#include "global.h"
#include "ErrorStrings.h"
#include "RageUtil.h"

#include <windows.h>

RString werr_ssprintf( int err, const char *fmt, ... )
{
	char buf[1024] = "";
	FormatMessage(FORMAT_MESSAGE_FROM_SYSTEM,
		0, err, 0, buf, sizeof(buf), NULL);

	// Why is FormatMessage returning text ending with \r\n? (who? -aj)
	// Perhaps it's because you're on Windows, where newlines are \r\n. -aj
	RString text = buf;
	text.Replace( "\n", "" );
	text.Replace( "\r", " " ); // foo\r\nbar -> foo bar
	TrimRight( text ); // "foo\r\n" -> "foo"

	va_list	va;
	va_start(va, fmt);
	RString s = vssprintf( fmt, va );
	va_end(va);

	return s += ssprintf( " (%s)", text.c_str() );
}

RString ConvertWstringToCodepage( wstring s, int iCodePage )
{
	if( s.empty() )
		return RString();

	int iBytes = WideCharToMultiByte( iCodePage, 0, s.data(), s.size(), 
					NULL, 0, NULL, FALSE );
	ASSERT_M( iBytes > 0, werr_ssprintf( GetLastError(), "WideCharToMultiByte" ).c_str() );

	RString ret;
	WideCharToMultiByte( CP_ACP, 0, s.data(), s.size(), 
					ret.GetBuffer( iBytes ), iBytes, NULL, FALSE );
	ret.ReleaseBuffer( iBytes );

	return ret;
}

RString ConvertUTF8ToACP( const RString &s )
{
	return ConvertWstringToCodepage( RStringToWstring(s), CP_ACP );
}

wstring ConvertCodepageToWString( RString s, int iCodePage )
{
	if( s.empty() )
		return wstring();

	int iBytes = MultiByteToWideChar( iCodePage, 0, s.data(), s.size(), NULL, 0 );
	ASSERT_M( iBytes > 0, werr_ssprintf( GetLastError(), "MultiByteToWideChar" ).c_str() );

	wchar_t *pTemp = new wchar_t[iBytes];
	MultiByteToWideChar( iCodePage, 0, s.data(), s.size(), pTemp, iBytes );
	wstring sRet( pTemp, iBytes );
	delete [] pTemp;

	return sRet;
}

RString ConvertACPToUTF8( const RString &s )
{
	return WStringToRString( ConvertCodepageToWString(s, CP_ACP) );
}

/*
 * Copyright (c) 2001-2005 Chris Danford, Glenn Maynard
 * All rights reserved.
 *
 * 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, and/or sell copies of the Software, and to permit persons to
 * whom the Software is furnished to do so, provided that the above
 * copyright notice(s) and this permission notice appear in all copies of
 * the Software and that both the above copyright notice(s) and this
 * permission notice appear in supporting documentation.
 *
 * 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 OF
 * THIRD PARTY RIGHTS. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR HOLDERS
 * INCLUDED IN THIS NOTICE BE LIABLE FOR ANY CLAIM, OR ANY SPECIAL INDIRECT
 * OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS
 * OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
 * OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
 * PERFORMANCE OF THIS SOFTWARE.
 */