// Copyright 2017 PDFium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
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#ifndef CORE_FXCRT_CFX_BINARYBUF_H_
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#define CORE_FXCRT_CFX_BINARYBUF_H_
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#include <memory>
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#include "core/fxcrt/fx_memory.h"
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#include "core/fxcrt/fx_string.h"
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#include "core/fxcrt/fx_system.h"
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class CFX_BinaryBuf {
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public:
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CFX_BinaryBuf();
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virtual ~CFX_BinaryBuf();
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uint8_t* GetBuffer() const { return m_pBuffer.get(); }
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size_t GetSize() const { return m_DataSize; }
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virtual size_t GetLength() const;
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bool IsEmpty() const { return GetLength() == 0; }
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void Clear();
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void EstimateSize(size_t size, size_t alloc_step = 0);
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void AppendBlock(const void* pBuf, size_t size);
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void AppendString(const ByteString& str) {
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AppendBlock(str.c_str(), str.GetLength());
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}
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void AppendByte(uint8_t byte) {
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ExpandBuf(1);
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m_pBuffer.get()[m_DataSize++] = byte;
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}
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void Delete(size_t start_index, size_t count);
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// Releases ownership of |m_pBuffer| and returns it.
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std::unique_ptr<uint8_t, FxFreeDeleter> DetachBuffer();
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protected:
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void ExpandBuf(size_t size);
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size_t m_AllocStep;
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size_t m_AllocSize;
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size_t m_DataSize;
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std::unique_ptr<uint8_t, FxFreeDeleter> m_pBuffer;
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};
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#endif // CORE_FXCRT_CFX_BINARYBUF_H_
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