/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You 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.apache.nifi.processors.evtx.parser.bxml.value;
import org.apache.nifi.processors.evtx.parser.BinaryReader;
import org.apache.nifi.processors.evtx.parser.ChunkHeader;
import org.apache.nifi.processors.evtx.parser.bxml.BxmlNode;
import org.apache.nifi.stream.io.ByteArrayOutputStream;
import javax.xml.stream.XMLOutputFactory;
import javax.xml.stream.XMLStreamException;
import javax.xml.stream.XMLStreamWriter;
import java.io.IOException;
/**
* Node representing an array of wstring values
*/
public class WStringArrayTypeNode extends VariantTypeNode {
public static final XMLOutputFactory XML_OUTPUT_FACTORY = XMLOutputFactory.newFactory();
private final String value;
public WStringArrayTypeNode(BinaryReader binaryReader, ChunkHeader chunkHeader, BxmlNode parent, int length) throws IOException {
super(binaryReader, chunkHeader, parent, length);
String raw;
if (length >= 0) {
raw = binaryReader.readWString(length / 2);
} else {
int binaryLength = binaryReader.readWord();
raw = binaryReader.readWString(binaryLength / 2);
}
ByteArrayOutputStream stream = new ByteArrayOutputStream();
try {
XMLStreamWriter xmlStreamWriter = XML_OUTPUT_FACTORY.createXMLStreamWriter(stream, "UTF-8");
for (String s : raw.split("\u0000")) {
xmlStreamWriter.writeStartElement("string");
try {
xmlStreamWriter.writeCharacters(s);
} finally {
xmlStreamWriter.writeEndElement();
}
}
xmlStreamWriter.close();
} catch (XMLStreamException e) {
throw new IOException(e);
}
value = stream.toString("UTF-8");
}
@Override
public String getValue() {
return value;
}
}