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/hwmf/usermodel/HwmfEmbeddedIterator.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.hwmf.usermodel;

import java.io.IOException;
import java.util.ArrayDeque;
import java.util.Deque;
import java.util.Iterator;
import java.util.NoSuchElementException;

import org.apache.commons.io.output.UnsynchronizedByteArrayOutputStream;
import org.apache.poi.hwmf.record.HwmfEscape;
import org.apache.poi.hwmf.record.HwmfEscape.EscapeFunction;
import org.apache.poi.hwmf.record.HwmfEscape.WmfEscapeEMF;
import org.apache.poi.hwmf.record.HwmfFill.HwmfImageRecord;
import org.apache.poi.hwmf.record.HwmfRecord;

public class HwmfEmbeddedIterator implements Iterator<HwmfEmbedded> {

    private final Deque<Iterator<?>> iterStack = new ArrayDeque<>();
    private Object current;

    public HwmfEmbeddedIterator(HwmfPicture wmf) {
        this(wmf.getRecords().iterator());
    }

    public HwmfEmbeddedIterator(Iterator<HwmfRecord> recordIterator) {
        iterStack.add(recordIterator);
    }

    @Override
    public boolean hasNext() {
        if (iterStack.isEmpty()) {
            return false;
        }

        if (current != null) {
            // don't search twice and potentially skip items
            return true;
        }

        Iterator<?> iter;
        do {
            iter = iterStack.peek();
            while (iter.hasNext()) {
                Object obj = iter.next();
                if (obj instanceof HwmfImageRecord) {
                    current = obj;
                    return true;
                }
                if (obj instanceof HwmfEscape && ((HwmfEscape)obj).getEscapeFunction() == EscapeFunction.META_ESCAPE_ENHANCED_METAFILE) {
                    WmfEscapeEMF emfData = ((HwmfEscape)obj).getEscapeData();
                    if (emfData.isValid()) {
                        current = obj;
                        return true;
                    }
                }
            }
            iterStack.pop();
        } while (!iterStack.isEmpty());

        return false;
    }

    @Override
    public HwmfEmbedded next() {
        HwmfEmbedded emb;
        if ((emb = checkHwmfImageRecord()) != null) {
            return emb;
        }
        if ((emb = checkHwmfEscapeRecord()) != null) {
            return emb;
        }

        throw new NoSuchElementException("no further embedded emf records found.");
    }

    private HwmfEmbedded checkHwmfImageRecord() {
        if (!(current instanceof HwmfImageRecord)) {
            return null;
        }

        HwmfImageRecord hir = (HwmfImageRecord)current;
        current = null;

        HwmfEmbedded emb = new HwmfEmbedded();
        emb.setEmbeddedType(HwmfEmbeddedType.BMP);
        emb.setData(hir.getBMPData());

        return emb;
    }


    private HwmfEmbedded checkHwmfEscapeRecord() {
        if (!(current instanceof HwmfEscape)) {
            return null;
        }

        final HwmfEmbedded emb = new HwmfEmbedded();
        emb.setEmbeddedType(HwmfEmbeddedType.EMF);

        try (UnsynchronizedByteArrayOutputStream bos = new UnsynchronizedByteArrayOutputStream()) {
            WmfEscapeEMF img;
            do {
                final HwmfEscape esc = (HwmfEscape)current;
                assert(esc.getEscapeFunction() == EscapeFunction.META_ESCAPE_ENHANCED_METAFILE);

                img = esc.getEscapeData();
                assert(img.isValid());

                bos.write(img.getEmfData());
                current = null;
            } while (img.getRemainingBytes() > 0 && hasNext() && (current instanceof HwmfEscape));

            emb.setData(bos.toByteArray());
            return emb;

        } catch (IOException ignored) {
            // UnsynchronizedByteArrayOutputStream doesn't throw IOException
            return null;
        }
    }
}

⏎ org/apache/poi/hwmf/usermodel/HwmfEmbeddedIterator.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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