package org.apidesign.delegatingwriter;

 import java.io.IOException;

 import java.io.Writer;

 // BEGIN: writer.CountingWriter

 /** Writer that counts the number of written in characters.

  */

 public class CountingWriter extends Writer {

     private int counter;

     public int getCharacterCount() {

         return counter;

     }

     @Override

     public void write(char[] cbuf, int off, int len) throws IOException {

         counter += len;

     }

     @Override

     public Writer append(CharSequence csq) throws IOException {

         counter += csq.length();

         return this;

     }

 // FINISH: writer.CountingWriter

     @Override

     public Writer append(CharSequence csq, int start, int end) throws IOException {

         counter += (end - start);

         return this;

     }

     @Override

     public Writer append(char c) throws IOException {

         counter++;

         return this;

     }

     @Override

     public void write(int c) throws IOException {

         counter++;

     }

     @Override

     public void write(char[] cbuf) throws IOException {

         counter += cbuf.length;

     }

     @Override

     public void write(String str) throws IOException {

         counter += str.length();

     }

     @Override

     public void write(String str, int off, int len) throws IOException {

         counter += len;

     }

     @Override

     public void flush() throws IOException {

     }

     @Override

     public void close() throws IOException {

     }

 }