Method openDocument

core/document.cpp:2352–2557

}

Document::OpenResult Document::openDocument(const QString &docFile, const QUrl &url, const QMimeType &_mime, const QString &password)
{
    QMimeDatabase db;
    QMimeType mime = _mime;
    QByteArray filedata;
    int fd = -1;
    if (url.scheme() == QLatin1String("fd")) {
        bool ok;
        fd = QStringView {url.path()}.mid(1).toInt(&ok);
        if (!ok) {
            return OpenError;
        }
    } else if (url.fileName() == QLatin1String("-")) {
        fd = 0;
    }
    bool triedMimeFromFileContent = false;
    if (fd < 0) {
        if (!mime.isValid()) {
            return OpenError;
        }

        d->m_url = url;
        d->m_docFileName = docFile;

        if (!d->updateMetadataXmlNameAndDocSize()) {
            return OpenError;
        }
    } else {
        QFile qstdin;
        const bool ret = qstdin.open(fd, QIODevice::ReadOnly, QFileDevice::AutoCloseHandle);
        if (!ret) {
            qWarning() << "failed to read" << url << filedata;
            return OpenError;
        }

        filedata = qstdin.readAll();
        mime = db.mimeTypeForData(filedata);
        if (!mime.isValid() || mime.isDefault()) {
            return OpenError;
        }
        d->m_docSize = filedata.size();
        triedMimeFromFileContent = true;
    }

    const bool fromFileDescriptor = fd >= 0;

    // 0. load Generator
    // request only valid non-disabled plugins suitable for the mimetype
    KPluginMetaData offer = DocumentPrivate::generatorForMimeType(mime, d->m_widget);
    if (!offer.isValid() && !triedMimeFromFileContent) {
        QMimeType newmime = db.mimeTypeForFile(docFile, QMimeDatabase::MatchContent);
        triedMimeFromFileContent = true;
        if (newmime != mime) {
            mime = newmime;
            offer = DocumentPrivate::generatorForMimeType(mime, d->m_widget);
        }
        if (!offer.isValid()) {
            // There's still no offers, do a final mime search based on the filename