115   std::string env_var;  in FlagToEnvVar()  local
117     env_var += static_cast<char>(::toupper(flag_str.c_str()[i]));  in FlagToEnvVar()
119   return env_var;  in FlagToEnvVar()
125   const std::string env_var = FlagToEnvVar(flag);  in BoolFromEnv()  local
126   const char* const value_str = getenv(env_var.c_str());  in BoolFromEnv()
131   const std::string env_var = FlagToEnvVar(flag);  in Int32FromEnv()  local
132   const char* const value_str = getenv(env_var.c_str());  in Int32FromEnv()
135       !ParseInt32(std::string("Environment variable ") + env_var, value_str,  in Int32FromEnv()
143   const std::string env_var = FlagToEnvVar(flag);  in DoubleFromEnv()  local
144   const char* const value_str = getenv(env_var.c_str());  in DoubleFromEnv()
147       !ParseDouble(std::string("Environment variable ") + env_var, value_str,  in DoubleFromEnv()
155   const std::string env_var = FlagToEnvVar(flag);  in StringFromEnv()  local
156   const char* const value = getenv(env_var.c_str());  in StringFromEnv()
162   const std::string env_var = FlagToEnvVar(flag);  in KvPairsFromEnv()  local
163   const char* const value_str = getenv(env_var.c_str());  in KvPairsFromEnv()
168   if (!ParseKvPairs("Environment variable " + env_var, value_str, &value)) {  in KvPairsFromEnv()