add tag v1_8_5_54

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/tags/v1_8_5_54@12952 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 34 insertions, 0 deletions

diff --git a/ruby_1_8_5/lib/rexml/encodings/UTF-16.rb b/ruby_1_8_5/lib/rexml/encodings/UTF-16.rb
new file mode 100644
index 0000000000..972169755e
--- /dev/null
+++ b/ruby_1_8_5/lib/rexml/encodings/UTF-16.rb
@@ -0,0 +1,34 @@
+module REXML
+  module Encoding
+    def encode_utf16 content
+      array_utf8 = content.unpack("U*")
+      array_enc = []
+      array_utf8.each do |num|
+        if ((num>>16) > 0)
+          array_enc << 0
+          array_enc << ??
+        else
+          array_enc << (num >> 8)
+          array_enc << (num & 0xFF)
+        end
+      end
+      array_enc.pack('C*')
+    end
+
+    def decode_utf16(str)
+      array_enc=str.unpack('C*')
+      array_utf8 = []
+      2.step(array_enc.size-1, 2){|i| 
+        array_utf8 << (array_enc.at(i+1) + array_enc.at(i)*0x100)
+      }
+      array_utf8.pack('U*')
+    end
+
+    register(UTF_16) do |obj|
+      class << obj
+        alias decode decode_utf16
+        alias encode encode_utf16
+      end
+    end
+  end
+end