poifsviewer.java

java 报表 to office文档： 本包由java语言开发

/* ====================================================================
   Copyright 2002-2004   Apache Software Foundation

   Licensed under the Apache License, Version 2.0 (the "License");
   you may not use this file except in compliance with the License.
   You may obtain a copy of the License at

       http://www.apache.org/licenses/LICENSE-2.0

   Unless required by applicable law or agreed to in writing, software
   distributed under the License is distributed on an "AS IS" BASIS,
   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   See the License for the specific language governing permissions and
   limitations under the License.
==================================================================== */
        

package org.apache.poi.poifs.dev;

import java.io.*;

import java.util.*;

import org.apache.poi.poifs.filesystem.POIFSFileSystem;

/**
 * A simple viewer for POIFS files
 *
 * @author Marc Johnson (mjohnson at apache dot org)
 */

public class POIFSViewer
{

    /**
     * Display the contents of multiple POIFS files
     *
     * @param args the names of the files to be displayed
     */

    public static void main(final String args[])
    {
        if (args.length < 0)
        {
            System.err.println("Must specify at least one file to view");
            System.exit(1);
        }
        boolean printNames = (args.length > 1);

        for (int j = 0; j < args.length; j++)
        {
            viewFile(args[ j ], printNames);
        }
    }

    private static void viewFile(final String filename,
                                 final boolean printName)
    {
        if (printName)
        {
            StringBuffer flowerbox = new StringBuffer();

            flowerbox.append(".");
            for (int j = 0; j < filename.length(); j++)
            {
                flowerbox.append("-");
            }
            flowerbox.append(".");
            System.out.println(flowerbox);
            System.out.println("|" + filename + "|");
            System.out.println(flowerbox);
        }
        try
        {
            POIFSViewable fs      =
                new POIFSFileSystem(new FileInputStream(filename));
            List          strings = POIFSViewEngine.inspectViewable(fs, true,
                                        0, "  ");
            Iterator      iter    = strings.iterator();

            while (iter.hasNext())
            {
                System.out.print(iter.next());
            }
        }
        catch (IOException e)
        {
            System.out.println(e.getMessage());
        }
    }
}   // end public class POIFSViewer