nifi-extension-bundles/nifi-evtx-bundle/nifi-evtx-processors/src/main/java/org/apache/nifi/processors/evtx/parser/bxml/ProcessingInstructionDataNode.java

/*
 * 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;

import org.apache.nifi.processors.evtx.parser.BinaryReader;
import org.apache.nifi.processors.evtx.parser.BxmlNodeVisitor;
import org.apache.nifi.processors.evtx.parser.ChunkHeader;

import java.io.IOException;
import java.util.Collections;
import java.util.List;

public class ProcessingInstructionDataNode extends BxmlNodeWithToken {
    private final int stringLength;
    private final int tagLength;
    private final String data;

    public ProcessingInstructionDataNode(BinaryReader binaryReader, ChunkHeader chunkHeader, BxmlNode parent) throws IOException {
        super(binaryReader, chunkHeader, parent);
        stringLength = binaryReader.readWord();
        tagLength = 3 + (2 * stringLength);
        if (stringLength > 0) {
            data = binaryReader.readWString(stringLength);
        } else {
            data = "";
        }
        init();
    }

    public String getValue() {
        return data + "?>";
    }

    @Override
    protected List<BxmlNode> initChildren() throws IOException {
        return Collections.emptyList();
    }

    @Override
    public void accept(BxmlNodeVisitor bxmlNodeVisitor) throws IOException {
        bxmlNodeVisitor.visit(this);
    }
}