/usr/include/ebml/StdIOCallback.h is in libebml-dev 1.3.0-2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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** libebml : parse EBML files, see http://embl.sourceforge.net/
**
** <file/class description>
**
** Copyright (C) 2002-2004 Ingo Ralf Blum. All rights reserved.
**
** This library is free software; you can redistribute it and/or
** modify it under the terms of the GNU Lesser General Public
** License as published by the Free Software Foundation; either
** version 2.1 of the License, or (at your option) any later version.
**
** This library 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
** Lesser General Public License for more details.
**
** You should have received a copy of the GNU Lesser General Public
** License along with this library; if not, write to the Free Software
** Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
**
** See http://www.matroska.org/license/lgpl/ for LGPL licensing information.
**
** Contact license@matroska.org if any conditions of this licensing are
** not clear to you.
**
**********************************************************************/
/*!
\file
\version \$Id: StdIOCallback.h 1090 2005-03-16 12:47:59Z robux4 $
*/
#ifndef LIBEBML_STDIOCALLBACK_H
#define LIBEBML_STDIOCALLBACK_H
#include "IOCallback.h"
#include <stdexcept>
#include <cerrno>
// ----- Added 10/15/2003 by jcsston from Zen -----
#if defined (__BORLANDC__) //Maybe other compilers?
#include <errno.h>
#include <stdio.h>
#endif //__BORLANDC__
// ------------------------------------------------
START_LIBEBML_NAMESPACE
class EBML_DLL_API CRTError:public std::runtime_error
{
// Variablen...
private:
int Error;
// Methoden...
public:
CRTError(int Error,const std::string&Description);
CRTError(const std::string&Description,int Error=errno);
int getError()const throw(){return Error;}
};
// This class is currently private to the library, so there's no MATROSKA_EXPORT.
class EBML_DLL_API StdIOCallback:public IOCallback
{
private:
FILE*File;
uint64 mCurrentPosition;
public:
// StdIOCallback(const char*Path,const char*Mode);
StdIOCallback(const char*Path, const open_mode Mode);
virtual ~StdIOCallback()throw();
virtual uint32 read(void*Buffer,size_t Size);
// Seek to the specified position. The mode can have either SEEK_SET, SEEK_CUR
// or SEEK_END. The callback should return true(1) if the seek operation succeeded
// or false (0), when the seek fails.
virtual void setFilePointer(int64 Offset,seek_mode Mode=seek_beginning);
// This callback just works like its read pendant. It returns the number of bytes written.
virtual size_t write(const void*Buffer,size_t Size);
// Although the position is always positive, the return value of this callback is signed to
// easily allow negative values for returning errors. When an error occurs, the implementor
// should return -1 and the file pointer otherwise.
//
// If an error occurs, an exception should be thrown.
virtual uint64 getFilePointer();
// The close callback flushes the file buffers to disk and closes the file. When using the stdio
// library, this is equivalent to calling fclose. When the close is not successful, an exception
// should be thrown.
virtual void close();
};
END_LIBEBML_NAMESPACE
#endif
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