Update localcharset module from GNU gettext.

[gnulib.git] / lib / localcharset.c

diff --git a/lib/localcharset.c b/lib/localcharset.c
index d03ab79..08daf73 100644 (file)
--- a/lib/localcharset.c
+++ b/lib/localcharset.c
@@ -40,8 +40,7 @@
 #endif
 
 #if defined _WIN32 || defined __WIN32__
-# undef WIN32   /* avoid warning on mingw32 */
-# define WIN32
+# define WIN32_NATIVE
 #endif
 
 #if defined __EMX__
@@ -49,7 +48,7 @@
 # define OS2
 #endif
 
-#if !defined WIN32
+#if !defined WIN32_NATIVE
 # if HAVE_LANGINFO_CODESET
 #  include <langinfo.h>
 # else
@@ -57,7 +56,11 @@
 #   include <locale.h>
 #  endif
 # endif
-#elif defined WIN32
+# ifdef __CYGWIN__
+#  define WIN32_LEAN_AND_MEAN
+#  include <windows.h>
+# endif
+#elif defined WIN32_NATIVE
 # define WIN32_LEAN_AND_MEAN
 # include <windows.h>
 #endif
@@ -113,7 +116,7 @@ get_charset_aliases (void)
   cp = charset_aliases;
   if (cp == NULL)
     {
-#if !(defined VMS || defined WIN32)
+#if !(defined VMS || defined WIN32_NATIVE || defined __CYGWIN__)
       FILE *fp;
       const char *dir;
       const char *base = "charset.alias";
@@ -239,7 +242,7 @@ get_charset_aliases (void)
           "DECKOREAN" "\0" "EUC-KR" "\0";
 # endif
 
-# if defined WIN32
+# if defined WIN32_NATIVE || defined __CYGWIN__
       /* 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.  */
@@ -291,13 +294,60 @@ locale_charset (void)
   const char *codeset;
   const char *aliases;
 
-#if !(defined WIN32 || defined OS2)
+#if !(defined WIN32_NATIVE || defined OS2)
 
 # if HAVE_LANGINFO_CODESET
 
   /* Most systems support nl_langinfo (CODESET) nowadays.  */
   codeset = nl_langinfo (CODESET);
 
+#  ifdef __CYGWIN__
+  /* Cygwin 2006 does not have locales.  nl_langinfo (CODESET) always
+     returns "US-ASCII".  As long as this is not fixed, return the suffix
+     of the locale name from the environment variables (if present) or
+     the codepage as a number.  */
+  if (codeset != NULL && strcmp (codeset, "US-ASCII") == 0)
+    {
+      const char *locale;
+      static char buf[2 + 10 + 1];
+
+      locale = getenv ("LC_ALL");
+      if (locale == NULL || locale[0] == '\0')
+       {
+         locale = getenv ("LC_CTYPE");
+         if (locale == NULL || locale[0] == '\0')
+           locale = getenv ("LANG");
+       }
+      if (locale != NULL && locale[0] != '\0')
+       {
+         /* If the locale name contains an encoding after the dot, return
+            it.  */
+         const char *dot = strchr (locale, '.');
+
+         if (dot != NULL)
+           {
+             const char *modifier;
+
+             dot++;
+             /* Look for the possible @... trailer and remove it, if any.  */
+             modifier = strchr (dot, '@');
+             if (modifier == NULL)
+               return dot;
+             if (modifier - dot < sizeof (buf))
+               {
+                 memcpy (buf, dot, modifier - dot);
+                 buf [modifier - dot] = '\0';
+                 return buf;
+               }
+           }
+       }
+
+      /* Woe32 has a function returning the locale's codepage as a number.  */
+      sprintf (buf, "CP%u", GetACP ());
+      codeset = buf;
+    }
+#  endif
+
 # else
 
   /* On old systems which lack it, use setlocale or getenv.  */
@@ -328,7 +378,7 @@ locale_charset (void)
 
 # endif
 
-#elif defined WIN32
+#elif defined WIN32_NATIVE
 
   static char buf[2 + 10 + 1];