C++ base::Writer类代码示例

void PropertyColorList::SaveDocFile (Base::Writer &writer) const
{
    Base::OutputStream str(writer.Stream());
    uint32_t uCt = (uint32_t)getSize();
    str << uCt;
    for (std::vector<App::Color>::const_iterator it = _lValueList.begin(); it != _lValueList.end(); ++it) {
        str << it->getPackedValue();
    }
}

void PropertyStringList::Save (Base::Writer &writer) const
{
    writer.Stream() << writer.ind() << "<StringList count=\"" <<  getSize() <<"\">" << endl;
    writer.incInd();
    for(int i = 0;i<getSize(); i++) {
        std::string val = encodeAttribute(_lValueList[i]);
        writer.Stream() << writer.ind() << "<String value=\"" <<  val <<"\"/>" << endl;
    }
    writer.decInd();
    writer.Stream() << writer.ind() << "</StringList>" << endl ;
}

void PointKernel::SaveDocFile (Base::Writer &writer) const
{
    Base::OutputStream str(writer.Stream());
    uint32_t uCt = (uint32_t)size();
    str << uCt;
    // store the data without transforming it
    for (std::vector<value_type>::const_iterator it = _Points.begin(); it != _Points.end(); ++it) {
        str << it->x << it->y << it->z;
    }
}

void PropertyVectorList::SaveDocFile (Base::Writer &writer) const
{
    Base::OutputStream str(writer.Stream());
    uint32_t uCt = (uint32_t)getSize();
    str << uCt;
    if (writer.getFileVersion() > 0) {
        for (std::vector<Base::Vector3d>::const_iterator it = _lValueList.begin(); it != _lValueList.end(); ++it) {
            str << it->x << it->y << it->z;
        }
    }
    else {
        for (std::vector<Base::Vector3d>::const_iterator it = _lValueList.begin(); it != _lValueList.end(); ++it) {
            float x = (float)it->x;
            float y = (float)it->y;
            float z = (float)it->z;
            str << x << y << z;
        }
    }
}

void PropertyPythonObject::saveObject(Base::Writer &writer) const
{
    Base::PyGILStateLocker lock;
    try {
        PropertyContainer* parent = this->getContainer();
        if (parent->isDerivedFrom(Base::Type::fromName("App::DocumentObject"))) {
            if (this->object.hasAttr("__object__")) {
                writer.Stream() << " object=\"yes\"";
            }
        }
        if (parent->isDerivedFrom(Base::Type::fromName("Gui::ViewProvider"))) {
            if (this->object.hasAttr("__vobject__")) {
                writer.Stream() << " vobject=\"yes\"";
            }
        }
    }
    catch (Py::Exception& e) {
        e.clear();
    }
}

void PropertyCurvatureList::SaveDocFile (Base::Writer &writer) const
{
    Base::OutputStream str(writer.Stream());
    uint32_t uCt = (uint32_t)getSize();
    str << uCt;
    for (std::vector<CurvatureInfo>::const_iterator it = _lValueList.begin(); it != _lValueList.end(); ++it) {
        str << it->fMaxCurvature << it->fMinCurvature;
        str << it->cMaxCurvDir.x << it->cMaxCurvDir.y << it->cMaxCurvDir.z;
        str << it->cMinCurvDir.x << it->cMinCurvDir.y << it->cMinCurvDir.z;
    }
}

void PropertyLinkSubList::Save (Base::Writer &writer) const
{
    writer.Stream() << writer.ind() << "<LinkSubList count=\"" <<  getSize() <<"\">" << endl;
    writer.incInd();
    for(int i = 0;i<getSize(); i++)
        writer.Stream() << writer.ind() <<
            "<Link " <<
            "obj=\"" <<  _lValueList[i]->getNameInDocument() << "\" " <<
            "sub=\"" <<  _lSubList[i] <<
        "\"/>" << endl; ;
    writer.decInd();
    writer.Stream() << writer.ind() << "</LinkSubList>" << endl ;
}

void PropertyColumnWidths::Save(Base::Writer &writer) const
{
        // Save column information
    writer.Stream() << writer.ind() << "<ColumnInfo Count=\"" << size() << "\">" << std::endl;
    writer.incInd(); // indention for 'ColumnInfo'
    std::map<int, int>::const_iterator coli = begin();
    while (coli != end()) {
        writer.Stream() << writer.ind() << "<Column name=\"" << columnName(coli->first) << "\" width=\"" << coli->second << "\" />" << std::endl;
        ++coli;
    }
    writer.decInd(); // indention for 'ColumnInfo'
    writer.Stream() << writer.ind() << "</ColumnInfo>" << std::endl;
}

void PropertyPartShape::SaveDocFile (Base::Writer &writer) const
{
    // If the shape is empty we simply store nothing. The file size will be 0 which
    // can be checked when reading in the data.
    if (_Shape._Shape.IsNull())
        return;
    // NOTE: Cleaning the triangulation may cause problems on some algorithms like BOP
    // Before writing to the project we clean all triangulation data to save memory
    BRepBuilderAPI_Copy copy(_Shape._Shape);
    const TopoDS_Shape& myShape = copy.Shape();
    BRepTools::Clean(myShape); // remove triangulation

    // create a temporary file and copy the content to the zip stream
    // once the tmp. filename is known use always the same because otherwise
    // we may run into some problems on the Linux platform
    static Base::FileInfo fi(Base::FileInfo::getTempFileName());

    if (!BRepTools::Write(myShape,(const Standard_CString)fi.filePath().c_str())) {
        // Note: Do NOT throw an exception here because if the tmp. file could
        // not be created we should not abort.
        // We only print an error message but continue writing the next files to the
        // stream...
        App::PropertyContainer* father = this->getContainer();
        if (father && father->isDerivedFrom(App::DocumentObject::getClassTypeId())) {
            App::DocumentObject* obj = static_cast<App::DocumentObject*>(father);
            Base::Console().Error("Shape of '%s' cannot be written to BRep file '%s'\n", 
                obj->Label.getValue(),fi.filePath().c_str());
        }
        else {
            Base::Console().Error("Cannot save BRep file '%s'\n", fi.filePath().c_str());
        }
    }

    Base::ifstream file(fi, std::ios::in | std::ios::binary);
    if (file){
        unsigned long ulSize = 0; 
        std::streambuf* buf = file.rdbuf();
        if (buf) {
            unsigned long ulCurr;
            ulCurr = buf->pubseekoff(0, std::ios::cur, std::ios::in);
            ulSize = buf->pubseekoff(0, std::ios::end, std::ios::in);
            buf->pubseekoff(ulCurr, std::ios::beg, std::ios::in);
        }

        // read in the ASCII file and write back to the stream
        std::strstreambuf sbuf(ulSize);
        file >> &sbuf;
        writer.Stream() << &sbuf;
    }

    file.close();
    // remove temp file
    fi.deleteFile();
}

void PropertyRowHeights::Save(Base::Writer &writer) const
{
    // Save row information
    writer.Stream() << writer.ind() << "<RowInfo Count=\"" << size() << "\">" << std::endl;
    writer.incInd(); // indention for 'RowInfo'

    std::map<int, int>::const_iterator ri = begin();
    while (ri != end()) {
        writer.Stream() << writer.ind() << "<Row name=\"" << rowName(ri->first) << "\"  height=\"" << ri->second << "\" />" << std::endl;
        ++ri;
    }
    writer.decInd(); // indention for 'RowInfo'
    writer.Stream() << writer.ind() << "</RowInfo>" << std::endl;
}

void PropertyLinkSub::Save (Base::Writer &writer) const
{
    const char* internal_name = "";
    // it can happen that the object is still alive but is not part of the document anymore and thus
    // returns 0
    if (_pcLinkSub && _pcLinkSub->getNameInDocument())
        internal_name = _pcLinkSub->getNameInDocument();
    writer.Stream() << writer.ind() << "<LinkSub value=\"" <<  internal_name <<"\" count=\"" <<  _cSubList.size() <<"\">" << std::endl;
    writer.incInd();
    for(unsigned int i = 0;i<_cSubList.size(); i++)
        writer.Stream() << writer.ind() << "<Sub value=\"" <<  _cSubList[i]<<"\"/>" << endl;
    writer.decInd();
    writer.Stream() << writer.ind() << "</LinkSub>" << endl ;
}

/** 
 * Adds a separate XML file to the projects file that contains information about the view providers.
 */
void Document::Save (Base::Writer &writer) const
{
    // It's only possible to add extra information if force of XML is disabled
    if (writer.isForceXML() == false) {
        writer.addFile("GuiDocument.xml", this);

        if (App::GetApplication().GetParameterGroupByPath
            ("User parameter:BaseApp/Preferences/Document")->GetBool("SaveThumbnail",false)) {
            std::list<MDIView*> mdi = getMDIViews();
            for (std::list<MDIView*>::iterator it = mdi.begin(); it != mdi.end(); ++it) {
                if ((*it)->getTypeId().isDerivedFrom(View3DInventor::getClassTypeId())) {
                    View3DInventorViewer* view = static_cast<View3DInventor*>(*it)->getViewer();
                    d->thumb.setFileName(d->_pcDocument->FileName.getValue());
                    d->thumb.setSize(128);
                    d->thumb.setViewer(view);
                    d->thumb.Save(writer);
                    break;
                }
            }
        }
    }
}

void PropertyFileIncluded::SaveDocFile (Base::Writer &writer) const
{
    Base::ifstream from(Base::FileInfo(_cValue.c_str()));
    if (!from)
        throw Base::Exception("PropertyFileIncluded::SaveDocFile() "
        "File in document transient dir deleted");

    // copy plain data
    unsigned char c;
    std::ostream& to = writer.Stream();
    while (from.get((char&)c)) {
        to.put((const char)c);
    }
}

void PropertyPartShape::Save (Base::Writer &writer) const
{
    if(!writer.isForceXML()) {
        //See SaveDocFile(), RestoreDocFile()
        if (writer.getMode("BinaryBrep")) {
            writer.Stream() << writer.ind() << "<Part file=\"" 
                            << writer.addFile("PartShape.bin", this)
                            << "\"/>" << std::endl;
        }
        else {
            writer.Stream() << writer.ind() << "<Part file=\"" 
                            << writer.addFile("PartShape.brp", this)
                            << "\"/>" << std::endl;
        }
    }
}

void PropertyPythonObject::Save (Base::Writer &writer) const
{
    //if (writer.isForceXML()) {
        std::string repr = this->toString();
        repr = Base::base64_encode((const unsigned char*)repr.c_str(), repr.size());
        std::string val = /*encodeValue*/(repr);
        writer.Stream() << writer.ind() << "<Python value=\"" << val
                        << "\" encoded=\"yes\"";

        Base::PyGILStateLocker lock;
        try {
            if (this->object.hasAttr("__module__") && this->object.hasAttr("__class__")) {
                Py::String mod(this->object.getAttr("__module__"));
                Py::Object cls(this->object.getAttr("__class__"));
                if (cls.hasAttr("__name__")) {
                    Py::String name(cls.getAttr("__name__"));
                    writer.Stream() << " module=\"" << (std::string)mod << "\""
                                    << " class=\"" << (std::string)name << "\"";
                }
            }
            else {
                writer.Stream() << " json=\"yes\"";
            }
        }
        catch (Py::Exception&) {
            Base::PyException e; // extract the Python error text
            e.ReportException();
        }

        saveObject(writer);
        writer.Stream() << "/>" << std::endl;
    //}
    //else {
    //    writer.Stream() << writer.ind() << "<Python file=\"" << 
    //    writer.addFile("pickle", this) << "\"/>" << std::endl;
    //}
}