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

fpdfsdk/fpdfview.cpp

 // 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
 
 #include "public/fpdfview.h"
 
 #include <memory>
 #include <utility>
@@ skipping 140 matching lines @@
   FX_SAFE_FILESIZE newPos = pdfium::base::checked_cast<FX_FILESIZE>(size);
   newPos += offset;
   if (!newPos.IsValid() ||
       newPos.ValueOrDie() > static_cast<FX_FILESIZE>(m_FileAccess.m_FileLen)) {
     return false;
   }
   return !!m_FileAccess.m_GetBlock(m_FileAccess.m_Param, offset,
                                    reinterpret_cast<uint8_t*>(buffer), size);
 }
 
-}  // namespace
+#ifdef PDF_ENABLE_XFA
+class CFPDF_FileStream : public IFX_SeekableStream {
+ public:
+  explicit CFPDF_FileStream(FPDF_FILEHANDLER* pFS);
+  ~CFPDF_FileStream() override {}
 
-UnderlyingDocumentType* UnderlyingFromFPDFDocument(FPDF_DOCUMENT doc) {
-  return static_cast<UnderlyingDocumentType*>(doc);
-}
+  // 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;
 
-FPDF_DOCUMENT FPDFDocumentFromUnderlying(UnderlyingDocumentType* doc) {
-  return static_cast<FPDF_DOCUMENT>(doc);
-}
+  void SetPosition(FX_FILESIZE pos) { m_nCurPos = pos; }
 
-UnderlyingPageType* UnderlyingFromFPDFPage(FPDF_PAGE page) {
-  return static_cast<UnderlyingPageType*>(page);
-}
+ protected:
+  FPDF_FILEHANDLER* m_pFS;
+  FX_FILESIZE m_nCurPos;
+};
 
-CPDF_Document* CPDFDocumentFromFPDFDocument(FPDF_DOCUMENT doc) {
-#ifdef PDF_ENABLE_XFA
-  return doc ? UnderlyingFromFPDFDocument(doc)->GetPDFDoc() : nullptr;
-#else   // PDF_ENABLE_XFA
-  return UnderlyingFromFPDFDocument(doc);
-#endif  // PDF_ENABLE_XFA
-}
-
-FPDF_DOCUMENT FPDFDocumentFromCPDFDocument(CPDF_Document* doc) {
-#ifdef PDF_ENABLE_XFA
-  return doc ? FPDFDocumentFromUnderlying(
-                   new CPDFXFA_Context(pdfium::WrapUnique(doc)))
-             : nullptr;
-#else   // PDF_ENABLE_XFA
-  return FPDFDocumentFromUnderlying(doc);
-#endif  // PDF_ENABLE_XFA
-}
-
-CPDF_Page* CPDFPageFromFPDFPage(FPDF_PAGE page) {
-#ifdef PDF_ENABLE_XFA
-  return page ? UnderlyingFromFPDFPage(page)->GetPDFPage() : nullptr;
-#else   // PDF_ENABLE_XFA
-  return UnderlyingFromFPDFPage(page);
-#endif  // PDF_ENABLE_XFA
-}
-
-CFX_DIBitmap* CFXBitmapFromFPDFBitmap(FPDF_BITMAP bitmap) {
-  return static_cast<CFX_DIBitmap*>(bitmap);
-}
-
-#ifdef PDF_ENABLE_XFA
 CFPDF_FileStream::CFPDF_FileStream(FPDF_FILEHANDLER* pFS) {
   m_pFS = pFS;
   m_nCurPos = 0;
 }
 
 IFX_SeekableStream* CFPDF_FileStream::Retain() {
   return this;
 }
 
 void CFPDF_FileStream::Release() {
@@ skipping 64 matching lines @@
 }
 
 bool CFPDF_FileStream::Flush() {
   if (!m_pFS || !m_pFS->Flush)
     return true;
 
   return m_pFS->Flush(m_pFS->clientData) == 0;
 }
 #endif  // PDF_ENABLE_XFA
 
+}  // namespace
+
+UnderlyingDocumentType* UnderlyingFromFPDFDocument(FPDF_DOCUMENT doc) {
+  return static_cast<UnderlyingDocumentType*>(doc);
+}
+
+FPDF_DOCUMENT FPDFDocumentFromUnderlying(UnderlyingDocumentType* doc) {
+  return static_cast<FPDF_DOCUMENT>(doc);
+}
+
+UnderlyingPageType* UnderlyingFromFPDFPage(FPDF_PAGE page) {
+  return static_cast<UnderlyingPageType*>(page);
+}
+
+CPDF_Document* CPDFDocumentFromFPDFDocument(FPDF_DOCUMENT doc) {
+#ifdef PDF_ENABLE_XFA
+  return doc ? UnderlyingFromFPDFDocument(doc)->GetPDFDoc() : nullptr;
+#else   // PDF_ENABLE_XFA
+  return UnderlyingFromFPDFDocument(doc);
+#endif  // PDF_ENABLE_XFA
+}
+
+FPDF_DOCUMENT FPDFDocumentFromCPDFDocument(CPDF_Document* doc) {
+#ifdef PDF_ENABLE_XFA
+  return doc ? FPDFDocumentFromUnderlying(
+                   new CPDFXFA_Context(pdfium::WrapUnique(doc)))
+             : nullptr;
+#else   // PDF_ENABLE_XFA
+  return FPDFDocumentFromUnderlying(doc);
+#endif  // PDF_ENABLE_XFA
+}
+
+CPDF_Page* CPDFPageFromFPDFPage(FPDF_PAGE page) {
+#ifdef PDF_ENABLE_XFA
+  return page ? UnderlyingFromFPDFPage(page)->GetPDFPage() : nullptr;
+#else   // PDF_ENABLE_XFA
+  return UnderlyingFromFPDFPage(page);
+#endif  // PDF_ENABLE_XFA
+}
+
+CFX_DIBitmap* CFXBitmapFromFPDFBitmap(FPDF_BITMAP bitmap) {
+  return static_cast<CFX_DIBitmap*>(bitmap);
+}
+
 IFX_SeekableReadStream* MakeSeekableReadStream(FPDF_FILEACCESS* pFileAccess) {
   return new CPDF_CustomAccess(pFileAccess);
 }
 
+#ifdef PDF_ENABLE_XFA
+IFX_SeekableStream* MakeSeekableStream(FPDF_FILEHANDLER* pFilehandler) {
+  return new CFPDF_FileStream(pFilehandler);
+}
+#endif  // PDF_ENABLE_XFA
+
 // 0 bit: FPDF_POLICY_MACHINETIME_ACCESS
 static uint32_t foxit_sandbox_policy = 0xFFFFFFFF;
 
 void FSDK_SetSandBoxPolicy(FPDF_DWORD policy, FPDF_BOOL enable) {
   switch (policy) {
     case FPDF_POLICY_MACHINETIME_ACCESS: {
       if (enable)
         foxit_sandbox_policy |= 0x01;
       else
         foxit_sandbox_policy &= 0xFFFFFFFE;
@@ skipping 891 matching lines @@
   if (!buffer) {
     *buflen = len;
   } else if (len <= *buflen) {
     memcpy(buffer, utf16Name.c_str(), len);
     *buflen = len;
   } else {
     *buflen = -1;
   }
   return (FPDF_DEST)pDestObj;
 }