Remove more casts, part 7.

fpdfsdk/fpdfxfa/fpdfxfa_doc.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 "fpdfsdk/fpdfxfa/include/fpdfxfa_doc.h"
 
 #include "core/fpdfapi/fpdf_parser/include/cpdf_array.h"
 #include "core/fpdfapi/fpdf_parser/include/cpdf_document.h"
@@ skipping 659 matching lines @@
       return;
 
     int size = pArray->GetCount();
     for (int i = 1; i < size; i += 2) {
       CPDF_Object* pPDFObj = pArray->GetObjectAt(i);
       CPDF_Object* pPrePDFObj = pArray->GetObjectAt(i - 1);
       if (!pPrePDFObj->IsString())
         continue;
       if (!pPDFObj->IsReference())
         continue;
-      CPDF_Object* pDirectObj = pPDFObj->GetDirect();
-      if (!pDirectObj->IsStream())
+      CPDF_Stream* pStream = ToStream(pPDFObj->GetDirect());
+      if (!pStream)
         continue;
       if (pPrePDFObj->GetString() == "form") {
         m_pXFADocView->GetDoc()->SavePackage(XFA_HASHCODE_Form, &fileWrite,
                                              nullptr);
       } else if (pPrePDFObj->GetString() == "datasets") {
         m_pXFADocView->GetDoc()->SavePackage(XFA_HASHCODE_Datasets, &fileWrite,
                                              nullptr);
       } else {
         if (i == size - 1) {
           CFX_WideString wPath = CFX_WideString::FromUTF16LE(
               reinterpret_cast<const unsigned short*>(bs.c_str()),
               bs.GetLength() / sizeof(unsigned short));
           CFX_ByteString bPath = wPath.UTF8Encode();
           const char* szFormat =
               "\n<pdf href=\"%s\" xmlns=\"http://ns.adobe.com/xdp/pdf/\"/>";
           content.Format(szFormat, bPath.c_str());
           fileWrite.WriteBlock(content.c_str(), fileWrite.GetSize(),
                                content.GetLength());
         }
-
-        CPDF_Stream* pStream = (CPDF_Stream*)pDirectObj;
-        CPDF_StreamAcc* pAcc = new CPDF_StreamAcc;
+        std::unique_ptr<CPDF_StreamAcc> pAcc(new CPDF_StreamAcc);
         pAcc->LoadAllData(pStream);
         fileWrite.WriteBlock(pAcc->GetData(), fileWrite.GetSize(),
                              pAcc->GetSize());
-        delete pAcc;
       }
     }
   }
   if (!fileWrite.Flush()) {
     // Ignoring flush error.
   }
 }
 void CPDFXFA_Document::ImportData(CXFA_FFDoc* hDoc,
                                   const CFX_WideString& wsFilePath) {}
 
@@ skipping 520 matching lines @@
     return FALSE;
 
   if (!m_pJSContext) {
     m_pSDKDoc->GetEnv()->GetJSRuntime()->SetReaderDocument(m_pSDKDoc);
     m_pJSContext = m_pSDKDoc->GetEnv()->GetJSRuntime()->NewContext();
   }
 
   return m_pSDKDoc->GetEnv()->GetJSRuntime()->GetValueByName(szPropName,
                                                              pValue);
 }