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Smack/smack-experimental/src/main/java/org/jivesoftware/smackx/jingle_filetransfer/provider/JingleFileTransferProvider.java
Florian Schmaus 4133eb175c Replace XPP3 by XmlPullParser interface wrapping StAX and XPP3
Introducing Smack's own XmlPullParser interface which tries to stay as
compatible as possible to XPP3. The interface is used to either wrap
StAX's XMLStreamReader if Smack is used on Java SE, and XPP3's
XmlPullParser if Smack is used on on Android.

Fixes SMACK-591.

Also introduce JUnit 5 and non-strict javadoc projects.
2019-05-06 22:10:50 +02:00

146 lines
5.6 KiB
Java

/**
*
* Copyright 2017 Paul Schaub, 2019 Florian Schmaus
*
* 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 java.text.ParseException;
import java.util.ArrayList;
import org.jivesoftware.smack.packet.XmlEnvironment;
import org.jivesoftware.smack.parsing.SmackParsingException;
import org.jivesoftware.smack.util.ParserUtils;
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.JingleContentDescriptionChildElement;
import org.jivesoftware.smackx.jingle.provider.JingleContentDescriptionProvider;
import org.jivesoftware.smackx.jingle_filetransfer.element.JingleFileTransfer;
import org.jivesoftware.smackx.jingle_filetransfer.element.JingleFileTransferChild;
import org.jivesoftware.smackx.jingle_filetransfer.element.Range;
import org.jxmpp.util.XmppDateTime;
/**
* Provider for JingleContentDescriptionFileTransfer elements.
*/
public class JingleFileTransferProvider
extends JingleContentDescriptionProvider<JingleFileTransfer> {
@Override
public JingleFileTransfer parse(XmlPullParser parser, int initialDepth, XmlEnvironment xmlEnvironment) throws XmlPullParserException, IOException, SmackParsingException {
ArrayList<JingleContentDescriptionChildElement> payloads = new ArrayList<>();
JingleFileTransferChild.Builder builder = JingleFileTransferChild.getBuilder();
String elementName;
while (true) {
XmlPullParser.TagEvent tag = parser.nextTag();
switch (tag) {
case START_ELEMENT:
elementName = parser.getName();
switch (elementName) {
case JingleFileTransferChild.ELEM_DATE:
try {
builder.setDate(XmppDateTime.parseXEP0082Date(parser.nextText()));
} catch (ParseException e) {
throw new SmackParsingException.SmackTextParseException(e);
}
break;
case JingleFileTransferChild.ELEM_DESC:
builder.setDescription(parser.nextText());
break;
case JingleFileTransferChild.ELEM_MEDIA_TYPE:
builder.setMediaType(parser.nextText());
break;
case JingleFileTransferChild.ELEM_NAME:
builder.setName(parser.nextText());
break;
case JingleFileTransferChild.ELEM_SIZE:
builder.setSize(Integer.parseInt(parser.nextText()));
break;
case Range.ELEMENT:
Range range = parseRangeElement(parser);
builder.setRange(range);
break;
case HashElement.ELEMENT:
HashElement hashElement = HashElementProvider.INSTANCE.parse(parser);
builder.setHash(hashElement);
break;
}
break;
case END_ELEMENT:
elementName = parser.getName();
switch (elementName) {
case JingleFileTransferChild.ELEMENT:
payloads.add(builder.build());
builder = JingleFileTransferChild.getBuilder();
break;
case JingleFileTransfer.ELEMENT:
return new JingleFileTransfer(payloads);
}
break;
}
}
}
public static Range parseRangeElement(XmlPullParser parser) throws IOException, XmlPullParserException, SmackParsingException {
final int initialDepth = parser.getDepth();
final Integer offset = ParserUtils.getIntegerAttribute(parser, Range.ATTR_OFFSET);
final Integer length = ParserUtils.getIntegerAttribute(parser, Range.ATTR_LENGTH);
HashElement hashElement = null;
outerloop: while (true) {
String element;
XmlPullParser.Event event = parser.next();
switch (event) {
case START_ELEMENT:
element = parser.getName();
switch (element) {
case HashElement.ELEMENT:
hashElement = HashElementProvider.INSTANCE.parse(parser);
break;
}
break;
case END_ELEMENT:
element = parser.getName();
if (element.equals(Range.ELEMENT) && parser.getDepth() == initialDepth) {
break outerloop;
}
break;
default:
// Catch all for incomplete switch (MissingCasesInEnumSwitch) statement.
break;
}
}
return new Range(offset, length, hashElement);
}
}