Merged Ryan's patch from revision 3238 in SDL 1.2

--HG--
extra : convert_revision : svn%3Ac70aab31-4412-0410-b14c-859654838e24/trunk%402507

src/stdlib/SDL_iconv.c

@@ -137,9 +137,10 @@ static struct
 };
 
 static const char *
-getlocale()
+getlocale(char *buffer, size_t bufsize)
 {
     const char *lang;
+    char *ptr;
 
     lang = SDL_getenv("LC_ALL");
     if (!lang) {
@@ -154,7 +155,20 @@ getlocale()
     if (!lang || !*lang || SDL_strcmp(lang, "C") == 0) {
         lang = "ASCII";
     }
-    return lang;
+
+    /* We need to trim down strings like "en_US.UTF-8@blah" to "UTF-8" */
+    ptr = SDL_strchr(lang, '.');
+    if (ptr != NULL) {
+        lang = ptr + 1;
+    }
+
+    SDL_strlcpy(buffer, lang, bufsize);
+    ptr = SDL_strchr(buffer, '@');
+    if (ptr != NULL) {
+        *ptr = '\0';            /* chop end of string. */
+    }
+
+    return buffer;
 }
 
 SDL_iconv_t
@@ -163,12 +177,14 @@ SDL_iconv_open(const char *tocode, const char *fromcode)
     int src_fmt = ENCODING_UNKNOWN;
     int dst_fmt = ENCODING_UNKNOWN;
     int i;
+    char fromcode_buffer[64];
+    char tocode_buffer[64];
 
     if (!fromcode || !*fromcode) {
-        fromcode = getlocale();
+        fromcode = getlocale(fromcode_buffer, sizeof(fromcode_buffer));
     }
     if (!tocode || !*tocode) {
-        fromcode = getlocale();
+        tocode = getlocale(tocode_buffer, sizeof(tocode_buffer));
     }
     for (i = 0; i < SDL_arraysize(encodings); ++i) {
         if (SDL_strcasecmp(fromcode, encodings[i].name) == 0) {