rawstr4.h

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/*****************************************************************************
 *
 * rawstr4.h -  class RawStr4: a helper class for module drivers with string
 *      keys uncompressed requiring 4 bytes for their entry size
 *
 * $Id: rawstr4.h 3786 2020-08-30 11:35:14Z scribe $
 *
 * Copyright 2001-2013 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 RAWSTR4_H
#define RAWSTR4_H

#include <defs.h>
#include <sysdata.h>

SWORD_NAMESPACE_START

class FileDesc;
class SWBuf;

class SWDLLEXPORT RawStr4 {

private:
    static int instance;        // number of instantiated RawStr4 objects or derivitives
    char *path;
    bool caseSensitive;
    mutable long lastoff;       // for caching and optimizations

protected:
    static const int IDXENTRYSIZE;
    
    FileDesc *idxfd;
    FileDesc *datfd;
    void doSetText(const char *key, const char *buf, long len = -1);
    void doLinkEntry(const char *destkey, const char *srckey);

public:
    static const char nl;
    RawStr4(const char *ipath, int fileMode = -1, bool caseSensitive = false);
    virtual ~RawStr4();
    void getIDXBuf(long ioffset, char **buf) const;
    void getIDXBufDat(long ioffset, char **buf) const;
    signed char findOffset(const char *key, SW_u32 *start, SW_u32 *size, long away = 0, SW_u32 *idxoff = 0) const;
    void readText(SW_u32 start, SW_u32 *size, char **idxbuf, SWBuf &buf) const;
    static signed char createModule(const char *path);
};

SWORD_NAMESPACE_END
#endif