1 files changed, 42 insertions, 0 deletions
diff --git a/functions/packagelists.sh b/functions/packagelists.sh
new file mode 100755
index 000000000..f25b5fbca
--- /dev/null
+++ b/functions/packagelists.sh
@@ -0,0 +1,42 @@
+#!/bin/sh
+
+# packagelists.sh - expands package list includes
+# Copyright (C) 2006-2007 Daniel Baumann <daniel@debian.org>
+#
+# live-helper comes with ABSOLUTELY NO WARRANTY; for details see COPYING.
+# This is free software, and you are welcome to redistribute it
+# under certain conditions; see COPYING for details.
+
+set -e
+
+Expand_packagelist ()
+{
+	# ${1} List name
+	# ${2} Default path to search
+	# ${3} Fallback path to search (optional)
+
+	# Does list exist in default path?
+	if [ -e "${2}/${1}" ];
+	then
+		Expand_packagelist_file "${2}/${1}" "${@}"
+	else
+		# If list exists in fallback, include it.
+		if [ -n "${3}" ] && [ -e "${3}/${1}" ]
+		then
+			Expand_packagelist_file "${3}/${1}" "${@}"
+		fi
+	fi
+}
+
+Expand_packagelist_file ()
+{
+	local FILE="${1}"
+	shift
+	shift
+
+	for INCLUDE in `sed -ne 's/^#<include> \(.*\)/\1/gp' "${FILE}"`;
+	do
+		Expand_packagelist "${INCLUDE}" "${@}"
+	done
+	sed -ne 's/^\([^#].*\)/\1\n/gp' "${FILE}"
+}