1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
|
/* Copyright (C) 2002-2003 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.
*/
#include <rdr/NullOutStream.h>
#include <rdr/Exception.h>
using namespace rdr;
static const int bufferSize = 1024;
NullOutStream::NullOutStream()
: offset(0)
{
start = ptr = new U8[bufferSize];
end = start + bufferSize;
}
NullOutStream::~NullOutStream()
{
delete [] start;
}
int NullOutStream::length()
{
return offset + ptr - start;
}
void NullOutStream::writeBytes(const void* data, int length)
{
offset += length;
}
int NullOutStream::overrun(int itemSize, int nItems)
{
if (itemSize > bufferSize)
throw Exception("NullOutStream overrun: max itemSize exceeded");
offset += ptr - start;
ptr = start;
if (itemSize * nItems > end - ptr)
nItems = (end - ptr) / itemSize;
return nItems;
}
|
