qtextdocumentwriter.cpp

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#include "qtextdocumentwriter.h"

#include <QtCore/qfile.h>
#include <QtCore/qbytearray.h>
#include <QtCore/qfileinfo.h>
#include <QtCore/qtextcodec.h>
#include <QtCore/qtextstream.h>
#include <QtCore/qdebug.h>
#include "qtextdocument.h"
#include "qtextdocumentfragment.h"

#include "qtextdocumentfragment_p.h"
#include "qtextodfwriter_p.h"

QT_BEGIN_NAMESPACE

class QTextDocumentWriterPrivate
{
public:
    QTextDocumentWriterPrivate(QTextDocumentWriter* qq);

    // device
    QByteArray format;
    QIODevice *device;
    bool deleteDevice;
#ifndef QT_NO_TEXTCODEC
    QTextCodec *codec;
#endif

    QTextDocumentWriter *q;
};

QTextDocumentWriterPrivate::QTextDocumentWriterPrivate(QTextDocumentWriter *qq)
    : device(0),
    deleteDevice(false),
#ifndef QT_NO_TEXTCODEC
    codec(QTextCodec::codecForName("utf-8")),
#endif
    q(qq)
{
}

QTextDocumentWriter::QTextDocumentWriter()
    : d(new QTextDocumentWriterPrivate(this))
{
}

QTextDocumentWriter::QTextDocumentWriter(QIODevice *device, const QByteArray &format)
    : d(new QTextDocumentWriterPrivate(this))
{
    d->device = device;
    d->format = format;
}

QTextDocumentWriter::QTextDocumentWriter(const QString &fileName, const QByteArray &format)
    : d(new QTextDocumentWriterPrivate(this))
{
    QFile *file = new QFile(fileName);
    d->device = file;
    d->deleteDevice = true;
    d->format = format;
}

QTextDocumentWriter::~QTextDocumentWriter()
{
    if (d->deleteDevice)
        delete d->device;
    delete d;
}

void QTextDocumentWriter::setFormat (const QByteArray &format)
{
    d->format = format;
}

QByteArray QTextDocumentWriter::format () const
{
    return d->format;
}

void QTextDocumentWriter::setDevice (QIODevice *device)
{
    if (d->device && d->deleteDevice)
        delete d->device;

    d->device = device;
    d->deleteDevice = false;
}

QIODevice *QTextDocumentWriter::device () const
{
    return d->device;
}

void QTextDocumentWriter::setFileName (const QString &fileName)
{
    setDevice(new QFile(fileName));
    d->deleteDevice = true;
}

QString QTextDocumentWriter::fileName () const
{
    QFile *file = qobject_cast<QFile *>(d->device);
    return file ? file->fileName() : QString();
}

bool QTextDocumentWriter::write(const QTextDocument *document)
{
    QByteArray suffix;

    if (d->device && d->format.isEmpty()) {
        // if there's no format, see if device is a file, and if so, find
        // the file suffix
        if (QFile *file = qobject_cast<QFile *>(d->device))
            suffix = QFileInfo(file->fileName()).suffix().toLower().toLatin1();
    }

    QByteArray format = !d->format.isEmpty() ? d->format.toLower() : suffix;

#ifndef QT_NO_TEXTODFWRITER
    if (format == "odf" || format == "opendocumentformat" || format == "odt") {
        QTextOdfWriter writer(*document, d->device);
#ifndef QT_NO_TEXTCODEC
        writer.setCodec(d->codec);
#endif
        return writer.writeAll();
    }
#endif // QT_NO_TEXTODFWRITER

#ifndef QT_NO_TEXTHTMLPARSER
    if (format == "html" || format == "htm") {
        if (!d->device->isWritable() && ! d->device->open(QIODevice::WriteOnly)) {
            qWarning() << "QTextDocumentWriter::write: the device can not be opened for writing";
            return false;
        }
        QTextStream ts(d->device);
#ifndef QT_NO_TEXTCODEC
        ts.setCodec(d->codec);
        ts << document->toHtml(d->codec->name());
#endif
        d->device->close();
        return true;
    }
#endif
    if (format == "txt" || format == "plaintext") {
        if (!d->device->isWritable() && ! d->device->open(QIODevice::WriteOnly)) {
            qWarning() << "QTextDocumentWriter::write: the device can not be opened for writing";
            return false;
        }
        QTextStream ts(d->device);
#ifndef QT_NO_TEXTCODEC
        ts.setCodec(d->codec);
#endif
        ts << document->toPlainText();
        d->device->close();
        return true;
    }

    return false;
}

bool QTextDocumentWriter::write(const QTextDocumentFragment &fragment)
{
    if (fragment.d == 0)
        return false; // invalid fragment.
    QTextDocument *doc = fragment.d->doc;
    if (doc)
        return write(doc);
    return false;
}

#ifndef QT_NO_TEXTCODEC
void QTextDocumentWriter::setCodec(QTextCodec *codec)
{
    if (codec == 0)
        codec = QTextCodec::codecForName("UTF-8");
    Q_ASSERT(codec);
    d->codec = codec;
}
#endif

#ifndef QT_NO_TEXTCODEC
QTextCodec *QTextDocumentWriter::codec() const
{
    return d->codec;
}
#endif

QList<QByteArray> QTextDocumentWriter::supportedDocumentFormats()
{
    QList<QByteArray> answer;
    answer << "plaintext";

#ifndef QT_NO_TEXTHTMLPARSER
    answer << "HTML";
#endif
#ifndef QT_NO_TEXTODFWRITER
    answer << "ODF";
#endif // QT_NO_TEXTODFWRITER

    qSort(answer);
    return answer;
}

QT_END_NAMESPACE