File indexing completed on 2024-04-28 07:50:09

 /*
  * backgroundchecker.cpp
  *
  * SPDX-FileCopyrightText: 2004 Zack Rusin <zack@kde.org>
  * SPDX-FileCopyrightText: 2009 Jakub Stachowski <qbast@go2.pl>
  *
  * SPDX-License-Identifier: LGPL-2.1-or-later
  */
 #include "backgroundchecker.h"
 #include "backgroundchecker_p.h"
 
 #include "core_debug.h"
 
 using namespace Sonnet;
 
 void BackgroundCheckerPrivate::start()
 {
     sentenceOffset = -1;
     continueChecking();
 }
 
 void BackgroundCheckerPrivate::continueChecking()
 {
     metaObject()->invokeMethod(this, "checkNext", Qt::QueuedConnection);
 }
 
 void BackgroundCheckerPrivate::checkNext()
 {
     do {
         // go over current sentence
         while (sentenceOffset != -1 && words.hasNext()) {
             Token word = words.next();
             if (!words.isSpellcheckable()) {
                 continue;
             }
 
             // ok, this is valid word, do something
             if (currentDict.isMisspelled(word.toString())) {
                 lastMisspelled = word;
                 Q_EMIT misspelling(word.toString(), word.position() + sentenceOffset);
                 return;
             }
         }
         // current sentence done, grab next suitable
 
         sentenceOffset = -1;
         const bool autodetectLanguage = currentDict.testAttribute(Speller::AutoDetectLanguage);
         const bool ignoreUpperCase = !currentDict.testAttribute(Speller::CheckUppercase);
         while (mainTokenizer.hasNext()) {
             Token sentence = mainTokenizer.next();
             if (autodetectLanguage && !autoDetectLanguageDisabled) {
                 if (!mainTokenizer.isSpellcheckable()) {
                     continue;
                 }
                 // FIXME: find best from family en -> en_US, en_GB, ... ?
                 currentDict.setLanguage(mainTokenizer.language());
             }
             sentenceOffset = sentence.position();
             words.setBuffer(sentence.toString());
             words.setIgnoreUppercase(ignoreUpperCase);
             break;
         }
     } while (sentenceOffset != -1);
     Q_EMIT done();
 }
 
 BackgroundChecker::BackgroundChecker(QObject *parent)
     : QObject(parent)
     , d(new BackgroundCheckerPrivate)
 {
     connect(d.get(), &BackgroundCheckerPrivate::misspelling, this, &BackgroundChecker::misspelling);
     connect(d.get(), &BackgroundCheckerPrivate::done, this, &BackgroundChecker::slotEngineDone);
 }
 
 BackgroundChecker::BackgroundChecker(const Speller &speller, QObject *parent)
     : QObject(parent)
     , d(new BackgroundCheckerPrivate)
 {
     d->currentDict = speller;
     connect(d.get(), &BackgroundCheckerPrivate::misspelling, this, &BackgroundChecker::misspelling);
     connect(d.get(), &BackgroundCheckerPrivate::done, this, &BackgroundChecker::slotEngineDone);
 }
 
 BackgroundChecker::~BackgroundChecker() = default;
 
 void BackgroundChecker::setText(const QString &text)
 {
     d->mainTokenizer.setBuffer(text);
     d->start();
 }
 
 void BackgroundChecker::start()
 {
     // ## what if d->currentText.isEmpty()?
 
     // TODO: carry state from last buffer
     d->mainTokenizer.setBuffer(fetchMoreText());
     d->start();
 }
 
 void BackgroundChecker::stop()
 {
     //    d->stop();
 }
 
 QString BackgroundChecker::fetchMoreText()
 {
     return QString();
 }
 
 void BackgroundChecker::finishedCurrentFeed()
 {
 }
 
 bool BackgroundChecker::autoDetectLanguageDisabled() const
 {
     return d->autoDetectLanguageDisabled;
 }
 
 void BackgroundChecker::setAutoDetectLanguageDisabled(bool autoDetectDisabled)
 {
     d->autoDetectLanguageDisabled = autoDetectDisabled;
 }
 
 void BackgroundChecker::setSpeller(const Speller &speller)
 {
     d->currentDict = speller;
 }
 
 Speller BackgroundChecker::speller() const
 {
     return d->currentDict;
 }
 
 bool BackgroundChecker::checkWord(const QString &word)
 {
     return d->currentDict.isCorrect(word);
 }
 
 bool BackgroundChecker::addWordToPersonal(const QString &word)
 {
     return d->currentDict.addToPersonal(word);
 }
 
 bool BackgroundChecker::addWordToSession(const QString &word)
 {
     return d->currentDict.addToSession(word);
 }
 
 QStringList BackgroundChecker::suggest(const QString &word) const
 {
     return d->currentDict.suggest(word);
 }
 
 void BackgroundChecker::changeLanguage(const QString &lang)
 {
     // this sets language only for current sentence
     d->currentDict.setLanguage(lang);
 }
 
 void BackgroundChecker::continueChecking()
 {
     d->continueChecking();
 }
 
 void BackgroundChecker::slotEngineDone()
 {
     finishedCurrentFeed();
     const QString currentText = fetchMoreText();
 
     if (currentText.isNull()) {
         Q_EMIT done();
     } else {
         d->mainTokenizer.setBuffer(currentText);
         d->start();
     }
 }
 
 QString BackgroundChecker::text() const
 {
     return d->mainTokenizer.buffer();
 }
 
 QString BackgroundChecker::currentContext() const
 {
     int len = 60;
     // we don't want the expression underneath casted to an unsigned int
     // which would cause it to always evaluate to false
     int currentPosition = d->lastMisspelled.position() + d->sentenceOffset;
     bool begin = ((currentPosition - len / 2) <= 0) ? true : false;
 
     QString buffer = d->mainTokenizer.buffer();
     buffer.replace(currentPosition, d->lastMisspelled.length(), QStringLiteral("<b>%1</b>").arg(d->lastMisspelled.toString()));
 
     QString context;
     if (begin) {
         context = QStringLiteral("%1...").arg(buffer.mid(0, len));
     } else {
         context = QStringLiteral("...%1...").arg(buffer.mid(currentPosition - 20, len));
     }
 
     context.replace(QLatin1Char('\n'), QLatin1Char(' '));
 
     return context;
 }
 
 void Sonnet::BackgroundChecker::replace(int start, const QString &oldText, const QString &newText)
 {
     // FIXME: here we assume that replacement is in current fragment. So 'words' has
     // to be adjusted and sentenceOffset does not
     d->words.replace(start - (d->sentenceOffset), oldText.length(), newText);
     d->mainTokenizer.replace(start, oldText.length(), newText);
 }
 
 #include "moc_backgroundchecker.cpp"
 #include "moc_backgroundchecker_p.cpp"