TestOLE2Embedding.java

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package org.apache.poi.hssf.usermodel;

import static org.junit.jupiter.api.Assertions.assertArrayEquals;
import static org.junit.jupiter.api.Assertions.assertDoesNotThrow;
import static org.junit.jupiter.api.Assertions.assertEquals;

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

import org.apache.commons.io.output.UnsynchronizedByteArrayOutputStream;
import org.apache.poi.POIDataSamples;
import org.apache.poi.hssf.HSSFTestDataSamples;
import org.apache.poi.poifs.filesystem.DirectoryNode;
import org.apache.poi.poifs.filesystem.Ole10Native;
import org.apache.poi.poifs.filesystem.POIFSFileSystem;
import org.apache.poi.ss.usermodel.ClientAnchor.AnchorType;
import org.apache.poi.ss.usermodel.CreationHelper;
import org.apache.poi.util.LocaleUtil;
import org.junit.jupiter.api.Test;

final class TestOLE2Embedding {

    @Test
    void testEmbedding() throws Exception {
        // This used to break, until bug #43116 was fixed
        try (HSSFWorkbook workbook = HSSFTestDataSamples.openSampleWorkbook("ole2-embedding.xls")) {
            // Check we can get at the Escher layer still
            assertDoesNotThrow(workbook::getAllPictures);
        }
    }

    @Test
    void testEmbeddedObjects() throws Exception {
        try (HSSFWorkbook workbook = HSSFTestDataSamples.openSampleWorkbook("ole2-embedding.xls")) {
            List<HSSFObjectData> objects = workbook.getAllEmbeddedObjects();
            assertEquals(2, objects.size(), "Wrong number of objects");
            assertEquals("MBD06CAB431", objects.get(0).getDirectory().getName(), "Wrong name for first object");
            assertEquals("MBD06CAC85A", objects.get(1).getDirectory().getName(), "Wrong name for second object");
        }
    }

    @Test
    void testReallyEmbedSomething() throws Exception {
        try (HSSFWorkbook wb1 = new HSSFWorkbook();
             POIFSFileSystem pptPoifs = getSamplePPT();
             POIFSFileSystem xlsPoifs = getSampleXLS()) {
            HSSFSheet sheet = wb1.createSheet();
            HSSFPatriarch patriarch = sheet.createDrawingPatriarch();

            byte[] pictureData = HSSFTestDataSamples.getTestDataFileContent("logoKarmokar4.png");
            byte[] picturePPT = POIDataSamples.getSlideShowInstance().readFile("clock.jpg");
            int imgIdx = wb1.addPicture(pictureData, HSSFWorkbook.PICTURE_TYPE_PNG);

            int pptIdx = wb1.addOlePackage(pptPoifs, "Sample-PPT", "sample.ppt", "sample.ppt");
            int imgPPT = wb1.addPicture(picturePPT, HSSFWorkbook.PICTURE_TYPE_JPEG);
            int xlsIdx = wb1.addOlePackage(xlsPoifs, "Sample-XLS", "sample.xls", "sample.xls");
            int txtIdx = wb1.addOlePackage(getSampleTXT(), "Sample-TXT", "sample.txt", "sample.txt");

            int rowoffset = 5;
            int coloffset = 5;

            CreationHelper ch = wb1.getCreationHelper();
            HSSFClientAnchor anchor = (HSSFClientAnchor) ch.createClientAnchor();
            anchor.setAnchor((short) (2 + coloffset), 1 + rowoffset, 0, 0, (short) (3 + coloffset), 5 + rowoffset, 0, 0);
            anchor.setAnchorType(AnchorType.DONT_MOVE_AND_RESIZE);

            patriarch.createObjectData(anchor, pptIdx, imgPPT);

            anchor = (HSSFClientAnchor) ch.createClientAnchor();
            anchor.setAnchor((short) (5 + coloffset), 1 + rowoffset, 0, 0, (short) (6 + coloffset), 5 + rowoffset, 0, 0);
            anchor.setAnchorType(AnchorType.DONT_MOVE_AND_RESIZE);

            patriarch.createObjectData(anchor, xlsIdx, imgIdx);

            anchor = (HSSFClientAnchor) ch.createClientAnchor();
            anchor.setAnchor((short) (3 + coloffset), 10 + rowoffset, 0, 0, (short) (5 + coloffset), 11 + rowoffset, 0, 0);
            anchor.setAnchorType(AnchorType.DONT_MOVE_AND_RESIZE);

            patriarch.createObjectData(anchor, txtIdx, imgIdx);

            anchor = (HSSFClientAnchor) ch.createClientAnchor();
            anchor.setAnchor((short) (1 + coloffset), -2 + rowoffset, 0, 0, (short) (7 + coloffset), 14 + rowoffset, 0, 0);
            anchor.setAnchorType(AnchorType.DONT_MOVE_AND_RESIZE);

            HSSFSimpleShape circle = patriarch.createSimpleShape(anchor);
            circle.setShapeType(HSSFSimpleShape.OBJECT_TYPE_OVAL);
            circle.setNoFill(true);

            try (HSSFWorkbook wb2 = HSSFTestDataSamples.writeOutAndReadBack(wb1)) {
                UnsynchronizedByteArrayOutputStream bos = UnsynchronizedByteArrayOutputStream.builder().get();
                HSSFObjectData od = wb2.getAllEmbeddedObjects().get(0);
                Ole10Native ole10 = Ole10Native.createFromEmbeddedOleObject((DirectoryNode) od.getDirectory());
                bos.reset();
                pptPoifs.writeFilesystem(bos);
                assertArrayEquals(ole10.getDataBuffer(), bos.toByteArray());

                od = wb2.getAllEmbeddedObjects().get(1);
                ole10 = Ole10Native.createFromEmbeddedOleObject((DirectoryNode) od.getDirectory());
                bos.reset();
                xlsPoifs.writeFilesystem(bos);
                assertArrayEquals(ole10.getDataBuffer(), bos.toByteArray());

                od = wb2.getAllEmbeddedObjects().get(2);
                ole10 = Ole10Native.createFromEmbeddedOleObject((DirectoryNode) od.getDirectory());
                assertArrayEquals(ole10.getDataBuffer(), getSampleTXT());
            }
        }
    }

    static POIFSFileSystem getSamplePPT() throws IOException {
        // scratchpad classes are not available, so we use something pre-cooked
        InputStream is = POIDataSamples.getSlideShowInstance().openResourceAsStream("with_textbox.ppt");
        POIFSFileSystem poifs = new POIFSFileSystem(is);
        is.close();

        return poifs;
    }

    static POIFSFileSystem getSampleXLS() throws IOException {
        UnsynchronizedByteArrayOutputStream bos = UnsynchronizedByteArrayOutputStream.builder().get();
        try (HSSFWorkbook wb = new HSSFWorkbook()) {
            HSSFSheet sheet = wb.createSheet();
            sheet.createRow(5).createCell(2).setCellValue("yo dawg i herd you like embeddet objekts, so we put an ole in your ole so you can save a file while you save a file");

            wb.write(bos);
        }

        return new POIFSFileSystem(bos.toInputStream());
    }

    static byte[] getSampleTXT() {
        return "All your base are belong to us".getBytes(LocaleUtil.CHARSET_1252);
    }
}