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- /* ====================================================================
- 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.poi.hslf.record;
-
- import java.io.IOException;
- import java.io.OutputStream;
- import java.util.Map;
- import java.util.function.Supplier;
-
- import org.apache.poi.util.GenericRecordUtil;
- import org.apache.poi.util.IOUtils;
- import org.apache.poi.util.LittleEndian;
-
- /**
- * If we come across a record we don't know about, we create one of
- * these. It allows us to keep track of what it contains, so we can
- * write it back out to disk unchanged
- *
- * @author Nick Burch
- */
-
- @SuppressWarnings("unused")
- public final class UnknownRecordPlaceholder extends RecordAtom
- {
-
- //arbitrarily selected; may need to increase
- private static final int MAX_RECORD_LENGTH = 20_000_000;
-
- private byte[] _contents;
- private long _type;
-
- /**
- * Create a new holder for a record we don't grok
- */
- protected UnknownRecordPlaceholder(byte[] source, int start, int len) {
- // Sanity Checking - including whole header, so treat
- // length as based of 0, not 8 (including header size based)
- if(len < 0) { len = 0; }
-
- // Treat as an atom, grab and hold everything
- _contents = IOUtils.safelyAllocate(len, MAX_RECORD_LENGTH);
- System.arraycopy(source,start,_contents,0,len);
- _type = LittleEndian.getUShort(_contents,2);
- }
-
- /**
- * Return the value we were given at creation
- */
- public long getRecordType() {
- return _type;
- }
-
- /**
- * Return the value as enum we were given at creation
- */
- public org.apache.poi.hslf.record.RecordTypes getRecordTypeEnum() {
- return RecordTypes.forTypeID((int)_type);
- }
-
- /**
- * Write the contents of the record back, so it can be written
- * to disk
- */
- public void writeOut(OutputStream out) throws IOException {
- out.write(_contents);
- }
-
- @Override
- public Map<String, Supplier<?>> getGenericProperties() {
- return GenericRecordUtil.getGenericProperties("contents", () -> _contents);
- }
- }
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