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StreamBuffer.h
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1//===-- StreamBuffer.h ------------------------------------------*- C++ -*-===//
2//
3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4// See https://llvm.org/LICENSE.txt for license information.
5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6//
7//===----------------------------------------------------------------------===//
8
9#ifndef LLDB_CORE_STREAMBUFFER_H
10#define LLDB_CORE_STREAMBUFFER_H
11
12#include "lldb/Utility/Stream.h"
13#include "llvm/ADT/SmallVector.h"
14#include <cstdio>
15#include <string>
16
17namespace lldb_private {
18
19template <unsigned N> class StreamBuffer : public Stream {
20public:
21 StreamBuffer() : Stream(0, 4, lldb::eByteOrderBig), m_packet() {}
22
23 StreamBuffer(uint32_t flags, uint32_t addr_size, lldb::ByteOrder byte_order)
24 : Stream(flags, addr_size, byte_order), m_packet() {}
25
26 ~StreamBuffer() override = default;
27
28 void Flush() override {
29 // Nothing to do when flushing a buffer based stream...
30 }
31
32 void Clear() { m_packet.clear(); }
33
34 // Beware, this might not be NULL terminated as you can expect from
35 // StringString as there may be random bits in the llvm::SmallVector. If you
36 // are using this class to create a C string, be sure the call PutChar ('\0')
37 // after you have created your string, or use StreamString.
38 const char *GetData() const { return m_packet.data(); }
39
40 size_t GetSize() const { return m_packet.size(); }
41
42protected:
43 llvm::SmallVector<char, N> m_packet;
44
45 size_t WriteImpl(const void *s, size_t length) override {
46 if (s && length)
47 m_packet.append((const char *)s, ((const char *)s) + length);
48 return length;
49 }
50};
51
52} // namespace lldb_private
53
54#endif // LLDB_CORE_STREAMBUFFER_H
void Flush() override
Flush the stream.
Definition: StreamBuffer.h:28
llvm::SmallVector< char, N > m_packet
Definition: StreamBuffer.h:43
~StreamBuffer() override=default
size_t WriteImpl(const void *s, size_t length) override
Output character bytes to the stream.
Definition: StreamBuffer.h:45
StreamBuffer(uint32_t flags, uint32_t addr_size, lldb::ByteOrder byte_order)
Definition: StreamBuffer.h:23
const char * GetData() const
Definition: StreamBuffer.h:38
A stream class that can stream formatted output to a file.
Definition: Stream.h:28
A class that represents a running process on the host machine.
Definition: SBAddress.h:15
ByteOrder
Byte ordering definitions.