ports: Add a little script to list installed ports

ports/list-ports.sh

@@ -0,0 +1,55 @@
+#!/usr/bin/env bash
+
+set -e
+
+cd $(dirname $0)/..
+
+source tools/env.sh
+
+cd ports
+
+unset_vars()
+{
+    unset pkgname
+    unset pkgver
+    unset pkgurl
+    unset pkgmode
+    unset setupdir
+    unset builddir
+    unset installdir
+    unset srcdir
+    unset port_unpack
+    unset port_patch
+    unset port_configure
+    unset port_build
+    unset port_install
+    unset port_uninstall
+}
+
+if ! [ -f ./ports.list ]
+then
+    echo "No ports installed."
+fi
+
+export HAVE_PORTS=0
+
+install_port()
+{
+    HAVE_PORTS=1
+    unset_vars
+    cd $LUNA_ROOT/ports
+    export DESTDIR=${DESTDIR:-"$LUNA_ROOT/initrd"}
+    export portdir=$PWD/$1
+    export workdir=$portdir/workdir
+    source $portdir/package.sh
+    echo "$pkgname $pkgver"
+}
+
+while read package; do
+   install_port $package
+done < ./ports.list
+
+if [ "$HAVE_PORTS" = "0" ]
+then
+    echo "No ports installed."
+fi