/******************************************************************************
 *  zcom.h   - code for class 'zCom'- a module that reads compressed text
 *				files: ot and nt using indexs ??.vss
 *
 * $Id: zcom.h,v 1.19 2003/02/20 07:25:20 scribe 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 ZCOM_H
#define ZCOM_H

#include <rawverse.h>
#include <swcom.h>
#include <swcomprs.h>

#include <defs.h>

SWORD_NAMESPACE_START

class SWDLLEXPORT zCom:public zVerse, public SWCom {

	VerseKey *lastWriteKey;
	bool sameBlock(VerseKey * lastWriteKey, VerseKey * key);
	int blockType;
	VerseKey &getVerseKey();


public:

	zCom(const char *ipath, const char *iname = 0, const char *idesc = 0,
			int blockType = CHAPTERBLOCKS, SWCompress * icomp = 0,
			SWDisplay * idisp = 0, SWTextEncoding encoding = ENC_UNKNOWN,
			SWTextDirection dir = DIRECTION_LTR,
			SWTextMarkup markup = FMT_UNKNOWN, const char* ilang = 0);
	virtual ~zCom();
	virtual SWBuf &getRawEntryBuf();
	virtual void increment(int steps = 1);
	virtual void decrement(int steps = 1) { increment(-steps); }

	// write interface ----------------------------
	virtual bool isWritable() {
		return ((idxfp[0]->getFd() > 0) && ((idxfp[0]->mode & O_RDWR) == O_RDWR));
	}
	static char createModule(const char *path, int blockBound) {
		return zVerse::createModule(path, blockBound);
	}
	virtual void setEntry(const char *inbuf, long len = -1);	// Modify current module entry
	virtual void linkEntry(const SWKey * linkKey);	// Link current module entry to other module entry
	virtual void deleteEntry();	// Delete current module entry
	// end write interface ------------------------

	virtual void rawZFilter(SWBuf &buf, char direction = 0) { rawFilter(buf, (SWKey *)(long)direction); }// hack, use key as direction for enciphering

	// swcacher interface ----------------------
	virtual void flush() { flushCache(); }
	// end swcacher interface ----------------------

	SWMODULE_OPERATORS

};

SWORD_NAMESPACE_END

#endif
