43 lines
1.2 KiB
Java
43 lines
1.2 KiB
Java
// SPDX-License-Identifier: LGPL-3.0-or-later
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package crosby.binary.file;
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import com.google.protobuf.ByteString;
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/**
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* Base class that contains the metadata about a fileblock.
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*
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* Subclasses of this include additional fields, such as byte offsets that let a
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* fileblock be read in a random-access fashion, or the data itself.
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*
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* @author crosby
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*
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*/
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public class FileBlockBase {
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/** If a block header is bigger than this, fail. We use excessively large header size as an indication of corrupt files */
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static final int MAX_HEADER_SIZE = 64*1024;
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/** If a block's size is bigger than this, fail. We use excessively large block sizes as an indication of corrupt files */
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static final int MAX_BODY_SIZE = 32*1024*1024;
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protected FileBlockBase(String type, ByteString indexdata) {
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this.type = type;
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this.indexdata = indexdata;
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}
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/** Identifies the type of the data within a block */
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protected final String type;
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/**
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* Block metadata, stored in the index block and as a prefix for every
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* block.
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*/
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protected final ByteString indexdata;
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public String getType() {
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return type;
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}
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public ByteString getIndexData() {
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return indexdata;
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}
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}
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