Function getEnvironmentVar

flow/Platform.actor.cpp:3005–3033

namespace platform {

bool getEnvironmentVar(const char* name, std::string& value) {
#if defined(__unixish__)
	char* val = getenv(name);
	if (val) {
		value = std::string(val);
		return true;
	}
	return false;
#elif defined(_WIN32)
	int len = GetEnvironmentVariable(name, nullptr, 0);
	if (len == 0) {
		if (GetLastError() == ERROR_ENVVAR_NOT_FOUND) {
			return false;
		}
		TraceEvent(SevError, "GetEnvironmentVariable").detail("Name", name).GetLastError();
		throw platform_error();
	}
	value.resize(len);
	int rc = GetEnvironmentVariable(name, &value[0], len);
	if (rc + 1 != len) {
		TraceEvent(SevError, "WrongEnvVarLength").detail("ExpectedLength", len).detail("ReceivedLength", rc + 1);
		throw platform_error();
	}
	value.resize(len - 1);
	return true;
#else
#error Port me!
#endif
}

int setEnvironmentVar(const char* name, const char* value, int overwrite) {
#if defined(_WIN32)