/*********
*
* This file is part of BibleTime's source code, http://www.bibletime.info/.
*
* Copyright 1999-2006 by the BibleTime developers.
* The BibleTime source code is licensed under the GNU General Public License version 2.0.
*
**********/

#if defined(HAVE_CONFIG_H)
#include "config.h"
#endif

//BibleTime includes
#include "cswordmoduleinfo.h"
#include "cswordbackend.h"
#include "cswordmodulesearch.h"
#include "cswordkey.h"
#include "centrydisplay.h"
#include "clanguagemgr.h"

#include "util/scoped_resource.h"
#include "util/directoryutil.h"
#include "util/cpointers.h"
#include "frontend/cbtconfig.h"

#include <sys/types.h>
#include <unistd.h>
#include <stddef.h>
#include <dirent.h>
#include <regex.h>

//TQt includes
#include <tqregexp.h>
#include <tqdir.h>
#include <tqvariant.h>
#include <tqfileinfo.h>

//TDE includes
#include <tdelocale.h>
#include <tdeglobal.h>
#include <kstandarddirs.h>
#include <tdeconfig.h>

//Sword includes
#include <swbuf.h>
#include <swkey.h>
#include <listkey.h>
#include <versekey.h>
#include <swconfig.h>
#include <rtfhtml.h>

//Lucence includes
#include <CLucene.h>
#ifndef CLUCENE_V2
#include <CLucene/util/Reader.h>
#include <CLucene/util/Misc.h>
#include <CLucene/util/dirent.h>
#endif // CLUCENE_V2

//Increment this, if the index format changes
//Then indices on the user's systems will be rebuilt
const unsigned int INDEX_VERSION = 6;

//Maximum index entry size, 1MiB for now
//Lucene default is too small
const unsigned long BT_MAX_LUCENE_FIELD_LENGTH = 1024*1024;

CSwordModuleInfo::CSwordModuleInfo(sword::SWModule * module, CSwordBackend * const usedBackend) {
    m_module = module;
    Q_ASSERT(module);

    m_searchResult.ClearList();
    m_backend = usedBackend ? usedBackend : CPointers::backend();
    m_dataCache.name = module ? TQString(module->Name()) : TQString();
    m_dataCache.isUnicode = module ? module->isUnicode() : false;
    m_dataCache.category = UnknownCategory;
    m_dataCache.language = 0;
    m_dataCache.hasVersion = !TQString((*m_backend->getConfig())[module->Name()]["Version"]).isEmpty();

    if (backend()) {
        if (hasVersion() && (minimumSwordVersion() > sword::SWVersion::currentVersion)) {
            tqWarning("The module \"%s\" requires a newer Sword library. Please update to \"Sword %s\".",
                     name().latin1(), (const char *)minimumSwordVersion());
        }
    }
}

CSwordModuleInfo::CSwordModuleInfo(const CSwordModuleInfo & m) {
    m_module = m.m_module;
    m_backend = m.m_backend;
    m_dataCache = m.m_dataCache;
    m_searchResult = m.m_searchResult;
}

/** No descriptions */
CSwordModuleInfo *CSwordModuleInfo::clone() {
    return new CSwordModuleInfo(*this);
}

CSwordModuleInfo::~CSwordModuleInfo() {
    m_searchResult.ClearList();
    m_module = 0;    //the Sword module object is deleted by the backend
}

/** Sets the unlock key of the modules and writes the key into the cofig file.*/
const bool CSwordModuleInfo::unlock(const TQString & unlockKey) {
    if (!isEncrypted()) {
        return false;
    }

    CBTConfig::setModuleEncryptionKey(name(), unlockKey);
    backend()->setCipherKey(m_module->Name(), unlockKey.latin1());
    //TODO: write to Sword config as well

    return true;
}

/** This function returns true if this module is locked, otherwise return false. */
const bool CSwordModuleInfo::isLocked() {
    //still works, but the cipherkey is stored in CBTConfig.
    //Works because it is set in sword on program startup.

    if (isEncrypted()) {
        if (unlockKeyIsValid()) {
            return false;
        }
        return true;
    }
    return false;
}

/** This functions returns true if this module is encrypted (locked or unlocked). */
const bool CSwordModuleInfo::isEncrypted() const {
    /**
    * If we have the CipherKey entry the module
    * is encrypted but not necessarily locked
    */

    //This code is still right, though we do no longer write to the module config files any more
    sword::ConfigEntMap config = backend()->getConfig()->Sections.find(name().latin1())->second;
    sword::ConfigEntMap::iterator it = config.find("CipherKey");

    if (it != config.end()) {
    return true;
    }

    return false;
}

/** This function makes an estimate if a module was properly unlocked.
 * It returns true if the first entry of the module (parsed as Latin1
 * byte sequence) is not empty and contains only printable characters.
 * If that is the case, we can safely assume that a) the module was properly
 * unlocked and b) no buffer overflows will occur, which can happen when
 * Sword filters process garbage text which was not properly decrypted.
*/
const bool CSwordModuleInfo::unlockKeyIsValid() {

    (*m_module) = sword::TOP;

    // This needs to use ::fromLatin1 because if the text is still locked,
    // a lot of garbage will show up. It will also work with properly decrypted
    // Unicode text, because all non-ASCII Unicode chars consist of bytes >127
    // and therefore contain no control (nonprintable) characters, which are all <127.
    TQString test = isUnicode()
        ? TQString::fromUtf8(m_module->getRawEntryBuf().c_str())
        : TQString::fromLatin1( m_module->getRawEntryBuf().c_str() );

    if (test.isEmpty()) {
        tqWarning("Unlock key of module %s is NOT valid", name().latin1());
        return false;
    }

    for (unsigned int i = 0; i <= test.length(); i++) {
        if ( !test[i].isPrint() && !test[i].isNull() ) {
            tqWarning("Unlock key of module %s is NOT valid", name().latin1());
            return false;
        }
    }

    tqDebug("Unlock key of module %s is valid", name().latin1());
    return true;
}

const TQString CSwordModuleInfo::getGlobalBaseIndexLocation() {
    return TDEGlobal::dirs()->saveLocation("data", "bibletime/indices");
}

const TQString CSwordModuleInfo::getModuleBaseIndexLocation() const {
    return getGlobalBaseIndexLocation() + TQString("/") + name().ascii();
}

const TQString CSwordModuleInfo::getModuleStandardIndexLocation() const { //this for now returns the location of the main index
    return getModuleBaseIndexLocation() + TQString("/standard");
}

const bool CSwordModuleInfo::hasIndex() { //this will return true only
    //if the index exists and has correct version information for both index and module

    TQDir d;
    if (!d.exists( getModuleStandardIndexLocation() )) {
        return false;
    }

    //first check if the index version and module version are ok
    util::scoped_ptr<TDEConfig> indexconfig(
        new TDEConfig( getModuleBaseIndexLocation() + TQString("/bibletime-index.conf") )
    );

    if (hasVersion()) {
        if (indexconfig->readEntry("module-version") != TQString(config(CSwordModuleInfo::ModuleVersion)) ) {
            return false;
        }
    }
    if (indexconfig->readEntry("index-version") != TQString::number( INDEX_VERSION )) {
        tqDebug("%s: INDEX_VERSION is not compatible with this version of BibleTime.", name().latin1());
        return false;
    }

    //then check if the index is there
    return lucene::index::IndexReader::indexExists(getModuleStandardIndexLocation().ascii());
}


void CSwordModuleInfo::buildIndex() {
    wchar_t wcharBuffer[BT_MAX_LUCENE_FIELD_LENGTH + 1];

    //we don't want the linked entries indexed again
    module()->setSkipConsecutiveLinks(true);

    //Without this we don't get strongs, lemmas, etc
    backend()->setFilterOptions ( CBTConfig::getFilterOptionDefaults() );
    //make sure we reset all important filter options which influcence the plain filters.
    backend()->setOption( CSwordModuleInfo::strongNumbers,  false );
    backend()->setOption( CSwordModuleInfo::morphTags,  false );
    backend()->setOption( CSwordModuleInfo::morphSegmentation,  false );
    backend()->setOption( CSwordModuleInfo::footnotes,  false );
    backend()->setOption( CSwordModuleInfo::headings,  false );
    backend()->setOption( CSwordModuleInfo::scriptureReferences,  false );
    backend()->setOption( CSwordModuleInfo::redLetterWords,  false );

    // do not use any stop words
    const TCHAR* stop_words[]  = {
                                     NULL
                                 };
    lucene::analysis::standard::StandardAnalyzer an( stop_words );
    TQString index = getModuleStandardIndexLocation();

    TQDir dir;
    dir.mkdir( getGlobalBaseIndexLocation(), true );
    dir.mkdir( getModuleBaseIndexLocation(), true );
    dir.mkdir( getModuleStandardIndexLocation(), true );


    if (lucene::index::IndexReader::indexExists(index.ascii())) {
        if (lucene::index::IndexReader::isLocked(index.ascii()) ) {
            lucene::index::IndexReader::unlock(index.ascii());
        }
    }

    util::scoped_ptr<lucene::index::IndexWriter> writer( new lucene::index::IndexWriter(index.ascii(), &an, true) ); //always create a new index
    writer->setMaxFieldLength(BT_MAX_LUCENE_FIELD_LENGTH);
    writer->setUseCompoundFile(true); //merge segments into a single file
#ifndef CLUCENE_V2
    writer->setMinMergeDocs(1000);
#endif // CLUCENE_V2

    *m_module = sword::TOP;
    unsigned long verseLowIndex = m_module->Index();
    *m_module = sword::BOTTOM;
    unsigned long verseHighIndex = m_module->Index();

    //verseLowIndex is not 0 in all cases (i.e. NT-only modules)
    unsigned long verseIndex = verseLowIndex + 1;


    const bool isVerseModule = (type() == CSwordModuleInfo::Bible) || (type() == CSwordModuleInfo::Commentary);

    m_indexingProgress.setValue( TQVariant((int)0) );
    m_indexingProgress.activate();

    SWKey* key = m_module->getKey();
    //VerseKey for bibles
    VerseKey* vk = dynamic_cast<VerseKey*>(key);

    if (vk) {
        // we have to be sure to insert the english key into the index, otherwise we'd be in trouble if the language changes
        vk->setLocale("en_US");
        //If we have a verse based module, we want to include the pre-chapter etc. headings in the search
        vk->Headings(1);
    }

    //holds UTF-8 data and is faster than TQString
    TQCString textBuffer;

    // we start with the first module entry, key is automatically updated
    // because key is a pointer to the modules key
    for (*m_module = sword::TOP; !(key->Error()); (*key)++) {

        //If it is a sword-heading, store in buffer and index later in Verse X:1
        if (vk) {
            if (vk->Verse() == 0) {
                //tqWarning("key is %s", key->getText());
		//tqWarning("text is %s", m_module->StripText());
                textBuffer.append( m_module->StripText() );
                continue;
            }
        }

        util::scoped_ptr<lucene::document::Document> doc(new lucene::document::Document());

        //index the key
        lucene_utf8towcs(wcharBuffer, key->getText(), BT_MAX_LUCENE_FIELD_LENGTH);
#ifdef CLUCENE_V2
	lucene::document::Field field1(_T("key"), wcharBuffer, lucene::document::Field::STORE_YES | lucene::document::Field::INDEX_NO);
	doc->add(field1);
#else // CLUCENE_V2
        doc->add(*lucene::document::Field::UnIndexed(_T("key"), wcharBuffer));
#endif // CLUCENE_V2

        // index the main text
        //at this point we have to make sure we disabled the strongs and the other options
        //so the plain filters won't include the numbers somehow.
        lucene_utf8towcs(wcharBuffer, (const char*) textBuffer.append(m_module->StripText()), BT_MAX_LUCENE_FIELD_LENGTH);
#ifdef CLUCENE_V2
	lucene::document::Field field2(_T("key"), wcharBuffer, lucene::document::Field::STORE_NO | lucene::document::Field::INDEX_TOKENIZED);
	doc->add(field2);
#else // CLUCENE_V2
        doc->add(*lucene::document::Field::UnStored(_T("content"), wcharBuffer));
#endif // CLUCENE_V2
        textBuffer.resize(0); //clean up

        // index attributes
        AttributeList::iterator attListI;
        AttributeValue::iterator attValueI;
        // Footnotes
        for (attListI = m_module->getEntryAttributes()["Footnote"].begin();
                attListI != m_module->getEntryAttributes()["Footnote"].end();
                attListI++) {
            lucene_utf8towcs(wcharBuffer, attListI->second["body"], BT_MAX_LUCENE_FIELD_LENGTH);
#ifdef CLUCENE_V2
	    lucene::document::Field field3(_T("footnote"), wcharBuffer, lucene::document::Field::STORE_NO | lucene::document::Field::INDEX_TOKENIZED);
	    doc->add(field3);
#else // CLUCENE_V2
            doc->add(*lucene::document::Field::UnStored(_T("footnote"), wcharBuffer));
#endif // CLUCENE_V2
        } // for attListI

        // Headings
        for (attValueI = m_module->getEntryAttributes()["Heading"]["Preverse"].begin();
                attValueI != m_module->getEntryAttributes()["Heading"]["Preverse"].end();
                attValueI++) {
            lucene_utf8towcs(wcharBuffer, attValueI->second, BT_MAX_LUCENE_FIELD_LENGTH);
#ifdef CLUCENE_V2
	    lucene::document::Field field4(_T("heading"), wcharBuffer, lucene::document::Field::STORE_NO | lucene::document::Field::INDEX_TOKENIZED);
	    doc->add(field4);
#else // CLUCENE_V2
            doc->add(*lucene::document::Field::UnStored(_T("heading"), wcharBuffer));
#endif // CLUCENE_V2
        } // for attValueI

        // Strongs/Morphs
        for (attListI = m_module->getEntryAttributes()["Word"].begin();
                attListI != m_module->getEntryAttributes()["Word"].end();
                attListI++) {
            // for each attribute
            if (attListI->second["LemmaClass"] == "strong") {
                lucene_utf8towcs(wcharBuffer, attListI->second["Lemma"], BT_MAX_LUCENE_FIELD_LENGTH);
#ifdef CLUCENE_V2
		lucene::document::Field field5(_T("strong"), wcharBuffer, lucene::document::Field::STORE_NO | lucene::document::Field::INDEX_TOKENIZED);
		doc->add(field5);
#else // CLUCENE_V2
                doc->add(*lucene::document::Field::UnStored(_T("strong"), wcharBuffer));
#endif // CLUCENE_V2
                //tqWarning("Adding strong %s", attListI->second["Lemma"].c_str());
            }
            if (attListI->second.find("Morph") != attListI->second.end()) {
                lucene_utf8towcs(wcharBuffer, attListI->second["Morph"], BT_MAX_LUCENE_FIELD_LENGTH);
#ifdef CLUCENE_V2
		lucene::document::Field field6(_T("morph"), wcharBuffer, lucene::document::Field::STORE_NO | lucene::document::Field::INDEX_TOKENIZED);
		doc->add(field6);
#else // CLUCENE_V2
                doc->add(*lucene::document::Field::UnStored(_T("morph"), wcharBuffer));
#endif // CLUCENE_V2
            }
        } // for attListI

        writer->addDocument(doc);
        verseIndex = m_module->Index();

        if (verseIndex % 200 == 0) {
            if (verseHighIndex == verseLowIndex) { //prevent division by zero
                m_indexingProgress.setValue( TQVariant(0) );
            } else {
                m_indexingProgress.setValue( TQVariant((int)((100*(verseIndex-verseLowIndex))/(verseHighIndex-verseLowIndex))) );
            }
            m_indexingProgress.activate();
        }
    }

    writer->optimize();
    writer->close();

    TQString configFilename = getModuleStandardIndexLocation() + TQString("/../bibletime-index.conf");
    util::scoped_ptr<TDEConfig> indexconfig( new TDEConfig( configFilename ) );
    if (hasVersion()) {
        indexconfig->writeEntry("module-version", config(CSwordModuleInfo::ModuleVersion) );
    }
    indexconfig->writeEntry("index-version", INDEX_VERSION);
}

void CSwordModuleInfo::deleteIndexForModule( TQString name ) {
    util::filesystem::DirectoryUtil::removeRecursive( getGlobalBaseIndexLocation() + "/" + name );
}

unsigned long CSwordModuleInfo::indexSize() const {
    return util::filesystem::DirectoryUtil::getDirSizeRecursive( getModuleBaseIndexLocation() );
}


const bool CSwordModuleInfo::searchIndexed(const TQString& searchedText, sword::ListKey& scope) {
    char utfBuffer[BT_MAX_LUCENE_FIELD_LENGTH  + 1];
    wchar_t wcharBuffer[BT_MAX_LUCENE_FIELD_LENGTH + 1];

    // work around Swords thread insafety for Bibles and Commentaries
    util::scoped_ptr < CSwordKey > key(CSwordKey::createInstance(this));
    sword::SWKey* s = dynamic_cast < sword::SWKey * >(key.get());
    TQPtrList<VerseKey> list;
    list.setAutoDelete( true ); // the list owns the objects

    const bool isVerseModule = (type() == CSwordModuleInfo::Bible) || (type() == CSwordModuleInfo::Commentary);

    if (s) {
        m_module->SetKey(*s);
    }

    m_searchResult.ClearList();

    try {
        // do not use any stop words
        const TCHAR* stop_words[]  = {
                                         NULL
                                     };
        lucene::analysis::standard::StandardAnalyzer analyzer( stop_words );
        lucene::search::IndexSearcher searcher(getModuleStandardIndexLocation().ascii());
        lucene_utf8towcs(wcharBuffer, searchedText.utf8(), BT_MAX_LUCENE_FIELD_LENGTH);
        util::scoped_ptr<lucene::search::Query> q( lucene::queryParser::QueryParser::parse(wcharBuffer, _T("content"), &analyzer) );

#ifdef CLUCENE_V2
        util::scoped_ptr<lucene::search::Hits> h( searcher.search(q, lucene::search::Sort::INDEXORDER()) );
#else // CLUCENE_V2
	util::scoped_ptr<lucene::search::Hits> h( searcher.search(q, lucene::search::Sort::INDEXORDER) );
#endif // CLUCENE_V2

        const bool useScope = (scope.Count() > 0);
//		const bool isVerseModule = (type() == CSwordModuleInfo::Bible) || (type() == CSwordModuleInfo::Commentary);

        lucene::document::Document* doc = 0;
        util::scoped_ptr<SWKey> swKey( module()->CreateKey() );


#ifdef CLUCENE_V2
	for (unsigned int i = 0; i < h->length(); ++i) {
#else // CLUCENE_V2
        for (int i = 0; i < h->length(); ++i) {
#endif // CLUCENE_V2
            doc = &h->doc(i);
            lucene_wcstoutf8(utfBuffer, doc->get(_T("key")), BT_MAX_LUCENE_FIELD_LENGTH);

            swKey->setText(utfBuffer);

            // limit results based on scope
            //if (searchOptions & CSwordModuleSearch::useScope && scope.Count() > 0){
            if (useScope) {
                for (int j = 0; j < scope.Count(); j++) {
                    VerseKey* vkey = dynamic_cast<VerseKey*>(scope.getElement(j));
                    if (vkey->LowerBound().compare(*swKey) <= 0 && vkey->UpperBound().compare(*swKey) >= 0) {
                        m_searchResult.add(*swKey);
                    }
                }
            } else { // no scope, give me all buffers
                m_searchResult.add(*swKey);
            }
        }
    } catch (...) {
        tqWarning("CLucene exception");
        return false;
    }

    list.clear();

    return (m_searchResult.Count() > 0);
}

void CSwordModuleInfo::connectIndexingFinished(TQObject* receiver, const char* slot) {
    m_indexingFinished.connect(receiver, slot);
}

void CSwordModuleInfo::connectIndexingProgress(TQObject* receiver, const char* slot) {
    m_indexingProgress.connect(receiver, slot);
}

void CSwordModuleInfo::disconnectIndexingSignals(TQObject* receiver) {
    m_indexingProgress.disconnect(receiver);
    m_indexingFinished.disconnect(receiver);
}

/** Returns the last search result for this module. */
sword::ListKey & CSwordModuleInfo::searchResult(const sword::ListKey * newResult) {
    if (newResult) {
        m_searchResult.copyFrom(*newResult);
    }

    return m_searchResult;
}

/** Clears the last search result. */
void CSwordModuleInfo::clearSearchResult() {
    m_searchResult.ClearList();
}

/** Returns the required Sword version for this module. Returns -1 if no special Sword version is required. */
const sword::SWVersion CSwordModuleInfo::minimumSwordVersion() {
    return sword::SWVersion(config(CSwordModuleInfo::MinimumSwordVersion).latin1());
}

const TQString CSwordModuleInfo::config(const CSwordModuleInfo::ConfigEntry entry) const {
    switch (entry) {

    case AboutInformation: {
    return getFormattedConfigEntry("About");
    }

    case CipherKey: {
        if (CBTConfig::getModuleEncryptionKey(name()).isNull()) { //fall back!
            return TQString(m_module->getConfigEntry("CipherKey"));
        } else {
            return CBTConfig::getModuleEncryptionKey(name());
        };
    }

    case AbsoluteDataPath: {
        TQString path( getSimpleConfigEntry("AbsoluteDataPath") );
        path.replace(TQRegExp("/./"), "/"); // make /abs/path/./modules/ looking better
        //make sure we have a trailing slash!

        if (path.right(1) != "/") {
            path.append('/');
        }

        return path;
    }

    case DataPath: { //make sure we remove the dataFile part if it's a Lexicon
        TQString path(getSimpleConfigEntry("DataPath"));

        if ((type() == CSwordModuleInfo::GenericBook) || (type() == CSwordModuleInfo::Lexicon)) {
            int pos = path.findRev("/"); //last slash in the string

            if (pos != -1) {
                path = path.left(pos + 1); //include the slash
            }
        }

        return path;
    }

    case Description:
        return getFormattedConfigEntry("Description");

    case ModuleVersion: {
        TQString version(getSimpleConfigEntry("Version"));

        if (version.isEmpty()) {
            version = "1.0";
        }

        return version;
    }

    case MinimumSwordVersion: {
        const TQString minimumVersion(getSimpleConfigEntry("MinimumVersion"));
        return !minimumVersion.isEmpty()? minimumVersion : TQString("0.0");
    }

    case TextDir: {
        const TQString dir(getSimpleConfigEntry("Direction"));
        return !dir.isEmpty()? dir : TQString("LtoR");
    }

    case DisplayLevel: {
        const TQString level(getSimpleConfigEntry("DisplayLevel"));
        return !level.isEmpty()? level : TQString("1");
    }

    case GlossaryFrom: {
        if (!category() == Glossary) {
            return TQString();
        };

        const TQString lang(getSimpleConfigEntry("GlossaryFrom"));

        return !lang.isEmpty()? lang : TQString();
    }

    case GlossaryTo: {
        if (!category() == Glossary) {
            return TQString();
        };

        const TQString lang(getSimpleConfigEntry("GlossaryTo"));

        return !lang.isEmpty()? lang : TQString();
    }

    case Markup: {
        const TQString markup(getSimpleConfigEntry("SourceType"));
        return !markup.isEmpty()? markup : TQString("Unknown");
    }

    case DistributionLicense:
        return getSimpleConfigEntry("DistributionLicense");

    case DistributionSource:
        return getSimpleConfigEntry("DistributionSource");

    case DistributionNotes:
        return getSimpleConfigEntry("DistributionNotes");

    case TextSource:
        return getSimpleConfigEntry("TextSource");

    case CopyrightNotes:
        return getSimpleConfigEntry("CopyrightNotes");

    case CopyrightHolder:
        return getSimpleConfigEntry("CopyrightHolder");

    case CopyrightDate:
        return getSimpleConfigEntry("CopyrightDate");

    case CopyrightContactName:
        return getSimpleConfigEntry("CopyrightContactName");

    case CopyrightContactAddress:
        return getSimpleConfigEntry("CopyrightContactAddress");

    case CopyrightContactEmail:
        return getSimpleConfigEntry("CopyrightContactEmail");

    default:
        return TQString();
    }
}

/** Returns true if the module supports the feature given as parameter. */
const bool CSwordModuleInfo::has(const CSwordModuleInfo::Feature feature) const {
    switch (feature) {

    // 		case StrongsNumbers:
    // 		return m_module->getConfig().has("Feature", "StrongsNumber");

    case GreekDef:
    return m_module->getConfig().has("Feature", "GreekDef");

    case HebrewDef:
        return m_module->getConfig().has("Feature", "HebrewDef");

    case GreekParse:
        return m_module->getConfig().has("Feature", "GreekParse");

    case HebrewParse:
        return m_module->getConfig().has("Feature", "HebrewParse");
    }

    return false;
}

const bool CSwordModuleInfo::has(const CSwordModuleInfo::FilterTypes option) const {
    //BAD workaround to see if the filter is GBF, OSIS or ThML!
    const TQString name = backend()->configOptionName(option);

    if (m_module->getConfig().has("GlobalOptionFilter", TQString(TQString("OSIS").append(name)).latin1())) {
    return true;
    }

    if (m_module->getConfig().has("GlobalOptionFilter", TQString(TQString("GBF").append(name)).latin1())) {
    return true;
    }

    if (m_module->getConfig().has("GlobalOptionFilter", TQString(TQString("ThML").append(name)).latin1())) {
    return true;
    }

    if (m_module->getConfig().has("GlobalOptionFilter", TQString(TQString("UTF8").append(name)).latin1())) {
    return true;
    }

    if (m_module->getConfig().has("GlobalOptionFilter", name.latin1())) {
    return true;
    }

    return false;
}

/** Returns the text direction of the module's text., */
const CSwordModuleInfo::TextDirection CSwordModuleInfo::textDirection() {
    if (config(TextDir) == "RtoL") {
        return CSwordModuleInfo::RightToLeft;
    } else {
        return CSwordModuleInfo::LeftToRight;
    }
}

/** Writes the new text at the given position into the module. This does only work for writable modules. */
void CSwordModuleInfo::write(CSwordKey * key, const TQString & newText) {
    module()->KeyText((const char *)key->key().utf8());

    //don't store a pointer to the const char* value somewhere because TQCString doesn't keep the value of it
    module()->setEntry(isUnicode()? (const char *)newText.utf8() : (const char *)newText.local8Bit());
}

/** Deletes the current entry and removes it from the module. */
const bool CSwordModuleInfo::deleteEntry(CSwordKey * const key) {
    module()->KeyText(isUnicode()? (const char *)key->key().utf8() : (const char *)key->key().local8Bit());

    if (module()) {
        module()->deleteEntry();
        return true;
    };

    return false;
}

/** Returns the category of this module. See CSwordModuleInfo::Category for possible values. */
const CSwordModuleInfo::Category CSwordModuleInfo::category() const {
    if (m_dataCache.category == CSwordModuleInfo::UnknownCategory) {
    const TQString cat(m_module->getConfigEntry("Category"));

        if (cat == "Cults / Unorthodox / Questionable Material") {
            m_dataCache.category = Cult;
        } else if (cat == "Daily Devotional" || m_module->getConfig().has("Feature", "DailyDevotion")) {
            m_dataCache.category = DailyDevotional;
        } else if (cat == "Glossaries" || m_module->getConfig().has("Feature", "Glossary")) { //alow both
            m_dataCache.category = Glossary;
        };
    }

    return m_dataCache.category;
}

/** Returns the display object for this module. */
Rendering::CEntryDisplay * const CSwordModuleInfo::getDisplay() const {
    return dynamic_cast < Rendering::CEntryDisplay * >(m_module->Disp());
}

TQString CSwordModuleInfo::aboutText() const {
    TQString text;
    text += "<font size=\"-1\"><table>";

    text += TQString("<tr><td><b>%1</b></td><td>%2</td><tr>")
            .arg(i18n("Version"))
            .arg(hasVersion()? config(CSwordModuleInfo::ModuleVersion) : i18n("unknown"));

    text += TQString("<tr><td><b>%1</b></td><td>%2</td></tr>")
            .arg(i18n("Markup"))
            .arg(!TQString(m_module->getConfigEntry("SourceType")).isEmpty()? m_module->
                 getConfigEntry("SourceType") : i18n("unknown").ascii());

    text += TQString("<tr><td><b>%1</b></td><td>%2</td></tr>")
            .arg(i18n("Location"))
            .arg(config(CSwordModuleInfo::AbsoluteDataPath));

    text += TQString("<tr><td><b>%1</b></td><td>%2</td></tr>")
            .arg(i18n("Language"))
            .arg(language()->translatedName());

    if (m_module->getConfigEntry("Category"))
    text += TQString("<tr><td><b>%1</b></td><td>%2</td></tr>")
            .arg(i18n("Category"))
            .arg(m_module->getConfigEntry("Category"));

    if (m_module->getConfigEntry("LCSH"))
        text += TQString("<tr><td><b>%1</b></td><td>%2</td></tr>")
                .arg(i18n("LCSH"))
                .arg(m_module->getConfigEntry("LCSH"));

        text += TQString("<tr><td><b>%1</b></td><td>%2</td></tr>")
                .arg(i18n("Writable"))
                .arg(isWritable()? i18n("yes") : i18n("no"));

        if (isEncrypted())
            text += TQString("<tr><td><b>%1</b></td><td>%2</td></tr>")
                    .arg(i18n("Unlock key"))
                    .arg(config(CSwordModuleInfo::CipherKey));

            TQString options;

            unsigned int opts;

            for (opts = CSwordModuleInfo::filterTypesMIN; opts <= CSwordModuleInfo::filterTypesMAX; ++opts) {
                if (has(static_cast < CSwordModuleInfo::FilterTypes > (opts))) {
                        if (!options.isEmpty()) {
                            options += TQString::fromLatin1(", ");
                        }

                        options += CSwordBackend::translatedOptionName(static_cast < CSwordModuleInfo::FilterTypes > (opts));
                    }
                }

    if (!options.isEmpty()) {
    text += TQString("<tr><td><b>%1</b></td><td>%2</td></tr>")
                .arg(i18n("Features"))
                .arg(options);
    }

    text += "</table><hr>";

    if (category() == Cult) //clearly say the module contains cult/questionable materials
    text += TQString("<br/><b>%1</b><br/><br/>")
            .arg(i18n("Take care, this work contains cult / questionable material!"));

    text += TQString("<b>%1:</b><br><font size=\"-1\">%2</font>")
            .arg(i18n("About"))
            .arg(config(AboutInformation));

    typedef TQValueList<CSwordModuleInfo::ConfigEntry> ListConfigEntry;

    ListConfigEntry entries;

    entries.append(DistributionLicense);

    entries.append(DistributionSource);

    entries.append(DistributionNotes);

    entries.append(TextSource);

    entries.append(CopyrightNotes);

    entries.append(CopyrightHolder);

    entries.append(CopyrightDate);

    entries.append(CopyrightContactName);

    entries.append(CopyrightContactAddress);

    entries.append(CopyrightContactEmail);

    typedef TQMap<CSwordModuleInfo::ConfigEntry, TQString> MapConfigEntry;

    MapConfigEntry entryMap;

    entryMap[DistributionLicense] = i18n("Distribution license");

    entryMap[DistributionSource] = i18n("Distribution source");

    entryMap[DistributionNotes] = i18n("Distribution notes");

    entryMap[TextSource] = i18n("Text source");

    entryMap[CopyrightNotes] = i18n("Copyright notes");

    entryMap[CopyrightHolder] = i18n("Copyright holder");

    entryMap[CopyrightDate] = i18n("Copyright date");

    entryMap[CopyrightContactName] = i18n("Copyright contact name");

    entryMap[CopyrightContactAddress] = i18n("Copyright contact address");

    entryMap[CopyrightContactEmail] = i18n("Copyright contact email");

    text += ("<hr><table>");

    for (ListConfigEntry::iterator it(entries.begin()); it != entries.end(); ++it) {
        TQString t( config(*it) );

            if (!t.isEmpty()) {
                text += TQString("<tr><td><b>%1</b></td><td>%2</td></tr>")
                        .arg(entryMap[*it])
                        .arg(config(*it));
            }

        }


    text += "</table></font>";

    return text;
}

/** Returns the language of the module. */
const CLanguageMgr::Language * const CSwordModuleInfo::language() const {
    if (!m_dataCache.language) {
    if (module()) {
            if (category() == Glossary) {
                //special handling for glossaries, we use the "from language" as language for the module
                m_dataCache.language = (CPointers::languageMgr())->languageForAbbrev(config(GlossaryFrom));
            } else {
                m_dataCache.language = (CPointers::languageMgr())->languageForAbbrev(module()->Lang());
            }
        } else {
            m_dataCache.language = (CPointers::languageMgr())->defaultLanguage(); //default language
        }
    }

    return m_dataCache.language;
}


/*!
    \fn CSwordModuleInfo::getSimpleConfigEntry(char* name)
 */
TQString CSwordModuleInfo::getSimpleConfigEntry(const TQString& name) const {
    TQString ret = isUnicode()
                  ? TQString::fromUtf8(m_module->getConfigEntry(name.latin1()))
                  : TQString::fromLatin1(m_module->getConfigEntry(name.latin1()));

    return ret.isEmpty() ? TQString() : ret;
}

TQString CSwordModuleInfo::getFormattedConfigEntry(const TQString& name) const {
    SWBuf RTF_Buffer(m_module->getConfigEntry(name.latin1()));
    sword::RTFHTML RTF_Filter;
    RTF_Filter.processText(RTF_Buffer, 0, 0);
    TQString ret = isUnicode()
                  ? TQString::fromUtf8(RTF_Buffer.c_str())
                  : TQString::fromLatin1(RTF_Buffer.c_str());

    return ret.isEmpty() ? TQString() : ret;
}