001/**
002 *
003 * Copyright © 2017 Grigory Fedorov
004 *
005 * Licensed under the Apache License, Version 2.0 (the "License");
006 * you may not use this file except in compliance with the License.
007 * You may obtain a copy of the License at
008 *
009 *     http://www.apache.org/licenses/LICENSE-2.0
010 *
011 * Unless required by applicable law or agreed to in writing, software
012 * distributed under the License is distributed on an "AS IS" BASIS,
013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014 * See the License for the specific language governing permissions and
015 * limitations under the License.
016 */
017package org.jivesoftware.smackx.httpfileupload.provider;
018
019import java.io.IOException;
020import java.net.URL;
021import java.util.HashMap;
022import java.util.Map;
023
024import org.jivesoftware.smack.SmackException;
025import org.jivesoftware.smack.provider.IQProvider;
026import org.jivesoftware.smack.util.ParserUtils;
027
028import org.jivesoftware.smackx.httpfileupload.element.Slot;
029import org.jivesoftware.smackx.httpfileupload.element.Slot_V0_2;
030
031import org.xmlpull.v1.XmlPullParser;
032import org.xmlpull.v1.XmlPullParserException;
033
034/**
035 * Provider for Slot.
036 *
037 * @author Grigory Fedorov
038 * @see <a href="http://xmpp.org/extensions/xep-0363.html">XEP-0363: HTTP File Upload</a>
039 */
040public class SlotProvider extends IQProvider<Slot> {
041
042    @Override
043    public Slot parse(XmlPullParser parser, int initialDepth) throws XmlPullParserException, IOException, SmackException {
044        final String namespace = parser.getNamespace();
045        URL putUrl = null;
046        URL getUrl = null;
047        Map<String, String> headers = null;
048
049        outerloop: while (true) {
050            int event = parser.next();
051
052            switch (event) {
053                case XmlPullParser.START_TAG:
054                    String name = parser.getName();
055                    switch (name) {
056                        case "put":
057                            putUrl = new URL(parser.nextText());
058                            break;
059                        case "get":
060                            getUrl = new URL(parser.nextText());
061                            break;
062                        case "header":
063                            String headerName = ParserUtils.getRequiredAttribute(parser, "name");
064                            String headerValue = ParserUtils.getRequiredNextText(parser);
065                            if (headers == null) {
066                                headers = new HashMap<>();
067                            }
068                            headers.put(headerName, headerValue);
069                            break;
070                    }
071                    break;
072                case XmlPullParser.END_TAG:
073                    if (parser.getDepth() == initialDepth) {
074                        break outerloop;
075                    }
076                    break;
077            }
078        }
079
080        switch (namespace) {
081        case Slot.NAMESPACE:
082            return new Slot(putUrl, getUrl, headers);
083        case Slot_V0_2.NAMESPACE:
084            return new Slot_V0_2(putUrl, getUrl);
085        default:
086            throw new AssertionError();
087        }
088    }
089}