package org.apidesign.delegatingwriter;

import java.io.IOException;

import java.io.Writer;

// BEGIN: writer.CountingWriter

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

 *

 * @author Jaroslav Tulach

 */

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 {

    }

}