Tomcat example source code file (CoyoteWriter.java)

This example Tomcat source code file (CoyoteWriter.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" ^TM.

Java - Tomcat tags/keywords

clonenotsupportedexception, clonenotsupportedexception, coyotewriter, coyotewriter, io, ioexception, ioexception, line_sep, object, outputbuffer, printwriter, printwriter

The Tomcat CoyoteWriter.java source code

/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 * 
 *      http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */ 


package org.apache.catalina.connector;

import java.io.IOException;
import java.io.PrintWriter;

/**
 * Coyote implementation of the servlet writer.
 * 
 * @author Remy Maucherat
 */
public class CoyoteWriter
    extends PrintWriter {


    // -------------------------------------------------------------- Constants


    private static final char[] LINE_SEP = { '\r', '\n' };


    // ----------------------------------------------------- Instance Variables


    protected OutputBuffer ob;
    protected boolean error = false;


    // ----------------------------------------------------------- Constructors


    public CoyoteWriter(OutputBuffer ob) {
        super(ob);
        this.ob = ob;
    }


    // --------------------------------------------------------- Public Methods


    /**
     * Prevent cloning the facade.
     */
    protected Object clone()
        throws CloneNotSupportedException {
        throw new CloneNotSupportedException();
    }


    // -------------------------------------------------------- Package Methods


    /**
     * Clear facade.
     */
    void clear() {
        ob = null;
    }


    /**
     * Recycle.
     */
    void recycle() {
        error = false;
    }


    // --------------------------------------------------------- Writer Methods


    public void flush() {

        if (error)
            return;

        try {
            ob.flush();
        } catch (IOException e) {
            error = true;
        }

    }


    public void close() {

        // We don't close the PrintWriter - super() is not called,
        // so the stream can be reused. We close ob.
        try {
            ob.close();
        } catch (IOException ex ) {
            ;
        }
        error = false;

    }


    public boolean checkError() {
        flush();
        return error;
    }


    public void write(int c) {

        if (error)
            return;

        try {
            ob.write(c);
        } catch (IOException e) {
            error = true;
        }

    }


    public void write(char buf[], int off, int len) {

        if (error)
            return;

        try {
            ob.write(buf, off, len);
        } catch (IOException e) {
            error = true;
        }

    }


    public void write(char buf[]) {
	write(buf, 0, buf.length);
    }


    public void write(String s, int off, int len) {

        if (error)
            return;

        try {
            ob.write(s, off, len);
        } catch (IOException e) {
            error = true;
        }

    }


    public void write(String s) {
        write(s, 0, s.length());
    }


    // ---------------------------------------------------- PrintWriter Methods


    public void print(boolean b) {
        if (b) {
            write("true");
        } else {
            write("false");
        }
    }


    public void print(char c) {
        write(c);
    }


    public void print(int i) {
        write(String.valueOf(i));
    }


    public void print(long l) {
        write(String.valueOf(l));
    }


    public void print(float f) {
        write(String.valueOf(f));
    }


    public void print(double d) {
        write(String.valueOf(d));
    }


    public void print(char s[]) {
        write(s);
    }


    public void print(String s) {
        if (s == null) {
            s = "null";
        }
        write(s);
    }


    public void print(Object obj) {
        write(String.valueOf(obj));
    }


    public void println() {
        write(LINE_SEP);
    }


    public void println(boolean b) {
        print(b);
        println();
    }


    public void println(char c) {
        print(c);
        println();
    }


    public void println(int i) {
        print(i);
        println();
    }


    public void println(long l) {
        print(l);
        println();
    }


    public void println(float f) {
        print(f);
        println();
    }


    public void println(double d) {
        print(d);
        println();
    }


    public void println(char c[]) {
        print(c);
        println();
    }


    public void println(String s) {
        print(s);
        println();
    }


    public void println(Object o) {
        print(o);
        println();
    }


}