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// ByteArrayOutputStream.java - Write bytes to an array.
/* 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 Tom Tromey <tromey@cygnus.com>
* @date September 24, 1998
*/
/* Written using "Java Class Libraries", 2nd edition, ISBN 0-201-31002-3
* "The Java Language Specification", ISBN 0-201-63451-1
* Status: Complete to version 1.1.
*/
public class ByteArrayOutputStream extends OutputStream
{
public ByteArrayOutputStream ()
{
this (32);
}
public ByteArrayOutputStream (int size)
{
buf = new byte[size];
count = 0;
}
public synchronized void reset ()
{
count = 0;
}
public int size ()
{
return count;
}
public synchronized byte[] toByteArray ()
{
byte[] ret = new byte[count];
System.arraycopy(buf, 0, ret, 0, count);
return ret;
}
public String toString ()
{
return new String (buf, 0, count);
}
public String toString (String enc) throws UnsupportedEncodingException
{
return new String (buf, 0, count, enc);
}
// This is deprecated in the JCL book.
public String toString (int hibyte)
{
return new String (buf, 0, count, hibyte);
}
// Resize buffer to accomodate new bytes.
private void resize (int add)
{
if (count + add >= buf.length)
{
int newlen = buf.length * 2;
if (count + add > newlen)
newlen = count + add;
byte[] newbuf = new byte[newlen];
System.arraycopy(buf, 0, newbuf, 0, count);
buf = newbuf;
}
}
public synchronized void write (int oneByte)
{
resize (1);
buf[count++] = (byte) oneByte;
}
public synchronized void write (byte[] buffer, int offset, int add)
{
// If ADD < 0 then arraycopy will throw the appropriate error for
// us.
if (add >= 0)
resize (add);
System.arraycopy(buffer, offset, buf, count, add);
count += add;
}
public synchronized void writeTo (OutputStream out) throws IOException
{
out.write(buf, 0, count);
}
// The byte buffer.
protected byte[] buf;
// Number of valid bytes in buffer.
protected int count;
}
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