From 9c27e8f59b9e4e7c2769917ce0614153c1c7501f Mon Sep 17 00:00:00 2001
From: "Michael B. Klein" <mbklein@gmail.com>
Date: Mon, 23 Aug 2010 16:20:48 -0700
Subject: [PATCH] Added String#chunk_and_group to make adding text to CDEs more
 straightforward

---
 lib/edi/mapper.rb | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/lib/edi/mapper.rb b/lib/edi/mapper.rb
index b3b831f84..387eaa541 100644
--- a/lib/edi/mapper.rb
+++ b/lib/edi/mapper.rb
@@ -15,6 +15,18 @@ class String
     self.scan(re).flatten.reject { |chunk| chunk.nil? or chunk.empty? }
   end
   
+  def chunk_and_group(chunk_len, group_len)
+    chunks = self.chunk(chunk_len)
+    groups = [[]]
+    chunks.each { |chunk|
+      if groups.last.length == group_len
+        groups << []
+      end
+      groups.last << chunk
+    }
+    groups
+  end
+  
 end
 
 module EDI::E
-- 
2.11.0