sde-config: Introduced get_field() function to extract the value of a "^#Foo: ..." line

lib/sde-config/functions.in

@@ -2,7 +2,7 @@
 # This copyright note is auto-generated by ./scripts/Create-CopyPatch.
 #
 # Filename: lib/sde-config/functions.in
-# Copyright (C) 2006 - 2008 The OpenSDE Project
+# Copyright (C) 2006 - 2011 The OpenSDE Project
 # Copyright (C) 2004 - 2006 The T2 SDE Project
 # Copyright (C) 1998 - 2003 Clifford Wolf
 #
@@ -16,6 +16,14 @@
 
 . lib/core-functions.in
 
+# extract first value of a "^#Foo: ..." line from a set of files
+#
+get_field() {
+	local label="$1"; shift
+	sed -n -e "s/^#[ \t]*$label:[ \t]*\(.*\)/\1/p" "$@" 2> /dev/null |
+		head -n1 | sed -e 's,[ \t]*$,,'
+}
+
 # Function to cache config.in and subconfig.in file lists
 #
 create_configin_list() {