KasmVNC/common/rdr/MemInStream.h
Pierre Ossman 57a3c3bba8 Simplify stream availability handling
Just have a simply number of bytes argument to avoid a lot of
complexity.
2021-03-29 10:48:26 +03:00

64 lines
1.8 KiB
C++

/* 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.
*/
//
// rdr::MemInStream is an InStream which streams from a given memory buffer.
// If the deleteWhenDone parameter is true then the buffer will be delete[]d in
// the destructor. Note that it is delete[]d as a U8* - strictly speaking this
// means it ought to be new[]ed as a U8* as well, but on most platforms this
// doesn't matter.
//
#ifndef __RDR_MEMINSTREAM_H__
#define __RDR_MEMINSTREAM_H__
#include <rdr/InStream.h>
#include <rdr/Exception.h>
namespace rdr {
class MemInStream : public InStream {
public:
MemInStream(const void* data, size_t len, bool deleteWhenDone_=false)
: start((const U8*)data), deleteWhenDone(deleteWhenDone_)
{
ptr = start;
end = start + len;
}
virtual ~MemInStream() {
if (deleteWhenDone)
delete [] start;
}
size_t pos() { return ptr - start; }
void reposition(size_t pos) { ptr = start + pos; }
private:
bool overrun(size_t needed, bool wait) { throw EndOfStream(); }
const U8* start;
bool deleteWhenDone;
};
}
#endif