Support linearized loading

core/src/fpdfapi/fpdf_parser/parser_int.h

Index: core/src/fpdfapi/fpdf_parser/parser_int.h
diff --git a/core/src/fpdfapi/fpdf_parser/parser_int.h b/core/src/fpdfapi/fpdf_parser/parser_int.h
new file mode 100644
index 0000000000000000000000000000000000000000..b23286ce731a86445437504e3c137fdca8708f19
--- /dev/null
+++ b/core/src/fpdfapi/fpdf_parser/parser_int.h
@@ -0,0 +1,49 @@
+// 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 2015 Foxit Software Inc. http://www.foxitsoftware.com

[Tom Sepez, 2015/09/22 19:17:59]

Nah, no need to update this every time the year changes.

[Lei Zhang, 2015/09/22 23:33:43]

Well, if FoxIt is writing this code in 2015...

Also, line 1 says 2014 still.

[jun_fang, 2015/09/23 12:26:58]

OK. will keep 2014 here.

+
+#ifndef _FPDFAPI_PARSER_INT_H_

[Lei Zhang, 2015/09/22 23:33:43]

CORE_SRC_FPDFAPI_FPDF_PARSER_PARSER_INT_H_

[jun_fang, 2015/09/23 12:26:58]

Acknowledged.

+#define _FPDFAPI_PARSER_INT_H_
+
+class CPDF_DataAvail;
+
+class CPDF_HintTables {
+ public:
+  CPDF_HintTables(CPDF_DataAvail* pDataAvail, CPDF_Dictionary* pLinearized)
+      : m_pLinearizedDict(pLinearized),
+        m_pHintStream(nullptr),
+        m_pDataAvail(pDataAvail),
+        m_nFirstPageSharedObjs(0),
+        m_szFirstPageObjOffset(0) {}
+  ~CPDF_HintTables();
+  FX_BOOL GetPagePos(int index,
+                     FX_FILESIZE& szPageStartPos,
+                     FX_FILESIZE& szPageLength,
+                     FX_DWORD& dwObjNum);
+  FX_BOOL CheckPage(int index, IFX_DownloadHints* pHints);
+  FX_BOOL LoadHintStream(CPDF_Stream* pHintStream);
+
+ protected:
+  FX_BOOL ReadPageHintTable(CFX_BitStream& bs);
+  FX_BOOL ReadSharedObjHintTable(CFX_BitStream& bs);
+  FX_DWORD GetItemLength(int index, const CFX_FileSizeArray& szArray);
+
+ private:
+  int ReadPrimaryHintStreamOffset(CFX_BitStream& bs) const;
+  int ReadPrimaryHintStreamLength(CFX_BitStream& bs) const;
+
+  CPDF_Dictionary* m_pLinearizedDict;
+  CPDF_Stream* m_pHintStream;
+  CPDF_DataAvail* m_pDataAvail;
+  FX_DWORD m_nFirstPageSharedObjs;
+  FX_FILESIZE m_szFirstPageObjOffset;
+  CFX_DWordArray m_dwDeltaNObjsArray;
+  CFX_DWordArray m_dwNSharedObjsArray;
+  CFX_DWordArray m_dwSharedObjNumArray;
+  CFX_DWordArray m_dwIdentifierArray;
+  CFX_FileSizeArray m_szPageOffsetArray;
+  CFX_FileSizeArray m_szSharedObjOffsetArray;
+};
+#endif  //_FPDFAPI_PARSER_INT_H_