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treekeyidx.h

/******************************************************************************
 *  versekey.h - code for class 'versekey'- a standard Biblical verse key
 *
 * $Id: treekeyidx_8h-source.html,v 1.5 2002/10/31 11:30:16 joachim Exp $
 *
 * Copyright 1998 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>
#include <filemgr.h>

SWORD_NAMESPACE_START

class SWDLLEXPORT TreeKeyIdx : public TreeKey {

        class TreeNode {
        public:
                TreeNode();
                ~TreeNode();
                void clear();
                __u32 offset;
                __s32 parent;
                __s32 next;
                __s32 firstChild;
                char *name;
                __u16 dsize;
                char *userData;
        } currentNode;

        static SWClass classdef;

        char *path;

        FileDesc *idxfd;
        FileDesc *datfd;

        void getTreeNodeFromDatOffset(long ioffset, TreeNode *buf) const;
        char getTreeNodeFromIdxOffset(long ioffset, TreeNode *node) const;
        void saveTreeNode(TreeNode *node);
        void saveTreeNodeOffsets(TreeNode *node);
        void init();

public:
        TreeKeyIdx(const TreeKeyIdx &ikey);
        TreeKeyIdx (const char *idxPath, int fileMode = -1);
        ~TreeKeyIdx ();

        virtual SWKey *clone() const;

        virtual const char *getLocalName();
        virtual const char *setLocalName(const char *);

        virtual const char *getUserData(int *size = 0);
        virtual void setUserData(const char *userData, int size = 0);

        virtual const char *getFullName() const;

        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;



        // 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 char Traversable () { return 1; }

        static signed char create(const char *path);
};

SWORD_NAMESPACE_END

#endif

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