() {
	xmlcatalog --noout --del \
		"-//OASIS//ENTITIES DocBook XML" \
		$SYS_CATALOG
	xmlcatalog --noout --del \
		"-//OASIS//DTD DocBook XML" \
		$SYS_CATALOG
	xmlcatalog --noout --del \
		"http://www.oasis-open.org/docbook/" \
		$SYS_CATALOG

	local DTDVERSION
	for DTDVERSION in 4.1.2 4.2 4.3 4.4; do
		xmlcatalog --noout --del \
			"http://www.oasis-open.org/docbook/xml/$DTDVERSION/" \
			$SYS_CATALOG
	done
}

op=$1
shift
$op "$@"

# vim:set syntax=sh ts=4 sw=4 noet: