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// Copyright 2016 PDFium Authors. All rights reserved.
// 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. http://www.foxitsoftware.com
#ifndef CORE_FPDFAPI_PARSER_CPDF_LINEARIZED_HEADER_H_
#define CORE_FPDFAPI_PARSER_CPDF_LINEARIZED_HEADER_H_
#include <memory>
#include "core/fxcrt/fx_memory.h"
#include "core/fxcrt/fx_stream.h"
class CPDF_Dictionary;
class CPDF_Object;
class CPDF_SyntaxParser;
class CPDF_LinearizedHeader {
public:
~CPDF_LinearizedHeader();
static std::unique_ptr<CPDF_LinearizedHeader> Parse(
CPDF_SyntaxParser* parser);
// Will only return values > 0.
FX_FILESIZE GetFileSize() const { return m_szFileSize; }
uint32_t GetFirstPageNo() const { return m_dwFirstPageNo; }
// Will only return values > 0.
FX_FILESIZE GetMainXRefTableFirstEntryOffset() const {
return m_szMainXRefTableFirstEntryOffset;
}
uint32_t GetPageCount() const { return m_PageCount; }
// Will only return values > 0.
FX_FILESIZE GetFirstPageEndOffset() const { return m_szFirstPageEndOffset; }
// Will only return values > 0.
uint32_t GetFirstPageObjNum() const { return m_FirstPageObjNum; }
// Will only return values > 0.
FX_FILESIZE GetLastXRefOffset() const { return m_szLastXRefOffset; }
bool HasHintTable() const;
// Will only return values > 0.
FX_FILESIZE GetHintStart() const { return m_szHintStart; }
uint32_t GetHintLength() const { return m_HintLength; }
protected:
CPDF_LinearizedHeader(const CPDF_Dictionary* pDict,
FX_FILESIZE szLastXRefOffset);
private:
const FX_FILESIZE m_szFileSize;
const uint32_t m_dwFirstPageNo;
const FX_FILESIZE m_szMainXRefTableFirstEntryOffset;
const uint32_t m_PageCount;
const FX_FILESIZE m_szFirstPageEndOffset;
const uint32_t m_FirstPageObjNum;
const FX_FILESIZE m_szLastXRefOffset;
FX_FILESIZE m_szHintStart = 0;
uint32_t m_HintLength = 0;
};
#endif // CORE_FPDFAPI_PARSER_CPDF_LINEARIZED_HEADER_H_
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