libjava/java/io/PrintWriter.java

/* Copyright (C) 1998, 1999  Cygnus Solutions

   This file is part of libgcj.

This software is copyrighted work licensed under the terms of the
Libgcj License.  Please consult the file "LIBGCJ_LICENSE" for
details.  */
 
package java.io;

/**
 * @author Per Bothner <bothner@cygnus.com>
 * @date April 17, 1998.  
 */
/* Written using "Java Class Libraries", 2nd edition, plus online
 * API docs for JDK 1.2 beta from http://www.javasoft.com.
 * Status:  Believed complete and correct.
 * However, should use native methods for conversion.
 */

public class PrintWriter extends Writer
{
  private boolean autoflush;
  private boolean error;
  Writer out;

  public PrintWriter(Writer wr)
  {
    super(wr);
    this.out = wr;
  }

  public PrintWriter(Writer wr, boolean autoflush)
  {
    super(wr);
    this.out = wr;
    this.autoflush = autoflush;
  }

  public PrintWriter(OutputStream out)
  {
    super();
    this.out = new OutputStreamWriter(out);
    this.lock = this.out;
  }

  public PrintWriter(OutputStream out, boolean autoflush)
  {
    this(out);
    this.autoflush = autoflush;
  }
  protected void setError() { error = true; }

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

  public void flush()
  {
    try
      {
	out.flush();
      }
    catch (IOException ex)
      {
	error = true;
      }
  }

  public void close()
  {
    try
      {
	out.close();
      }
    catch (IOException ex)
      {
	error = true;
      }
  }

  public void print(String str)
  {
    try
      {
	out.write(str == null ? "null" : str);
      }
    catch (IOException ex)
      {
	error = true;
      }
  }

  public void print(char ch)
  {
    write((int) ch);
  }

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

  public void print(boolean bool)
  {
    print(bool ? "true" : "false");
  }

  public void print(int inum)
  {
    print(Integer.toString(inum));
  }

  public void print(long lnum)
  {
    print(Long.toString(lnum));
  }

  public void print(float fnum)
  {
    print(Float.toString(fnum));
  }

  public void print(double dnum)
  {
    print(Double.toString(dnum));
  }

  public void print(Object obj)
  {
    print(obj == null ? "null" : obj.toString());
  }

  private static final char[] line_separator
  = System.getProperty("line.separator").toCharArray();

  public void println()
  {
    synchronized (lock)
      {
	printlnUnsynchronized();
      }
  }

  private void printlnUnsynchronized()
  {
    try
      {
	write(line_separator, 0, line_separator.length);
	if (autoflush)
	  out.flush();
      }
    catch (IOException ex)
      {
	error = true;
      }
  }

  public void println(boolean bool)
  {
    synchronized (lock)
      {
	print(bool);
	printlnUnsynchronized();
      }
  }
  public void println(int inum)
  {
    synchronized (lock)
      {
	print(inum);
	printlnUnsynchronized();
      }
  }

  public void println(long lnum)
  {
    synchronized (lock)
      {
	print(lnum);
	printlnUnsynchronized();
      }
  }

  public void println(float fnum)
  {
    synchronized (lock)
      {
	print(fnum);
	printlnUnsynchronized();
      }
  }

  public void println(double dnum)
  {
    synchronized (lock)
      {
	print(dnum);
	printlnUnsynchronized();
      }
  }

  public void println(Object obj)
  {
    synchronized (lock)
      {
	print(obj);
	printlnUnsynchronized();
      }
  }

  public void println(String str)
  {
    synchronized (lock)
      {
	print(str);
	printlnUnsynchronized();
      }
  }

  public void println(char ch)
  {
    synchronized (lock)
      {
	print(ch);
	printlnUnsynchronized();
      }
  }

  public void println(char[] charArray)
  {
    synchronized (lock)
      {
	print(charArray);
	printlnUnsynchronized();
      }
  }

  public void write(int ch)
  {
    try
      {
	out.write(ch);
      }
    catch (IOException ex)
      {
	error = true;
      }
  }

  public void write(char[] charArray, int offset, int count)
  {
    try
      {
	out.write(charArray, offset, count);
      }
    catch (IOException ex)
      {
	error = true;
      }
  }

  public void write(String str, int offset, int count)
  {
    try
      {
	out.write(str, offset, count);
      }
    catch (IOException ex)
      {
	error = true;
      }
  }

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

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