1 files changed, 6 insertions, 4 deletions
diff --git a/lib/oxidized/source/csv.rb b/lib/oxidized/source/csv.rb
index a0ce848..d498e0b 100644
--- a/lib/oxidized/source/csv.rb
+++ b/lib/oxidized/source/csv.rb
@@ -20,18 +20,20 @@ class CSV < Source
     nodes = []
     open(File.expand_path @cfg.file).each_line do |line|
       next if line.match(/^\s*#/)
-      data  = line.chomp.split @cfg.delimiter
+      data  = line.chomp.split(@cfg.delimiter, -1)
       next if data.empty?
       # map node parameters
       keys = {}
       @cfg.map.each do |key, position|
-        keys[key.to_sym] = data[position]
+        keys[key.to_sym] = node_var_interpolate data[position]
       end
       keys[:model] = map_model keys[:model] if keys.key? :model
 
-      # map node specific vars, empty value is considered as nil
+      # map node specific vars
       vars = {}
-      @cfg.vars_map.each { |key, position| vars[key.to_sym] = data[position].to_s.empty? ? nil : data[position] }
+      @cfg.vars_map.each do |key, position|
+        vars[key.to_sym] = node_var_interpolate data[position]
+      end
       keys[:vars] = vars unless vars.empty?
 
       nodes << keys