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| 1 // Copyright 2016 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_FPDFAPI_FPDF_PARSER_CPDF_SYNTAX_PARSER_H_ | |
| 8 #define CORE_FPDFAPI_FPDF_PARSER_CPDF_SYNTAX_PARSER_H_ | |
| 9 | |
| 10 #include <memory> | |
| 11 | |
| 12 #include "core/fxcrt/cfx_string_pool_template.h" | |
| 13 #include "core/fxcrt/cfx_weak_ptr.h" | |
| 14 #include "core/fxcrt/fx_basic.h" | |
| 15 | |
| 16 class CPDF_CryptoHandler; | |
| 17 class CPDF_Dictionary; | |
| 18 class CPDF_IndirectObjectHolder; | |
| 19 class CPDF_Object; | |
| 20 class CPDF_Stream; | |
| 21 class IFX_FileRead; | |
| 22 | |
| 23 class CPDF_SyntaxParser { | |
| 24 public: | |
| 25 CPDF_SyntaxParser(); | |
| 26 explicit CPDF_SyntaxParser(const CFX_WeakPtr<CFX_ByteStringPool>& pPool); | |
| 27 ~CPDF_SyntaxParser(); | |
| 28 | |
| 29 void InitParser(IFX_FileRead* pFileAccess, uint32_t HeaderOffset); | |
| 30 | |
| 31 FX_FILESIZE SavePos() const { return m_Pos; } | |
| 32 void RestorePos(FX_FILESIZE pos) { m_Pos = pos; } | |
| 33 | |
| 34 CPDF_Object* GetObject(CPDF_IndirectObjectHolder* pObjList, | |
| 35 uint32_t objnum, | |
| 36 uint32_t gennum, | |
| 37 FX_BOOL bDecrypt); | |
| 38 CPDF_Object* GetObjectForStrict(CPDF_IndirectObjectHolder* pObjList, | |
| 39 uint32_t objnum, | |
| 40 uint32_t gennum); | |
| 41 CFX_ByteString GetKeyword(); | |
| 42 | |
| 43 void ToNextLine(); | |
| 44 void ToNextWord(); | |
| 45 | |
| 46 FX_BOOL SearchWord(const CFX_ByteStringC& word, | |
| 47 FX_BOOL bWholeWord, | |
| 48 FX_BOOL bForward, | |
| 49 FX_FILESIZE limit); | |
| 50 int SearchMultiWord(const CFX_ByteStringC& words, | |
| 51 FX_BOOL bWholeWord, | |
| 52 FX_FILESIZE limit); | |
| 53 FX_FILESIZE FindTag(const CFX_ByteStringC& tag, FX_FILESIZE limit); | |
| 54 | |
| 55 void SetEncrypt(std::unique_ptr<CPDF_CryptoHandler> pCryptoHandler); | |
| 56 | |
| 57 FX_BOOL ReadBlock(uint8_t* pBuf, uint32_t size); | |
| 58 FX_BOOL GetCharAt(FX_FILESIZE pos, uint8_t& ch); | |
| 59 CFX_ByteString GetNextWord(bool* bIsNumber); | |
| 60 | |
| 61 private: | |
| 62 friend class CPDF_Parser; | |
| 63 friend class CPDF_DataAvail; | |
| 64 friend class cpdf_syntax_parser_ReadHexString_Test; | |
| 65 | |
| 66 static const int kParserMaxRecursionDepth = 64; | |
| 67 static int s_CurrentRecursionDepth; | |
| 68 | |
| 69 uint32_t GetDirectNum(); | |
| 70 FX_BOOL GetNextChar(uint8_t& ch); | |
| 71 FX_BOOL GetCharAtBackward(FX_FILESIZE pos, uint8_t& ch); | |
| 72 void GetNextWordInternal(bool* bIsNumber); | |
| 73 bool IsWholeWord(FX_FILESIZE startpos, | |
| 74 FX_FILESIZE limit, | |
| 75 const CFX_ByteStringC& tag, | |
| 76 FX_BOOL checkKeyword); | |
| 77 | |
| 78 CFX_ByteString ReadString(); | |
| 79 CFX_ByteString ReadHexString(); | |
| 80 unsigned int ReadEOLMarkers(FX_FILESIZE pos); | |
| 81 CPDF_Stream* ReadStream(CPDF_Dictionary* pDict, | |
| 82 uint32_t objnum, | |
| 83 uint32_t gennum); | |
| 84 | |
| 85 CFX_ByteString MaybeIntern(const CFX_ByteString& str); | |
| 86 | |
| 87 FX_FILESIZE m_Pos; | |
| 88 int m_MetadataObjnum; | |
| 89 IFX_FileRead* m_pFileAccess; | |
| 90 FX_FILESIZE m_HeaderOffset; | |
| 91 FX_FILESIZE m_FileLen; | |
| 92 uint8_t* m_pFileBuf; | |
| 93 uint32_t m_BufSize; | |
| 94 FX_FILESIZE m_BufOffset; | |
| 95 std::unique_ptr<CPDF_CryptoHandler> m_pCryptoHandler; | |
| 96 uint8_t m_WordBuffer[257]; | |
| 97 uint32_t m_WordSize; | |
| 98 CFX_WeakPtr<CFX_ByteStringPool> m_pPool; | |
| 99 }; | |
| 100 | |
| 101 #endif // CORE_FPDFAPI_FPDF_PARSER_CPDF_SYNTAX_PARSER_H_ | |
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Chromium Code Reviews
Issue 2392603004:
Move core/fpdfapi/fpdf_parser to core/fpdfapi/parser (Closed)
