Index: CPythonLib/encodings/bridge_to_java.py
===================================================================
--- CPythonLib/encodings/bridge_to_java.py	(revision 0)
+++ CPythonLib/encodings/bridge_to_java.py	(revision 0)
@@ -0,0 +1,48 @@
+"""
+shift_jis.py: Python Unicode Codec for Shift JIS
+
+Written by NISHIO Hirokazu (Cybozu Labs Inc.) <python@nishiohirokazu.org>
+
+"""
+
+import codecs
+
+def create_codec(encoding_name):
+    def _chr(n):
+        "change from -128..127 to 0..255 and chr it"
+        return chr((n + 256) % 256)
+
+    class Codec(codecs.Codec):
+        def encode(self, data, errors='strict'):
+            from java.lang import String
+            pys = "".join(map(_chr, String(data).getBytes(encoding_name)))
+            return (pys, len(data))
+
+        def decode(self, data, errors='strict'):
+            from java.lang import String
+            javas = String(data, encoding_name)
+            pys = "".join(javas.toCharArray())
+            return (pys, len(data))
+    
+    return Codec
+
+def getregentry(encoding_name):
+    "shortcut to make 'getregentry' function"
+    Codec = create_codec(encoding_name)
+    class StreamReader(Codec, codecs.StreamReader):
+        pass
+
+    class StreamWriter(Codec, codecs.StreamWriter):
+        pass
+
+    def getregentry():
+        return (
+            Codec().encode,
+            Codec().decode,
+            StreamReader,
+            StreamWriter,
+        )
+    
+    return getregentry
+
+
Index: CPythonLib/encodings/euc_jp.py
===================================================================
--- CPythonLib/encodings/euc_jp.py	(revision 0)
+++ CPythonLib/encodings/euc_jp.py	(revision 0)
@@ -0,0 +1,16 @@
+"""
+euc_jp.py: Python Unicode Codec for euc_jp
+
+Written by 
+    NISHIO Hirokazu <python@nishiohirokazu.org>
+
+>>> u = u'\u3053\u3093\u306b\u3061\u306f'
+>>> s = u.encode("euc_jp")
+>>> assert s == '\xa4\xb3\xa4\xf3\xa4\xcb\xa4\xc1\xa4\xcf'
+>>> u2 = s.decode("euc_jp")
+>>> assert u2 == u
+"""
+
+import bridge_to_java
+
+getregentry = bridge_to_java.getregentry("euc_jp")
Index: CPythonLib/encodings/iso2022_jp.py
===================================================================
--- CPythonLib/encodings/iso2022_jp.py	(revision 0)
+++ CPythonLib/encodings/iso2022_jp.py	(revision 0)
@@ -0,0 +1,16 @@
+"""
+iso2022_jp.py: Python Unicode Codec for iso2022_jp
+
+Written by 
+    NISHIO Hirokazu <python@nishiohirokazu.org>
+
+>>> u = u'\u3053\u3093\u306b\u3061\u306f'
+>>> s = u.encode("iso2022_jp")
+>>> assert s == '\x1b$B$3$s$K$A$O\x1b(B'
+>>> u2 = s.decode("iso2022_jp")
+>>> assert u2 == u
+"""
+
+import bridge_to_java
+
+getregentry = bridge_to_java.getregentry("iso2022jp")
Index: CPythonLib/encodings/ms932.py
===================================================================
--- CPythonLib/encodings/ms932.py	(revision 0)
+++ CPythonLib/encodings/ms932.py	(revision 0)
@@ -0,0 +1,16 @@
+"""
+ms932.py: Python Unicode Codec for ms932
+
+Written by 
+    NISHIO Hirokazu <python@nishiohirokazu.org>
+
+>>> u = u'\u3053\u3093\u306b\u3061\u306f'
+>>> s = u.encode("ms932")
+>>> assert s == '\x82\xb1\x82\xf1\x82\xc9\x82\xbf\x82\xcd'
+>>> u2 = s.decode("ms932")
+>>> assert u2 == u
+"""
+
+import bridge_to_java
+
+getregentry = bridge_to_java.getregentry("ms932")
Index: CPythonLib/encodings/shift_jis.py
===================================================================
--- CPythonLib/encodings/shift_jis.py	(revision 0)
+++ CPythonLib/encodings/shift_jis.py	(revision 0)
@@ -0,0 +1,16 @@
+"""
+shift_jis.py: Python Unicode Codec for shift_jis
+
+Written by 
+    NISHIO Hirokazu <python@nishiohirokazu.org>
+
+>>> u = u'\u3053\u3093\u306b\u3061\u306f'
+>>> s = u.encode("shift_jis")
+>>> assert s == '\x82\xb1\x82\xf1\x82\xc9\x82\xbf\x82\xcd'
+>>> u2 = s.decode("shift_jis")
+>>> assert u2 == u
+"""
+
+from encodings import bridge_to_java
+
+getregentry = bridge_to_java.getregentry("shift_jis")
Index: CPythonLib/test/test_japanese_codecs.py
===================================================================
--- CPythonLib/test/test_japanese_codecs.py	(revision 0)
+++ CPythonLib/test/test_japanese_codecs.py	(revision 0)
@@ -0,0 +1,18 @@
+"""
+test_japanese_codecs.py: test following modules
+ * encoding/shift_jis.py
+ * encoding/euc_jp.py
+ * encoding/iso2022_jp.py
+ * encoding/ms932.py
+
+Written by 
+    NISHIO Hirokazu <python@nishiohirokazu.org>
+"""
+
+import doctest
+import encodings
+
+doctest.testmod(encodings.shift_jis)
+doctest.testmod(encodings.euc_jp)
+doctest.testmod(encodings.iso2022_jp)
+doctest.testmod(encodings.ms932)