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/* Copyright (C) 2014 Wildfire Games.
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sublicense, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice shall be included
* in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
#include "precompiled.h"
#include "lib/sysdep/os/win/wversion.h"
#include "lib/sysdep/os/win/win.h"
#include "lib/sysdep/os/win/winit.h"
WINIT_REGISTER_EARLY_INIT(wversion_Init);
static wchar_t windowsVersionString[20];
static size_t windowsVersion; // see WVERSION_*
const wchar_t* wversion_Family()
{
ENSURE(windowsVersion != 0);
switch(windowsVersion)
{
case WVERSION_2K:
return L"Win2k";
case WVERSION_XP:
return L"WinXP";
case WVERSION_XP64:
return L"WinXP64";
case WVERSION_VISTA:
return L"Vista";
case WVERSION_7:
return L"Win7";
case WVERSION_8:
return L"Win8";
case WVERSION_8_1:
return L"Win8.1";
case WVERSION_10:
return L"Win10";
default:
return L"Windows";
}
}
const wchar_t* wversion_String()
{
ENSURE(windowsVersionString[0] != '\0');
return windowsVersionString;
}
size_t wversion_Number()
{
ENSURE(windowsVersion != 0);
return windowsVersion;
}
static Status wversion_Init()
{
// note: don't use GetVersion[Ex] because it gives the version of the
// emulated OS when running an app with compatibility shims enabled.
HKEY hKey;
if(RegOpenKeyExW(HKEY_LOCAL_MACHINE, L"SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion", 0, KEY_QUERY_VALUE, &hKey) == ERROR_SUCCESS)
{
DWORD size = sizeof(windowsVersionString);
(void)RegQueryValueExW(hKey, L"CurrentVersion", 0, 0, (LPBYTE)windowsVersionString, &size);
unsigned major = 0, minor = 0;
// ICC 11.1.082 generates incorrect code for the following:
// const int ret = swscanf_s(windowsVersionString, L"%u.%u", &major, &minor);
std::wstringstream ss(windowsVersionString);
ss >> major;
wchar_t dot;
ss >> dot;
ENSURE(dot == '.');
ss >> minor;
ENSURE(4 <= major && major <= 0xFF);
ENSURE(minor <= 0xFF);
windowsVersion = (major << 8) | minor;
RegCloseKey(hKey);
}
else
DEBUG_WARN_ERR(ERR::LOGIC);
return INFO::OK;
}
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