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/******************************************************************************
*
* rawld.cpp - code for class 'RawLD'- a module that reads raw lexicon and
* dictionary files: *.dat *.idx
*
* $Id: rawld.cpp 2980 2013-09-14 21:51:47Z scribe $
*
* Copyright 1998-2013 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 <fcntl.h>
#include <utilstr.h>
#include <rawstr.h>
#include <rawld.h>
#include <filemgr.h>
#include <stdio.h>
SWORD_NAMESPACE_START
/******************************************************************************
* RawLD Constructor - Initializes data for instance of RawLD
*
* ENT: ipath - path and filename of files (no extension)
* iname - Internal name for module
* idesc - Name to display to user for module
* idisp - Display object to use for displaying
*/
RawLD::RawLD(const char *ipath, const char *iname, const char *idesc, SWDisplay *idisp, SWTextEncoding enc, SWTextDirection dir, SWTextMarkup mark, const char* ilang, bool caseSensitive, bool strongsPadding) : RawStr(ipath, -1, caseSensitive), SWLD(iname, idesc, idisp, enc, dir, mark, ilang, strongsPadding)
{
}
/******************************************************************************
* RawLD Destructor - Cleans up instance of RawLD
*/
RawLD::~RawLD()
{
}
bool RawLD::isWritable() const {
return ((idxfd->getFd() > 0) && ((idxfd->mode & FileMgr::RDWR) == FileMgr::RDWR));
}
/******************************************************************************
* RawLD::getEntry - Looks up entry from data file. 'Snaps' to closest
* entry and sets 'entrybuf'.
*
* ENT: away - number of entries offset from key (default = 0)
*
* RET: error status
*/
char RawLD::getEntry(long away) const
{
__u32 start = 0;
__u16 size = 0;
char *idxbuf = 0;
char retval = 0;
char *buf = new char [ strlen(*key) + 6 ];
strcpy(buf, *key);
if (strongsPadding) strongsPad(buf);
if (!(retval = findOffset(buf, &start, &size, away))) {
readText(start, &size, &idxbuf, entryBuf);
rawFilter(entryBuf, 0); // hack, decipher
rawFilter(entryBuf, key);
entrySize = size; // support getEntrySize call
if (!key->isPersist()) // If we have our own key
*key = idxbuf; // reset it to entry index buffer
stdstr(&entkeytxt, idxbuf); // set entry key text that module 'snapped' to.
delete [] idxbuf;
}
else {
entryBuf = "";
}
delete [] buf;
return retval;
}
/******************************************************************************
* RawLD::getRawEntry - Returns the correct entry when char * cast
* is requested
*
* RET: string buffer with entry
*/
SWBuf &RawLD::getRawEntryBuf() const {
char ret = getEntry();
if (!ret) {
// if (!isUnicode())
prepText(entryBuf);
}
else error = ret;
return entryBuf;
}
/******************************************************************************
* RawLD::increment - Increments module key a number of entries
*
* ENT: increment - Number of entries to jump forward
*
* RET: *this
*/
void RawLD::increment(int steps) {
char tmperror;
if (key->isTraversable()) {
*key += steps;
error = key->popError();
steps = 0;
}
tmperror = (getEntry(steps)) ? KEYERR_OUTOFBOUNDS : 0;
error = (error)?error:tmperror;
*key = entkeytxt;
}
void RawLD::setEntry(const char *inbuf, long len) {
doSetText(*key, inbuf, len);
}
void RawLD::linkEntry(const SWKey *inkey) {
doLinkEntry(*key, *inkey);
}
/******************************************************************************
* RawFiles::deleteEntry - deletes this entry
*
* RET: *this
*/
void RawLD::deleteEntry() {
doSetText(*key, "");
}
long RawLD::getEntryCount() const {
if (idxfd < 0) return 0;
return idxfd->seek(0, SEEK_END) / IDXENTRYSIZE;
}
long RawLD::getEntryForKey(const char *key) const {
__u32 start, offset;
__u16 size;
char *buf = new char [ strlen(key) + 6 ];
strcpy(buf, key);
if (strongsPadding) strongsPad(buf);
findOffset(buf, &start, &size, 0, &offset);
delete [] buf;
return offset / IDXENTRYSIZE;
}
char *RawLD::getKeyForEntry(long entry) const {
char *key = 0;
getIDXBuf(entry * IDXENTRYSIZE, &key);
return key;
}
SWORD_NAMESPACE_END
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