109 lines
2.2 KiB
Java
109 lines
2.2 KiB
Java
// ByteArrayOutputStream.java - Write bytes to an array.
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/* Copyright (C) 1998, 1999 Cygnus Solutions
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This file is part of libgcj.
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This software is copyrighted work licensed under the terms of the
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Libgcj License. Please consult the file "LIBGCJ_LICENSE" for
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details. */
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package java.io;
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/**
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* @author Tom Tromey <tromey@cygnus.com>
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* @date September 24, 1998
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*/
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/* Written using "Java Class Libraries", 2nd edition, ISBN 0-201-31002-3
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* "The Java Language Specification", ISBN 0-201-63451-1
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* Status: Complete to version 1.1.
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*/
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public class ByteArrayOutputStream extends OutputStream
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{
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public ByteArrayOutputStream ()
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{
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this (32);
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}
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public ByteArrayOutputStream (int size)
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{
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buf = new byte[size];
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count = 0;
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}
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public synchronized void reset ()
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{
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count = 0;
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}
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public int size ()
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{
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return count;
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}
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public synchronized byte[] toByteArray ()
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{
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byte[] ret = new byte[count];
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System.arraycopy(buf, 0, ret, 0, count);
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return ret;
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}
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public String toString ()
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{
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return new String (buf, 0, count);
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}
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public String toString (String enc) throws UnsupportedEncodingException
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{
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return new String (buf, 0, count, enc);
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}
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// This is deprecated in the JCL book.
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public String toString (int hibyte)
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{
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return new String (buf, 0, count, hibyte);
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}
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// Resize buffer to accomodate new bytes.
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private void resize (int add)
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{
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if (count + add >= buf.length)
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{
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int newlen = buf.length * 2;
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if (count + add > newlen)
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newlen = count + add;
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byte[] newbuf = new byte[newlen];
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System.arraycopy(buf, 0, newbuf, 0, count);
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buf = newbuf;
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}
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}
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public synchronized void write (int oneByte)
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{
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resize (1);
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buf[count++] = (byte) oneByte;
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}
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public synchronized void write (byte[] buffer, int offset, int add)
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{
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// If ADD < 0 then arraycopy will throw the appropriate error for
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// us.
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if (add >= 0)
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resize (add);
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System.arraycopy(buffer, offset, buf, count, add);
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count += add;
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}
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public synchronized void writeTo (OutputStream out) throws IOException
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{
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out.write(buf, 0, count);
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}
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// The byte buffer.
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protected byte[] buf;
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// Number of valid bytes in buffer.
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protected int count;
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}
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