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// Copyright 2017 The PDFium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
// Original code copyright 2014 Foxit Software Inc.
#include <stddef.h>
#include <stdint.h>
#include "core/fxcrt/bytestring.h"
#include "core/fxcrt/data_vector.h"
#include "third_party/base/span.h"
namespace fxcrt {
class BinaryBuffer {
BinaryBuffer(BinaryBuffer&& that) noexcept;
BinaryBuffer(const BinaryBuffer& that) = delete;
virtual ~BinaryBuffer();
// Moved-from value will be left empty.
BinaryBuffer& operator=(BinaryBuffer&& that) noexcept;
BinaryBuffer& operator=(const BinaryBuffer& that) = delete;
pdfium::span<uint8_t> GetMutableSpan();
pdfium::span<const uint8_t> GetSpan() const;
bool IsEmpty() const { return GetLength() == 0; }
size_t GetSize() const { return m_DataSize; } // In bytes.
virtual size_t GetLength() const; // In subclass-specific units.
void Clear();
void SetAllocStep(size_t step) { m_AllocStep = step; }
void EstimateSize(size_t size);
void AppendSpan(pdfium::span<const uint8_t> span);
void AppendString(const ByteString& str);
void AppendUint8(uint8_t value);
void AppendUint16(uint16_t value);
void AppendUint32(uint32_t value);
void AppendDouble(double value);
// Releases ownership of `m_pBuffer` and returns it.
DataVector<uint8_t> DetachBuffer();
void ExpandBuf(size_t size);
void DeleteBuf(size_t start_index, size_t count);
size_t m_AllocStep = 0;
size_t m_DataSize = 0;
DataVector<uint8_t> m_buffer;
} // namespace fxcrt
using fxcrt::BinaryBuffer;