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jeremybenn |
/* Native2ASCII.java - native2ascii program
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Copyright (C) 2003, 2007, 2008 Free Software Foundation, Inc.
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This file is part of GNU Classpath.
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GNU Classpath is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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GNU Classpath is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GNU Classpath; see the file COPYING. If not, write to the
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Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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02110-1301 USA.
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Linking this library statically or dynamically with other modules is
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making a combined work based on this library. Thus, the terms and
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conditions of the GNU General Public License cover the whole
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combination.
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As a special exception, the copyright holders of this library give you
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permission to link this library with independent modules to produce an
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executable, regardless of the license terms of these independent
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modules, and to copy and distribute the resulting executable under
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terms of your choice, provided that you also meet, for each linked
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independent module, the terms and conditions of the license of that
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module. An independent module is a module which is not derived from
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or based on this library. If you modify this library, you may extend
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this exception to your version of the library, but you are not
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obligated to do so. If you do not wish to do so, delete this
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exception statement from your version. */
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package gnu.classpath.tools.native2ascii;
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import gnu.classpath.tools.common.ClasspathToolParser;
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import gnu.classpath.tools.getopt.FileArgumentCallback;
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import gnu.classpath.tools.getopt.Option;
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import gnu.classpath.tools.getopt.OptionException;
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import gnu.classpath.tools.getopt.Parser;
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import java.io.BufferedReader;
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import java.io.BufferedWriter;
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import java.io.FileInputStream;
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import java.io.FileOutputStream;
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import java.io.InputStream;
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import java.io.InputStreamReader;
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import java.io.OutputStream;
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import java.io.OutputStreamWriter;
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import java.io.PrintWriter;
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/**
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* Native2ASCII main program.
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* @author Ito Kazumitsu <kaz@maczuka.gcd.org>
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*/
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public class Native2ASCII
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{
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// Input file.
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String input;
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// Output file.
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String output;
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// Encoding to use.
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String encoding;
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// True for reverse operation.
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boolean reversed;
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private class HandleFile extends FileArgumentCallback
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{
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public HandleFile()
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{
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}
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public void notifyFile(String fileArgument)
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throws OptionException
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{
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if (input == null)
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input = fileArgument;
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else if (output == null)
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output = fileArgument;
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else
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throw new OptionException(Messages.getString("Native2ASCII.TooManyFiles")); //$NON-NLS-1$
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}
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}
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private Parser createParser()
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{
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Parser result = new ClasspathToolParser("native2ascii", true); //$NON-NLS-1$
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result.setHeader(Messages.getString("Native2ASCII.Usage")); //$NON-NLS-1$
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result.add(new Option("encoding", Messages.getString("Native2ASCII.EncodingHelp"), Messages.getString("Native2ASCII.EncodingArgName")) //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$
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{
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public void parsed(String argument) throws OptionException
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{
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if (encoding != null)
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throw new OptionException(Messages.getString("Native2ASCII.EncodingSpecified")); //$NON-NLS-1$
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encoding = argument;
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}
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});
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result.add(new Option("reverse", Messages.getString("Native2ASCII.ReverseHelp")) //$NON-NLS-1$ //$NON-NLS-2$
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{
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public void parsed(String argument) throws OptionException
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{
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reversed = true;
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}
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});
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// We mistakenly added the extra "d" in "reversed"; now we don't
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// want to remove it, for backward compatibility.
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result.add(new Option("reversed", Messages.getString("Native2ASCII.ReversedHelpCompat")) //$NON-NLS-1$ //$NON-NLS-2$
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{
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public void parsed(String argument) throws OptionException
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{
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reversed = true;
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}
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});
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return result;
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}
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private void run(String[] args)
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{
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Parser argParser = createParser();
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argParser.parse(args, new HandleFile());
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if (encoding == null)
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encoding = System.getProperty("file.encoding"); //$NON-NLS-1$
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try
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{
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InputStream is = (input == null ? System.in
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: new FileInputStream(input));
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OutputStream os = (output == null ? (OutputStream) System.out
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: new FileOutputStream(output));
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BufferedReader rdr = new BufferedReader(new InputStreamReader(is,
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encoding));
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PrintWriter wtr = new PrintWriter(
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new BufferedWriter(
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new OutputStreamWriter(
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os,
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encoding)));
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while (true)
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{
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String s = rdr.readLine();
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if (s == null)
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break;
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StringBuilder sb = new StringBuilder(s.length() + 80);
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for (int i = 0; i < s.length(); i++)
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{
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char c = s.charAt(i);
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if (reversed
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&& i + 6 <= s.length()
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&& s.charAt(i) == '\\'
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&& s.charAt(i + 1) == 'u')
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{
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int num = Integer.parseInt(s.substring(i + 2, i + 6), 16);
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sb.append((char) num);
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i += 5;
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}
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else if ((int)c <= 127 || reversed)
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{
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sb.append(c);
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}
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else
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{
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sb.append("\\u"); //$NON-NLS-1$
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if ((int)c <= 0xff)
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sb.append("00"); //$NON-NLS-1$
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else if ((int)c <= 0xfff)
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sb.append("0"); //$NON-NLS-1$
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sb.append(Integer.toHexString((int) c));
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}
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}
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wtr.println(sb.toString());
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}
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rdr.close();
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wtr.flush();
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wtr.close();
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}
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catch (Exception e)
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{
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e.printStackTrace();
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}
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}
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public static void main(String[] args)
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{
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new Native2ASCII().run(args);
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}
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}
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