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/**************************************************************************/
/* */
/* Copyright (c) 2001, 2011 NoMachine (http://www.nomachine.com) */
/* Copyright (c) 2008-2017 Oleksandr Shneyder <o.shneyder@phoca-gmbh.de> */
/* Copyright (c) 2014-2022 Ulrich Sibiller <uli42@gmx.de> */
/* Copyright (c) 2014-2019 Mihai Moldovan <ionic@ionic.de> */
/* Copyright (c) 2011-2022 Mike Gabriel <mike.gabriel@das-netzwerkteam.de>*/
/* Copyright (c) 2015-2016 Qindel Group (http://www.qindel.com) */
/* */
/* NXCOMP, NX protocol compression and NX extensions to this software */
/* are copyright of the aforementioned persons and companies. */
/* */
/* Redistribution and use of the present software is allowed according */
/* to terms specified in the file LICENSE.nxcomp which comes in the */
/* source distribution. */
/* */
/* All rights reserved. */
/* */
/* NOTE: This software has received contributions from various other */
/* contributors, only the core maintainers and supporters are listed as */
/* copyright holders. Please contact us, if you feel you should be listed */
/* as copyright holder, as well. */
/* */
/**************************************************************************/
#ifndef BlockCache_H
#define BlockCache_H
// Cache to hold an arbitrary-length block of bytes
class BlockCache
{
public:
BlockCache():buffer_(0), size_(0), checksum_(0)
{
}
~BlockCache()
{
delete[]buffer_;
}
int compare(unsigned int size, const unsigned char *data,
int overwrite = 1);
void set(unsigned int size, const unsigned char *data);
unsigned int getLength() const
{
return size_;
}
unsigned int getChecksum() const
{
return checksum_;
}
const unsigned char *getData() const
{
return buffer_;
}
static unsigned int checksum(unsigned int size, const unsigned char *data);
private:
unsigned char *buffer_;
unsigned int size_;
unsigned int checksum_;
};
#endif /* BlockCache_H */
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