1 files changed, 58 insertions, 0 deletions
diff --git a/xfa/src/fxfa/src/app/xfa_checksum.h b/xfa/src/fxfa/src/app/xfa_checksum.h
new file mode 100644
index 0000000000..5e2eca72f0
--- /dev/null
+++ b/xfa/src/fxfa/src/app/xfa_checksum.h
@@ -0,0 +1,58 @@
+// 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	_FXFA_FORMFILLER_CHECKSUM_IMP_H
+#define _FXFA_FORMFILLER_CHECKSUM_IMP_H
+class CXFA_SAXReaderHandler;
+class CXFA_ChecksumContext;
+class CXFA_SAXContext : public CFX_Object
+{
+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 CFX_Object
+{
+public:
+    CXFA_SAXReaderHandler(CXFA_ChecksumContext *pContext);
+    virtual ~CXFA_SAXReaderHandler();
+    virtual FX_LPVOID	OnTagEnter(FX_BSTR bsTagName, FX_SAXNODE eType, FX_DWORD dwStartPos);
+    virtual void		OnTagAttribute(FX_LPVOID pTag, FX_BSTR bsAttri, FX_BSTR bsValue);
+    virtual void		OnTagBreak(FX_LPVOID pTag);
+    virtual void		OnTagData(FX_LPVOID pTag, FX_SAXNODE eType, FX_BSTR bsData, FX_DWORD dwStartPos);
+    virtual void		OnTagClose(FX_LPVOID pTag, FX_DWORD dwEndPos);
+    virtual void		OnTagEnd(FX_LPVOID pTag, FX_BSTR bsTagName, FX_DWORD dwEndPos);
+
+    virtual void		OnTargetData(FX_LPVOID pTag, FX_SAXNODE eType, FX_BSTR 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 CFX_Object
+{
+public:
+    CXFA_ChecksumContext();
+    ~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(FX_BSTR bsText);
+protected:
+    IFX_SAXReader		*m_pSAXReader;
+    FX_LPBYTE			m_pByteContext;
+    CFX_ByteString		m_bsChecksum;
+};
+#endif