git.m6w6.name Git - m6w6/libmemcached/blob - test/lib/env.hpp

   1 /*
   2     +--------------------------------------------------------------------+
   3     | libmemcached - C/C++ Client Library for memcached                  |
   4     +--------------------------------------------------------------------+
   5     | Redistribution and use in source and binary forms, with or without |
   6     | modification, are permitted under the terms of the BSD license.    |
   7     | You should have received a copy of the license in a bundled file   |
   8     | named LICENSE; in case you did not receive a copy you can review   |
   9     | the terms online at: https://opensource.org/licenses/BSD-3-Clause  |
  10     +--------------------------------------------------------------------+
  11     | Copyright (c) 2006-2014 Brian Aker   https://datadifferential.com/ |
  12     | Copyright (c) 2020 Michael Wallner   <mike@php.net>                |
  13     +--------------------------------------------------------------------+
  14 */
  15
  16 #pragma once
  17
  18 #include "mem_config.h"
  19
  20 #include <cstdlib>
  21
  22 #if HAVE_SETENV
  23 #  define SET_ENV_EX(n, k, v, overwrite) setenv(k, v, (overwrite))
  24 #else // !HAVE_SETENV
  25 #  define SET_ENV_EX(n, k, v, overwrite) \
  26     do { \
  27       static char n##_env[] = k "=" v; \
  28       if ((overwrite) || !getenv(k)) { \
  29         putenv(n##_env); \
  30       } \
  31     } while (false)
  32 #endif
  33
  34 #define SET_ENV(symbolic_name, literal_env_var, literal_env_val) \
  35   SET_ENV_EX(symbolic_name, literal_env_var, literal_env_val, true)
  36
  37 static inline const char *getenv_else(const char *var, const char *defval) {
  38   auto val = getenv(var);
  39   if (val && *val) {
  40     return val;
  41   }
  42   return defval;
  43 }