unquotedstring.java

用JAVA写的shell程序

// JShell
// Copyright (C) 2000 Jack A. Orenstein
// 
// This program is free software; you can redistribute it and/or
// modify it under the terms of the GNU General Public License as
// published by the Free Software Foundation; either version 2 of
// the License, or (at your option) any later version.
// 
// 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 for more details.
// 
// You should have received a copy of the GNU General Public License
// along with this program; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
// 02111-1307, USA.
// 
// Jack A. Orenstein  [e-mail]

package jshell.commandline;

import java.util.*;
import jshell.*;
import jshell.util.*;

public final class UnquotedString extends CommandElement
{
    // Object interface

    public String toString()
    {
        return _value;
    }


    // CommandElement interface

    public Vector expand()
    {
        return _expander.expand(_value);
    }


    // UnquotedString interface

    public static UnquotedString create(String token)
    {
        return new UnquotedString(token);
    }

    private UnquotedString(String token)
    {
        super(token);
        _value = token;
    }


    private final static CommandElementExpander _expander =
        new CommandElementExpander
        (CommandElementExpander.HANDLE_ESCAPES |
         CommandElementExpander.GLOB_EXPAND);

    private String _value;
}