FAST ENOUGH?

                          user     system      total        real
axlsx_noautowidth         1.560000   0.030000   1.590000 (  1.717595)
axlsx                     4.360000   0.140000   4.500000 (  5.748329)
axlsx_shared              6.880000   0.160000   7.040000 (  9.325648)
axlsx_stream              4.320000   0.120000   4.440000 (  5.642124)
csv                       0.240000   0.010000   0.250000 (  0.301004)

2 files changed, 15 insertions, 17 deletions

diff --git a/lib/axlsx/workbook/shared_strings_table.rb b/lib/axlsx/workbook/shared_strings_table.rb
index 2fffdd6b..5ebfd87f 100644
--- a/lib/axlsx/workbook/shared_strings_table.rb
+++ b/lib/axlsx/workbook/shared_strings_table.rb
@@ -36,7 +36,7 @@ module Axlsx
     end
 
     def to_xml_string
-      str = "<sst xmlns=\"%s\" count='%s' uniqueCount='%s'>%s</sst>" % [XML_NS, count, unique_count, @unique_cells.map {|cell| cell.run_xml_string}.join]
+      str = "<sst xmlns=\"%s\" count='%s' uniqueCount='%s'>%s</sst>" % [XML_NS, count, unique_count, @unique_cells.map {|cell| cell[:data]}.join]
     end
 
     # Generate the xml document for the Shared Strings Table
@@ -62,10 +62,13 @@ module Axlsx
     # @return [Array] unique cells
     def resolve(cells)
       cells.each do |cell|
-        index = @unique_cells.index { |item| item.shareable(cell) }
+        cell_hash = cell.shareable_hash
+        index = @unique_cells.index do |item|
+          item[:hash] == cell_hash
+        end
         if index == nil
           cell.send :ssti=, @unique_cells.size
-          @unique_cells << cell
+          @unique_cells << {:hash => cell_hash, :data => '<si>'<< cell.run_xml_string << '</si>'}
         else
           cell.send :ssti=, index
         end
diff --git a/lib/axlsx/workbook/worksheet/cell.rb b/lib/axlsx/workbook/worksheet/cell.rb
index 59ce0838..a3ec046a 100644
--- a/lib/axlsx/workbook/worksheet/cell.rb
+++ b/lib/axlsx/workbook/worksheet/cell.rb
@@ -224,16 +224,10 @@ module Axlsx
 
     # equality comparison to test value, type and inline style attributes
     # this is how we work out if the cell needs to be added or already exists in the shared strings table
-    def shareable(v)
-
-      #using reject becase 1.8.7 select returns an array...
-      v_hash = v.instance_values.reject { |key, val| !INLINE_STYLES.include?(key) }
+    def shareable_hash
       self_hash = self.instance_values.reject { |key, val| !INLINE_STYLES.include?(key) }
-      # required as color is an object, and the comparison will fail even though both use the same color.
-      v_hash['color'] = v_hash['color'].instance_values if v_hash['color']
       self_hash['color'] = self_hash['color'].instance_values if self_hash['color']
-
-      v_hash == self_hash
+      self_hash
     end
 
     # @return [Integer] The index of the cell in the containing row.
@@ -284,7 +278,8 @@ module Axlsx
     def run_xml_string
       str = ""
       if is_text_run?
-        keys = self.instance_values.reject{|key, value| value == nil }.keys & INLINE_STYLES
+        data = self.instance_values.reject{|key, value| value == nil }
+        keys = data.keys & INLINE_STYLES
         keys.delete ['value', 'type']
         str << "<r><rPr>"
         keys.each do |key|
@@ -292,9 +287,9 @@ module Axlsx
           when 'font_name'
             str << "<rFont val='"<< @font_name << "'/>"
           when 'color'
-            str << self.instance_values[key].to_xml_string
+            str << data[key].to_xml_string
           else
-            "<" << key << "val='" << self.instance_values[key] << "'/>"
+            "<" << key.to_s << " val='" << data[key].to_s << "'/>"
           end
         end
         str << "</rPr>" << "<t>" << value.to_s << "</t></r>"
@@ -354,11 +349,11 @@ module Axlsx
         end
       when :date
         # TODO: See if this is subject to the same restriction as Time below
-        '<c r="' << r << '" s="' << @style.to_s << '"><v>' << DateTimeConverter::date_to_serial(@value) << '</v></c>'
+        '<c r="' << r << '" s="' << @style.to_s << '"><v>' << DateTimeConverter::date_to_serial(@value).to_s << '</v></c>'
       when :time
-        '<c r="' << r << '" s="' << @style.to_s << '"><v>' << DateTimeConverter::time_to_serial(@value) << '</v></c>'
+        '<c r="' << r << '" s="' << @style.to_s << '"><v>' << DateTimeConverter::time_to_serial(@value).to_s << '</v></c>'
       when :boolean
-        '<c r="' << r << '" t="b" s="' << @style.to_s << '"><v>' << ssti << '</v></c>'
+        '<c r="' << r << '" t="b" s="' << @style.to_s << '"><v>' << @value.to_s << '</v></c>'
       else
         '<c r="' << r << '" s="' << @style.to_s << '"><v>' << @value.to_s << '</v></c>'
       end