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/******************************************************************************
*
* treekeyidx.h - code for class 'TreeKeyIdx'
*
* $Id: treekeyidx.h 2833 2013-06-29 06:40:28Z chrislit $
*
* Copyright 2002-2013 CrossWire Bible Society (http://www.crosswire.org)
* CrossWire Bible Society
* P. O. Box 2528
* Tempe, AZ 85280-2528
*
* 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 version 2.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
*/
#ifndef TREEKEYIDX_H
#define TREEKEYIDX_H
#include <treekey.h>
#include <sysdata.h>
SWORD_NAMESPACE_START
class FileDesc;
/**
* Class TreeKeyIdx
* The TreeKey implementation used for all tree-based modules in Sword, such as GenBooks.
*/
class SWDLLEXPORT TreeKeyIdx : public TreeKey {
class TreeNode {
public:
TreeNode();
~TreeNode();
void clear();
__s32 offset;
__s32 parent;
__s32 next;
__s32 firstChild;
char *name;
__u16 dsize;
char *userData;
} currentNode;
static SWClass classdef;
char *path;
FileDesc *idxfd;
FileDesc *datfd;
void init();
void getTreeNodeFromDatOffset(long ioffset, TreeNode *buf) const;
char getTreeNodeFromIdxOffset(long ioffset, TreeNode *node) const;
void saveTreeNode(TreeNode *node);
void saveTreeNodeOffsets(TreeNode *node);
public:
TreeKeyIdx(const TreeKeyIdx &ikey);
TreeKeyIdx(const char *idxPath, int fileMode = -1);
virtual ~TreeKeyIdx();
virtual SWKey *clone() const;
virtual const char *getLocalName();
virtual const char *setLocalName(const char *);
virtual const char *getUserData(int *size = 0) const;
virtual void setUserData(const char *userData, int size = 0);
virtual void root();
virtual bool parent();
virtual bool firstChild();
virtual bool nextSibling();
virtual bool previousSibling();
virtual bool hasChildren();
virtual void append();
virtual void appendChild();
virtual void insertBefore();
virtual void remove();
virtual void save();
virtual void copyFrom(const TreeKeyIdx &ikey);
virtual void copyFrom(const SWKey &ikey);
void setOffset(unsigned long offset);
unsigned long getOffset() const;
virtual int getLevel();
// OPERATORS ------------------------------------------------------------
virtual SWKey &operator = (const TreeKeyIdx &ikey) { copyFrom(ikey); return *this; }
SWKEY_OPERATORS
virtual void setText(const char *ikey);
virtual void setPosition(SW_POSITION p);
virtual const char *getText() const;
virtual int _compare (const TreeKeyIdx & ikey);
virtual int compare(const SWKey &ikey);
virtual void decrement(int steps = 1);
virtual void increment(int steps = 1);
virtual bool isTraversable() const { return true; }
static signed char create(const char *path);
};
SWORD_NAMESPACE_END
#endif
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