Remove Release() from CXFA_ChecksumContext

Review-Url: https://codereview.chromium.org/1991913002

5 files changed, 17 insertions, 18 deletions

diff --git a/fpdfsdk/fpdfsave.cpp b/fpdfsdk/fpdfsave.cpp
index c67db816a9..d48bfbb3b1 100644
--- a/fpdfsdk/fpdfsave.cpp
+++ b/fpdfsdk/fpdfsave.cpp
@@ -130,8 +130,7 @@ bool SaveXFADocumentData(CPDFXFA_Document* pDocument,
     else if (pPDFObj->GetString() == "template")
       iTemplate = i + 1;
   }
-  std::unique_ptr<CXFA_ChecksumContext, ReleaseDeleter<CXFA_ChecksumContext>>
-      pContext(new CXFA_ChecksumContext);
+  std::unique_ptr<CXFA_ChecksumContext> pContext(new CXFA_ChecksumContext);
   pContext->StartChecksum();
 
   // template
diff --git a/xfa/fxfa/app/xfa_checksum.cpp b/xfa/fxfa/app/xfa_checksum.cpp
index 195033bfab..1641816550 100644
--- a/xfa/fxfa/app/xfa_checksum.cpp
+++ b/xfa/fxfa/app/xfa_checksum.cpp
@@ -177,9 +177,11 @@ void CXFA_ChecksumContext::FinishChecksum() {
     m_pByteContext = NULL;
   }
 }
-void CXFA_ChecksumContext::GetChecksum(CFX_ByteString& bsChecksum) {
-  bsChecksum = m_bsChecksum;
+
+CFX_ByteString CXFA_ChecksumContext::GetChecksum() const {
+  return m_bsChecksum;
 }
+
 void CXFA_ChecksumContext::Update(const CFX_ByteStringC& bsText) {
   if (m_pByteContext) {
     CRYPT_SHA1Update(m_pByteContext, bsText.raw_str(), bsText.GetLength());
diff --git a/xfa/fxfa/app/xfa_ffdoc.cpp b/xfa/fxfa/app/xfa_ffdoc.cpp
index 8297dce9ec..8621430d3f 100644
--- a/xfa/fxfa/app/xfa_ffdoc.cpp
+++ b/xfa/fxfa/app/xfa_ffdoc.cpp
@@ -377,7 +377,7 @@ FX_BOOL CXFA_FFDoc::SavePackage(const CFX_WideStringC& wsPackage,
 
   CFX_ByteString bsChecksum;
   if (pCSContext)
-    pCSContext->GetChecksum(bsChecksum);
+    bsChecksum = pCSContext->GetChecksum();
 
   return pExport->Export(pFile, pNode, 0,
                          bsChecksum.GetLength() ? bsChecksum.c_str() : nullptr);
diff --git a/xfa/fxfa/include/xfa_checksum.h b/xfa/fxfa/include/xfa_checksum.h
index 6c7ea7a04c..f6b13e7cb7 100644
--- a/xfa/fxfa/include/xfa_checksum.h
+++ b/xfa/fxfa/include/xfa_checksum.h
@@ -60,14 +60,13 @@ class CXFA_ChecksumContext {
   CXFA_ChecksumContext();
   ~CXFA_ChecksumContext();
 
-  void Release() { delete this; }
   void StartChecksum();
+  void Update(const CFX_ByteStringC& bsText);
   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);
+  CFX_ByteString GetChecksum() const;
 
  protected:
   CFX_SAXReader* m_pSAXReader;
diff --git a/xfa/fxfa/parser/xfa_parser_imp.cpp b/xfa/fxfa/parser/xfa_parser_imp.cpp
index 01ea1d6fae..3369e59479 100644
--- a/xfa/fxfa/parser/xfa_parser_imp.cpp
+++ b/xfa/fxfa/parser/xfa_parser_imp.cpp
@@ -6,6 +6,8 @@
 
 #include "xfa/fxfa/parser/xfa_parser_imp.h"
 
+#include <memory>
+
 #include "xfa/fde/xml/fde_xml_imp.h"
 #include "xfa/fgas/crt/fgas_codepage.h"
 #include "xfa/fxfa/fm2js/xfa_fm2jsapi.h"
@@ -565,24 +567,21 @@ CXFA_Node* CXFA_SimpleParser::ParseAsXDPPacket_TemplateForm(
           m_pXMLParser->m_dwCheckStatus != 0x03) {
         return NULL;
       }
-      CXFA_ChecksumContext* pChecksum = new CXFA_ChecksumContext;
+      std::unique_ptr<CXFA_ChecksumContext> pChecksum(new CXFA_ChecksumContext);
       pChecksum->StartChecksum();
       pChecksum->UpdateChecksum(m_pFileRead, m_pXMLParser->m_nStart[0],
                                 m_pXMLParser->m_nSize[0]);
       pChecksum->UpdateChecksum(m_pFileRead, m_pXMLParser->m_nStart[1],
                                 m_pXMLParser->m_nSize[1]);
       pChecksum->FinishChecksum();
-      CFX_ByteString bsCheck;
-      pChecksum->GetChecksum(bsCheck);
-      pChecksum->Release();
-      if (bsCheck != wsChecksum.UTF8Encode()) {
-        return NULL;
-      }
+      CFX_ByteString bsCheck = pChecksum->GetChecksum();
+      if (bsCheck != wsChecksum.UTF8Encode())
+        return nullptr;
 
       pNode = m_pFactory->CreateNode(XFA_XDPPACKET_Form, XFA_ELEMENT_Form);
-      if (!pNode) {
-        return NULL;
-      }
+      if (!pNode)
+        return nullptr;
+
       pNode->SetCData(XFA_ATTRIBUTE_Name,
                       XFA_GetPacketByIndex(XFA_PACKET_Form)->pName);
       pNode->SetAttribute(XFA_ATTRIBUTE_Checksum, wsChecksum.AsStringC());