1 files changed, 98 insertions, 0 deletions
diff --git a/functions/packagelists.sh b/functions/packagelists.sh
new file mode 100755
index 000000000..94f016fbf
--- /dev/null
+++ b/functions/packagelists.sh
@@ -0,0 +1,98 @@
+#!/bin/sh
+
+## live-build(7) - System Build Scripts
+## Copyright (C) 2006-2010 Daniel Baumann <daniel@debian.org>
+##
+## live-build 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.
+
+
+Expand_packagelist ()
+{
+	_LB_EXPAND_QUEUE="$(basename "${1}")"
+
+	shift
+
+	while [ -n "${_LB_EXPAND_QUEUE}" ]
+	do
+		_LB_LIST_NAME="$(echo ${_LB_EXPAND_QUEUE} | cut -d" " -f1)"
+		_LB_EXPAND_QUEUE="$(echo ${_LB_EXPAND_QUEUE} | cut -s -d" " -f2-)"
+		_LB_LIST_LOCATION=""
+		_LB_NESTED=0
+		_LB_ENABLED=1
+
+		for _LB_SEARCH_PATH in ${@} config/lists "${LB_BASE:-/usr/share/live/build}/lists"
+		do
+			if [ -e "${_LB_SEARCH_PATH}/${_LB_LIST_NAME}" ]
+			then
+				_LB_LIST_LOCATION="${_LB_SEARCH_PATH}/${_LB_LIST_NAME}"
+				break
+			fi
+		done
+
+		if [ -z "${_LB_LIST_LOCATION}" ]
+		then
+			echo "W: Unknown package list '${_LB_LIST_NAME}'" >&2
+			continue
+		fi
+
+		while read _LB_LINE
+		do
+			case "${_LB_LINE}" in
+				\#if\ *)
+					if [ ${_LB_NESTED} -eq 1 ]
+					then
+						echo "E: Nesting conditionals is not supported" >&2
+						exit 1
+					fi
+					_LB_NESTED=1
+
+					_LB_NEEDLE="$(echo "${_LB_LINE}" | cut -d' ' -f3-)"
+					_LB_HAYSTACK="$(eval "echo \$LB_$(echo "${_LB_LINE}" | cut -d' ' -f2)")"
+
+					_LB_ENABLED=0
+					for _LB_NEEDLE_PART in ${_LB_NEEDLE}
+					do
+						for _LB_HAYSTACK_PART in ${_LB_HAYSTACK}
+						do
+							if [ "${_LB_NEEDLE_PART}" = "${_LB_HAYSTACK_PART}" ]
+							then
+								_LB_ENABLED=1
+							fi
+						done
+					done
+					;;
+
+				\#endif*)
+					_LB_NESTED=0
+					_LB_ENABLED=1
+					;;
+
+				\#*)
+					if [ ${_LB_ENABLED} -ne 1 ]
+					then
+						continue
+					fi
+
+					# Find includes
+					_LB_INCLUDES="$(echo "${_LB_LINE}" | sed -n \
+						-e 's|^#<include> \([^ ]*\)|\1|gp' \
+						-e 's|^#include <\([^ ]*\)>|\1|gp')"
+
+					# Add to queue
+					_LB_EXPAND_QUEUE="$(echo ${_LB_EXPAND_QUEUE} ${_LB_INCLUDES} |
+						sed -e 's|[ ]*$||' -e 's|^[ ]*||')"
+					;;
+
+				*)
+					if [ ${_LB_ENABLED} -eq 1 ]
+					then
+						echo "${_LB_LINE}"
+					fi
+					;;
+
+			esac
+		done < "${_LB_LIST_LOCATION}"
+	done
+}