From 61e594d1508716d9351f3dd355edef6e86e980d9 Mon Sep 17 00:00:00 2001
From: Kazuki Yamaguchi <k@rhe.jp>
Date: Tue, 11 Aug 2015 19:42:34 +0900
Subject: binary_string: add String#each_byteslice

---
 lib/plum/binary_string.rb | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

(limited to 'lib')

diff --git a/lib/plum/binary_string.rb b/lib/plum/binary_string.rb
index 2d3ed76..72b38b1 100644
--- a/lib/plum/binary_string.rb
+++ b/lib/plum/binary_string.rb
@@ -54,6 +54,21 @@ module Plum
         force_encoding(Encoding::BINARY)
         slice!(0, count)
       end
+
+      def each_byteslice(n, &blk)
+        if block_given?
+          pos = 0
+          while pos < self.bytesize
+            yield byteslice(pos, n)
+            pos += n
+          end
+        else
+          Enumerator.new do |y|
+            each_byteslice(n) {|ss| y << ss }
+          end
+          # I want to write `enum_for(__method__, n)`!
+        end
+      end
     end
   end
 end
-- 
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