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