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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* This file is part of the LibreOffice project.
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*
* This file incorporates work covered by the following license notice:
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed
* with this work for additional information regarding copyright
* ownership. The ASF licenses this file to you under the Apache
* License, Version 2.0 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy of
* the License at http://www.apache.org/licenses/LICENSE-2.0 .
*/
#if !defined WIN32_LEAN_AND_MEAN
# define WIN32_LEAN_AND_MEAN
#endif
#include <windows.h>
#include <stdio.h>
#include <objidl.h>
#include <stream_helper.hxx>
BufferStream::BufferStream(IStream *str) :
stream(str)
{
// These next few lines work around the "Seek pointer" bug found on Vista.
char cBuf[20];
unsigned long nCount;
ULARGE_INTEGER nNewPosition;
LARGE_INTEGER nMove;
nMove.QuadPart = 0;
stream->Seek( nMove, STREAM_SEEK_SET, &nNewPosition );
stream->Read( cBuf, 20, &nCount );
}
BufferStream::~BufferStream()
{
}
unsigned long BufferStream::sread (unsigned char *buf, unsigned long size)
{
unsigned long newsize;
HRESULT hr;
hr = stream->Read (buf, size, &newsize);
if (hr == S_OK)
return newsize;
else
return static_cast<unsigned long>(0);
}
long BufferStream::stell ()
{
HRESULT hr;
LARGE_INTEGER Move;
ULARGE_INTEGER NewPosition;
Move.QuadPart = 0;
NewPosition.QuadPart = 0;
hr = stream->Seek (Move, STREAM_SEEK_CUR, &NewPosition);
if (hr == S_OK)
return static_cast<long>(NewPosition.QuadPart);
else
return -1;
}
long BufferStream::sseek (long offset, int origin)
{
HRESULT hr;
LARGE_INTEGER Move;
DWORD dwOrigin;
Move.QuadPart = static_cast<__int64>(offset);
switch (origin)
{
case SEEK_CUR:
dwOrigin = STREAM_SEEK_CUR;
break;
case SEEK_END:
dwOrigin = STREAM_SEEK_END;
break;
case SEEK_SET:
dwOrigin = STREAM_SEEK_SET;
break;
default:
return -1;
}
hr = stream->Seek (Move, dwOrigin, nullptr);
if (hr == S_OK)
return 0;
else
return -1;
}
FileStream::FileStream(const wchar_t *filename) :
file(nullptr)
{
// fdo#67534: avoid locking to not interfere with soffice opening the file
file = _wfsopen(filename, L"rb", _SH_DENYNO);
}
FileStream::~FileStream()
{
if (file)
fclose(file);
}
unsigned long FileStream::sread (unsigned char *buf, unsigned long size)
{
if (file)
return static_cast<unsigned long>(fread(buf, 1, size, file));
return 0;
}
long FileStream::stell ()
{
if (file)
return ftell(file);
return -1;
}
long FileStream::sseek (long offset, int origin)
{
if (file)
return fseek(file, offset, origin);
return -1;
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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