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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 .
*/
/**
* hwpio.h
* (C) 1999 Mizi Research, All rights are reserved
*/
#ifndef INCLUDED_HWPFILTER_SOURCE_HIODEV_H
#define INCLUDED_HWPFILTER_SOURCE_HIODEV_H
#include <sal/config.h>
#include <stdio.h>
#include <memory>
#include <sal/types.h>
#include "hwplib.h"
/**
* @short Abstract IO class
*/
class DLLEXPORT HIODev
{
protected:
bool compressed;
virtual void init();
public:
HIODev();
virtual ~HIODev();
virtual bool open() = 0;
virtual void flush() = 0;
virtual bool state() const = 0;
/* gzip routine wrapper */
virtual bool setCompressed( bool ) = 0;
virtual bool read1b(unsigned char &out) = 0;
virtual bool read1b(char &out) = 0;
virtual bool read2b(unsigned short &out) = 0;
virtual bool read4b(unsigned int &out) = 0;
virtual bool read4b(int &out) = 0;
virtual size_t readBlock( void *ptr, size_t size ) = 0;
virtual size_t skipBlock( size_t size ) = 0;
size_t read1b( void *ptr, size_t nmemb );
size_t read2b( void *ptr, size_t nmemb );
size_t read4b( void *ptr, size_t nmemb );
};
struct gz_stream;
/* File input and output devices */
/**
* This controls the HStream given by constructor
* @short Stream IO device
*/
class HStreamIODev final: public HIODev
{
private:
/* zlib으로 압축을 풀기 위한 자료 구조 */
std::unique_ptr<HStream> _stream;
gz_stream *_gzfp;
public:
explicit HStreamIODev(HStream* stream);
virtual ~HStreamIODev() override;
/**
* Check whether the stream is available
*/
virtual bool open() override;
/**
* If the stream is gzipped, flush the stream.
*/
virtual void flush() override;
/**
* Not implemented.
*/
virtual bool state() const override;
/**
* Set whether the stream is compressed or not
*/
virtual bool setCompressed( bool ) override;
/**
* Read one byte from stream
*/
using HIODev::read1b;
virtual bool read1b(unsigned char &out) override;
virtual bool read1b(char &out) override;
/**
* Read 2 bytes from stream
*/
using HIODev::read2b;
virtual bool read2b(unsigned short &out) override;
/**
* Read 4 bytes from stream
*/
using HIODev::read4b;
virtual bool read4b(unsigned int &out) override;
virtual bool read4b(int &out) override;
/**
* Read some bytes from stream to given pointer as amount of size
*/
virtual size_t readBlock( void *ptr, size_t size ) override;
/**
* Move current pointer of stream as amount of size
*/
virtual size_t skipBlock( size_t size ) override;
private:
/**
* Initialize this object
*/
virtual void init() override;
};
/* Memory, input and output devices */
/**
* The HMemIODev class controls the Input/Output device.
* @short Memory IO device
*/
class HMemIODev final: public HIODev
{
uchar *ptr;
size_t pos, length;
public:
HMemIODev(char *s, size_t len);
virtual ~HMemIODev() override;
virtual bool open() override;
virtual void flush() override;
virtual bool state() const override;
/* gzip routine wrapper */
virtual bool setCompressed( bool ) override;
using HIODev::read1b;
virtual bool read1b(unsigned char &out) override;
virtual bool read1b(char &out) override;
using HIODev::read2b;
virtual bool read2b(unsigned short &out) override;
using HIODev::read4b;
virtual bool read4b(unsigned int &out) override;
virtual bool read4b(int &out) override;
virtual size_t readBlock( void *ptr, size_t size ) override;
virtual size_t skipBlock( size_t size ) override;
private:
virtual void init() override;
};
#endif // INCLUDED_HWPFILTER_SOURCE_HIODEV_H
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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