celestia/src/celutil/winutil.cpp

81 lines
1.9 KiB
C++

// winutil.cpp
//
// Copyright (C) 2019-present, Celestia Development Team
// Copyright (C) 2002, Chris Laurel <claurel@shatters.net>
//
// Miscellaneous useful Windows-related functions.
//
// This program is free software; you can redistribute it and/or
// modify it under the terms of the GNU General Public License
// as published by the Free Software Foundation; either version 2
// of the License, or (at your option) any later version.
#include <windows.h>
#include "winutil.h"
using namespace std;
const char* CurrentCP()
{
static bool set = false;
static char cp[20] = "CP";
if (!set)
{
GetLocaleInfoA(GetThreadLocale(), LOCALE_IDEFAULTANSICODEPAGE, cp+2, 18);
set = true;
}
return cp;
}
string UTF8ToCurrentCP(const string& str)
{
return WideToCurrentCP(UTF8ToWide(str));
}
string CurrentCPToUTF8(const string& str)
{
return WideToUTF8(CurrentCPToWide(str));
}
string WStringToString(UINT codePage, const wstring& ws)
{
if (ws.empty())
return {};
// get a converted string length
auto len = WideCharToMultiByte(codePage, 0, ws.c_str(), ws.length(), NULL, 0, nullptr, nullptr);
string out(len, 0);
WideCharToMultiByte(codePage, 0, ws.c_str(), ws.length(), &out[0], len, nullptr, nullptr);
return out;
}
wstring StringToWString(UINT codePage, const string& s)
{
if (s.empty())
return {};
// get a converted string length
auto len = MultiByteToWideChar(codePage, 0, s.c_str(), s.length(), nullptr, 0);
wstring out(len, 0);
MultiByteToWideChar(codePage, 0, s.c_str(), s.length(), &out[0], len);
return out;
}
string WideToCurrentCP(const wstring& ws)
{
return WStringToString(CP_ACP, ws);
}
wstring CurrentCPToWide(const string& s)
{
return StringToWString(CP_ACP, s);
}
string WideToUTF8(const wstring& ws)
{
return WStringToString(CP_UTF8, ws);
}
wstring UTF8ToWide(const string& s)
{
return StringToWString(CP_UTF8, s);
}