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#include "translator.h"

#include "simtexth.h"

#include <stdio.h>

#include <QtCore/QDebug>

#include <QtCore/QDir>

#include <QtCore/QFile>

#include <QtCore/QFileInfo>

#include <QtCore/QTextCodec>

#include <QtCore/QTextStream>

#include <private/qtranslator_p.h>

QT_BEGIN_NAMESPACE

#ifdef QT_BOOTSTRAPPED

QString QObject::tr(const char *sourceText, const char *, int n)

{

    QString ret = QString::fromLatin1(sourceText);

    if (n >= 0)

        ret.replace(QLatin1String("%n"), QString::number(n));

    return ret;

}

#endif

Translator::Translator() :

    m_codec(QTextCodec::codecForName("ISO-8859-1")),

    m_locationsType(AbsoluteLocations)

{

}

void Translator::registerFileFormat(const FileFormat &format)

{

    //qDebug() << "Translator: Registering format " << format.extension;

    QList<Translator::FileFormat> &formats = registeredFileFormats();

    for (int i = 0; i < formats.size(); ++i)

        if (format.fileType == formats[i].fileType && format.priority < formats[i].priority) {

            formats.insert(i, format);

            return;

        }

    formats.append(format);

}

QList<Translator::FileFormat> &Translator::registeredFileFormats()

{

    static QList<Translator::FileFormat> theFormats;

    return theFormats;

}

void Translator::replaceSorted(const TranslatorMessage &msg)

{

    int index = find(msg);

    if (index == -1)

        appendSorted(msg);

    else

        m_messages[index] = msg;

}

void Translator::extend(const TranslatorMessage &msg)

{

    int index = find(msg);

    if (index == -1) {

        m_messages.append(msg);

    } else {

        TranslatorMessage &emsg = m_messages[index];

        emsg.addReferenceUniq(msg.fileName(), msg.lineNumber());

        if (!msg.extraComment().isEmpty()) {

            QString cmt = emsg.extraComment();

            if (!cmt.isEmpty())

                cmt.append(QLatin1String("\n----------\n"));

            cmt.append(msg.extraComment());

            emsg.setExtraComment(cmt);

        }

        if (msg.isUtf8() != emsg.isUtf8()) {

            emsg.setUtf8(true);

            emsg.setNonUtf8(true);

        }

    }

}

void Translator::append(const TranslatorMessage &msg)

{

    m_messages.append(msg);

}

void Translator::appendSorted(const TranslatorMessage &msg)

{

    int msgLine = msg.lineNumber();

    if (msgLine < 0) {

        m_messages.append(msg);

        return;

    }

    int bestIdx = 0; // Best insertion point found so far

    int bestScore = 0; // Its category: 0 = no hit, 1 = pre or post, 2 = middle

    int bestSize = 0; // The length of the region. Longer is better within one category.

    // The insertion point to use should this region turn out to be the best one so far

    int thisIdx = 0;

    int thisScore = 0;

    int thisSize = 0;

    // Working vars

    int prevLine = 0;

    int curIdx = 0;

    foreach (const TranslatorMessage &mit, m_messages) {

        bool sameFile = mit.fileName() == msg.fileName() && mit.context() == msg.context();

        int curLine;

        if (sameFile && (curLine = mit.lineNumber()) >= prevLine) {

            if (msgLine >= prevLine && msgLine < curLine) {

                thisIdx = curIdx;

                thisScore = thisSize ? 2 : 1;

            }

            ++thisSize;

            prevLine = curLine;

        } else {

            if (thisSize) {

                if (!thisScore) {

                    thisIdx = curIdx;

                    thisScore = 1;

                }

                if (thisScore > bestScore || (thisScore == bestScore && thisSize > bestSize)) {

                    bestIdx = thisIdx;

                    bestScore = thisScore;

                    bestSize = thisSize;

                }

                thisScore = 0;

                thisSize = sameFile ? 1 : 0;

                prevLine = 0;

            }

        }

        ++curIdx;

    }

    if (thisSize && !thisScore) {

        thisIdx = curIdx;

        thisScore = 1;

    }

    if (thisScore > bestScore || (thisScore == bestScore && thisSize > bestSize))

        m_messages.insert(thisIdx, msg);

    else if (bestScore)

        m_messages.insert(bestIdx, msg);

    else

        m_messages.append(msg);

}

static QString guessFormat(const QString &filename, const QString &format)

{

    if (format != QLatin1String("auto"))

        return format;

    foreach (const Translator::FileFormat &fmt, Translator::registeredFileFormats()) {

        if (filename.endsWith(QLatin1Char('.') + fmt.extension, Qt::CaseInsensitive))

            return fmt.extension;

    }

    // the default format.

    // FIXME: change to something more widely distributed later.

    return QLatin1String("ts");

}

bool Translator::load(const QString &filename, ConversionData &cd, const QString &format)

{

    cd.m_sourceDir = QFileInfo(filename).absoluteDir();

    cd.m_sourceFileName = filename;

    QFile file;

    if (filename.isEmpty() || filename == QLatin1String("-")) {

        if (!file.open(stdin, QIODevice::ReadOnly)) {

            cd.appendError(QString::fromLatin1("Cannot open stdin!? (%1)")

                .arg(file.errorString()));

            return false;

        }

    } else {

        file.setFileName(filename);

        if (!file.open(QIODevice::ReadOnly)) {

            cd.appendError(QString::fromLatin1("Cannot open %1: %2")

                .arg(filename, file.errorString()));

            return false;

        }

    }

    QString fmt = guessFormat(filename, format);

    foreach (const FileFormat &format, registeredFileFormats()) {

        if (fmt == format.extension) {

            if (format.loader)

                return (*format.loader)(*this, file, cd);

            cd.appendError(QString(QLatin1String("No loader for format %1 found"))

                .arg(fmt));

            return false;

        }

    }

    cd.appendError(QString(QLatin1String("Unknown format %1 for file %2"))

        .arg(format, filename));

    return false;

}

bool Translator::save(const QString &filename, ConversionData &cd, const QString &format) const

{

    QFile file;

    if (filename.isEmpty() || filename == QLatin1String("-")) {

        if (!file.open(stdout, QIODevice::WriteOnly)) {

            cd.appendError(QString::fromLatin1("Cannot open stdout!? (%1)")

                .arg(file.errorString()));

            return false;

        }

    } else {

        file.setFileName(filename);

        if (!file.open(QIODevice::WriteOnly)) {

            cd.appendError(QString::fromLatin1("Cannot create %1: %2")

                .arg(filename, file.errorString()));

            return false;

        }

    }

    QString fmt = guessFormat(filename, format);

    cd.m_targetDir = QFileInfo(filename).absoluteDir();

    foreach (const FileFormat &format, registeredFileFormats()) {

        if (fmt == format.extension) {

            if (format.saver)

                return (*format.saver)(*this, file, cd);

            cd.appendError(QString(QLatin1String("Cannot save %1 files")).arg(fmt));

            return false;

        }

    }

    cd.appendError(QString(QLatin1String("Unknown format %1 for file %2"))

        .arg(format).arg(filename));

    return false;

}

QString Translator::makeLanguageCode(QLocale::Language language, QLocale::Country country)

{

    QLocale locale(language, country);

    if (country == QLocale::AnyCountry) {

        QString languageCode = locale.name().section(QLatin1Char('_'), 0, 0);

        if (languageCode.length() <= 3)

            return languageCode;

        return QString();

    } else {

        return locale.name();

    }

}

void Translator::languageAndCountry(const QString &languageCode,

    QLocale::Language *lang, QLocale::Country *country)

{

    QLocale locale(languageCode);

    if (lang)

        *lang = locale.language();

    if (country) {

        if (languageCode.indexOf(QLatin1Char('_')) != -1)

            *country = locale.country();

        else

            *country = QLocale::AnyCountry;

    }

}

bool Translator::release(QFile *iod, ConversionData &cd) const

{

    foreach (const FileFormat &format, registeredFileFormats()) {

        if (format.extension == QLatin1String("qm"))

            return (*format.saver)(*this, *iod, cd);

    }

    cd.appendError(QLatin1String("No .qm saver available."));

    return false;

}

int Translator::find(const TranslatorMessage &msg) const

{

    for (int i = 0; i < m_messages.count(); ++i) {

        const TranslatorMessage &tmsg = m_messages.at(i);

        if (msg.id().isEmpty() || tmsg.id().isEmpty()) {

            if (msg.context() == tmsg.context()

                && msg.sourceText() == tmsg.sourceText()

                && msg.comment() == tmsg.comment())

                return i;

        } else {

            if (msg.id() == tmsg.id())

                return i;

        }

    }

    return -1;

}

TranslatorMessage Translator::find(const QString &context,

    const QString &comment, const TranslatorMessage::References &refs) const

{

    if (!refs.isEmpty()) {

        for (TMM::ConstIterator it = m_messages.constBegin(); it != m_messages.constEnd(); ++it) {

            if (it->context() == context && it->comment() == comment)

                foreach (const TranslatorMessage::Reference &itref, it->allReferences())

                    foreach (const TranslatorMessage::Reference &ref, refs)

                        if (itref == ref)

                            return *it;

        }

    }

    return TranslatorMessage();

}

bool Translator::contains(const QString &context) const

{

    foreach (const TranslatorMessage &msg, m_messages)

        if (msg.context() == context && msg.sourceText().isEmpty() && msg.id().isEmpty())

            return true;

    return false;

}

TranslatorMessage Translator::find(const QString &context) const

{

    foreach (const TranslatorMessage &msg, m_messages)

        if (msg.context() == context && msg.sourceText().isEmpty() && msg.id().isEmpty())

            return msg;

    return TranslatorMessage();

}

void Translator::stripObsoleteMessages()

{

    TMM newmm;

    for (TMM::ConstIterator it = m_messages.begin(); it != m_messages.end(); ++it)

        if (it->type() != TranslatorMessage::Obsolete)

            newmm.append(*it);

    m_messages = newmm;

}

void Translator::stripFinishedMessages()

{

    TMM newmm;

    for (TMM::ConstIterator it = m_messages.begin(); it != m_messages.end(); ++it)

        if (it->type() != TranslatorMessage::Finished)

            newmm.append(*it);

    m_messages = newmm;

}

void Translator::stripEmptyContexts()

{

    TMM newmm;

    for (TMM::ConstIterator it = m_messages.begin(); it != m_messages.end(); ++it)

        if (it->sourceText() != QLatin1String(ContextComment))

            newmm.append(*it);

    m_messages = newmm;

}

void Translator::stripNonPluralForms()

{

    TMM newmm;

    for (TMM::ConstIterator it = m_messages.begin(); it != m_messages.end(); ++it)

        if (it->isPlural())

            newmm.append(*it);

    m_messages = newmm;

}

void Translator::stripIdenticalSourceTranslations()

{

    TMM newmm;

    for (TMM::ConstIterator it = m_messages.begin(); it != m_messages.end(); ++it) {

        // we need to have just one translation, and it be equal to the source

        if (it->translations().count() != 1)

            newmm.append(*it);

        else if (it->translation() != it->sourceText())

            newmm.append(*it);

    }

    m_messages = newmm;

}

void Translator::dropTranslations()

{

    for (TMM::Iterator it = m_messages.begin(); it != m_messages.end(); ++it) {

        if (it->type() == TranslatorMessage::Finished)

            it->setType(TranslatorMessage::Unfinished);

        it->setTranslation(QString());

    }

}

void Translator::dropUiLines()

{

    QString uiXt = QLatin1String(".ui");

    QString juiXt = QLatin1String(".jui");

    for (TMM::Iterator it = m_messages.begin(); it != m_messages.end(); ++it) {

        QHash<QString, int> have;

        QList<TranslatorMessage::Reference> refs;

        foreach (const TranslatorMessage::Reference &itref, it->allReferences()) {

            const QString &fn = itref.fileName();

            if (fn.endsWith(uiXt) || fn.endsWith(juiXt)) {

                if (++have[fn] == 1)

                    refs.append(TranslatorMessage::Reference(fn, -1));

            } else {

                refs.append(itref);

            }

        }

        it->setReferences(refs);

    }

}

struct TranslatorMessageIdPtr {

    explicit TranslatorMessageIdPtr(const TranslatorMessage &tm)

    {

        ptr = &tm;

    }

    inline const TranslatorMessage *operator->() const

    {

        return ptr;

    }

    const TranslatorMessage *ptr;

};

Q_DECLARE_TYPEINFO(TranslatorMessageIdPtr, Q_MOVABLE_TYPE);

inline int qHash(TranslatorMessageIdPtr tmp)

{

    return qHash(tmp->id());

}

inline bool operator==(TranslatorMessageIdPtr tmp1, TranslatorMessageIdPtr tmp2)

{

    return tmp1->id() == tmp2->id();

}

struct TranslatorMessageContentPtr {

    explicit TranslatorMessageContentPtr(const TranslatorMessage &tm)

    {

        ptr = &tm;

    }

    inline const TranslatorMessage *operator->() const

    {

        return ptr;

    }

    const TranslatorMessage *ptr;

};

Q_DECLARE_TYPEINFO(TranslatorMessageContentPtr, Q_MOVABLE_TYPE);

inline int qHash(TranslatorMessageContentPtr tmp)

{

    int hash = qHash(tmp->context()) ^ qHash(tmp->sourceText());

    if (!tmp->sourceText().isEmpty())

        // Special treatment for context comments (empty source).

        hash ^= qHash(tmp->comment());

    return hash;

}

inline bool operator==(TranslatorMessageContentPtr tmp1, TranslatorMessageContentPtr tmp2)

{

    if (tmp1->context() != tmp2->context() || tmp1->sourceText() != tmp2->sourceText())

        return false;

    // Special treatment for context comments (empty source).

    if (tmp1->sourceText().isEmpty())

        return true;

    return tmp1->comment() == tmp2->comment();

}

Translator::Duplicates Translator::resolveDuplicates()

{

    Duplicates dups;

    QHash<TranslatorMessageIdPtr, int> idRefs;

    QHash<TranslatorMessageContentPtr, int> contentRefs;

    for (int i = 0; i < m_messages.count();) {