memcoll.c (memcoll) [!HAVE_STRCOLL]: Clear errno.

[gnulib.git] / lib / localcharset.c

diff --git a/lib/localcharset.c b/lib/localcharset.c
index 2b1564e..eb5563d 100644 (file)
--- a/lib/localcharset.c
+++ b/lib/localcharset.c
@@ -1,21 +1,20 @@
 /* Determine a canonical name for the current locale's character encoding.
 
-   Copyright (C) 2000-2002 Free Software Foundation, Inc.
+   Copyright (C) 2000-2003 Free Software Foundation, Inc.
 
-   This program is free software; you can redistribute it and/or modify it
-   under the terms of the GNU Library General Public License as published
-   by the Free Software Foundation; either version 2, or (at your option)
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 2, or (at your option)
    any later version.
 
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
-   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-   Library General Public License for more details.
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
 
-   You should have received a copy of the GNU Library General Public
-   License along with this program; if not, write to the Free Software
-   Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
-   USA.  */
+   You should have received a copy of the GNU General Public License along
+   with this program; if not, write to the Free Software Foundation,
+   Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
 
 /* Written by Bruno Haible <bruno@clisp.org>.  */
 
@@ -23,6 +22,9 @@
 # include <config.h>
 #endif
 
+/* Specification.  */
+#include "localcharset.h"
+
 #if HAVE_STDDEF_H
 # include <stddef.h>
 #endif
@@ -64,6 +66,12 @@
 # include <os2.h>
 #endif
 
+#if ENABLE_RELOCATABLE
+# include "relocatable.h"
+#else
+# define relocate(pathname) (pathname)
+#endif
+
 #if defined _WIN32 || defined __WIN32__ || defined __EMX__ || defined __DJGPP__
   /* Win32, OS/2, DOS */
 # define ISSLASH(C) ((C) == '/' || (C) == '\\')
@@ -82,11 +90,6 @@
 # define getc getc_unlocked
 #endif
 
-#ifdef __cplusplus
-/* When compiling with "gcc -x c++", produce a function with C linkage.  */
-extern "C" const char * locale_charset (void);
-#endif
-
 /* The following static variable is declared 'volatile' to avoid a
    possible multithread problem in the function get_charset_aliases. If we
    are running in a threaded environment, and if two threads initialize
@@ -110,9 +113,9 @@ get_charset_aliases ()
   cp = charset_aliases;
   if (cp == NULL)
     {
-#if !defined WIN32
+#if !(defined VMS || defined WIN32)
       FILE *fp;
-      const char *dir = LIBDIR;
+      const char *dir = relocate (LIBDIR);
       const char *base = "charset.alias";
       char *file_name;
 
@@ -200,11 +203,36 @@ get_charset_aliases ()
 
 #else
 
+# if defined VMS
+      /* To avoid the troubles of an extra file charset.alias_vms in the
+        sources of many GNU packages, simply inline the aliases here.  */
+      /* The list of encodings is taken from the OpenVMS 7.3-1 documentation
+        "Compaq C Run-Time Library Reference Manual for OpenVMS systems"
+        section 10.7 "Handling Different Character Sets".  */
+      cp = "ISO8859-1" "\0" "ISO-8859-1" "\0"
+          "ISO8859-2" "\0" "ISO-8859-2" "\0"
+          "ISO8859-5" "\0" "ISO-8859-5" "\0"
+          "ISO8859-7" "\0" "ISO-8859-7" "\0"
+          "ISO8859-8" "\0" "ISO-8859-8" "\0"
+          "ISO8859-9" "\0" "ISO-8859-9" "\0"
+          /* Japanese */
+          "eucJP" "\0" "EUC-JP" "\0"
+          "SJIS" "\0" "SHIFT_JIS" "\0"
+          "DECKANJI" "\0" "DEC-KANJI" "\0"
+          "SDECKANJI" "\0" "EUC-JP" "\0"
+          /* Chinese */
+          "eucTW" "\0" "EUC-TW" "\0"
+          "DECHANYU" "\0" "DEC-HANYU" "\0"
+          "DECHANZI" "\0" "GB2312" "\0"
+          /* Korean */
+          "DECKOREAN" "\0" "EUC-KR" "\0";
+# endif
+
+# if defined WIN32
       /* To avoid the troubles of installing a separate file in the same
         directory as the DLL and of retrieving the DLL's directory at
         runtime, simply inline the aliases here.  */
 
-# if defined WIN32
       cp = "CP936" "\0" "GBK" "\0"
           "CP1361" "\0" "JOHAB" "\0"
           "CP20127" "\0" "ASCII" "\0"