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/***************************************************************************
difference.h - description
-------------------
begin : Sun Mar 4 2001
copyright : (C) 2001-2003 by Otto Bruggeman
and John Firebaugh
email : otto.bruggeman@home.nl
jfirebaugh@kde.org
****************************************************************************/
/***************************************************************************
**
** This program is free software; you can redistribute it and/or modify
** it under the terms of the GNU General Public License as published by
** the Free Software Foundation; either version 2 of the License, or
** (at your option) any later version.
**
***************************************************************************/
#ifndef DIFFERENCE_H
#define DIFFERENCE_H
#include <tqvaluelist.h>
#include <tqvaluevector.h>
#include <kdebug.h>
class QString;
namespace Diff2
{
class LevenshteinTable;
class Marker
{
public:
enum Type { Start = 0, End = 1 };
public:
Marker()
{
m_type = Marker::Start;
m_offset = 0;
}
Marker( enum Marker::Type type, unsigned int offset )
{
m_type = type;
m_offset = offset;
}
~Marker() {}
public:
enum Marker::Type type() const { return m_type; }
unsigned int offset() const { return m_offset; }
void setType ( enum Marker::Type type ) { m_type = type; }
void setOffset( unsigned int offset ) { m_offset = offset; }
private:
enum Marker::Type m_type;
unsigned int m_offset;
};
typedef TQValueList<Marker*> MarkerList;
typedef TQValueList<Marker*>::iterator MarkerListIterator;
typedef TQValueList<Marker*>::const_iterator MarkerListConstIterator;
class DifferenceString
{
public:
DifferenceString()
{
// kdDebug(8101) << "DifferenceString::DifferenceString()" << endl;
}
DifferenceString( const TQString& string, const MarkerList& markerList = MarkerList() ) :
m_string( string ),
m_markerList( markerList )
{
// kdDebug(8101) << "DifferenceString::DifferenceString( " << string << ", " << markerList << " )" << endl;
calculateHash();
}
DifferenceString( const DifferenceString& ds ) :
m_string( ds.m_string ),
m_conflict( ds.m_conflict ),
m_hash( ds.m_hash ),
m_markerList( ds.m_markerList )
{
// kdDebug(8101) << "DifferenceString::DifferenceString( const DifferenceString& " << ds << " )" << endl;
}
~DifferenceString() {}
public:
const TQString& string() const
{
return m_string;
}
const TQString& conflictString() const
{
return m_conflict;
}
const MarkerList& markerList()
{
return m_markerList;
}
void setString( const TQString& string )
{
m_string = string;
calculateHash();
}
void setConflictString( const TQString& conflict )
{
m_conflict = conflict;
}
void setMarkerList( const MarkerList& markerList )
{
m_markerList = markerList;
}
void prepend( Marker* marker )
{
m_markerList.prepend( marker );
}
bool operator==( const DifferenceString& ks )
{
if ( m_hash != ks.m_hash )
return false;
return m_string == ks.m_string;
}
protected:
void calculateHash()
{
unsigned short const* str = reinterpret_cast<unsigned short const*>( m_string.unicode() );
const unsigned int len = m_string.length();
m_hash = 1315423911;
for ( unsigned int i = 0; i < len; i++ )
{
m_hash ^= ( m_hash << 5 ) + str[i] + ( m_hash >> 2 );
}
}
private:
TQString m_string;
TQString m_conflict;
unsigned int m_hash;
MarkerList m_markerList;
};
typedef TQValueVector<DifferenceString*> DifferenceStringList;
typedef TQValueVector<DifferenceString*>::iterator DifferenceStringListIterator;
typedef TQValueVector<DifferenceString*>::const_iterator DifferenceStringListConstIterator;
class Difference
{
public:
enum Type { Change, Insert, Delete, Unchanged };
public:
Difference( int sourceLineNo, int destinationLineNo, int type = Difference::Unchanged );
~Difference();
public:
int type() const { return m_type; };
int sourceLineNumber() const { return m_sourceLineNo; }
int destinationLineNumber() const { return m_destinationLineNo; }
int sourceLineCount() const;
int destinationLineCount() const;
DifferenceString* sourceLineAt( int i ) { return m_sourceLines[ i ]; }
DifferenceString* destinationLineAt( int i ) { return m_destinationLines[ i ]; }
const DifferenceStringList sourceLines() const { return m_sourceLines; }
const DifferenceStringList destinationLines() const { return m_destinationLines; }
bool hasConflict() const
{
return m_conflicts;
}
void setConflict( bool conflicts )
{
m_conflicts = conflicts;
}
void apply( bool apply );
bool applied() const { return m_applied; }
void setType( int type ) { m_type = type; }
void addSourceLine( TQString line );
void addDestinationLine( TQString line );
/** This method will calculate the differences between the individual strings and store them as Markers */
void determineInlineDifferences();
TQString recreateDifference() const;
private:
int m_type;
int m_sourceLineNo;
int m_destinationLineNo;
DifferenceStringList m_sourceLines;
DifferenceStringList m_destinationLines;
bool m_applied;
bool m_conflicts;
LevenshteinTable* m_tableXXX; // now unused
};
typedef TQValueList<Difference*> DifferenceList;
typedef TQValueList<Difference*>::iterator DifferenceListIterator;
typedef TQValueList<Difference*>::const_iterator DifferenceListConstIterator;
} // End of namespace Diff2
#endif
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