Added getbyte as a core_ext to Ruby < 1.9

Signed-off-by: José Valim <jose.valim@gmail.com>

2 files changed, 12 insertions, 0 deletions

diff --git a/activesupport/lib/active_support/core_ext/string/conversions.rb b/activesupport/lib/active_support/core_ext/string/conversions.rb
index 6a243fe982..af277f9995 100644
--- a/activesupport/lib/active_support/core_ext/string/conversions.rb
+++ b/activesupport/lib/active_support/core_ext/string/conversions.rb
@@ -28,6 +28,10 @@ class String
     self[0]
   end unless method_defined?(:ord)
 
+  def getbyte(index)
+    self[index]
+  end if RUBY_VERSION < '1.9'
+
   # Form can be either :utc (default) or :local.
   def to_time(form = :utc)
     return nil if self.blank?
diff --git a/activesupport/test/core_ext/string_ext_test.rb b/activesupport/test/core_ext/string_ext_test.rb
index d9702dd9ff..affa1b5e18 100644
--- a/activesupport/test/core_ext/string_ext_test.rb
+++ b/activesupport/test/core_ext/string_ext_test.rb
@@ -110,6 +110,14 @@ class StringInflectionsTest < Test::Unit::TestCase
     assert_equal 97, 'abc'.ord
   end
 
+  if RUBY_VERSION < '1.9'
+    def test_getbyte
+      assert_equal 97, 'a'.getbyte(0)
+      assert_equal 99, 'abc'.getbyte(2)
+      assert_nil   'abc'.getbyte(3)
+    end
+  end
+
   def test_string_to_time
     assert_equal Time.utc(2005, 2, 27, 23, 50), "2005-02-27 23:50".to_time
     assert_equal Time.local(2005, 2, 27, 23, 50), "2005-02-27 23:50".to_time(:local)