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 org.jivesoftware.smack.SmackException;
020import org.jivesoftware.smack.provider.IQProvider;
021import org.jivesoftware.smack.util.ParserUtils;
022import org.jivesoftware.smackx.httpfileupload.element.Slot;
023import org.jivesoftware.smackx.httpfileupload.element.Slot_V0_2;
024import org.xmlpull.v1.XmlPullParser;
025import org.xmlpull.v1.XmlPullParserException;
026
027import java.io.IOException;
028import java.net.URL;
029import java.util.HashMap;
030import java.util.Map;
031
032/**
033 * Provider for Slot.
034 *
035 * @author Grigory Fedorov
036 * @see <a href="http://xmpp.org/extensions/xep-0363.html">XEP-0363: HTTP File Upload</a>
037 */
038public class SlotProvider extends IQProvider<Slot> {
039
040    @Override
041    public Slot parse(XmlPullParser parser, int initialDepth) throws XmlPullParserException, IOException, SmackException {
042        final String namespace = parser.getNamespace();
043        URL putUrl = null;
044        URL getUrl = null;
045        Map<String, String> headers = null;
046
047        outerloop: while (true) {
048            int event = parser.next();
049
050            switch (event) {
051                case XmlPullParser.START_TAG:
052                    String name = parser.getName();
053                    switch(name) {
054                        case "put":
055                            putUrl = new URL(parser.nextText());
056                            break;
057                        case "get":
058                            getUrl = new URL(parser.nextText());
059                            break;
060                        case "header":
061                            String headerName = ParserUtils.getRequiredAttribute(parser, "name");
062                            String headerValue = ParserUtils.getRequiredNextText(parser);
063                            if (headers == null) {
064                                headers = new HashMap<>();
065                            }
066                            headers.put(headerName, headerValue);
067                            break;
068                    }
069                    break;
070                case XmlPullParser.END_TAG:
071                    if (parser.getDepth() == initialDepth) {
072                        break outerloop;
073                    }
074                    break;
075            }
076        }
077
078        switch (namespace) {
079        case Slot.NAMESPACE:
080            return new Slot(putUrl, getUrl, headers);
081        case Slot_V0_2.NAMESPACE:
082            return new Slot_V0_2(putUrl, getUrl);
083        default:
084            throw new AssertionError();
085        }
086    }
087}