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EdgeIterator.h
Go to the documentation of this file.
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/*
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* steghide 0.5.1 - a steganography program
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* Copyright (C) 1999-2003 Stefan Hetzl <shetzl@chello.at>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*
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*/
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#ifndef SH_EDGEITERATOR_H
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#define SH_EDGEITERATOR_H
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#include <list>
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#include "
Edge.h
"
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class
Graph
;
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#include "
SampleOccurence.h
"
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class
SampleValue
;
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class
Vertex
;
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class
EdgeIterator
{
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public
:
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enum
ITERATIONMODE
{
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SAMPLEOCCURENCE
,
// incrementing increments to next sample occurence (possibly of the same sample value) thus using every edge of the source vertex
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SAMPLEVALUE
// incrementing increments to the next sample value thus not using all edges in general
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} ;
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EdgeIterator
(
void
) ;
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EdgeIterator
(
Vertex
*v,
ITERATIONMODE
m =
SAMPLEOCCURENCE
) ;
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EdgeIterator
(
const
EdgeIterator
& eit) ;
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~EdgeIterator
(
void
) ;
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const
Edge
*
operator*
(
void
)
const
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{
return
((
Finished
) ? NULL : &
CurrentEdge
) ; }
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void
operator++
(
void
) ;
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void
reset
(
Vertex
* v,
ITERATIONMODE
m =
SAMPLEOCCURENCE
) ;
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void
reset
(
ITERATIONMODE
m =
SAMPLEOCCURENCE
) ;
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bool
isFinished
(
void
)
const
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{
return
Finished
; } ;
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VertexLabel
getPartnerVertexLabel
(
void
)
const
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{
return
SampleOccurenceIt
->getVertex()->getLabel() ; } ;
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static
UWORD32
getMaxNumEdges
(
void
)
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{
return
MaxNumEdges
; } ;
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static
void
setMaxNumEdges
(
UWORD32
mne)
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{
MaxNumEdges
= mne ; } ;
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void
print
(
unsigned
short
spc = 0)
const
;
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private
:
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Edge
CurrentEdge
;
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ITERATIONMODE
Mode
;
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unsigned
long
*
SVALIndices
;
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static
UWORD32
MaxNumEdges
;
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UWORD32
EdgeIndex
;
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bool
Finished
;
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std::list<SampleOccurence>::const_iterator
SampleOccurenceIt
;
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void
findNextEdge
(
void
) ;
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bool
isDestSampleValueOK
(
const
SampleValue
*sv) ;
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} ;
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#endif // ndef SH_EDGEITERATOR_H
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