// Uncolored, plain source file:  setbuf.java
//    randaccess.java by Steven R. Brandt
//    <p>
//    An example file explaining how to use
//    com.stevesoft.pat, com.stevesoft.pat.wrap,
//    and com.stevesoft.pat.apps
//    <p>
//    This software comes without express or implied warranty.
//    No claim is made about the suitability of this software for
//    any purpose and neither I nor SteveSoft shall be liable for
//    damages suffered by the user of this software. 
import com.stevesoft.pat.*;
import com.stevesoft.pat.wrap.*;
import java.io.*;
/*
   By default Regex searches strings.  When it does
   a text substitution it puts the result in a StringBuffer,
   appending different bits of data as it goes.

   However, it doesn't have to do this.  It asks the
   StringLike object that it is searching for a new
   BasicStringBuffer class.

   By default, package com.stevesoft.pat.wrap has three:
   1) CharArrayBufferWrap -- the data is written to a
      char[] Object.
   2) WriterWrap -- the output is written to a Writer
      object.
   3) StringBufferWrap -- the data is written to a
      StringBuffer Object.
   */
public class setbuf {
  public static void main(String[] args) throws Exception {

    // Create the buffer we want to use to capture the output.
    Writer out = new OutputStreamWriter(System.out);
    final WriterWrap ww = new WriterWrap(out);

    // Make a StringLike that returns it from its
    // newStringBufferLike() method.
    String s = "this String has a foo in it.";
    StringLike sk = new StringWrap(s) {
      public BasicStringBufferLike newStringBufferLike() {
        return ww;
      }
    };

    // Compile a regular expression.
    Regex r = new Regex("foo","bar");

    // Do the replacement.
    r.replaceAll(sk);

    // Print the result.
    out.flush();
  }
}