didlparser.java

android_UPNP_DLNA_控制点

                    );
                } else if ("storageMedium".equals(localName)) {
                    getInstance().addProperty(
                            new DIDLObject.Property.UPNP.STORAGE_MEDIUM(StorageMedium.valueOrVendorSpecificOf(getCharacters()))
                    );
                } else if ("genre".equals(localName)) {
                    getInstance().addProperty(
                            new DIDLObject.Property.UPNP.GENRE(getCharacters())
                    );
                } else if ("album".equals(localName)) {
                    getInstance().addProperty(
                            new DIDLObject.Property.UPNP.ALBUM(getCharacters())
                    );
                } else if ("playlist".equals(localName)) {
                    getInstance().addProperty(
                            new DIDLObject.Property.UPNP.PLAYLIST(getCharacters())
                    );
                } else if ("region".equals(localName)) {
                    getInstance().addProperty(
                            new DIDLObject.Property.UPNP.REGION(getCharacters())
                    );
                } else if ("rating".equals(localName)) {
                    getInstance().addProperty(
                            new DIDLObject.Property.UPNP.RATING(getCharacters())
                    );
                } else if ("toc".equals(localName)) {
                    getInstance().addProperty(
                            new DIDLObject.Property.UPNP.TOC(getCharacters())
                    );
                } else if ("albumArtURI".equals(localName)) {
                    DIDLObject.Property albumArtURI = new DIDLObject.Property.UPNP.ALBUM_ART_URI(URI.create(getCharacters()));

                    Attributes albumArtURIAttributes = getAttributes();
                    for (int i = 0; i < albumArtURIAttributes.getLength(); i++) {
                        if ("profileID".equals(albumArtURIAttributes.getLocalName(i))) {
                            albumArtURI.addAttribute(
                                    new DIDLObject.Property.DLNA.PROFILE_ID(
                                            new DIDLAttribute(
                                                    DIDLObject.Property.DLNA.NAMESPACE.URI,
                                                    "dlna",
                                                    albumArtURIAttributes.getValue(i))
                                    ));
                        }
                    }

                    getInstance().addProperty(albumArtURI);
                } else if ("artistDiscographyURI".equals(localName)) {
                    getInstance().addProperty(
                            new DIDLObject.Property.UPNP.ARTIST_DISCO_URI(URI.create(getCharacters()))
                    );
                } else if ("lyricsURI".equals(localName)) {
                    getInstance().addProperty(
                            new DIDLObject.Property.UPNP.LYRICS_URI(URI.create(getCharacters()))
                    );
                } else if ("icon".equals(localName)) {
                    getInstance().addProperty(
                            new DIDLObject.Property.UPNP.ICON(URI.create(getCharacters()))
                    );
                } else if ("radioCallSign".equals(localName)) {
                    getInstance().addProperty(
                            new DIDLObject.Property.UPNP.RADIO_CALL_SIGN(getCharacters())
                    );
                } else if ("radioStationID".equals(localName)) {
                    getInstance().addProperty(
                            new DIDLObject.Property.UPNP.RADIO_STATION_ID(getCharacters())
                    );
                } else if ("radioBand".equals(localName)) {
                    getInstance().addProperty(
                            new DIDLObject.Property.UPNP.RADIO_BAND(getCharacters())
                    );
                } else if ("channelNr".equals(localName)) {
                    getInstance().addProperty(
                            new DIDLObject.Property.UPNP.CHANNEL_NR(Integer.valueOf(getCharacters()))
                    );
                } else if ("channelName".equals(localName)) {
                    getInstance().addProperty(
                            new DIDLObject.Property.UPNP.CHANNEL_NAME(getCharacters())
                    );
                } else if ("scheduledStartTime".equals(localName)) {
                    getInstance().addProperty(
                            new DIDLObject.Property.UPNP.SCHEDULED_START_TIME(getCharacters())
                    );
                } else if ("scheduledEndTime".equals(localName)) {
                    getInstance().addProperty(
                            new DIDLObject.Property.UPNP.SCHEDULED_END_TIME(getCharacters())
                    );
                } else if ("DVDRegionCode".equals(localName)) {
                    getInstance().addProperty(
                            new DIDLObject.Property.UPNP.DVD_REGION_CODE(Integer.valueOf(getCharacters()))
                    );
                } else if ("originalTrackNumber".equals(localName)) {
                    getInstance().addProperty(
                            new DIDLObject.Property.UPNP.ORIGINAL_TRACK_NUMBER(Integer.valueOf(getCharacters()))
                    );
                } else if ("userAnnotation".equals(localName)) {
                    getInstance().addProperty(
                            new DIDLObject.Property.UPNP.USER_ANNOTATION(getCharacters())
                    );
                }
            }
        }
    }

    public class RootHandler extends Handler<DIDLContent> {

        RootHandler(DIDLContent instance, SAXParser parser) {
            super(instance, parser);
        }

        @Override
        public void startElement(String uri, String localName, String qName, Attributes attributes) throws SAXException {
            super.startElement(uri, localName, qName, attributes);

            if (!DIDLContent.NAMESPACE_URI.equals(uri)) return;

            if (localName.equals("container")) {

                Container container = createContainer(attributes);
                getInstance().addContainer(container);
                createContainerHandler(container, this);

            } else if (localName.equals("item")) {

                Item item = createItem(attributes);
                getInstance().addItem(item);
                createItemHandler(item, this);

            } else if (localName.equals("desc")) {

                DescMeta desc = createDescMeta(attributes);
                getInstance().addDescMetadata(desc);
                createDescMetaHandler(desc, this);

            }
        }

        @Override
        protected boolean isLastElement(String uri, String localName, String qName) {
            if (DIDLContent.NAMESPACE_URI.equals(uri) && "DIDL-Lite".equals(localName)) {

                // Now transform all the generically typed Container and Item instances into
                // more specific Album, MusicTrack, etc. instances
                getInstance().replaceGenericContainerAndItems();

                return true;
            }
            return false;
        }
    }

    public class ContainerHandler extends DIDLObjectHandler<Container> {
        public ContainerHandler(Container instance, Handler parent) {
            super(instance, parent);
        }

        @Override
        public void startElement(String uri, String localName, String qName, Attributes attributes) throws SAXException {
            super.startElement(uri, localName, qName, attributes);

            if (!DIDLContent.NAMESPACE_URI.equals(uri)) return;

            if (localName.equals("item")) {

                Item item = createItem(attributes);
                getInstance().addItem(item);
                createItemHandler(item, this);

            } else if (localName.equals("desc")) {

                DescMeta desc = createDescMeta(attributes);
                getInstance().addDescMetadata(desc);
                createDescMetaHandler(desc, this);

            } else if (localName.equals("res")) {

                Res res = createResource(attributes);
                if (res != null) {
                    getInstance().addResource(res);
                    createResHandler(res, this);
                }

            }

            // We do NOT support recursive container embedded in container! The schema allows it
            // but the spec doesn't:
            //
            // Section 2.8.3: Incremental navigation i.e. the full hierarchy is never returned
            // in one call since this is likely to flood the resources available to the control
            // point (memory, network bandwidth, etc.).
        }

        @Override
        public void endElement(String uri, String localName, String qName) throws SAXException {
            super.endElement(uri, localName, qName);

            if (DIDLObject.Property.UPNP.NAMESPACE.URI.equals(uri)) {

                if ("searchClass".equals(localName)) {
                    getInstance().getSearchClasses().add(
                            new DIDLObject.Class(
                                    getCharacters(),
                                    getAttributes().getValue("name"),
                                    "true".equals(getAttributes().getValue("includeDerived"))
                            )
                    );
                } else if ("createClass".equals(localName)) {
                    getInstance().getCreateClasses().add(
                            new DIDLObject.Class(
                                    getCharacters(),
                                    getAttributes().getValue("name"),
                                    "true".equals(getAttributes().getValue("includeDerived"))
                            )
                    );
                }
            }
        }

        @Override
        protected boolean isLastElement(String uri, String localName, String qName) {
            if (DIDLContent.NAMESPACE_URI.equals(uri) && "container".equals(localName)) {
                if (getInstance().getTitle() == null) {
                    log.warning("In DIDL content, missing 'dc:title' element for container: " + getInstance().getId());
                }
                if (getInstance().getClazz() == null) {
                    log.warning("In DIDL content, missing 'upnp:class' element for container: " + getInstance().getId());
                }
                return true;
            }
            return false;
        }
    }

    public class ItemHandler extends DIDLObjectHandler<Item> {
        public ItemHandler(Item instance, Handler parent) {
            super(instance, parent);
        }

        @Override
        public void startElement(String uri, String localName, String qName, Attributes attributes) throws SAXException {
            super.startElement(uri, localName, qName, attributes);

            if (!DIDLContent.NAMESPACE_URI.equals(uri)) return;

            if (localName.equals("res")) {

                Res res = createResource(attributes);
                if (res != null) {
                    getInstance().addResource(res);
                    createResHandler(res, this);
                }

            } else if (localName.equals("desc")) {

                DescMeta desc = createDescMeta(attributes);
                getInstance().addDescMetadata(desc);
                createDescMetaHandler(desc, this);

            }
        }

        @Override
        protected boolean isLastElement(String uri, String localName, String qName) {
            if (DIDLContent.NAMESPACE_URI.equals(uri) && "item".equals(localName)) {
                if (getInstance().getTitle() == null) {
                    log.warning("In DIDL content, missing 'dc:title' element for item: " + getInstance().getId());
                }
                if (getInstance().getClazz() == null) {
                    log.warning("In DIDL content, missing 'upnp:class' element for item: " + getInstance().getId());
                }
                return true;
            }
            return false;
        }
    }

    protected class ResHandler extends Handler<Res> {
        public ResHandler(Res instance, Handler parent) {
            super(instance, parent);
        }

        @Override
        public void endElement(String uri, String localName, String qName) throws SAXException {
            super.endElement(uri, localName, qName);
            getInstance().setValue(getCharacters());
        }

        @Override
        protected boolean isLastElement(String uri, String localName, String qName) {
            return DIDLContent.NAMESPACE_URI.equals(uri) && "res".equals(localName);
        }
    }

    /**
     * Extracts an <code>org.w3c.Document</code> from the nested elements in the {@code <desc>} element.
     * <p>
     * The root element of this document is a wrapper in the namespace
     * {@link org.teleal.cling.support.model.DIDLContent#DESC_WRAPPER_NAMESPACE_URI}.
     * </p>
     */
    public class DescMetaHandler extends Handler<DescMeta> {

        protected Element current;

        public DescMetaHandler(DescMeta instance, Handler parent) {
            super(instance, parent);
            instance.setMetadata(instance.createMetadataDocument());
            current = getInstance().getMetadata().getDocumentElement();
        }

        @Override
        public DescMeta<Document> getInstance() {
            return super.getInstance();
        }

        @Override
        public void startElement(String uri, String localName, String qName, Attributes attributes) throws SAXException {
            super.startElement(uri, localName, qName, attributes);

            Element newEl = getInstance().getMetadata().createElementNS(uri, qName);
            for (int i = 0; i < attributes.getLength(); i++) {
                newEl.setAttributeNS(
                        attributes.getURI(i),
                        attributes.getQName(i),
                        attributes.getValue(i)
                );
            }
            current.appendChild(newEl);
            current = newEl;
        }

        @Override
        public void endElement(String uri, String localName, String qName) throws SAXException {
            super.endElement(uri, localName, qName);
            if (isLastElement(uri, localName, qName)) return;

            // Ignore whitespace
            if (getCharacters().length() > 0 && !getCharacters().matches("[\\t\\n\\x0B\\f\\r\\s]+"))
                current.appendChild(getInstance().getMetadata().createTextNode(getCharacters()));

            current = (Element) current.getParentNode();

            // Reset this so we can continue parsing child nodes with this handler
            characters = new StringBuilder();
            attributes = null;
        }

        @Override
        protected boolean isLastElement(String uri, String localName, String qName) {
            return DIDLContent.NAMESPACE_URI.equals(uri) && "desc".equals(localName);
        }
    }
}