//
// This software is now distributed according to
// the Lesser Gnu Public License.  Please see
// http://www.gnu.org/copyleft/lesser.txt for
// the details.
//    -- Happy Computing!
//
package com.stevesoft.pat.wrap;

import java.io.*;

import com.stevesoft.pat.*;

/**
 * Allows the outcome of a replaceAll() or replaceFirst() to be directed to a
 * Writer rather than a String.
 * <p>
 * The method toStringLike() cannot work, however. This means that the return
 * value of replaceAll() will be null if this Object is used as the
 * StringBufferLike.
 */
public class WriterWrap implements BasicStringBufferLike
{
  Writer w;

  public WriterWrap(Writer w)
  {
    this.w = w;
  }

  public void append(char c)
  {
    try
    {
      w.write((int) c);
    } catch (IOException ioe)
    {
    }
  }

  public void append(String s)
  {
    try
    {
      w.write(s);
    } catch (IOException ioe)
    {
    }
  }

  /** This operation can't really be done. */
  public StringLike toStringLike()
  {
    return null;
  }

  public Object unwrap()
  {
    return w;
  }
}
