Created ByteArrayOutInputStream for writing data to a byte array output

stream and then reading it back via an InputStream without having to copy the data to a separate buffer. git-svn-id: https://samskivert.googlecode.com/svn/trunk@551 6335cc39-0255-0410-8fd6-9bcaacd3b74c
2002-02-01 18:19:43 +00:00
parent 2fb0906dda
commit 99e611fc22
1 changed files with 65 additions and 0 deletions
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+//
+// $Id: ByteArrayOutInputStream.java,v 1.1 2002/02/01 18:19:43 mdb Exp $
+//
+// samskivert library - useful routines for java programs
+// Copyright (C) 2001 Michael Bayne
+// 
+// This library is free software; you can redistribute it and/or modify it
+// under the terms of the GNU Lesser General Public License as published
+// by the Free Software Foundation; either version 2.1 of the License, or
+// (at your option) any later version.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+// Lesser General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public
+// License along with this library; if not, write to the Free Software
+// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+
+package com.samskivert.io;
+
+import java.io.ByteArrayInputStream;
+import java.io.ByteArrayOutputStream;
+import java.io.InputStream;
+
+/**
+ * The byte array out/input stream is used for writing data to a byte
+ * array output stream and then obtaining an input stream that can read
+ * back the data written to the output stream without first having to copy
+ * it to a separate buffer.
+ */
+public class ByteArrayOutInputStream extends ByteArrayOutputStream
+{
+    /**
+     * Creates a new byte array out/input stream. The buffer capacity is
+     * initially 32 bytes, though its size increases if necessary.
+     */
+    public ByteArrayOutInputStream ()
+    {
+	this(32);
+    }
+
+    /**
+     * Creates a new byte array out/input stream, with a buffer capacity
+     * of the specified size, in bytes.
+     *
+     * @param size the initial size.
+     *
+     * @exception IllegalArgumentException if size is negative.
+     */
+    public ByteArrayOutInputStream (int size)
+    {
+        super(size);
+    }
+
+    /**
+     * Returns an input stream configured to read only the bytes that have
+     * been written this far to this byte array out/input stream.
+     */
+    public InputStream getInputStream ()
+    {
+        return new ByteArrayInputStream(buf, 0, count);
+    }
+}