kc3-lang/SDL/src/locale/unix/SDL_syslocale.c

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• Hash : 0479df53
  Author :
  Date : 2023-01-09T09:48:21
  

  Updated copyright for 2023

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• src/locale/unix/SDL_syslocale.c

• /*
    Simple DirectMedia Layer
    Copyright (C) 1997-2023 Sam Lantinga <slouken@libsdl.org>
  
    This software is provided 'as-is', without any express or implied
    warranty.  In no event will the authors be held liable for any damages
    arising from the use of this software.
  
    Permission is granted to anyone to use this software for any purpose,
    including commercial applications, and to alter it and redistribute it
    freely, subject to the following restrictions:
  
    1. The origin of this software must not be misrepresented; you must not
       claim that you wrote the original software. If you use this software
       in a product, an acknowledgment in the product documentation would be
       appreciated but is not required.
    2. Altered source versions must be plainly marked as such, and must not be
       misrepresented as being the original software.
    3. This notice may not be removed or altered from any source distribution.
  */
  
  #include "../../SDL_internal.h"
  #include "../SDL_syslocale.h"
  
  static void normalize_locale_str(char *dst, char *str, size_t buflen)
  {
      char *ptr;
  
      ptr = SDL_strchr(str, '.'); /* chop off encoding if specified. */
      if (ptr != NULL) {
          *ptr = '\0';
      }
  
      ptr = SDL_strchr(str, '@'); /* chop off extra bits if specified. */
      if (ptr != NULL) {
          *ptr = '\0';
      }
  
      /* The "C" locale isn't useful for our needs, ignore it if you see it. */
      if ((str[0] == 'C') && (str[1] == '\0')) {
          return;
      }
  
      if (*str) {
          if (*dst) {
              SDL_strlcat(dst, ",", buflen); /* SDL has these split by commas */
          }
          SDL_strlcat(dst, str, buflen);
      }
  }
  
  static void normalize_locales(char *dst, char *src, size_t buflen)
  {
      char *ptr;
  
      /* entries are separated by colons */
      while ((ptr = SDL_strchr(src, ':')) != NULL) {
          *ptr = '\0';
          normalize_locale_str(dst, src, buflen);
          src = ptr + 1;
      }
      normalize_locale_str(dst, src, buflen);
  }
  
  void SDL_SYS_GetPreferredLocales(char *buf, size_t buflen)
  {
      /* !!! FIXME: should we be using setlocale()? Or some D-Bus thing? */
      SDL_bool isstack;
      const char *envr;
      char *tmp;
  
      SDL_assert(buflen > 0);
      tmp = SDL_small_alloc(char, buflen, &isstack);
      if (tmp == NULL) {
          SDL_OutOfMemory();
          return;
      }
  
      *tmp = '\0';
  
      /* LANG is the primary locale (maybe) */
      envr = SDL_getenv("LANG");
      if (envr) {
          SDL_strlcpy(tmp, envr, buflen);
      }
  
      /* fallback languages */
      envr = SDL_getenv("LANGUAGE");
      if (envr) {
          if (*tmp) {
              SDL_strlcat(tmp, ":", buflen);
          }
          SDL_strlcat(tmp, envr, buflen);
      }
  
      if (*tmp == '\0') {
          SDL_SetError("LANG environment variable isn't set");
      } else {
          normalize_locales(buf, tmp, buflen);
      }
  
      SDL_small_free(tmp, isstack);
  }
  
  /* vi: set ts=4 sw=4 expandtab: */
  

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