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/**************************************************************************/
/* */
/* Copyright (c) 2001, 2007 NoMachine, http://www.nomachine.com/. */
/* */
/* NXCOMP, NX protocol compression and NX extensions to this software */
/* are copyright of NoMachine. Redistribution and use of the present */
/* software is allowed according to terms specified in the file LICENSE */
/* which comes in the source distribution. */
/* */
/* Check http://www.nomachine.com/licensing.html for applicability. */
/* */
/* NX and NoMachine are trademarks of NoMachine S.r.l. */
/* */
/* All rights reserved. */
/* */
/**************************************************************************/
#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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