rawtext4.cpp

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/******************************************************************************
 *
 *  rawtext4.cpp -  code for class 'RawText4'- a module that reads raw text
 *          files: ot and nt using indexs ??.bks ??.cps ??.vss
 *
 * $Id: rawtext4.cpp 3821 2020-11-02 18:33:02Z scribe $
 *
 * Copyright 2007-2013 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.
 *
 */

#include <stdio.h>
#include <fcntl.h>
#include <sysdata.h>

#include <utilstr.h>
#include <rawverse4.h>
#include <rawtext4.h>
#include <rawstr4.h>
#include <filemgr.h>
#include <versekey.h>
#include <stringmgr.h>

SWORD_NAMESPACE_START

/******************************************************************************
 * RawText4 Constructor - Initializes data for instance of RawText4
 *
 * ENT: iname - Internal name for module
 *  idesc - Name to display to user for module
 *  idisp    - Display object to use for displaying
 */

RawText4::RawText4(const char *ipath, const char *iname, const char *idesc, SWDisplay *idisp, SWTextEncoding enc, SWTextDirection dir, SWTextMarkup mark, const char* ilang, const char *versification)
        : SWText(iname, idesc, idisp, enc, dir, mark, ilang, versification),
        RawVerse4(ipath) {
}


/******************************************************************************
 * RawText4 Destructor - Cleans up instance of RawText4
 */

RawText4::~RawText4() {
}


bool RawText4::isWritable() const {
    return ((idxfp[0]->getFd() > 0) && ((idxfp[0]->mode & FileMgr::RDWR) == FileMgr::RDWR));
}


/******************************************************************************
 * RawText4::getRawEntry    - Returns the correct verse when char * cast
 *                  is requested
 *
 * RET: string buffer with verse
 */

SWBuf &RawText4::getRawEntryBuf() const {
    long  start = 0;
    unsigned long size = 0;
    const VerseKey &key = getVerseKey();

    findOffset(key.getTestament(), key.getTestamentIndex(), &start, &size);
    entrySize = (int)size;        // support getEntrySize call

    entryBuf = "";
    readText(key.getTestament(), start, size, entryBuf);

    rawFilter(entryBuf, 0); // hack, decipher
    rawFilter(entryBuf, &key);

//  if (!isUnicode())
        prepText(entryBuf);

    return entryBuf;
}


void RawText4::setEntry(const char *inbuf, long len) {
    VerseKey &key = getVerseKey();
    doSetText(key.getTestament(), key.getTestamentIndex(), inbuf, len);
}


void RawText4::linkEntry(const SWKey *inkey) {
    VerseKey &destkey = getVerseKey();
    const VerseKey *srckey = &getVerseKeyConst(inkey);
    doLinkEntry(destkey.getTestament(), destkey.getTestamentIndex(), srckey->getTestamentIndex());
}


/******************************************************************************
 * RawText4::deleteEntry    - deletes this entry
 *
 * RET: *this
 */

void RawText4::deleteEntry() {
    VerseKey &key = getVerseKey();
    doSetText(key.getTestament(), key.getTestamentIndex(), "");
}

/******************************************************************************
 * RawText4::increment  - Increments module key a number of entries
 *
 * ENT: increment   - Number of entries to jump forward
 *
 * RET: *this
 */

void RawText4::increment(int steps) {
    long  start;
    unsigned long size;
    VerseKey *tmpkey = &getVerseKey();

    findOffset(tmpkey->getTestament(), tmpkey->getTestamentIndex(), &start, &size);

    SWKey lastgood = *tmpkey;
    while (steps) {
        long laststart = start;
        unsigned long lastsize = size;
        SWKey lasttry = *tmpkey;
        (steps > 0) ? ++(*key) : --(*key);
        tmpkey = &getVerseKey();

        if ((error = key->popError())) {
            *key = lastgood;
            break;
        }
        long index = tmpkey->getTestamentIndex();
        findOffset(tmpkey->getTestament(), index, &start, &size);
        if (
            (((laststart != start) || (lastsize != size))   // we're a different entry
//              && (start > 0)
                && (size))  // and we actually have a size
                ||(!skipConsecutiveLinks)) {    // or we don't want to skip consecutive links
            steps += (steps < 0) ? 1 : -1;
            lastgood = *tmpkey;
        }
    }
    error = (error) ? KEYERR_OUTOFBOUNDS : 0;
}

bool RawText4::isLinked(const SWKey *k1, const SWKey *k2) const {
    long start1, start2;
    unsigned long size1, size2;
    const VerseKey *vk1 = &getVerseKey(k1);
    const VerseKey *vk2 = &getVerseKey(k2);
    if (vk1->getTestament() != vk2->getTestament()) return false;

    findOffset(vk1->getTestament(), vk1->getTestamentIndex(), &start1, &size1);
    findOffset(vk2->getTestament(), vk2->getTestamentIndex(), &start2, &size2);
    if (!size1 || !size2) return false;
    return start1 == start2;
}

bool RawText4::hasEntry(const SWKey *k) const {
    long start;
    unsigned long size;
    const VerseKey *vk = &getVerseKey(k);

    findOffset(vk->getTestament(), vk->getTestamentIndex(), &start, &size);
    return size;
}

SWORD_NAMESPACE_END