ChecksumProvider.java
- /**
- *
- * Copyright 2017 Paul Schaub
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
- package org.jivesoftware.smackx.jingle_filetransfer.provider;
- import java.io.IOException;
- import org.jivesoftware.smack.packet.XmlEnvironment;
- import org.jivesoftware.smack.parsing.SmackParsingException;
- import org.jivesoftware.smack.provider.ExtensionElementProvider;
- import org.jivesoftware.smack.xml.XmlPullParser;
- import org.jivesoftware.smack.xml.XmlPullParserException;
- import org.jivesoftware.smackx.hashes.element.HashElement;
- import org.jivesoftware.smackx.hashes.provider.HashElementProvider;
- import org.jivesoftware.smackx.jingle.element.JingleContent;
- import org.jivesoftware.smackx.jingle_filetransfer.element.Checksum;
- import org.jivesoftware.smackx.jingle_filetransfer.element.JingleFileTransferChild;
- import org.jivesoftware.smackx.jingle_filetransfer.element.Range;
- /**
- * Provider for the Checksum element.
- */
- public class ChecksumProvider extends ExtensionElementProvider<Checksum> {
- @Override
- public Checksum parse(XmlPullParser parser, int initialDepth, XmlEnvironment xmlEnvironment) throws XmlPullParserException, IOException, SmackParsingException {
- JingleContent.Creator creator = null;
- String creatorString = parser.getAttributeValue(null, Checksum.ATTR_CREATOR);
- if (creatorString != null) {
- creator = JingleContent.Creator.valueOf(creatorString);
- }
- String name = parser.getAttributeValue(null, Checksum.ATTR_NAME);
- JingleFileTransferChild.Builder cb = JingleFileTransferChild.getBuilder();
- HashElement hashElement = null;
- Range range = null;
- boolean go = true;
- while (go) {
- XmlPullParser.TagEvent tag = parser.nextTag();
- String n = parser.getText();
- switch (tag) {
- case START_ELEMENT:
- switch (n) {
- case HashElement.ELEMENT:
- hashElement = new HashElementProvider().parse(parser);
- break;
- case Range.ELEMENT:
- String offset = parser.getAttributeValue(null, Range.ATTR_OFFSET);
- String length = parser.getAttributeValue(null, Range.ATTR_LENGTH);
- int o = offset == null ? 0 : Integer.parseInt(offset);
- int l = length == null ? -1 : Integer.parseInt(length);
- range = new Range(o, l);
- }
- break;
- case END_ELEMENT:
- switch (n) {
- case Range.ELEMENT:
- if (hashElement != null && range != null) {
- range = new Range(range.getOffset(), range.getLength(), hashElement);
- hashElement = null;
- }
- break;
- case JingleFileTransferChild.ELEMENT:
- if (hashElement != null) {
- cb.setHash(hashElement);
- }
- if (range != null) {
- cb.setRange(range);
- }
- go = false;
- }
- break;
- }
- }
- return new Checksum(creator, name, cb.build());
- }
- }