rebuild all serialization to use string concatenation instead of nokogiri.

1 files changed, 8 insertions, 1 deletions

diff --git a/lib/axlsx/stylesheet/cell_style.rb b/lib/axlsx/stylesheet/cell_style.rb
index 0a40ab13..22694ae1 100644
--- a/lib/axlsx/stylesheet/cell_style.rb
+++ b/lib/axlsx/stylesheet/cell_style.rb
@@ -7,7 +7,7 @@ module Axlsx
     # The name of this cell style
     # @return [String]
     attr_reader :name
-    
+
     # The formatting record id this named style utilizes
     # @return [Integer]
     # @see Axlsx::Xf
@@ -55,6 +55,13 @@ module Axlsx
     # @see customBuiltin
     def customBuiltin=(v) Axlsx::validate_boolean v; @customBuiltin = v end
 
+
+    def to_xml_string(str = '')
+      str << '<cellStyle '
+      str << instance_values.map { |key, value| '' << key.to_s << '="' << value.to_s << '"' }.join(' ')
+      str << '/>'
+    end
+
     # Serializes the cell style
     # @param [Nokogiri::XML::Builder] xml The document builder instance this objects xml will be added to.
     # @return [String]