to_markdown for markdown tables

lib/text-table/table.rb

@@ -172,6 +172,19 @@ def to_s
       rendered_rows.join
     end
 
+    # Renders a markdown styled table
+    def to_markdown
+      b = @boundary_intersection
+      @boundary_intersection = '|'
+
+      rendered_rows = [separator] + text_table_rows.map(&:to_s)
+      rendered_rows.unshift [text_table_head.to_s] if head
+
+      @boundary_intersection = b
+
+      rendered_rows.join.gsub('|-', '| ').gsub('-|', ' |')
+    end
+
     #  Aligns the cells and the footer of a column.
     #
     #    table = Text::Table.new :rows => [%w(a bb), %w(aa bbb), %w(aaa b)]

spec/integration/boundaries_spec.rb

@@ -110,4 +110,14 @@
       +----------+----------+----------+----------+
     }) }
   end
+
+  describe 'markdown style table' do
+    subject { table.to_markdown }
+    it { should == deindent(%q{
+      |  a   |  bb  | ccc  | dddd |
+      | ---- | ---- | ---- | ---- |
+      | aa   | bbb  | cccc | d    |
+      | aaa  | bbbb | c    | dd   |
+    }) }
+  end
 end