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| 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 XFA_FXFA_INCLUDE_XFA_CHECKSUM_H_ | |
| 8 #define XFA_FXFA_INCLUDE_XFA_CHECKSUM_H_ | |
| 9 | |
| 10 #include "xfa/fde/xml/cfx_saxreader.h" | |
| 11 #include "xfa/fxfa/include/fxfa.h" | |
| 12 | |
| 13 class CXFA_SAXReaderHandler; | |
| 14 class CXFA_ChecksumContext; | |
| 15 | |
| 16 class CXFA_SAXContext { | |
| 17 public: | |
| 18 CXFA_SAXContext() : m_eNode(CFX_SAXItem::Type::Unknown) {} | |
| 19 | |
| 20 CFX_ByteTextBuf m_TextBuf; | |
| 21 CFX_ByteString m_bsTagName; | |
| 22 CFX_SAXItem::Type m_eNode; | |
| 23 }; | |
| 24 | |
| 25 class CXFA_SAXReaderHandler { | |
| 26 public: | |
| 27 CXFA_SAXReaderHandler(CXFA_ChecksumContext* pContext); | |
| 28 ~CXFA_SAXReaderHandler(); | |
| 29 | |
| 30 CXFA_SAXContext* OnTagEnter(const CFX_ByteStringC& bsTagName, | |
| 31 CFX_SAXItem::Type eType, | |
| 32 uint32_t dwStartPos); | |
| 33 void OnTagAttribute(CXFA_SAXContext* pTag, | |
| 34 const CFX_ByteStringC& bsAttri, | |
| 35 const CFX_ByteStringC& bsValue); | |
| 36 void OnTagBreak(CXFA_SAXContext* pTag); | |
| 37 void OnTagData(CXFA_SAXContext* pTag, | |
| 38 CFX_SAXItem::Type eType, | |
| 39 const CFX_ByteStringC& bsData, | |
| 40 uint32_t dwStartPos); | |
| 41 void OnTagClose(CXFA_SAXContext* pTag, uint32_t dwEndPos); | |
| 42 void OnTagEnd(CXFA_SAXContext* pTag, | |
| 43 const CFX_ByteStringC& bsTagName, | |
| 44 uint32_t dwEndPos); | |
| 45 | |
| 46 void OnTargetData(CXFA_SAXContext* pTag, | |
| 47 CFX_SAXItem::Type eType, | |
| 48 const CFX_ByteStringC& bsData, | |
| 49 uint32_t dwStartPos); | |
| 50 | |
| 51 protected: | |
| 52 void UpdateChecksum(FX_BOOL bCheckSpace); | |
| 53 | |
| 54 CXFA_ChecksumContext* m_pContext; | |
| 55 CXFA_SAXContext m_SAXContext; | |
| 56 }; | |
| 57 | |
| 58 class CXFA_ChecksumContext { | |
| 59 public: | |
| 60 CXFA_ChecksumContext(); | |
| 61 ~CXFA_ChecksumContext(); | |
| 62 | |
| 63 void StartChecksum(); | |
| 64 void Update(const CFX_ByteStringC& bsText); | |
| 65 FX_BOOL UpdateChecksum(IFX_FileRead* pSrcFile, | |
| 66 FX_FILESIZE offset = 0, | |
| 67 size_t size = 0); | |
| 68 void FinishChecksum(); | |
| 69 CFX_ByteString GetChecksum() const; | |
| 70 | |
| 71 protected: | |
| 72 CFX_SAXReader* m_pSAXReader; | |
| 73 uint8_t* m_pByteContext; | |
| 74 CFX_ByteString m_bsChecksum; | |
| 75 }; | |
| 76 | |
| 77 #endif // XFA_FXFA_INCLUDE_XFA_CHECKSUM_H_ | |
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