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/**************************************************************************/
/* */
/* Copyright (c) 2001, 2011 NoMachine (http://www.nomachine.com) */
/* Copyright (c) 2008-2014 Oleksandr Shneyder <o.shneyder@phoca-gmbh.de> */
/* Copyright (c) 2014-2016 Ulrich Sibiller <uli42@gmx.de> */
/* Copyright (c) 2014-2016 Mihai Moldovan <ionic@ionic.de> */
/* Copyright (c) 2011-2016 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. */
/* */
/**************************************************************************/
#include "CharCache.h"
int CharCache::lookup(unsigned char value, unsigned int &index)
{
for (unsigned int i = 0; i < length_; i++)
if (value == buffer_[i])
{
index = i;
if (i)
{
unsigned int target = (i >> 1);
do
{
buffer_[i] = buffer_[i - 1];
i--;
}
while (i > target);
buffer_[target] = value;
}
return 1;
}
insert(value);
return 0;
}
void CharCache::insert(unsigned char value)
{
unsigned int insertionPoint = 0;
if (2 >= length_)
insertionPoint = length_;
else
insertionPoint = 2;
unsigned int start;
if (length_ >= 7)
start = 7 - 1;
else
{
start = length_;
length_++;
}
for (unsigned int k = start; k > insertionPoint; k--)
buffer_[k] = buffer_[k - 1];
buffer_[insertionPoint] = value;
}
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