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Diffstat (limited to 'xfa/include/fxfa/xfa_checksum.h')
-rw-r--r--xfa/include/fxfa/xfa_checksum.h74
1 files changed, 74 insertions, 0 deletions
diff --git a/xfa/include/fxfa/xfa_checksum.h b/xfa/include/fxfa/xfa_checksum.h
new file mode 100644
index 0000000000..3ca79efe58
--- /dev/null
+++ b/xfa/include/fxfa/xfa_checksum.h
@@ -0,0 +1,74 @@
+// 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_INCLUDE_FXFA_XFA_CHECKSUM_H_
+#define XFA_INCLUDE_FXFA_XFA_CHECKSUM_H_
+
+#include "xfa/fgas/xml/fgas_sax.h"
+#include "xfa/include/fxfa/fxfa.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,
+ uint32_t 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,
+ uint32_t dwStartPos);
+ virtual void OnTagClose(void* pTag, uint32_t dwEndPos);
+ virtual void OnTagEnd(void* pTag,
+ const CFX_ByteStringC& bsTagName,
+ uint32_t dwEndPos);
+
+ virtual void OnTargetData(void* pTag,
+ FX_SAXNODE eType,
+ const CFX_ByteStringC& bsData,
+ uint32_t dwStartPos);
+
+ protected:
+ void UpdateChecksum(FX_BOOL bCheckSpace);
+ CXFA_ChecksumContext* m_pContext;
+ CXFA_SAXContext m_SAXContext;
+};
+
+class CXFA_ChecksumContext {
+ public:
+ CXFA_ChecksumContext();
+ ~CXFA_ChecksumContext();
+
+ void Release() { delete this; }
+ FX_BOOL StartChecksum();
+ FX_BOOL UpdateChecksum(IFX_FileRead* pSrcFile,
+ FX_FILESIZE offset = 0,
+ size_t size = 0);
+ void FinishChecksum();
+ 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_INCLUDE_FXFA_XFA_CHECKSUM_H_