1 files changed, 53 insertions, 0 deletions
diff --git a/java/com/tigervnc/rdr/MemOutStream.java b/java/com/tigervnc/rdr/MemOutStream.java
new file mode 100644
index 00000000..b3040793
--- /dev/null
+++ b/java/com/tigervnc/rdr/MemOutStream.java
@@ -0,0 +1,53 @@
+/* Copyright (C) 2002-2005 RealVNC Ltd.  All Rights Reserved.
+ * 
+ * This is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ * 
+ * This software 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 General Public License for more details.
+ * 
+ * You should have received a copy of the GNU General Public License
+ * along with this software; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307,
+ * USA.
+ */
+
+//
+// A MemOutStream grows as needed when data is written to it.
+//
+
+package com.tigervnc.rdr;
+
+public class MemOutStream extends OutStream {
+
+  public MemOutStream(int len) {
+    b = new byte[len];
+    ptr = 0;
+    end = len;
+  }
+  public MemOutStream() { this(1024); }
+
+  public int length() { return ptr; }
+  public void clear() { ptr = 0; };
+  public void reposition(int pos) { ptr = pos; }
+
+  // overrun() either doubles the buffer or adds enough space for nItems of
+  // size itemSize bytes.
+
+  protected int overrun(int itemSize, int nItems) {
+    int len = ptr + itemSize * nItems;
+    if (len < end * 2)
+      len = end * 2;
+
+    byte[] newBuf = new byte[len];
+    System.arraycopy(b, 0, newBuf, 0, ptr);
+    b = newBuf;
+    end = len;
+
+    return nItems;
+  }
+}