C++ (Cpp) __p__environ示例

示例#1

文件： ucrtbase_compat.c 项目： mirror/mingw-w64

// Wrappers with legacy msvcrt.dll style API, based on the new ucrtbase.dll functions.
int __cdecl __getmainargs(int * _Argc, char *** _Argv, char ***_Env, int _DoWildCard, _startupinfo *_StartInfo)
{
  _initialize_narrow_environment();
  _configure_narrow_argv(_DoWildCard ? 2 : 1);
  *_Argc = *__p___argc();
  *_Argv = *__p___argv();
  *_Env = *__p__environ();
  if (_StartInfo)
    _set_new_mode(_StartInfo->newmode);
  return 0;
}

示例#2

文件： getenv.c 项目： GYGit/reactos

/*
 * @implemented
 */
char *getenv(const char *name)
{
   char **env;
   size_t length = strlen(name);

   for (env = *__p__environ(); *env; env++)
   {
      char *str = *env;
      char *pos = strchr(str,'=');
      if (pos && ((unsigned int)(pos - str) == length) && !_strnicmp(str, name, length))
         return pos + 1;
   }
   return NULL;
}