bytearrayoutputstream.java

kaffe是一个java虚拟机的源代码。里面包含了一些java例程和标准的java包。

package java.io;

import kaffe.io.ByteToCharConverter;

/*
 * Java core library component.
 *
 * Copyright (c) 1997, 1998
 *      Transvirtual Technologies, Inc.  All rights reserved.
 *
 * See the file "license.terms" for information on usage and redistribution
 * of this file.
 */
public class ByteArrayOutputStream
  extends OutputStream {

protected byte[] buf;
protected int count;

public ByteArrayOutputStream() {
	this(32);
}

public ByteArrayOutputStream(int size) {
	buf = new byte[size];
	count = 0;
}

private void ensureCapacity ( int size ) {
	if ( size > buf.length ) {
		final byte oldBuf[] = buf;
		buf = new byte[size + 32];
		System.arraycopy( oldBuf, 0, buf, 0, oldBuf.length);
	}
}

public synchronized void reset() {
	count = 0;
}

public int size() {
	return (count);
}

public synchronized byte[] toByteArray() {
	final byte result[] = new byte[count];
	System.arraycopy(buf, 0, result, 0, count);
	return (result);
}

public String toString () {
	return (new String(buf, 0, count));
}

public String toString(String enc) throws UnsupportedEncodingException {
	return (new String(buf, 0, count, enc));
}

/**
 * @deprecated
 */
public String toString(int hibyte) {
	return new String(buf, hibyte, 0, count);
}

public synchronized void write ( byte b[], int off, int len ) {
	ensureCapacity(count + len);
	System.arraycopy(b, off, buf, count, len);
	count += len;
}

public synchronized void write(int b) {
	ensureCapacity(count+1);
	buf[count++]=(byte)b;
}

public synchronized void writeTo(OutputStream out) throws IOException {
	out.write(buf, 0, count);
}

}