94 lines
3.6 KiB
Java
94 lines
3.6 KiB
Java
/**
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*
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* Copyright 2017 Paul Schaub
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package org.jivesoftware.smackx.jingle_filetransfer.provider;
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import static org.xmlpull.v1.XmlPullParser.END_TAG;
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import static org.xmlpull.v1.XmlPullParser.START_TAG;
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import org.jivesoftware.smack.provider.ExtensionElementProvider;
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import org.jivesoftware.smack.util.ParserUtils;
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import org.jivesoftware.smackx.hashes.element.HashElement;
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import org.jivesoftware.smackx.hashes.provider.HashElementProvider;
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import org.jivesoftware.smackx.jingle.element.JingleContentElement;
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import org.jivesoftware.smackx.jingle_filetransfer.element.ChecksumElement;
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import org.jivesoftware.smackx.jingle_filetransfer.element.JingleFileTransferChildElement;
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import org.jivesoftware.smackx.jingle_filetransfer.element.Range;
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import org.xmlpull.v1.XmlPullParser;
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/**
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* Provider for the Checksum element.
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*/
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public class ChecksumProvider extends ExtensionElementProvider<ChecksumElement> {
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private static final HashElementProvider hashProvider = new HashElementProvider();
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@Override
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public ChecksumElement parse(XmlPullParser parser, int initialDepth) throws Exception {
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JingleContentElement.Creator creator = null;
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String creatorString = parser.getAttributeValue(null, ChecksumElement.ATTR_CREATOR);
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if (creatorString != null) {
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creator = JingleContentElement.Creator.valueOf(creatorString);
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}
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String name = parser.getAttributeValue(null, ChecksumElement.ATTR_NAME);
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JingleFileTransferChildElement.Builder cb = JingleFileTransferChildElement.getBuilder();
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HashElement hashElement = null;
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Range range = null;
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boolean go = true;
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while (go) {
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int tag = parser.nextTag();
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String n = parser.getName();
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if (tag == START_TAG) {
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switch (n) {
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case HashElement.ELEMENT:
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hashElement = hashProvider.parse(parser);
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break;
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case Range.ELEMENT:
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Long offset = ParserUtils.getLongAttribute(parser, Range.ATTR_OFFSET);
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Long length = ParserUtils.getLongAttribute(parser, Range.ATTR_LENGTH);
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range = new Range(offset, length);
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}
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} else if (tag == END_TAG) {
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switch (n) {
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case Range.ELEMENT:
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if (hashElement != null && range != null) {
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range = new Range(range.getOffset(), range.getLength(), hashElement);
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hashElement = null;
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}
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break;
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case JingleFileTransferChildElement.ELEMENT:
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if (hashElement != null) {
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cb.setHash(hashElement);
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}
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if (range != null) {
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cb.setRange(range);
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}
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go = false;
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}
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}
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}
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return new ChecksumElement(creator, name, cb.build());
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}
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}
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