pimcommon/src/translator/googletranslator.cpp

   1 /*
   2   Copyright (c) 2012-2015 Montel Laurent <montel@kde.org>
   3
   4   This program is free software; you can redistribute it and/or modify it
   5   under the terms of the GNU General Public License, version 2, as
   6   published by the Free Software Foundation.
   7
   8   This program is distributed in the hope that it will be useful, but
   9   WITHOUT ANY WARRANTY; without even the implied warranty of
  10   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  11   General Public License for more details.
  12
  13   You should have received a copy of the GNU General Public License along
  14   with this program; if not, write to the Free Software Foundation, Inc.,
  15   51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
  16 */
  17
  18 #include "googletranslator.h"
  19 #include "translatorutil.h"
  20 #include "translatordebugdialog.h"
  21
  22 #include "pimcommon_debug.h"
  23 #include <QJsonParseError>
  24 #include <QNetworkAccessManager>
  25 #include <QNetworkRequest>
  26 #include <QPointer>
  27
  28 using namespace PimCommon;
  29
  30 GoogleTranslator::GoogleTranslator(QObject *parent)
  31     : QObject(parent),
  32       mNetworkAccessManager(new QNetworkAccessManager(this))
  33 {
  34     connect(mNetworkAccessManager, &QNetworkAccessManager::finished, this, &GoogleTranslator::slotTranslateFinished);
  35 }
  36
  37 GoogleTranslator::~GoogleTranslator()
  38 {
  39 }
  40
  41 void GoogleTranslator::setInputText(const QString &text)
  42 {
  43     mInputText = text;
  44 }
  45
  46 void GoogleTranslator::setFrom(const QString &language)
  47 {
  48     mFrom = language;
  49 }
  50
  51 void GoogleTranslator::setTo(const QString &language)
  52 {
  53     mTo = language;
  54 }
  55
  56 QString GoogleTranslator::resultTranslate() const
  57 {
  58     return mResult;
  59 }
  60
  61 QMap<QString, QMap<QString, QString> > GoogleTranslator::initListLanguage(KComboBox *from)
  62 {
  63     QMap<QString, QMap<QString, QString> > listLanguage;
  64
  65     TranslatorUtil translatorUtil;
  66     QList<QPair<QString, QString> > fullListLanguage;
  67     fullListLanguage.append(translatorUtil.pair(TranslatorUtil::automatic));
  68     fullListLanguage.append(translatorUtil.pair(TranslatorUtil::en));
  69     fullListLanguage.append(translatorUtil.pair(TranslatorUtil::nl));
  70     fullListLanguage.append(translatorUtil.pair(TranslatorUtil::fr));
  71     fullListLanguage.append(translatorUtil.pair(TranslatorUtil::de));
  72     fullListLanguage.append(translatorUtil.pair(TranslatorUtil::el));
  73     fullListLanguage.append(translatorUtil.pair(TranslatorUtil::it));
  74     fullListLanguage.append(translatorUtil.pair(TranslatorUtil::ja));
  75     fullListLanguage.append(translatorUtil.pair(TranslatorUtil::ko));
  76     fullListLanguage.append(translatorUtil.pair(TranslatorUtil::pt));
  77     fullListLanguage.append(translatorUtil.pair(TranslatorUtil::ru));
  78     fullListLanguage.append(translatorUtil.pair(TranslatorUtil::es));
  79
  80     fullListLanguage.append(translatorUtil.pair(TranslatorUtil::af));
  81     fullListLanguage.append(translatorUtil.pair(TranslatorUtil::sq));
  82     fullListLanguage.append(translatorUtil.pair(TranslatorUtil::ar));
  83     fullListLanguage.append(translatorUtil.pair(TranslatorUtil::hy));
  84     fullListLanguage.append(translatorUtil.pair(TranslatorUtil::az));
  85     fullListLanguage.append(translatorUtil.pair(TranslatorUtil::eu));
  86     fullListLanguage.append(translatorUtil.pair(TranslatorUtil::be));
  87     fullListLanguage.append(translatorUtil.pair(TranslatorUtil::bg));
  88     fullListLanguage.append(translatorUtil.pair(TranslatorUtil::ca));
  89     fullListLanguage.append(translatorUtil.pair(TranslatorUtil::zh_cn_google)); // For google only
  90     fullListLanguage.append(translatorUtil.pair(TranslatorUtil::zh_tw_google)); // For google only
  91     fullListLanguage.append(translatorUtil.pair(TranslatorUtil::hr));
  92     fullListLanguage.append(translatorUtil.pair(TranslatorUtil::cs));
  93     fullListLanguage.append(translatorUtil.pair(TranslatorUtil::da));
  94     fullListLanguage.append(translatorUtil.pair(TranslatorUtil::et));
  95     fullListLanguage.append(translatorUtil.pair(TranslatorUtil::tl));
  96     fullListLanguage.append(translatorUtil.pair(TranslatorUtil::fi));
  97     fullListLanguage.append(translatorUtil.pair(TranslatorUtil::gl));
  98     fullListLanguage.append(translatorUtil.pair(TranslatorUtil::ka));
  99     fullListLanguage.append(translatorUtil.pair(TranslatorUtil::ht));
 100     fullListLanguage.append(translatorUtil.pair(TranslatorUtil::iw));
 101     fullListLanguage.append(translatorUtil.pair(TranslatorUtil::hi));
 102     fullListLanguage.append(translatorUtil.pair(TranslatorUtil::hu));
 103     fullListLanguage.append(translatorUtil.pair(TranslatorUtil::is));
 104     fullListLanguage.append(translatorUtil.pair(TranslatorUtil::id));
 105     fullListLanguage.append(translatorUtil.pair(TranslatorUtil::ga));
 106     fullListLanguage.append(translatorUtil.pair(TranslatorUtil::lv));
 107     fullListLanguage.append(translatorUtil.pair(TranslatorUtil::lt));
 108     fullListLanguage.append(translatorUtil.pair(TranslatorUtil::mk));
 109     fullListLanguage.append(translatorUtil.pair(TranslatorUtil::ms));
 110     fullListLanguage.append(translatorUtil.pair(TranslatorUtil::mt));
 111     fullListLanguage.append(translatorUtil.pair(TranslatorUtil::no));
 112     fullListLanguage.append(translatorUtil.pair(TranslatorUtil::fa));
 113     fullListLanguage.append(translatorUtil.pair(TranslatorUtil::pl));
 114     fullListLanguage.append(translatorUtil.pair(TranslatorUtil::ro));
 115     fullListLanguage.append(translatorUtil.pair(TranslatorUtil::sr));
 116     fullListLanguage.append(translatorUtil.pair(TranslatorUtil::sk));
 117     fullListLanguage.append(translatorUtil.pair(TranslatorUtil::sl));
 118     fullListLanguage.append(translatorUtil.pair(TranslatorUtil::sw));
 119     fullListLanguage.append(translatorUtil.pair(TranslatorUtil::sv));
 120     fullListLanguage.append(translatorUtil.pair(TranslatorUtil::th));
 121     fullListLanguage.append(translatorUtil.pair(TranslatorUtil::tr));
 122     fullListLanguage.append(translatorUtil.pair(TranslatorUtil::uk));
 123     fullListLanguage.append(translatorUtil.pair(TranslatorUtil::ur));
 124     fullListLanguage.append(translatorUtil.pair(TranslatorUtil::vi));
 125     fullListLanguage.append(translatorUtil.pair(TranslatorUtil::cy));
 126     fullListLanguage.append(translatorUtil.pair(TranslatorUtil::yi));
 127     const int fullListLanguageSize(fullListLanguage.count());
 128     for (int i = 0; i < fullListLanguageSize; ++i) {
 129         const QPair<QString, QString> currentLanguage = fullListLanguage.at(i);
 130         translatorUtil.addItemToFromComboBox(from, currentLanguage);
 131
 132         QMap<QString, QString> toList;
 133         for (int j = 0; j < fullListLanguageSize; ++j) {
 134             if (j != 0 && j != i) { //don't add auto and current language
 135                 translatorUtil.addPairToMap(toList, fullListLanguage.at(j));
 136             }
 137         }
 138         listLanguage.insert(currentLanguage.second, toList);
 139     }
 140
 141     return listLanguage;
 142 }
 143
 144 void GoogleTranslator::translate()
 145 {
 146     if (mFrom == mTo) {
 147         Q_EMIT translateFailed(false, i18n("You used same language for from and to language."));
 148         return;
 149     }
 150
 151     mResult.clear();
 152
 153     QUrlQuery urlQuery;
 154     urlQuery.addQueryItem(QStringLiteral("client"), QStringLiteral("gtx"));
 155     urlQuery.addQueryItem(QStringLiteral("sl"), mFrom);
 156     urlQuery.addQueryItem(QStringLiteral("tl"), mTo);
 157     urlQuery.addQueryItem(QStringLiteral("dt"), QStringLiteral("t"));
 158     urlQuery.addQueryItem(QStringLiteral("q"), mInputText);
 159
 160     QUrl url;
 161     url.setQuery(urlQuery);
 162     url.setScheme(QStringLiteral("http"));
 163     url.setHost(QStringLiteral("translate.googleapis.com"));
 164     url.setPath(QStringLiteral("/translate_a/single"));
 165     const QNetworkRequest request(url);
 166
 167     QNetworkReply *reply = mNetworkAccessManager->get(request);
 168     connect(reply, static_cast<void (QNetworkReply::*)(QNetworkReply::NetworkError)>(&QNetworkReply::error), this, &GoogleTranslator::slotError);
 169 }
 170
 171 void GoogleTranslator::slotError(QNetworkReply::NetworkError /*error*/)
 172 {
 173     Q_EMIT translateFailed(false);
 174 }
 175
 176 void GoogleTranslator::slotTranslateFinished(QNetworkReply *reply)
 177 {
 178
 179     mJsonData = QString::fromUtf8(reply->readAll());
 180     reply->deleteLater();
 181     //  jsonData contains arrays like this: ["foo",,"bar"]
 182     //  but this is not valid JSON for QJSON, it expects empty strings: ["foo","","bar"]
 183     mJsonData = mJsonData.replace(QRegExp(QLatin1String(",{3,3}")), QStringLiteral(",\"\",\"\","));
 184     mJsonData = mJsonData.replace(QRegExp(QLatin1String(",{2,2}")), QStringLiteral(",\"\","));
 185     //qCDebug(PIMCOMMON_LOG) << mJsonData;
 186
 187     QJsonParseError parsingError;
 188     const QJsonDocument jsonDoc = QJsonDocument::fromJson(mJsonData.toUtf8(), &parsingError);
 189     if (parsingError.error != QJsonParseError::NoError || jsonDoc.isNull()) {
 190         Q_EMIT translateFailed(false);
 191         return;
 192     }
 193     const QVariantList json = jsonDoc.toVariant().toList();
 194 #if !defined(NDEBUG)
 195     mJsonDebug = QString::fromUtf8(jsonDoc.toJson(QJsonDocument::Indented));
 196 #endif
 197     Q_FOREACH (const QVariant &level0, json) {
 198         const QVariantList listLevel0 = level0.toList();
 199         if (listLevel0.isEmpty()) {
 200             continue;
 201         }
 202         Q_FOREACH (const QVariant &level1, listLevel0) {
 203             if (level1.toList().size() <= 2) {
 204                 continue;
 205             }
 206             mResult += level1.toList().at(0).toString();
 207         }
 208     }
 209     Q_EMIT translateDone();
 210 }
 211
 212 void GoogleTranslator::debug()
 213 {
 214 #if !defined(NDEBUG)
 215     QPointer<TranslatorDebugDialog> dlg = new TranslatorDebugDialog;
 216     dlg->setDebug(mJsonData);
 217     dlg->exec();
 218     delete dlg;
 219 #endif
 220 }
 221
 222 void GoogleTranslator::clear()
 223 {
 224     mJsonData.clear();
 225 }