Merge branch 'nxcomp'

1 files changed, 59 insertions, 0 deletions

diff --git a/nxcomp/BlockCache.h b/nxcomp/BlockCache.h
new file mode 100644
index 000000000..b9146ceea
--- /dev/null
+++ b/nxcomp/BlockCache.h
@@ -0,0 +1,59 @@
+/**************************************************************************/
+/*                                                                        */
+/* Copyright (c) 2001, 2010 NoMachine, http://www.nomachine.com/.         */
+/*                                                                        */
+/* NXCOMP, NX protocol compression and NX extensions to this software     */
+/* are copyright of NoMachine. Redistribution and use of the present      */
+/* software is allowed according to terms specified in the file LICENSE   */
+/* which comes in the source distribution.                                */
+/*                                                                        */
+/* Check http://www.nomachine.com/licensing.html for applicability.       */
+/*                                                                        */
+/* NX and NoMachine are trademarks of Medialogic S.p.A.                   */
+/*                                                                        */
+/* All rights reserved.                                                   */
+/*                                                                        */
+/**************************************************************************/
+
+#ifndef BlockCache_H
+#define BlockCache_H
+
+
+// Cache to hold an arbitrary-length block of bytes
+
+class BlockCache
+{
+  public:
+  BlockCache():buffer_(0), size_(0), checksum_(0)
+  {
+  }
+   ~BlockCache()
+  {
+    delete[]buffer_;
+  }
+  int compare(unsigned int size, const unsigned char *data,
+	      int overwrite = 1);
+  void set(unsigned int size, const unsigned char *data);
+
+  unsigned int getLength() const
+  {
+    return size_;
+  }
+  unsigned int getChecksum() const
+  {
+    return checksum_;
+  }
+  const unsigned char *getData() const
+  {
+    return buffer_;
+  }
+
+  static unsigned int checksum(unsigned int size, const unsigned char *data);
+
+private:
+  unsigned char *buffer_;
+  unsigned int size_;
+  unsigned int checksum_;
+};
+
+#endif /* BlockCache_H */