utfencodertool.java.svn-base

来自「cqME :java framework for TCK test.」· SVN-BASE 代码 · 共 151 行

/*
 * $Id$
 *
 * Copyright 1996-2007 Sun Microsystems, Inc. All Rights Reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License version
 * 2 only, as published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
 * General Public License version 2 for more details (a copy is
 * included at /legal/license.txt).
 *
 * You should have received a copy of the GNU General Public License
 * version 2 along with this work; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
 * 02110-1301 USA
 *
 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa
 * Clara, CA 95054 or visit www.sun.com if you need additional
 * information or have any questions.
 *
 */
package com.sun.tck.j2me.utils;

import com.sun.tck.cldc.javatest.util.UTFConverter;
import java.io.File;
import java.io.FileOutputStream;
import java.io.FileReader;
import java.io.IOException;
import java.io.OutputStream;
import java.io.StreamTokenizer;
import java.util.ArrayList;
import java.util.List;

/**
 * Command line tool for converting plain text files to UTF encoded files.
 * To be used for building files like <code>agent.dat</code> from editable
 * sources.
 * <p>
 * Usage:
 * <code>
 *      java -cp j2mefw_jt.jar com.sun.tck.j2me.utils.UTFEncoderTool
 *              -in &lt;input_file&gt; -out &lt;output_file&gt;
 * </code>
 * <p>
 * Breaks the input into sequence of words delimited by whitespaces, 
 * then builds an array of <code>String</code> from this sequence and encodes it
 * using {@link com.sun.tck.cldc.javatest.util.UTFConverter}.
 */
public class UTFEncoderTool {
    
    /** Creates a new instance of UTFEncoderTool */
    public UTFEncoderTool(String[] args) {
        decodeArgs(args);
    }
    
    public static void main(String[] args) {
        new UTFEncoderTool(args).run();
    }
    
    public void run() {
        String[] args;
        
        try {
            args = readStrings(plainFile);
        } catch (Exception e) {
            throw new RuntimeException("Error reading input file "
                    + plainFile.getPath() + ": " + e.getMessage(), e);
        }
        try {
            encodeAndWrite(args, encodedFile);
        } catch (Exception e) {
            throw new RuntimeException("Error writing output file "
                    + encodedFile.getPath() + ": " + e.getMessage(), e);
        }
    }
    
    private String[] readStrings(File inFile) throws IOException {
        FileReader reader = null;
        
        try {
            StreamTokenizer in;
            List<String> args = new ArrayList<String>();
            
            reader = new FileReader(inFile);
            in = new StreamTokenizer(reader);
            in.resetSyntax();
            in.whitespaceChars(0, 32);
            in.wordChars(33, '\uFFFF');
readInputLoop:            
            while (true) {
                in.nextToken();
                switch (in.ttype) {
                case StreamTokenizer.TT_EOF:
                    break readInputLoop;
                case StreamTokenizer.TT_WORD:
                    args.add(in.sval);
                    break;
                default:
                    throw new RuntimeException("Invalid input file: "
                            + inFile.getPath());
                }
            }
            return args.toArray(new String[args.size()]);
        } finally {
            if (reader != null) {
                reader.close();
            }
        }
    }
    
    private void encodeAndWrite(String[] args, File outFile)
            throws IOException {
        OutputStream out = null;
        
        try {
            out = new FileOutputStream(outFile, /* append */ false);
            UTFConverter.stringsToUTFStream(args, out);
        } finally {
            if (out != null) {
                out.close();
            }
        }
    }
    
    private void decodeArgs(String[] args) {
        for (int i = 0; i < args.length; i++) {
            if (args[i].equals("-in") && (i + 1 < args.length)) {
                plainFile = new File(args[++i]);
            } else if (args[i].equals("-out") && (i + 1 < args.length)) {
                encodedFile = new File(args[++i]);
            }
        }
        if (plainFile == null) {
            throw new RuntimeException("Must specify input plain file with " 
                    + "-in argument");
        }
        if (encodedFile == null) {
            throw new RuntimeException("Must specify output UTF-8 encoded file"
                    + " with -out argument");
        }
    }
    
    private File plainFile;
    private File encodedFile;
}