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globals.cpp

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00001 /*
00002  * Copyright (C) 2008  Zack Rusin <zack@kde.org>
00003  *
00004  * This library is free software; you can redistribute it and/or
00005  * modify it under the terms of the GNU Lesser General Public
00006  * License as published by the Free Software Foundation; either
00007  * version 2.1 of the License, or (at your option) any later version.
00008  *
00009  * This library is distributed in the hope that it will be useful,
00010  * but WITHOUT ANY WARRANTY; without even the implied warranty of
00011  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00012  * Lesser General Public License for more details.
00013  *
00014  * You should have received a copy of the GNU Lesser General Public
00015  * License along with this library; if not, write to the Free Software
00016  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
00017  * 02110-1301  USA
00018  */
00019 #include "globals.h"
00020 
00021 #include "speller.h"
00022 #include "filter_p.h"
00023 #include "loader_p.h"
00024 #include "settings_p.h"
00025 
00026 #include <kconfig.h>
00027 
00028 #include <QMap>
00029 #include <QVector>
00030 #include <QSet>
00031 #include <QDebug>
00032 
00033 #include <memory>
00034 
00035 namespace Sonnet {
00036 /* a very silly implementation: uses all available dictionaries
00037  * to check the text, the one with the least amount of misspelling
00038  * is likely the language we're looking for. (unless of course
00039  * someone is a real terrible speller).
00040  */
00041 QString detectLanguage(const QString &sentence)
00042 {
00043     Speller speller;
00044     QMap<QString, QString> dicts = speller.availableDictionaries();
00045     QMap<QString, int> correctHits;
00046     QSet<QString> seenLangs;
00047     {
00048         QMap<QString, QString>::const_iterator itr = dicts.constBegin();
00049         for (int i = 0; i < dicts.count(); ++i) {
00050             seenLangs.insert(itr.value());
00051             ++itr;
00052         }
00053     }
00054 
00055     QVector<Speller> spellers(seenLangs.count());
00056     {
00057         QSet<QString>::const_iterator itr = seenLangs.constBegin();
00058         for (int i = 0; i < spellers.count(); ++i) {
00059             spellers[i].setLanguage(*itr);
00060             ++itr;
00061         }
00062     }
00063 
00064     Filter f;
00065     f.setBuffer(sentence);
00066     while (!f.atEnd()) {
00067         Word word = f.nextWord();
00068 
00069         if (!word.word.isEmpty()) {
00070             for (int i = 0; i < spellers.count(); ++i) {
00071                 if (spellers[i].isCorrect(word.word))
00072                     correctHits[spellers[i].language()] += 1;
00073             }
00074         }
00075     }
00076 
00077     QMap<QString, int>::const_iterator max = correctHits.constBegin();
00078     for (QMap<QString, int>::const_iterator itr = correctHits.constBegin();
00079          itr != correctHits.constEnd(); ++itr) {
00080         if (itr.value() > max.value())
00081             max = itr;
00082     }
00083     return max.key();
00084 }
00085 
00086 QString defaultLanguageName()
00087 {
00088   Loader *loader = Loader::openLoader();
00089   std::auto_ptr<KConfig> config(new KConfig("sonnetrc"));
00090   loader->settings()->restore(config.get());
00091 
00092   return loader->languageNameForCode(loader->settings()->defaultLanguage());
00093 }
00094 
00095 }

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