* rebuild sgml-common as zstd package

sgml-common/PKGBUILD

@@ -5,7 +5,7 @@
 
 pkgname='sgml-common'
 pkgver=0.6.3
-pkgrel=7
+pkgrel=8
 pkgdesc='Tools for maintaining centralized SGML catalogs.'
 arch=('any')
 url='https://www.docbook.org/xml/'

sgml-common/sgml-common.install

@@ -0,0 +1,55 @@
+# 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%-*}"
+}
+
+# arg 1:  the new package version
+# arg 2:  the old package version
+post_upgrade() {
+	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() {
+	install-catalog --add /etc/sgml/sgml-ent.cat \
+		/usr/share/sgml/sgml-iso-entities-8879.1986/catalog > /dev/null 2>&1
+
+	install-catalog --add /etc/sgml/sgml-docbook.cat \
+		/etc/sgml/sgml-ent.cat > /dev/null 2>&1
+}
+
+remove_catalog() {
+	install-catalog --remove /etc/sgml/sgml-ent.cat \
+		/usr/share/sgml/sgml-iso-entities-8879.1986/catalog > /dev/null 2>&1
+
+	install-catalog --remove /etc/sgml/sgml-docbook.cat \
+		/etc/sgml/sgml-ent.cat > /dev/null 2>&1
+}
+
+op=$1
+shift
+$op "$@"
+
+# vim:set syntax=sh ts=4 sw=4 noet:
+