Make concrete stream classes private to .cpp, part 4.

fpdfsdk/fsdk_define.h

 // 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 FPDFSDK_FSDK_DEFINE_H_
 #define FPDFSDK_FSDK_DEFINE_H_
 
 #include "core/fpdfapi/parser/cpdf_parser.h"
@@ skipping 12 matching lines @@
 class CPDF_Annot;
 class CPDF_Page;
 class CPDF_PageRenderContext;
 class IFSDK_PAUSE_Adapter;
 
 // Layering prevents fxcrt from knowing about FPDF_FILEACCESS, so this can't
 // be a static method of IFX_SeekableReadStream.
 IFX_SeekableReadStream* MakeSeekableReadStream(FPDF_FILEACCESS* pFileAccess);
 
 #ifdef PDF_ENABLE_XFA
-class CFPDF_FileStream : public IFX_SeekableStream {
- public:
-  explicit CFPDF_FileStream(FPDF_FILEHANDLER* pFS);
-  ~CFPDF_FileStream() override {}
-
-  // IFX_SeekableStream:
-  IFX_SeekableStream* Retain() override;
-  void Release() override;
-  FX_FILESIZE GetSize() override;
-  bool IsEOF() override;
-  FX_FILESIZE GetPosition() override;
-  bool ReadBlock(void* buffer, FX_FILESIZE offset, size_t size) override;
-  size_t ReadBlock(void* buffer, size_t size) override;
-  bool WriteBlock(const void* buffer, FX_FILESIZE offset, size_t size) override;
-  bool Flush() override;
-
-  void SetPosition(FX_FILESIZE pos) { m_nCurPos = pos; }
-
- protected:
-  FPDF_FILEHANDLER* m_pFS;
-  FX_FILESIZE m_nCurPos;
-};
+// Layering prevents fxcrt from knowing about FPDF_FILEHANDLER, so this can't
+// be a static method of IFX_SeekableStream.
+IFX_SeekableStream* MakeSeekableStream(FPDF_FILEHANDLER* pFileHandler);
 #endif  // PDF_ENABLE_XFA
 
 // Object types for public FPDF_ types; these correspond to next layer down
 // from fpdfsdk. For master, these are CPDF_ types, but for XFA, these are
 // CPDFXFA_ types.
 #ifndef PDF_ENABLE_XFA
 using UnderlyingDocumentType = CPDF_Document;
 using UnderlyingPageType = CPDF_Page;
 #else   // PDF_ENABLE_XFA
 using UnderlyingDocumentType = CPDFXFA_Context;
@@ skipping 25 matching lines @@
                             int rotate,
                             int flags,
                             bool bNeedToRestore,
                             IFSDK_PAUSE_Adapter* pause);
 
 void CheckUnSupportError(CPDF_Document* pDoc, uint32_t err_code);
 void CheckUnSupportAnnot(CPDF_Document* pDoc, const CPDF_Annot* pPDFAnnot);
 void ProcessParseError(CPDF_Parser::Error err);
 
 #endif  // FPDFSDK_FSDK_DEFINE_H_