blob: b9a88de66ac1571fe7ec5fb1548264a8eb61658d (
plain) (
blame)
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
61
62
63
64
|
// Copyright Epic Games, Inc. All Rights Reserved.
#include <stdarg.h>
#include <zencore/memory.h>
#include <zencore/stream.h>
#include <zencore/testing.h>
#include <algorithm>
#include <stdexcept>
namespace zen {
MemoryInStream::MemoryInStream(const void* buffer, size_t size)
: m_Buffer(reinterpret_cast<const uint8_t*>(buffer), reinterpret_cast<const uint8_t*>(buffer) + size)
{
}
void
MemoryInStream::Read(void* buffer, size_t byteCount, uint64_t offset)
{
RwLock::ExclusiveLockScope _(m_Lock);
const size_t needEnd = offset + byteCount;
if (needEnd > m_Buffer.size())
throw std::runtime_error("read past end of file!"); // TODO: better exception
memcpy(buffer, m_Buffer.data() + offset, byteCount);
}
void
MemoryOutStream::Write(const void* data, size_t byteCount, uint64_t offset)
{
RwLock::ExclusiveLockScope _(m_Lock);
const size_t needEnd = offset + byteCount;
if (needEnd > m_Buffer.size())
m_Buffer.resize(needEnd);
memcpy(m_Buffer.data() + offset, data, byteCount);
}
void
MemoryOutStream::Flush()
{
// No-op
}
//////////////////////////////////////////////////////////////////////////
//
// Testing related code follows...
//
#if ZEN_WITH_TESTS
void
stream_forcelink()
{
}
#endif
} // namespace zen
|