poi/src/scratchpad/testcases/org/apache/poi/hwpf/model/TestTextPieceTable.java

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   this work for additional information regarding copyright ownership.
   The ASF licenses this file to You under the Apache License, Version 2.0
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package org.apache.poi.hwpf.model;

import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;

import junit.framework.TestCase;

import org.apache.poi.hwpf.HWPFDocFixture;
import org.apache.poi.hwpf.HWPFDocument;
import org.apache.poi.hwpf.HWPFTestDataSamples;
import org.apache.poi.hwpf.model.io.HWPFFileSystem;

@SuppressWarnings("deprecation")
public final class TestTextPieceTable extends TestCase {
    private HWPFDocFixture _hWPFDocFixture;

    // private String dirname;

    public void testReadWrite() throws Exception {
        FileInformationBlock fib = _hWPFDocFixture._fib;
        byte[] mainStream = _hWPFDocFixture._mainStream;
        byte[] tableStream = _hWPFDocFixture._tableStream;
        int fcMin = fib.getFibBase().getFcMin();

        ComplexFileTable cft = new ComplexFileTable(mainStream, tableStream,
                fib.getFcClx(), fcMin);

        HWPFFileSystem fileSys = new HWPFFileSystem();

        cft.writeTo(fileSys);
        ByteArrayOutputStream tableOut = fileSys.getStream("1Table");
        ByteArrayOutputStream mainOut = fileSys.getStream("WordDocument");

        byte[] newTableStream = tableOut.toByteArray();
        byte[] newMainStream = mainOut.toByteArray();

        ComplexFileTable newCft = new ComplexFileTable(newMainStream,
                newTableStream, 0, 0);

        TextPieceTable oldTextPieceTable = cft.getTextPieceTable();
        TextPieceTable newTextPieceTable = newCft.getTextPieceTable();

        assertEquals(oldTextPieceTable, newTextPieceTable);
    }

    /**
     * Check that we do the positions correctly when working with pure-ascii
     */
    public void testAsciiParts() throws Exception {
        HWPFDocument doc = HWPFTestDataSamples
                .openSampleFile("ThreeColHeadFoot.doc");
        TextPieceTable tbl = doc.getTextTable();

        // All ascii, so stored in one big lump
        assertEquals(1, tbl.getTextPieces().size());
        TextPiece tp = tbl.getTextPieces().get(0);

        assertEquals(0, tp.getStart());
        assertEquals(339, tp.getEnd());
        assertEquals(339, tp.characterLength());
        assertEquals(339, tp.bytesLength());
        assertTrue(tp.getStringBuilder().toString()
                .startsWith("This is a sample word document"));

        // Save and re-load
        HWPFDocument docB = saveAndReload(doc);
        tbl = docB.getTextTable();

        assertEquals(1, tbl.getTextPieces().size());
        tp = tbl.getTextPieces().get(0);

        assertEquals(0, tp.getStart());
        assertEquals(339, tp.getEnd());
        assertEquals(339, tp.characterLength());
        assertEquals(339, tp.bytesLength());
        assertTrue(tp.getStringBuilder().toString()
                .startsWith("This is a sample word document"));
    }

    /**
     * Check that we do the positions correctly when working with a mix ascii,
     * unicode file
     */
    public void testUnicodeParts() throws Exception {
        HWPFDocument doc = HWPFTestDataSamples
                .openSampleFile("HeaderFooterUnicode.doc");
        TextPieceTable tbl = doc.getTextTable();

        // In three bits, split every 512 bytes
        assertEquals(3, tbl.getTextPieces().size());
        TextPiece tpA = tbl.getTextPieces().get(0);
        TextPiece tpB = tbl.getTextPieces().get(1);
        TextPiece tpC = tbl.getTextPieces().get(2);

        assertTrue(tpA.isUnicode());
        assertTrue(tpB.isUnicode());
        assertTrue(tpC.isUnicode());

        assertEquals(256, tpA.characterLength());
        assertEquals(256, tpB.characterLength());
        assertEquals(19, tpC.characterLength());

        assertEquals(512, tpA.bytesLength());
        assertEquals(512, tpB.bytesLength());
        assertEquals(38, tpC.bytesLength());

        assertEquals(0, tpA.getStart());
        assertEquals(256, tpA.getEnd());
        assertEquals(256, tpB.getStart());
        assertEquals(512, tpB.getEnd());
        assertEquals(512, tpC.getStart());
        assertEquals(531, tpC.getEnd());

        // Save and re-load
        HWPFDocument docB = saveAndReload(doc);
        tbl = docB.getTextTable();

        assertEquals(3, tbl.getTextPieces().size());
        tpA = tbl.getTextPieces().get(0);
        tpB = tbl.getTextPieces().get(1);
        tpC = tbl.getTextPieces().get(2);

        assertTrue(tpA.isUnicode());
        assertTrue(tpB.isUnicode());
        assertTrue(tpC.isUnicode());

        assertEquals(256, tpA.characterLength());
        assertEquals(256, tpB.characterLength());
        assertEquals(19, tpC.characterLength());

        assertEquals(512, tpA.bytesLength());
        assertEquals(512, tpB.bytesLength());
        assertEquals(38, tpC.bytesLength());

        assertEquals(0, tpA.getStart());
        assertEquals(256, tpA.getEnd());
        assertEquals(256, tpB.getStart());
        assertEquals(512, tpB.getEnd());
        assertEquals(512, tpC.getStart());
        assertEquals(531, tpC.getEnd());
    }

    protected HWPFDocument saveAndReload(HWPFDocument doc) throws Exception {
        ByteArrayOutputStream baos = new ByteArrayOutputStream();
        doc.write(baos);

        return new HWPFDocument(new ByteArrayInputStream(baos.toByteArray()));
    }

    @Override
    protected void setUp() throws Exception {
        super.setUp();
        System.setProperty("org.apache.poi.hwpf.preserveTextTable",
                Boolean.TRUE.toString());

        _hWPFDocFixture = new HWPFDocFixture(this,
                HWPFDocFixture.DEFAULT_TEST_FILE);
        _hWPFDocFixture.setUp();
    }

    @Override
    protected void tearDown() throws Exception {
        _hWPFDocFixture.tearDown();
        _hWPFDocFixture = null;

        System.setProperty("org.apache.poi.hwpf.preserveTextTable",
                Boolean.FALSE.toString());
        super.tearDown();
    }

}