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-rw-r--r--rdr/InStream.h143
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diff --git a/rdr/InStream.h b/rdr/InStream.h
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@@ -1,143 +0,0 @@
-//
-// Copyright (C) 2002 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.
-
-//
-// rdr::InStream marshalls data from a buffer stored in RDR (RFB Data
-// Representation).
-//
-
-#ifndef __RDR_INSTREAM_H__
-#define __RDR_INSTREAM_H__
-
-#include <rdr/types.h>
-#include <string.h> // for memcpy
-
-namespace rdr {
-
- class InStream {
-
- public:
-
- virtual ~InStream() {}
-
- // check() ensures there is buffer data for at least one item of size
- // itemSize bytes. Returns the number of items in the buffer (up to a
- // maximum of nItems).
-
- inline int check(int itemSize, int nItems=1)
- {
- if (ptr + itemSize * nItems > end) {
- if (ptr + itemSize > end)
- return overrun(itemSize, nItems);
-
- nItems = (end - ptr) / itemSize;
- }
- return nItems;
- }
-
- // readU/SN() methods read unsigned and signed N-bit integers.
-
- inline U8 readU8() { check(1); return *ptr++; }
- inline U16 readU16() { check(2); int b0 = *ptr++; int b1 = *ptr++;
- return b0 << 8 | b1; }
- inline U32 readU32() { check(4); int b0 = *ptr++; int b1 = *ptr++;
- int b2 = *ptr++; int b3 = *ptr++;
- return b0 << 24 | b1 << 16 | b2 << 8 | b3; }
-
- inline S8 readS8() { return (S8) readU8(); }
- inline S16 readS16() { return (S16)readU16(); }
- inline S32 readS32() { return (S32)readU32(); }
-
- // readString() reads a string - a U32 length followed by the data.
- // Returns a null-terminated string - the caller should delete[] it
- // afterwards.
-
- char* readString();
-
- // maxStringLength protects against allocating a huge buffer. Set it
- // higher if you need longer strings.
-
- static U32 maxStringLength;
-
- inline void skip(int bytes) {
- while (bytes > 0) {
- int n = check(1, bytes);
- ptr += n;
- bytes -= n;
- }
- }
-
- // readBytes() reads an exact number of bytes.
-
- virtual void readBytes(void* data, int length) {
- U8* dataPtr = (U8*)data;
- U8* dataEnd = dataPtr + length;
- while (dataPtr < dataEnd) {
- int n = check(1, dataEnd - dataPtr);
- memcpy(dataPtr, ptr, n);
- ptr += n;
- dataPtr += n;
- }
- }
-
- // readOpaqueN() reads a quantity without byte-swapping.
-
- inline U8 readOpaque8() { return readU8(); }
- inline U16 readOpaque16() { check(2); U16 r; ((U8*)&r)[0] = *ptr++;
- ((U8*)&r)[1] = *ptr++; return r; }
- inline U32 readOpaque32() { check(4); U32 r; ((U8*)&r)[0] = *ptr++;
- ((U8*)&r)[1] = *ptr++; ((U8*)&r)[2] = *ptr++;
- ((U8*)&r)[3] = *ptr++; return r; }
- inline U32 readOpaque24A() { check(3); U32 r=0; ((U8*)&r)[0] = *ptr++;
- ((U8*)&r)[1] = *ptr++; ((U8*)&r)[2] = *ptr++;
- return r; }
- inline U32 readOpaque24B() { check(3); U32 r=0; ((U8*)&r)[1] = *ptr++;
- ((U8*)&r)[2] = *ptr++; ((U8*)&r)[3] = *ptr++;
- return r; }
-
- // pos() returns the position in the stream.
-
- virtual int pos() = 0;
-
- // getptr(), getend() and setptr() are "dirty" methods which allow you to
- // manipulate the buffer directly. This is useful for a stream which is a
- // wrapper around an underlying stream.
-
- inline const U8* getptr() const { return ptr; }
- inline const U8* getend() const { return end; }
- inline void setptr(const U8* p) { ptr = p; }
-
- private:
-
- // overrun() is implemented by a derived class to cope with buffer overrun.
- // It ensures there are at least itemSize bytes of buffer data. Returns
- // the number of items in the buffer (up to a maximum of nItems). itemSize
- // is supposed to be "small" (a few bytes).
-
- virtual int overrun(int itemSize, int nItems) = 0;
-
- protected:
-
- InStream() {}
- const U8* ptr;
- const U8* end;
- };
-
-}
-
-#endif