testsstrecord.java

Office格式转换代码

/* ====================================================================
 * The Apache Software License, Version 1.1
 *
 * Copyright (c) 2003 The Apache Software Foundation.  All rights
 * reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 *
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in
 *    the documentation and/or other materials provided with the
 *    distribution.
 *
 * 3. The end-user documentation included with the redistribution,
 *    if any, must include the following acknowledgment:
 *       "This product includes software developed by the
 *        Apache Software Foundation (http://www.apache.org/)."
 *    Alternately, this acknowledgment may appear in the software itself,
 *    if and wherever such third-party acknowledgments normally appear.
 *
 * 4. The names "Apache" and "Apache Software Foundation" and
 *    "Apache POI" must not be used to endorse or promote products
 *    derived from this software without prior written permission. For
 *    written permission, please contact [e-mail].
 *
 * 5. Products derived from this software may not be called "Apache",
 *    "Apache POI", nor may "Apache" appear in their name, without
 *    prior written permission of the Apache Software Foundation.
 *
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED.  IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 * ====================================================================
 *
 * This software consists of voluntary contributions made by many
 * individuals on behalf of the Apache Software Foundation.  For more
 * information on the Apache Software Foundation, please see
 * <http://www.apache.org/>.
 */

package org.apache.poi.hssf.record;

import junit.framework.TestCase;
import org.apache.poi.hssf.usermodel.HSSFSheet;
import org.apache.poi.hssf.usermodel.HSSFWorkbook;
import org.apache.poi.util.HexRead;
import org.apache.poi.util.LittleEndian;
import org.apache.poi.util.LittleEndianConsts;

import java.io.*;
import java.util.Arrays;
import java.util.Iterator;

/**
 * @author Marc Johnson (mjohnson at apache dot org)
 * @author Glen Stampoultzis (glens at apache.org)
 */

public class TestSSTRecord
        extends TestCase
{
    private String _test_file_path;
    private static final String _test_file_path_property = "HSSF.testdata.path";

    /**
     * Creates new TestSSTRecord
     *
     * @param name
     */

    public TestSSTRecord( String name )
    {
        super( name );
        _test_file_path = System.getProperty( _test_file_path_property );
    }

    /**
     * test processContinueRecord
     *
     * @exception IOException
     */

    public void testProcessContinueRecord()
            throws IOException
    {
        byte[] testdata = HexRead.readData( _test_file_path + File.separator + "BigSSTRecord" );
        byte[] input = new byte[testdata.length - 4];

        System.arraycopy( testdata, 4, input, 0, input.length );
        SSTRecord record =
                new SSTRecord( LittleEndian.getShort( testdata, 0 ),
                        LittleEndian.getShort( testdata, 2 ), input );
        byte[] continueRecord = HexRead.readData( _test_file_path + File.separator + "BigSSTRecordCR" );

        input = new byte[continueRecord.length - 4];
        System.arraycopy( continueRecord, 4, input, 0, input.length );
        record.processContinueRecord( input );
        assertEquals( 1464, record.getNumStrings() );
        assertEquals( 688, record.getNumUniqueStrings() );
        assertEquals( 688, record.countStrings() );
        byte[] ser_output = record.serialize();
        int offset = 0;
        short type = LittleEndian.getShort( ser_output, offset );

        offset += LittleEndianConsts.SHORT_SIZE;
        short length = LittleEndian.getShort( ser_output, offset );

        offset += LittleEndianConsts.SHORT_SIZE;
        byte[] recordData = new byte[length];

        System.arraycopy( ser_output, offset, recordData, 0, length );
        offset += length;
        SSTRecord testRecord = new SSTRecord( type, length, recordData );

        assertEquals( ContinueRecord.sid,
                LittleEndian.getShort( ser_output, offset ) );
        offset += LittleEndianConsts.SHORT_SIZE;
        length = LittleEndian.getShort( ser_output, offset );
        offset += LittleEndianConsts.SHORT_SIZE;
        byte[] cr = new byte[length];

        System.arraycopy( ser_output, offset, cr, 0, length );
        offset += length;
        assertEquals( offset, ser_output.length );
        testRecord.processContinueRecord( cr );
        assertEquals( record, testRecord );

        // testing based on new bug report
        testdata = HexRead.readData( _test_file_path + File.separator + "BigSSTRecord2" );
        input = new byte[testdata.length - 4];
        System.arraycopy( testdata, 4, input, 0, input.length );
        record = new SSTRecord( LittleEndian.getShort( testdata, 0 ),
                LittleEndian.getShort( testdata, 2 ), input );
        byte[] continueRecord1 = HexRead.readData( _test_file_path + File.separator + "BigSSTRecord2CR1" );

        input = new byte[continueRecord1.length - 4];
        System.arraycopy( continueRecord1, 4, input, 0, input.length );
        record.processContinueRecord( input );
        byte[] continueRecord2 = HexRead.readData( _test_file_path + File.separator + "BigSSTRecord2CR2" );

        input = new byte[continueRecord2.length - 4];
        System.arraycopy( continueRecord2, 4, input, 0, input.length );
        record.processContinueRecord( input );
        byte[] continueRecord3 = HexRead.readData( _test_file_path + File.separator + "BigSSTRecord2CR3" );

        input = new byte[continueRecord3.length - 4];
        System.arraycopy( continueRecord3, 4, input, 0, input.length );
        record.processContinueRecord( input );
        byte[] continueRecord4 = HexRead.readData( _test_file_path + File.separator + "BigSSTRecord2CR4" );

        input = new byte[continueRecord4.length - 4];
        System.arraycopy( continueRecord4, 4, input, 0, input.length );
        record.processContinueRecord( input );
        byte[] continueRecord5 = HexRead.readData( _test_file_path + File.separator + "BigSSTRecord2CR5" );

        input = new byte[continueRecord5.length - 4];
        System.arraycopy( continueRecord5, 4, input, 0, input.length );
        record.processContinueRecord( input );
        byte[] continueRecord6 = HexRead.readData( _test_file_path + File.separator + "BigSSTRecord2CR6" );

        input = new byte[continueRecord6.length - 4];
        System.arraycopy( continueRecord6, 4, input, 0, input.length );
        record.processContinueRecord( input );
        byte[] continueRecord7 = HexRead.readData( _test_file_path + File.separator + "BigSSTRecord2CR7" );

        input = new byte[continueRecord7.length - 4];
        System.arraycopy( continueRecord7, 4, input, 0, input.length );
        record.processContinueRecord( input );
        assertEquals( 158642, record.getNumStrings() );
        assertEquals( 5249, record.getNumUniqueStrings() );
        assertEquals( 5249, record.countStrings() );
        ser_output = record.serialize();
        offset = 0;
        type = LittleEndian.getShort( ser_output, offset );
        offset += LittleEndianConsts.SHORT_SIZE;
        length = LittleEndian.getShort( ser_output, offset );
        offset += LittleEndianConsts.SHORT_SIZE;
        recordData = new byte[length];
        System.arraycopy( ser_output, offset, recordData, 0, length );
        offset += length;
        testRecord = new SSTRecord( type, length, recordData );
        for ( int count = 0; count < 7; count++ )
        {
            assertEquals( ContinueRecord.sid,
                    LittleEndian.getShort( ser_output, offset ) );
            offset += LittleEndianConsts.SHORT_SIZE;
            length = LittleEndian.getShort( ser_output, offset );
            offset += LittleEndianConsts.SHORT_SIZE;
            cr = new byte[length];
            System.arraycopy( ser_output, offset, cr, 0, length );
            testRecord.processContinueRecord( cr );
            offset += length;
        }
        assertEquals( offset, ser_output.length );
        assertEquals( record, testRecord );
        assertEquals( record.countStrings(), testRecord.countStrings() );
    }

    /**
     * Test capability of handling mondo big strings
     *
     * @exception IOException
     */

    public void testHugeStrings()
            throws IOException
    {
        SSTRecord record = new SSTRecord();
        byte[][] bstrings =
                {
                    new byte[9000], new byte[7433], new byte[9002],
                    new byte[16998]
                };
        String[] strings = new String[bstrings.length];
        int total_length = 0;

        for ( int k = 0; k < bstrings.length; k++ )
        {
            Arrays.fill( bstrings[k], (byte) ( 'a' + k ) );
            strings[k] = new String( bstrings[k] );
            record.addString( strings[k] );
            total_length += 3 + bstrings[k].length;
        }

        // add overhead of SST record
        total_length += 8;

        // add overhead of broken strings
        total_length += 4;

        // add overhead of six records
        total_length += ( 6 * 4 );
        byte[] content = new byte[record.getRecordSize()];

        record.serialize( 0, content );
        assertEquals( total_length, content.length );
        for ( int index = 0; index != content.length; )
        {
            short record_type = LittleEndian.getShort( content, index );

            index += LittleEndianConsts.SHORT_SIZE;
            short record_length = LittleEndian.getShort( content, index );

            index += LittleEndianConsts.SHORT_SIZE;
            byte[] data = new byte[record_length];

            System.arraycopy( content, index, data, 0, record_length );
            index += record_length;
            if ( record_type == SSTRecord.sid )