What Is poi-scratchpad-5.2.3.jar?

poi-scratchpad-5.2.3.jar is one of the JAR files for Apache POI 5.2.3, which provides an API for Microsoft document files of Word, Excel, PowerPoint, and Visio.

poi-scratchpad-5.2.3.jar provides support for older versions of Microsoft document files like Word 97, Excel 97, PowerPoint 97, etc.

poi-scratchpad-5.2.3.jar is distributed as part of the poi-bin-5.2.3-20220909.zip download file.

JAR File Size and Download Location:

JAR name: poi-scratchpad-5.2.3.jar
Target JDK version: 9
Dependency: 
   poi.jar

File name: poi-scratchpad.jar, poi-scratchpad-5.2.3.jar
File size: 1897121 bytes
Release date: 09-09-2022
Download: Apache POI Website

Here are Java Source Code files for poi-scratchpad-5.2.3.jar:

⏎ org/apache/poi/hsmf/datatypes/ByteChunkDeferred.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.poi.hsmf.datatypes;

import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;

import org.apache.poi.hsmf.datatypes.Types.MAPIType;
import org.apache.poi.poifs.filesystem.DirectoryNode;
import org.apache.poi.poifs.filesystem.DocumentInputStream;
import org.apache.poi.poifs.filesystem.DocumentNode;
import org.apache.poi.util.IOUtils;

/**
 * A Chunk that either acts as {@link ByteChunk} (if not initialized with a node) or
 * lazy loads its binary data from the document (if linked with a node via {@link #readValue(DocumentNode)}).
 */
public class ByteChunkDeferred extends ByteChunk {

    private DocumentNode node;

    /**
     * Creates a Byte Stream Chunk, with the specified type.
     */
    public ByteChunkDeferred(String namePrefix, int chunkId, MAPIType type) {
        super(namePrefix, chunkId, type);
    }

    /**
     * Links the chunk to a document
     * @param node the document node
     */
    public void readValue(DocumentNode node) {
        this.node = node;
    }

    public void readValue(InputStream value) throws IOException {
        if (node == null) {
            super.readValue(value);
        }
    }

    @Override
    public void writeValue(OutputStream out) throws IOException {
        if (node == null) {
            super.writeValue(out);
            return;
        }

        try (DocumentInputStream dis = createDocumentInputStream()) {
            IOUtils.copy(dis, out);
        }
    }

    /**
     * Get bytes directly.
     */
    public byte[] getValue() {
        if (node == null) {
            return super.getValue();
        }

        try (DocumentInputStream dis = createDocumentInputStream()) {
            return IOUtils.toByteArray(dis, node.getSize());
        } catch (IOException e) {
            return null;
        }
    }

    /**
     * Set bytes directly.
     * <p>
     * updating the linked document node/msg file directly would be unexpected,
     * so we remove the link and act as a ByteChunk from then
     */
    public void setValue(byte[] value) {
        node = null;
        super.setValue(value);
    }

    private DocumentInputStream createDocumentInputStream() throws IOException {
        return ((DirectoryNode) node.getParent()).createDocumentInputStream(node);
    }
}

⏎ org/apache/poi/hsmf/datatypes/ByteChunkDeferred.java

Or download all of them as a single archive file:

File name: poi-scratchpad-5.2.3-src.zip
File size: 1238744 bytes
Release date: 2022-09-09
Download 

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