| // Copyright 2014 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 XFA_SRC_FXFA_SRC_APP_XFA_CHECKSUM_H_ |
| #define XFA_SRC_FXFA_SRC_APP_XFA_CHECKSUM_H_ |
| |
| #include "xfa/include/fxfa/fxfa.h" |
| #include "xfa/src/fgas/include/fx_sax.h" |
| |
| class CXFA_SAXReaderHandler; |
| class CXFA_ChecksumContext; |
| |
| class CXFA_SAXContext { |
| public: |
| CXFA_SAXContext() : m_eNode(FX_SAXNODE_Unknown) {} |
| CFX_ByteTextBuf m_TextBuf; |
| CFX_ByteString m_bsTagName; |
| FX_SAXNODE m_eNode; |
| }; |
| class CXFA_SAXReaderHandler : public IFX_SAXReaderHandler { |
| public: |
| CXFA_SAXReaderHandler(CXFA_ChecksumContext* pContext); |
| virtual ~CXFA_SAXReaderHandler(); |
| virtual void* OnTagEnter(const CFX_ByteStringC& bsTagName, |
| FX_SAXNODE eType, |
| FX_DWORD dwStartPos); |
| virtual void OnTagAttribute(void* pTag, |
| const CFX_ByteStringC& bsAttri, |
| const CFX_ByteStringC& bsValue); |
| virtual void OnTagBreak(void* pTag); |
| virtual void OnTagData(void* pTag, |
| FX_SAXNODE eType, |
| const CFX_ByteStringC& bsData, |
| FX_DWORD dwStartPos); |
| virtual void OnTagClose(void* pTag, FX_DWORD dwEndPos); |
| virtual void OnTagEnd(void* pTag, |
| const CFX_ByteStringC& bsTagName, |
| FX_DWORD dwEndPos); |
| |
| virtual void OnTargetData(void* pTag, |
| FX_SAXNODE eType, |
| const CFX_ByteStringC& bsData, |
| FX_DWORD dwStartPos); |
| |
| protected: |
| void UpdateChecksum(FX_BOOL bCheckSpace); |
| CXFA_ChecksumContext* m_pContext; |
| CXFA_SAXContext m_SAXContext; |
| }; |
| |
| class CXFA_ChecksumContext : public IXFA_ChecksumContext { |
| public: |
| CXFA_ChecksumContext(); |
| virtual ~CXFA_ChecksumContext(); |
| virtual void Release() { delete this; } |
| virtual FX_BOOL StartChecksum(); |
| virtual FX_BOOL UpdateChecksum(IFX_FileRead* pSrcFile, |
| FX_FILESIZE offset = 0, |
| size_t size = 0); |
| virtual void FinishChecksum(); |
| virtual void GetChecksum(CFX_ByteString& bsChecksum); |
| void Update(const CFX_ByteStringC& bsText); |
| |
| protected: |
| IFX_SAXReader* m_pSAXReader; |
| uint8_t* m_pByteContext; |
| CFX_ByteString m_bsChecksum; |
| }; |
| |
| #endif // XFA_SRC_FXFA_SRC_APP_XFA_CHECKSUM_H_ |