sharedstrings.java

实现JAVA界面的代码GWT

// Decompiled by Jad v1.5.7g. Copyright 2000 Pavel Kouznetsov.
// Jad home page: http://www.geocities.com/SiliconValley/Bridge/8617/jad.html
// Decompiler options: packimports(3) fieldsfirst ansi 
// Source File Name:   SharedStrings.java

package jxl.write.biff;

import java.io.IOException;
import java.util.*;

// Referenced classes of package jxl.write.biff:
//            SSTRecord, ExtendedSSTRecord, SSTContinueRecord, File

class SharedStrings
{

    private HashMap strings;
    private ArrayList stringList;
    private int totalOccurrences;

    public SharedStrings()
    {
        strings = new HashMap(100);
        stringList = new ArrayList(100);
        totalOccurrences = 0;
    }

    public int getIndex(String s)
    {
        Integer i = (Integer)strings.get(s);
        if(i == null)
        {
            i = new Integer(strings.size());
            strings.put(s, i);
            stringList.add(s);
        }
        totalOccurrences++;
        return i.intValue();
    }

    public String get(int i)
    {
        return (String)stringList.get(i);
    }

    public void write(File outputFile)
        throws IOException
    {
        int charsLeft = 0;
        String curString = null;
        SSTRecord sst = new SSTRecord(totalOccurrences, stringList.size());
        ExtendedSSTRecord extsst = new ExtendedSSTRecord(stringList.size());
        int bucketSize = extsst.getNumberOfStringsPerBucket();
        Iterator i = stringList.iterator();
        int stringIndex;
        for(stringIndex = 0; i.hasNext() && charsLeft == 0; stringIndex++)
        {
            curString = (String)i.next();
            int relativePosition = sst.getOffset() + 4;
            charsLeft = sst.add(curString);
            if(stringIndex % bucketSize == 0)
                extsst.addString(outputFile.getPos(), relativePosition);
        }

        outputFile.write(sst);
        if(charsLeft != 0 || i.hasNext())
        {
            SSTContinueRecord cont = createContinueRecord(curString, charsLeft, outputFile);
            do
            {
                if(!i.hasNext())
                    break;
                curString = (String)i.next();
                int relativePosition = cont.getOffset() + 4;
                charsLeft = cont.add(curString);
                if(stringIndex % bucketSize == 0)
                    extsst.addString(outputFile.getPos(), relativePosition);
                stringIndex++;
                if(charsLeft != 0)
                {
                    outputFile.write(cont);
                    cont = createContinueRecord(curString, charsLeft, outputFile);
                }
            } while(true);
            outputFile.write(cont);
        }
        outputFile.write(extsst);
    }

    private SSTContinueRecord createContinueRecord(String curString, int charsLeft, File outputFile)
        throws IOException
    {
        SSTContinueRecord cont = null;
        do
        {
            if(charsLeft == 0)
                break;
            cont = new SSTContinueRecord();
            if(charsLeft == curString.length() || curString.length() == 0)
                charsLeft = cont.setFirstString(curString, true);
            else
                charsLeft = cont.setFirstString(curString.substring(curString.length() - charsLeft), false);
            if(charsLeft != 0)
            {
                outputFile.write(cont);
                cont = new SSTContinueRecord();
            }
        } while(true);
        return cont;
    }
}