1 // Copyright 2014 PDFium Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com 6 7 #ifndef CORE_SRC_FPDFAPI_FPDF_PARSER_PARSER_INT_H_ 8 #define CORE_SRC_FPDFAPI_FPDF_PARSER_PARSER_INT_H_ 9 10 #include "core/include/fxcrt/fx_basic.h" 11 #include "core/include/fxcrt/fx_stream.h" 12 13 class CFX_BitStream; 14 class CPDF_DataAvail; 15 class CPDF_Dictionary; 16 class CPDF_Stream; 17 class IFX_DownloadHints; 18 19 class CPDF_HintTables { 20 public: 21 CPDF_HintTables(CPDF_DataAvail* pDataAvail, CPDF_Dictionary* pLinearized) 22 : m_pLinearizedDict(pLinearized), 23 m_pDataAvail(pDataAvail), 24 m_nFirstPageSharedObjs(0), 25 m_szFirstPageObjOffset(0) {} 26 ~CPDF_HintTables(); 27 28 FX_BOOL GetPagePos(int index, 29 FX_FILESIZE& szPageStartPos, 30 FX_FILESIZE& szPageLength, 31 FX_DWORD& dwObjNum); 32 IPDF_DataAvail::DocAvailStatus CheckPage(int index, 33 IFX_DownloadHints* pHints); 34 FX_BOOL LoadHintStream(CPDF_Stream* pHintStream); 35 36 protected: 37 FX_BOOL ReadPageHintTable(CFX_BitStream* hStream); 38 FX_BOOL ReadSharedObjHintTable(CFX_BitStream* hStream, FX_DWORD offset); 39 FX_DWORD GetItemLength(int index, const CFX_FileSizeArray& szArray); 40 41 private: 42 int ReadPrimaryHintStreamOffset() const; 43 int ReadPrimaryHintStreamLength() const; 44 45 CPDF_Dictionary* m_pLinearizedDict; 46 CPDF_DataAvail* m_pDataAvail; 47 FX_DWORD m_nFirstPageSharedObjs; 48 FX_FILESIZE m_szFirstPageObjOffset; 49 CFX_DWordArray m_dwDeltaNObjsArray; 50 CFX_DWordArray m_dwNSharedObjsArray; 51 CFX_DWordArray m_dwSharedObjNumArray; 52 CFX_DWordArray m_dwIdentifierArray; 53 CFX_FileSizeArray m_szPageOffsetArray; 54 CFX_FileSizeArray m_szSharedObjOffsetArray; 55 }; 56 57 #endif // CORE_SRC_FPDFAPI_FPDF_PARSER_PARSER_INT_H_ 58
