testescherbliprecord.java

来自「EXCEL read and write」· Java 代码 · 共 157 行

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   this work for additional information regarding copyright ownership.
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   (the "License"); you may not use this file except in compliance with
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       http://www.apache.org/licenses/LICENSE-2.0

   Unless required by applicable law or agreed to in writing, software
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package org.apache.poi.ddf;

import junit.framework.TestCase;
import org.apache.poi.util.HexRead;
import org.apache.poi.util.HexDump;

import java.io.IOException;
import java.io.File;
import java.io.FileInputStream;
import java.util.Iterator;
import java.util.Arrays;

/**
 * Test read/serialize of escher blip records
 *
 * @author Yegor Kozlov
 */
public class TestEscherBlipRecord extends TestCase
{
    protected String cwd = System.getProperty("DDF.testdata.path");

    //test reading/serializing of a PNG blip
    public void testReadPNG() throws IOException {
        //provided in bug-44886
        byte[] data = read(new File(cwd, "Container.dat"));

        EscherContainerRecord record = new EscherContainerRecord();
        record.fillFields(data, 0, new DefaultEscherRecordFactory());
        EscherContainerRecord bstore = (EscherContainerRecord)record.getChildRecords().get(1);
        EscherBSERecord bse1 = (EscherBSERecord)bstore.getChildRecords().get(0);
        assertEquals(EscherBSERecord.BT_PNG, bse1.getBlipTypeWin32());
        assertEquals(EscherBSERecord.BT_PNG, bse1.getBlipTypeMacOS());
        assertTrue(Arrays.equals(new byte[]{
            0x65, 0x07, 0x4A, (byte)0x8D, 0x3E, 0x42, (byte)0x8B, (byte)0xAC,
            0x1D, (byte)0x89, 0x35, 0x4F, 0x48, (byte)0xFA, 0x37, (byte)0xC2
        }, bse1.getUid()));
        assertEquals(255, bse1.getTag());
        assertEquals(32308, bse1.getSize());

        EscherBitmapBlip blip1 = (EscherBitmapBlip)bse1.getBlipRecord();
        assertEquals(0x6E00, blip1.getOptions());
        assertEquals(EscherBitmapBlip.RECORD_ID_PNG, blip1.getRecordId());
        assertTrue(Arrays.equals(new byte[]{
            0x65, 0x07, 0x4A, (byte)0x8D, 0x3E, 0x42, (byte)0x8B, (byte)0xAC,
            0x1D, (byte)0x89, 0x35, 0x4F, 0x48, (byte)0xFA, 0x37, (byte)0xC2
        }, blip1.getUID()));

        //serialize and read again
        byte[] ser = bse1.serialize();
        EscherBSERecord bse2 = new EscherBSERecord();
        bse2.fillFields(ser, 0, new DefaultEscherRecordFactory());
        assertEquals(bse1.getRecordId(), bse2.getRecordId());
        assertEquals(bse1.getBlipTypeWin32(), bse2.getBlipTypeWin32());
        assertEquals(bse1.getBlipTypeMacOS(), bse2.getBlipTypeMacOS());
        assertTrue(Arrays.equals(bse1.getUid(), bse2.getUid()));
        assertEquals(bse1.getTag(), bse2.getTag());
        assertEquals(bse1.getSize(), bse2.getSize());

        EscherBitmapBlip blip2 = (EscherBitmapBlip)bse1.getBlipRecord();
        assertEquals(blip1.getOptions(), blip2.getOptions());
        assertEquals(blip1.getRecordId(), blip2.getRecordId());
        assertEquals(blip1.getUID(), blip2.getUID());

        assertTrue(Arrays.equals(blip1.getPicturedata(), blip1.getPicturedata()));
    }

    //test reading/serializing of a PICT metafile
    public void testReadPICT() throws IOException {
        //provided in bug-44886
        byte[] data = read(new File(cwd, "Container.dat"));

        EscherContainerRecord record = new EscherContainerRecord();
        record.fillFields(data, 0, new DefaultEscherRecordFactory());
        EscherContainerRecord bstore = (EscherContainerRecord)record.getChildRecords().get(1);
        EscherBSERecord bse1 = (EscherBSERecord)bstore.getChildRecords().get(1);
        //System.out.println(bse1);
        assertEquals(EscherBSERecord.BT_WMF, bse1.getBlipTypeWin32());
        assertEquals(EscherBSERecord.BT_PICT, bse1.getBlipTypeMacOS());
        assertTrue(Arrays.equals(new byte[]{
            (byte)0xC7, 0x15, 0x69, 0x2D, (byte)0xE5, (byte)0x89, (byte)0xA3, 0x6F,
            0x66, 0x03, (byte)0xD6, 0x24, (byte)0xF7, (byte)0xDB, 0x1D, 0x13
        }, bse1.getUid()));
        assertEquals(255, bse1.getTag());
        assertEquals(1133, bse1.getSize());

        EscherMetafileBlip blip1 = (EscherMetafileBlip)bse1.getBlipRecord();
        assertEquals(0x5430, blip1.getOptions());
        assertEquals(EscherMetafileBlip.RECORD_ID_PICT, blip1.getRecordId());
        assertTrue(Arrays.equals(new byte[]{
            0x57, 0x32, 0x7B, (byte)0x91, 0x23, 0x5D, (byte)0xDB, 0x36,
            0x7A, (byte)0xDB, (byte)0xFF, 0x17, (byte)0xFE, (byte)0xF3, (byte)0xA7, 0x05
        }, blip1.getUID()));
        assertTrue(Arrays.equals(new byte[]{
            (byte)0xC7, 0x15, 0x69, 0x2D, (byte)0xE5, (byte)0x89, (byte)0xA3, 0x6F,
            0x66, 0x03, (byte)0xD6, 0x24, (byte)0xF7, (byte)0xDB, 0x1D, 0x13
        }, blip1.getPrimaryUID()));

        //serialize and read again
        byte[] ser = bse1.serialize();
        EscherBSERecord bse2 = new EscherBSERecord();
        bse2.fillFields(ser, 0, new DefaultEscherRecordFactory());
        assertEquals(bse1.getRecordId(), bse2.getRecordId());
        assertEquals(bse1.getOptions(), bse2.getOptions());
        assertEquals(bse1.getBlipTypeWin32(), bse2.getBlipTypeWin32());
        assertEquals(bse1.getBlipTypeMacOS(), bse2.getBlipTypeMacOS());
        assertTrue(Arrays.equals(bse1.getUid(), bse2.getUid()));
        assertEquals(bse1.getTag(), bse2.getTag());
        assertEquals(bse1.getSize(), bse2.getSize());

        EscherMetafileBlip blip2 = (EscherMetafileBlip)bse1.getBlipRecord();
        assertEquals(blip1.getOptions(), blip2.getOptions());
        assertEquals(blip1.getRecordId(), blip2.getRecordId());
        assertEquals(blip1.getUID(), blip2.getUID());
        assertEquals(blip1.getPrimaryUID(), blip2.getPrimaryUID());

        assertTrue(Arrays.equals(blip1.getPicturedata(), blip1.getPicturedata()));
    }

    //integral test: check that the read-write-read round trip is consistent
    public void testContainer() throws IOException {
        byte[] data = read(new File(cwd, "Container.dat"));

        EscherContainerRecord record = new EscherContainerRecord();
        record.fillFields(data, 0, new DefaultEscherRecordFactory());

        byte[] ser = record.serialize();
        assertTrue(Arrays.equals(data, ser));
    }

    private byte[] read(File file) throws IOException {
        byte[] data = new byte[(int)file.length()];
        FileInputStream is = new FileInputStream(file);
        is.read(data);
        is.close();
        return data;
    }

}