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| 1 // Copyright 2016 PDFium Authors. All rights reserved. | 1 // Copyright 2016 PDFium Authors. All rights reserved. |
| 2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
| 4 | 4 |
| 5 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com | 5 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com |
| 6 | 6 |
| 7 #ifndef CORE_FPDFAPI_FPDF_PARSER_CPDF_SYNTAX_PARSER_H_ | 7 #ifndef CORE_FPDFAPI_FPDF_PARSER_CPDF_SYNTAX_PARSER_H_ |
| 8 #define CORE_FPDFAPI_FPDF_PARSER_CPDF_SYNTAX_PARSER_H_ | 8 #define CORE_FPDFAPI_FPDF_PARSER_CPDF_SYNTAX_PARSER_H_ |
| 9 | 9 |
| 10 #include <memory> | 10 #include <memory> |
| 11 | 11 |
| 12 #include "core/fxcrt/include/fx_basic.h" | 12 #include "core/fxcrt/include/fx_basic.h" |
| 13 | 13 |
| 14 class CPDF_Dictionary; | 14 class CPDF_Dictionary; |
| 15 class CPDF_IndirectObjectHolder; | 15 class CPDF_IndirectObjectHolder; |
| 16 class CPDF_Object; | 16 class CPDF_Object; |
| 17 class CPDF_Stream; | 17 class CPDF_Stream; |
| 18 class IFX_FileRead; | 18 class IFX_FileRead; |
| 19 class IPDF_CryptoHandler; | 19 class IPDF_CryptoHandler; |
| 20 | 20 |
| 21 class CPDF_SyntaxParser { | 21 class CPDF_SyntaxParser { |
| 22 public: | 22 public: |
| 23 CPDF_SyntaxParser(); | 23 CPDF_SyntaxParser(); |
| 24 ~CPDF_SyntaxParser(); | 24 ~CPDF_SyntaxParser(); |
| 25 | 25 |
| 26 void InitParser(IFX_FileRead* pFileAccess, FX_DWORD HeaderOffset); | 26 void InitParser(IFX_FileRead* pFileAccess, uint32_t HeaderOffset); |
| 27 | 27 |
| 28 FX_FILESIZE SavePos() const { return m_Pos; } | 28 FX_FILESIZE SavePos() const { return m_Pos; } |
| 29 void RestorePos(FX_FILESIZE pos) { m_Pos = pos; } | 29 void RestorePos(FX_FILESIZE pos) { m_Pos = pos; } |
| 30 | 30 |
| 31 CPDF_Object* GetObject(CPDF_IndirectObjectHolder* pObjList, | 31 CPDF_Object* GetObject(CPDF_IndirectObjectHolder* pObjList, |
| 32 FX_DWORD objnum, | 32 uint32_t objnum, |
| 33 FX_DWORD gennum, | 33 uint32_t gennum, |
| 34 FX_BOOL bDecrypt); | 34 FX_BOOL bDecrypt); |
| 35 CPDF_Object* GetObjectByStrict(CPDF_IndirectObjectHolder* pObjList, | 35 CPDF_Object* GetObjectByStrict(CPDF_IndirectObjectHolder* pObjList, |
| 36 FX_DWORD objnum, | 36 uint32_t objnum, |
| 37 FX_DWORD gennum); | 37 uint32_t gennum); |
| 38 CFX_ByteString GetKeyword(); | 38 CFX_ByteString GetKeyword(); |
| 39 | 39 |
| 40 void ToNextLine(); | 40 void ToNextLine(); |
| 41 void ToNextWord(); | 41 void ToNextWord(); |
| 42 | 42 |
| 43 FX_BOOL SearchWord(const CFX_ByteStringC& word, | 43 FX_BOOL SearchWord(const CFX_ByteStringC& word, |
| 44 FX_BOOL bWholeWord, | 44 FX_BOOL bWholeWord, |
| 45 FX_BOOL bForward, | 45 FX_BOOL bForward, |
| 46 FX_FILESIZE limit); | 46 FX_FILESIZE limit); |
| 47 int SearchMultiWord(const CFX_ByteStringC& words, | 47 int SearchMultiWord(const CFX_ByteStringC& words, |
| 48 FX_BOOL bWholeWord, | 48 FX_BOOL bWholeWord, |
| 49 FX_FILESIZE limit); | 49 FX_FILESIZE limit); |
| 50 FX_FILESIZE FindTag(const CFX_ByteStringC& tag, FX_FILESIZE limit); | 50 FX_FILESIZE FindTag(const CFX_ByteStringC& tag, FX_FILESIZE limit); |
| 51 | 51 |
| 52 void SetEncrypt(std::unique_ptr<IPDF_CryptoHandler> pCryptoHandler); | 52 void SetEncrypt(std::unique_ptr<IPDF_CryptoHandler> pCryptoHandler); |
| 53 | 53 |
| 54 FX_BOOL ReadBlock(uint8_t* pBuf, FX_DWORD size); | 54 FX_BOOL ReadBlock(uint8_t* pBuf, uint32_t size); |
| 55 FX_BOOL GetCharAt(FX_FILESIZE pos, uint8_t& ch); | 55 FX_BOOL GetCharAt(FX_FILESIZE pos, uint8_t& ch); |
| 56 CFX_ByteString GetNextWord(bool* bIsNumber); | 56 CFX_ByteString GetNextWord(bool* bIsNumber); |
| 57 | 57 |
| 58 private: | 58 private: |
| 59 friend class CPDF_Parser; | 59 friend class CPDF_Parser; |
| 60 friend class CPDF_DataAvail; | 60 friend class CPDF_DataAvail; |
| 61 friend class cpdf_syntax_parser_ReadHexString_Test; | 61 friend class cpdf_syntax_parser_ReadHexString_Test; |
| 62 | 62 |
| 63 static const int kParserMaxRecursionDepth = 64; | 63 static const int kParserMaxRecursionDepth = 64; |
| 64 static int s_CurrentRecursionDepth; | 64 static int s_CurrentRecursionDepth; |
| 65 | 65 |
| 66 uint32_t GetDirectNum(); | 66 uint32_t GetDirectNum(); |
| 67 | 67 |
| 68 FX_BOOL GetNextChar(uint8_t& ch); | 68 FX_BOOL GetNextChar(uint8_t& ch); |
| 69 FX_BOOL GetCharAtBackward(FX_FILESIZE pos, uint8_t& ch); | 69 FX_BOOL GetCharAtBackward(FX_FILESIZE pos, uint8_t& ch); |
| 70 void GetNextWordInternal(bool* bIsNumber); | 70 void GetNextWordInternal(bool* bIsNumber); |
| 71 bool IsWholeWord(FX_FILESIZE startpos, | 71 bool IsWholeWord(FX_FILESIZE startpos, |
| 72 FX_FILESIZE limit, | 72 FX_FILESIZE limit, |
| 73 const CFX_ByteStringC& tag, | 73 const CFX_ByteStringC& tag, |
| 74 FX_BOOL checkKeyword); | 74 FX_BOOL checkKeyword); |
| 75 | 75 |
| 76 CFX_ByteString ReadString(); | 76 CFX_ByteString ReadString(); |
| 77 CFX_ByteString ReadHexString(); | 77 CFX_ByteString ReadHexString(); |
| 78 unsigned int ReadEOLMarkers(FX_FILESIZE pos); | 78 unsigned int ReadEOLMarkers(FX_FILESIZE pos); |
| 79 CPDF_Stream* ReadStream(CPDF_Dictionary* pDict, | 79 CPDF_Stream* ReadStream(CPDF_Dictionary* pDict, |
| 80 FX_DWORD objnum, | 80 uint32_t objnum, |
| 81 FX_DWORD gennum); | 81 uint32_t gennum); |
| 82 | 82 |
| 83 FX_FILESIZE m_Pos; | 83 FX_FILESIZE m_Pos; |
| 84 int m_MetadataObjnum; | 84 int m_MetadataObjnum; |
| 85 IFX_FileRead* m_pFileAccess; | 85 IFX_FileRead* m_pFileAccess; |
| 86 FX_DWORD m_HeaderOffset; | 86 uint32_t m_HeaderOffset; |
| 87 FX_FILESIZE m_FileLen; | 87 FX_FILESIZE m_FileLen; |
| 88 uint8_t* m_pFileBuf; | 88 uint8_t* m_pFileBuf; |
| 89 FX_DWORD m_BufSize; | 89 uint32_t m_BufSize; |
| 90 FX_FILESIZE m_BufOffset; | 90 FX_FILESIZE m_BufOffset; |
| 91 std::unique_ptr<IPDF_CryptoHandler> m_pCryptoHandler; | 91 std::unique_ptr<IPDF_CryptoHandler> m_pCryptoHandler; |
| 92 uint8_t m_WordBuffer[257]; | 92 uint8_t m_WordBuffer[257]; |
| 93 FX_DWORD m_WordSize; | 93 uint32_t m_WordSize; |
| 94 }; | 94 }; |
| 95 | 95 |
| 96 #endif // CORE_FPDFAPI_FPDF_PARSER_CPDF_SYNTAX_PARSER_H_ | 96 #endif // CORE_FPDFAPI_FPDF_PARSER_CPDF_SYNTAX_PARSER_H_ |
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