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authorMike Gabriel <mike.gabriel@das-netzwerkteam.de>2017-06-30 20:13:51 +0200
committerMike Gabriel <mike.gabriel@das-netzwerkteam.de>2017-07-26 10:12:43 +0200
commitf76c82403888bb498973ec974dbfd20e4edb02fe (patch)
treebe0cb6c112d9d9fb46387fbd114727510197ddec /nxcomp/src/WriteBuffer.h
parent9193d11eeeea933e293acd5e0f03fa4e9887186b (diff)
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nxcomp: Switch to autoreconf.
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+/**************************************************************************/
+/* */
+/* Copyright (c) 2001, 2011 NoMachine (http://www.nomachine.com) */
+/* Copyright (c) 2008-2014 Oleksandr Shneyder <o.shneyder@phoca-gmbh.de> */
+/* Copyright (c) 2014-2016 Ulrich Sibiller <uli42@gmx.de> */
+/* Copyright (c) 2014-2016 Mihai Moldovan <ionic@ionic.de> */
+/* Copyright (c) 2011-2016 Mike Gabriel <mike.gabriel@das-netzwerkteam.de>*/
+/* Copyright (c) 2015-2016 Qindel Group (http://www.qindel.com) */
+/* */
+/* NXCOMP, NX protocol compression and NX extensions to this software */
+/* are copyright of the aforementioned persons and companies. */
+/* */
+/* Redistribution and use of the present software is allowed according */
+/* to terms specified in the file LICENSE.nxcomp which comes in the */
+/* source distribution. */
+/* */
+/* All rights reserved. */
+/* */
+/* NOTE: This software has received contributions from various other */
+/* contributors, only the core maintainers and supporters are listed as */
+/* copyright holders. Please contact us, if you feel you should be listed */
+/* as copyright holder, as well. */
+/* */
+/**************************************************************************/
+
+#ifndef WriteBuffer_H
+#define WriteBuffer_H
+
+#include "Misc.h"
+
+#define PANIC
+#define WARNING
+#undef TEST
+#undef DEBUG
+
+#define WRITE_BUFFER_DEFAULT_SIZE 16384
+
+//
+// Adjust for the biggest reply that we could receive.
+// This is likely to be a reply to a X_ListFonts where
+// user has a large amount of installed fonts.
+//
+
+#define WRITE_BUFFER_OVERFLOW_SIZE 4194304
+
+class WriteBuffer
+{
+ public:
+
+ WriteBuffer();
+
+ ~WriteBuffer();
+
+ void setSize(unsigned int initialSize, unsigned int thresholdSize,
+ unsigned int maximumSize);
+
+ unsigned char *addMessage(unsigned int numBytes);
+
+ unsigned char *removeMessage(unsigned int numBytes);
+
+ unsigned char *addScratchMessage(unsigned int numBytes);
+
+ //
+ // This form allows user to provide its own
+ // buffer as write buffer's scratch area.
+ //
+
+ unsigned char *addScratchMessage(unsigned char *newBuffer, unsigned int numBytes);
+
+ void removeScratchMessage();
+
+ void partialReset();
+
+ void fullReset();
+
+ unsigned char *getData() const
+ {
+ return buffer_;
+ }
+
+ unsigned int getLength() const
+ {
+ return length_;
+ }
+
+ unsigned int getAvailable() const
+ {
+ return (size_ - length_);
+ }
+
+ unsigned char *getScratchData() const
+ {
+ return scratchBuffer_;
+ }
+
+ unsigned int getScratchLength() const
+ {
+ return scratchLength_;
+ }
+
+ unsigned int getTotalLength() const
+ {
+ return (length_ + scratchLength_);
+ }
+
+ void registerPointer(unsigned char **pointer)
+ {
+ index_ = pointer;
+ }
+
+ void unregisterPointer()
+ {
+ index_ = 0;
+ }
+
+ private:
+
+ unsigned int size_;
+ unsigned int length_;
+
+ unsigned char *buffer_;
+ unsigned char **index_;
+
+ unsigned int scratchLength_;
+ unsigned char *scratchBuffer_;
+
+ int scratchOwner_;
+
+ unsigned int initialSize_;
+ unsigned int thresholdSize_;
+ unsigned int maximumSize_;
+};
+
+#endif /* WriteBuffer_H */