Imported nxcomp-3.1.0-4.tar.gznxcomp/3.1.0-4

Summary: Imported nxcomp-3.1.0-4.tar.gz
Keywords:

Imported nxcomp-3.1.0-4.tar.gz
into Git repository

1 files changed, 298 insertions, 0 deletions

diff --git a/nxcomp/PolyText8.cpp b/nxcomp/PolyText8.cpp
new file mode 100755
index 000000000..e2cc1cebb
--- /dev/null
+++ b/nxcomp/PolyText8.cpp
@@ -0,0 +1,298 @@
+/**************************************************************************/
+/*                                                                        */
+/* Copyright (c) 2001, 2007 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 NoMachine S.r.l.                    */
+/*                                                                        */
+/* All rights reserved.                                                   */
+/*                                                                        */
+/**************************************************************************/
+
+#include "PolyText8.h"
+
+#include "ClientCache.h"
+
+#include "EncodeBuffer.h"
+#include "DecodeBuffer.h"
+
+//
+// Set the verbosity level.
+//
+
+#define PANIC
+#define WARNING
+#undef  TEST
+#undef  DEBUG
+#undef  DUMP
+
+//
+// Here are the methods to handle messages' content.
+//
+
+int PolyText8Store::parseIdentity(Message *message, const unsigned char *buffer,
+                                      unsigned int size, int bigEndian) const
+{
+  PolyText8Message *polyText8 = (PolyText8Message *) message;
+
+  //
+  // Here is the fingerprint.
+  //
+
+  polyText8 -> drawable = GetULONG(buffer + 4, bigEndian); 
+  polyText8 -> gcontext = GetULONG(buffer + 8, bigEndian);
+
+  polyText8 -> x = GetUINT(buffer + 12, bigEndian);
+  polyText8 -> y = GetUINT(buffer + 14, bigEndian);
+
+  //
+  // Clean up padding bytes.
+  //
+
+  #ifdef DUMP
+
+  DumpData(buffer, size);
+
+  *logofs << "\n\n" << logofs_flush;
+
+  #endif
+
+  if ((int) size > dataOffset)
+  { 
+    int length;
+    int current;
+    int delta;
+    int item;
+
+    unsigned int nitem;
+
+    unsigned char *pad = NULL;
+    unsigned char *end = NULL;
+
+    delta = 1;
+    nitem = 0;
+
+    #ifdef DUMP 
+    *logofs << name() << " Size " << size << ".\n" << logofs_flush;
+    #endif
+
+    //
+    // Data is a list of TextItem where element
+    // can be a string or a font shift.
+    //
+
+    current = POLYTEXT8_DATA_OFFSET;
+    length  = POLYTEXT8_DATA_OFFSET;
+
+    do
+    {
+      #ifdef DUMP
+      *logofs << name() << " Current " << current << ".\n" << logofs_flush;
+      #endif
+
+      item = GetUINT(buffer + length , bigEndian);
+      
+      if (item < 255)
+      {
+        //
+        // Text element. Number represents
+        // the 'Length of string' field.
+        //
+        
+        length += (item + delta + 1);
+
+	nitem++;
+      }	
+      else if (item == 255)
+      {
+        //
+        // Element is a font shift.
+        //
+        
+        length += 5;
+
+        nitem++;
+      }
+
+      #ifdef DUMP 
+      *logofs << name() << " Item " << item << ".\n" << logofs_flush;
+      #endif
+
+      current += length;
+    }
+    while(current < (int) size && item != 0);
+     
+     
+    #ifdef DUMP
+    *logofs << name() << " Final length " << length << ".\n" << logofs_flush;
+    #endif
+
+    end = ((unsigned char *) buffer) + size;
+
+    pad = ((unsigned char *) buffer) + length;
+
+    for (; pad < end && nitem >= 1; pad++)
+    {
+      #ifdef DUMP
+      *logofs << name() << " Padding " << " .\n" << logofs_flush;
+      #endif
+
+      *pad = 0;
+    }
+  }
+
+  #ifdef DEBUG
+  *logofs << name() << ": Parsed Identity for message at " << this << ".\n" << logofs_flush;
+  #endif
+
+  return 1;
+}
+
+int PolyText8Store::unparseIdentity(const Message *message, unsigned char *buffer,
+                                        unsigned int size, int bigEndian) const
+{
+  PolyText8Message *polyText8 = (PolyText8Message *) message;
+
+  //
+  // Fill all the message's fields.
+  //
+
+  PutULONG(polyText8 -> drawable, buffer + 4, bigEndian);
+  PutULONG(polyText8 -> gcontext, buffer + 8, bigEndian);
+
+  PutUINT(polyText8 -> x, buffer + 12, bigEndian);
+  PutUINT(polyText8 -> y, buffer + 14, bigEndian);
+
+  #ifdef DEBUG
+  *logofs << name() << ": Unparsed identity for message at " << this << ".\n" << logofs_flush;
+  #endif
+
+  return 1;
+}
+
+void PolyText8Store::dumpIdentity(const Message *message) const
+{
+  #ifdef DUMP
+
+  PolyText8Message *polyText8 = (PolyText8Message *) message;
+
+  *logofs << name() << ": Identity drawable " << polyText8 -> drawable 
+          << ", gcontext " << polyText8 -> gcontext << ", x " << polyText8 -> x 
+          << ", y " << polyText8 -> y << ", size " << polyText8 -> size_ 
+          << ".\n";
+
+  #endif
+}
+
+void PolyText8Store::identityChecksum(const Message *message, const unsigned char *buffer,
+                                          unsigned int size, int bigEndian) const
+{
+}
+
+void PolyText8Store::updateIdentity(EncodeBuffer &encodeBuffer, const Message *message,
+                                        const Message *cachedMessage,
+                                            ChannelCache *channelCache) const
+{
+  PolyText8Message *polyText8       = (PolyText8Message *) message;
+  PolyText8Message *cachedPolyText8 = (PolyText8Message *) cachedMessage;
+
+  ClientCache *clientCache = (ClientCache *) channelCache;
+
+  #ifdef TEST
+  *logofs << name() << ": Encoding value " << polyText8 -> drawable
+          << " as " << "drawable" << " field.\n" << logofs_flush;
+  #endif
+
+  encodeBuffer.encodeXidValue(polyText8 -> drawable, clientCache -> drawableCache);
+
+  cachedPolyText8 -> drawable = polyText8 -> drawable;
+
+  #ifdef TEST
+  *logofs << name() << ": Encoding value " << polyText8 -> gcontext
+          << " as " << "gcontext" << " field.\n" << logofs_flush;
+  #endif
+
+  encodeBuffer.encodeXidValue(polyText8 -> gcontext, clientCache -> gcCache);
+
+  cachedPolyText8 -> gcontext = polyText8 -> gcontext;
+
+  #ifdef TEST
+  *logofs << name() << ": Encoding value " << polyText8 -> x
+          << " as " << "x" << " field.\n" << logofs_flush;
+  #endif
+
+  unsigned short int diff_x = polyText8 -> x - cachedPolyText8 -> x;
+
+  encodeBuffer.encodeCachedValue(diff_x, 16,
+                     clientCache -> polyTextCacheX);
+
+  cachedPolyText8 -> x = polyText8 -> x;
+
+  #ifdef TEST
+  *logofs << name() << ": Encoding value " << polyText8 -> y
+          << " as " << "y" << " field.\n" << logofs_flush;
+  #endif
+
+  unsigned short int diff_y = polyText8 -> y - cachedPolyText8 -> y;
+
+  encodeBuffer.encodeCachedValue(diff_y, 16,
+                     clientCache -> polyTextCacheY);
+
+  cachedPolyText8 -> y = polyText8 -> y;
+}
+
+void PolyText8Store::updateIdentity(DecodeBuffer &decodeBuffer, const Message *message,
+                                        ChannelCache *channelCache) const
+{
+  PolyText8Message *polyText8 = (PolyText8Message *) message;
+
+  ClientCache *clientCache = (ClientCache *) channelCache;
+
+  unsigned int value;
+
+  decodeBuffer.decodeXidValue(value, clientCache -> drawableCache);
+
+  polyText8 -> drawable = value;
+
+  #ifdef DEBUG
+  *logofs << name() << ": Decoded value " << polyText8 -> drawable
+          << " as " << "drawable" << " field.\n" << logofs_flush;
+  #endif
+
+  decodeBuffer.decodeXidValue(value, clientCache -> gcCache);
+
+  polyText8 -> gcontext = value;
+
+  #ifdef DEBUG
+  *logofs << name() << ": Decoded value " << polyText8 -> gcontext
+          << " as gcontext field.\n" << logofs_flush;
+  #endif
+
+  decodeBuffer.decodeCachedValue(value, 16,
+               clientCache -> polyTextCacheX);
+
+  polyText8 -> x += value;
+  polyText8 -> x &= 0xffff;
+
+  #ifdef DEBUG
+  *logofs << name() << ": Decoded value " << polyText8 -> x
+          << " as x field.\n" << logofs_flush;
+  #endif
+
+  decodeBuffer.decodeCachedValue(value, 16,
+               clientCache -> polyTextCacheY);
+
+  polyText8 -> y += value;
+  polyText8 -> y &= 0xffff;
+
+  #ifdef DEBUG
+  *logofs << name() << ": Decoded value " << polyText8 -> y
+          << " as y field.\n" << logofs_flush;
+  #endif
+}