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https://github.com/wpilibsuite/allwpilib
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8f1f64ffb6
Also update copyright to include "and other WPILib contributors" and clarify license referral language to not be restricted to FIRST teams.
68 lines
1.9 KiB
C++
68 lines
1.9 KiB
C++
// Copyright (c) FIRST and other WPILib contributors.
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// Open Source Software; you can modify and/or share it under the terms of
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// the WPILib BSD license file in the root directory of this project.
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#ifndef WPIUTIL_WPI_RAW_UV_OSTREAM_H_
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#define WPIUTIL_WPI_RAW_UV_OSTREAM_H_
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#include "wpi/ArrayRef.h"
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#include "wpi/SmallVector.h"
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#include "wpi/raw_ostream.h"
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#include "wpi/uv/Buffer.h"
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namespace wpi {
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/**
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* raw_ostream style output to a SmallVector of uv::Buffer buffers. Fixed-size
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* buffers are allocated and appended as necessary to fit the data being output.
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* The SmallVector need not be empty at start.
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*/
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class raw_uv_ostream : public raw_ostream {
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public:
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/**
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* Construct a new raw_uv_ostream.
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* @param bufs Buffers vector. NOT cleared on construction.
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* @param allocSize Size to allocate for each buffer; allocation will be
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* performed using Buffer::Allocate().
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*/
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raw_uv_ostream(SmallVectorImpl<uv::Buffer>& bufs, size_t allocSize)
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: m_bufs(bufs),
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m_alloc([=]() { return uv::Buffer::Allocate(allocSize); }) {
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SetUnbuffered();
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}
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/**
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* Construct a new raw_uv_ostream.
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* @param bufs Buffers vector. NOT cleared on construction.
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* @param alloc Allocator.
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*/
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raw_uv_ostream(SmallVectorImpl<uv::Buffer>& bufs,
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std::function<uv::Buffer()> alloc)
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: m_bufs(bufs), m_alloc(alloc) {
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SetUnbuffered();
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}
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~raw_uv_ostream() override = default;
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/**
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* Returns an ArrayRef to the buffers.
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*/
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ArrayRef<uv::Buffer> bufs() { return m_bufs; }
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void flush() = delete;
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private:
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void write_impl(const char* data, size_t len) override;
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uint64_t current_pos() const override;
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SmallVectorImpl<uv::Buffer>& m_bufs;
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std::function<uv::Buffer()> m_alloc;
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// How much allocated space is left in the current buffer.
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size_t m_left = 0;
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};
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} // namespace wpi
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#endif // WPIUTIL_WPI_RAW_UV_OSTREAM_H_
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