/usr/include/podofo/base/PdfInputStream.h is in libpodofo-dev 0.9.4-6.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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* Copyright (C) 2007 by Dominik Seichter *
* domseichter@web.de *
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU Library General Public License as *
* published by the Free Software Foundation; either version 2 of the *
* License, or (at your option) any later version. *
* *
* This program is distributed in the hope that it will be useful, *
* but WITHOUT ANY WARRANTY; without even the implied warranty of *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
* GNU General Public License for more details. *
* *
* You should have received a copy of the GNU Library General Public *
* License along with this program; if not, write to the *
* Free Software Foundation, Inc., *
* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
* *
* In addition, as a special exception, the copyright holders give *
* permission to link the code of portions of this program with the *
* OpenSSL library under certain conditions as described in each *
* individual source file, and distribute linked combinations *
* including the two. *
* You must obey the GNU General Public License in all respects *
* for all of the code used other than OpenSSL. If you modify *
* file(s) with this exception, you may extend this exception to your *
* version of the file(s), but you are not obligated to do so. If you *
* do not wish to do so, delete this exception statement from your *
* version. If you delete this exception statement from all source *
* files in the program, then also delete it here. *
***************************************************************************/
#ifndef _PDF_INPUT_STREAM_H_
#define _PDF_INPUT_STREAM_H_
#include "PdfDefines.h"
namespace PoDoFo {
class PdfInputDevice;
/** An interface for reading blocks of data from an
* a data source.
*/
class PODOFO_API PdfInputStream {
public:
virtual ~PdfInputStream() { };
/** Read data from the input stream
*
* \param pBuffer the data will be stored into this buffer
* \param lLen the size of the buffer and number of bytes
* that will be read
* \param pTotalLeft total bytes left (needed for AES IV and padding)
*
* \returns the number of bytes read, -1 if an error ocurred
* and zero if no more bytes are available for reading.
*/
virtual pdf_long Read( char* pBuffer, pdf_long lLen, pdf_long *pTotalLeft = 0 ) = 0;
};
/** An input stream that reads data from a file
*/
class PODOFO_API PdfFileInputStream : public PdfInputStream {
public:
/** Open a file for reading data
*
* \param pszFilename the filename of the file to read
*/
PdfFileInputStream( const char* pszFilename );
#ifdef _WIN32
/** Open a file for reading data
*
* \param pszFilename the filename of the file to read
*
* This is an overloaded member function to allow working
* with unicode characters. On Unix systes you can also path
* UTF-8 to the const char* overload.
*/
PdfFileInputStream( const wchar_t* pszFilename );
#endif // _WIN32
~PdfFileInputStream();
/** Read data from the input stream
*
* \param pBuffer the data will be stored into this buffer
* \param lLen the size of the buffer and number of bytes
* that will be read
*
* \returns the number of bytes read, -1 if an error ocurred
* and zero if no more bytes are available for reading.
*/
virtual pdf_long Read( char* pBuffer, pdf_long lLen, pdf_long* = 0 );
/** Get the length of the file.
* \return the file length
*/
pdf_long GetFileLength();
/** Get the internal FILE handle.
* \return the internal FILE handle
*/
FILE* GetHandle();
private:
FILE* m_hFile;
};
/** An input stream that reads data from a memory buffer
*/
class PODOFO_API PdfMemoryInputStream : public PdfInputStream {
public:
/** Open a file for reading data
*
* \param pBuffer buffer to read from
* \param lBufferLen length of the buffer
*/
PdfMemoryInputStream( const char* pBuffer, pdf_long lBufferLen );
~PdfMemoryInputStream();
/** Read data from the input stream
*
* \param pBuffer the data will be stored into this buffer
* \param lLen the size of the buffer and number of bytes
* that will be read
*
* \returns the number of bytes read, -1 if an error ocurred
* and zero if no more bytes are available for reading.
*/
virtual pdf_long Read( char* pBuffer, pdf_long lLen, pdf_long* );
private:
const char* m_pBuffer;
const char* m_pCur;
pdf_long m_lBufferLen;
};
/** An input stream that reads data from an input device
*/
class PODOFO_API PdfDeviceInputStream : public PdfInputStream {
public:
/**
* Read from an alread opened input device
*
* \param pDevice an input device
*/
PdfDeviceInputStream( PdfInputDevice* pDevice );
~PdfDeviceInputStream();
/** Read data from the input stream
*
* \param pBuffer the data will be stored into this buffer
* \param lLen the size of the buffer and number of bytes
* that will be read
*
* \returns the number of bytes read, -1 if an error ocurred
* and zero if no more bytes are available for reading.
*/
virtual pdf_long Read( char* pBuffer, pdf_long lLen, pdf_long* );
private:
PdfInputDevice* m_pDevice;
};
};
#endif // _PDF_INPUT_STREAM_H_
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