From ef7057fe2f7634a91052e1bed39001c05fc34744 Mon Sep 17 00:00:00 2001
From: nobu <nobu@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
Date: Sun, 4 Jan 2009 06:41:43 +0000
Subject: [PATCH] * encoding.c (rb_filesystem_encoding, rb_locale_charmap):
 uses   codepage on cygwin.  [ruby-core:20994]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@21311 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
---
 ChangeLog    |  5 +++++
 configure.in |  3 ++-
 encoding.c   | 16 ++++++++++++----
 3 files changed, 19 insertions(+), 5 deletions(-)

diff --git a/ChangeLog b/ChangeLog
index 7427610f88..cd9c6f110a 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+Sun Jan  4 15:41:37 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
+
+	* encoding.c (rb_filesystem_encoding, rb_locale_charmap): uses
+	  codepage on cygwin.  [ruby-core:20994]
+
 Sun Jan  4 11:58:43 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
 
 	* numeric.c (ruby_float_step): extracted from num_step().
diff --git a/configure.in b/configure.in
index b362f20d00..b0b65201b2 100644
--- a/configure.in
+++ b/configure.in
@@ -565,7 +565,8 @@ beos*|haiku*)	ac_cv_func_link=no
 		esac
 		LIBS="$LIBS" # m lib is include in root under BeOS/Haiku
 		;;
-cygwin*)	;;
+cygwin*)	ac_cv_header_langinfo_h=no # nl_langinfo(CODESET) returns US-ASCII regardless locale. 
+		;;
 mingw*)		LIBS="-lshell32 -lws2_32 $LIBS"
 		ac_cv_header_a_out_h=no
 		ac_cv_header_pwd_h=no
diff --git a/encoding.c b/encoding.c
index eca4140a02..73eda32cb4 100644
--- a/encoding.c
+++ b/encoding.c
@@ -13,11 +13,19 @@
 #include "ruby/encoding.h"
 #include "regenc.h"
 #include <ctype.h>
-#ifdef HAVE_LANGINFO_H
+#ifndef NO_LOCALE_CHARMAP
+#if defined __CYGWIN__
+#include <windows.h>
+#elif defined HAVE_LANGINFO_H
 #include <langinfo.h>
 #endif
+#endif
 #include "ruby/util.h"
 
+#if defined _WIN32 || defined __CYGWIN__
+#define USE_CODEPAGE_LOCALE 1
+#endif
+
 static ID id_encoding;
 VALUE rb_cEncoding;
 static VALUE rb_encoding_list;
@@ -1025,7 +1033,7 @@ rb_encoding *
 rb_filesystem_encoding(void)
 {
     rb_encoding *enc;
-#if defined _WIN32
+#if defined USE_CODEPAGE_LOCALE
     enc = rb_locale_encoding();
 #elif defined __APPLE__
     enc = rb_enc_find("UTF8-MAC");
@@ -1204,12 +1212,12 @@ rb_locale_charmap(VALUE klass)
 {
 #if defined NO_LOCALE_CHARMAP
     return rb_usascii_str_new2("ASCII-8BIT");
+#elif defined USE_CODEPAGE_LOCALE
+    return rb_sprintf("CP%d", GetACP());
 #elif defined HAVE_LANGINFO_H
     char *codeset;
     codeset = nl_langinfo(CODESET);
     return rb_usascii_str_new2(codeset);
-#elif defined _WIN32
-    return rb_sprintf("CP%d", GetACP());
 #else
     return Qnil;
 #endif