Added three new helpers to be used by packages requiring GTK+ and

by pango itself.

To be able to run those helpers once the package has been stowned
properly, another variable available for templates has been added:
"postinstall_helpers".

This accepts a list of template helper names, e.g:

postinstall_helpers="gtk-update-gdkpixbufloaders.sh gtk-update-immodules.sh".

Also rather than setting extract_cmd itself in pkgfs.sh when
extract_sufx=".zip", set it in the helper itself.

--HG--
extra : convert_revision : 0f55c35f201daf6ff2e6d18cc808d0a34d8f4ddf

helper-templates/gtk-update-gdkpixbufloaders.sh

@@ -0,0 +1,17 @@
+#
+# This helper updates GTK's gdk-pixbug.loaders modules file every time
+# a template requests this process.
+#
+gtk_version="2.0"
+gdk_pixbuf_query_cmd=$PKGFS_MASTERDIR/bin/gdk-pixbuf-query-loaders
+gdk_pixbuf_db=$PKGFS_SYSCONFDIR/gtk-$gtk_version/gdk-pixbuf.loaders
+
+if [ -x $gdk_pixbuf_query_cmd -a -w $gdk_pixbuf_db ]; then
+	$gdk_pixbuf_query_cmd > $gdk_pixbuf_db
+	[ "$?" -eq 0 ] && \
+		echo "=> Updated GTK+ $(basename $gdk_pixbuf_db) modules file."
+fi
+
+unset gtk_version
+unset gdk_pixbuf_query_cmd
+unset gdk_pixbuf_dbfile

helper-templates/gtk-update-immodules.sh

@@ -0,0 +1,17 @@
+#
+# This helper updates GTK's gtk.immodules modules file every time
+# a template requests this process.
+#
+gtk_version="2.0"
+gtk_query_immodules_cmd=$PKGFS_MASTERDIR/bin/gtk-query-immodules-$gtk_version
+gtk_immodules_db=$PKGFS_SYSCONFDIR/gtk-$gtk_version/gtk.immodules
+
+if [ -x $gtk_query_immodules_cmd -a -w $gtk_immodules_db ]; then
+	$gtk_query_immodules_cmd > $gtk_immodules_db
+	[ "$?" -eq 0 ] && \
+		echo "=> Updated GTK+ $(basename $gtk_immodules_db) modules file."
+fi
+
+unset gtk_version
+unset gtk_query_immodules_cmd
+unset gtk_immodules_db

helper-templates/pango-update-modules.sh

@@ -0,0 +1,16 @@
+#
+# This helper updates the pango modules file when the pango package
+# has been properly installed and stowned.
+#
+
+pango_query_modules_cmd=$PKGFS_MASTERDIR/bin/pango-querymodules
+pango_query_modules_db=$PKGFS_SYSCONFDIR/pango/pango.modules
+
+if [ -x $pango_query_modules_cmd -a -w $pango_query_modules_db ]; then
+	$pango_query_modules_cmd > $pango_query_modules_db
+	[ "$?" -eq 0 ] && \
+		echo "=> Updated Pango's $pango_query_modules_db modules file."
+fi
+
+unset pango_query_modules_cmd
+unset pango_query_modules_db

helper-templates/unzip-extraction.sh

@@ -1,7 +1,7 @@
 #
 # This helper is used in templates using extract_sufx=".zip".
 # This checks if unzip is installed and installs it if it's not
-# and sets the unzip_cmd variable appropiately.
+# and sets the unzip_cmd/extract_cmd variables appropiately.
 #
 unzip_version="5.52"
 
@@ -23,4 +23,6 @@ fi
 
 unset save_pkgname
 unset unzip_version
+
 unzip_cmd=$PKGFS_MASTERDIR/bin/unzip
+extract_cmd="$unzip_cmd -x $dfile -d $PKGFS_BUILDDIR"