Initial revision

From-SVN: r26263

libjava/java/io/ByteArrayOutputStream.java

@@ -0,0 +1,108 @@
+// 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;
+}