Get rid of NULLs in core/

core/fpdfapi/fpdf_edit/fpdf_edit_create.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 "core/fpdfapi/fpdf_edit/editint.h"
 
 #include <vector>
 
@@ skipping 881 matching lines @@
       m_dwFlags(0),
       m_Pos(nullptr),
       m_XrefStart(0),
       m_pIDArray(nullptr),
       m_FileVersion(0) {}
 
 CPDF_Creator::~CPDF_Creator() {
   ResetStandardSecurity();
   if (m_bEncryptCloned && m_pEncryptDict) {
     m_pEncryptDict->Release();
-    m_pEncryptDict = NULL;
+    m_pEncryptDict = nullptr;
   }
   Clear();
 }
 
 int32_t CPDF_Creator::WriteIndirectObjectToStream(const CPDF_Object* pObj) {
   if (!m_pXRefStream)
     return 1;
 
   uint32_t objnum = pObj->GetObjNum();
   if (m_pParser && m_pParser->GetObjectGenNum(objnum) > 0)
@@ skipping 521 matching lines @@
 int32_t CPDF_Creator::WriteDoc_Stage1(IFX_Pause* pPause) {
   ASSERT(m_iStage > -1 || m_iStage < 20);
   if (m_iStage == 0) {
     if (!m_pParser) {
       m_dwFlags &= ~FPDFCREATE_INCREMENTAL;
     }
     if (m_bSecurityChanged && (m_dwFlags & FPDFCREATE_NO_ORIGINAL) == 0) {
       m_dwFlags &= ~FPDFCREATE_INCREMENTAL;
     }
     CPDF_Dictionary* pDict = m_pDocument->GetRoot();
-    m_pMetadata = pDict ? pDict->GetDirectObjectBy("Metadata") : NULL;
+    m_pMetadata = pDict ? pDict->GetDirectObjectBy("Metadata") : nullptr;
     if (m_dwFlags & FPDFCREATE_OBJECTSTREAM) {
       m_pXRefStream.reset(new CPDF_XRefStream);
       m_pXRefStream->Start();
       if ((m_dwFlags & FPDFCREATE_INCREMENTAL) != 0 && m_pParser) {
         FX_FILESIZE prev = m_pParser->GetLastXRefOffset();
         m_pXRefStream->m_PrevOffset = prev;
       }
     }
     m_iStage = 10;
   }
@@ skipping 94 matching lines @@
   }
   if (m_iStage == 26) {
     int32_t iRet =
         WriteNewObjs((m_dwFlags & FPDFCREATE_INCREMENTAL) != 0, pPause);
     if (iRet) {
       return iRet;
     }
     m_iStage = 27;
   }
   if (m_iStage == 27) {
-    if (NULL != m_pEncryptDict && 0 == m_pEncryptDict->GetObjNum()) {
+    if (m_pEncryptDict && 0 == m_pEncryptDict->GetObjNum()) {
       m_dwLastObjNum += 1;
       FX_FILESIZE saveOffset = m_Offset;
       if (WriteIndirectObj(m_dwLastObjNum, m_pEncryptDict) < 0) {
         return -1;
       }
       m_ObjectOffset.Add(m_dwLastObjNum, 1);
       m_ObjectOffset[m_dwLastObjNum] = saveOffset;
       m_dwEncryptObjNum = m_dwLastObjNum;
       if (m_dwFlags & FPDFCREATE_INCREMENTAL) {
         m_NewObjNumArray.Add(m_dwLastObjNum);
@@ skipping 322 matching lines @@
   }
   m_File.Flush();
   return m_iStage = 100;
 }
 void CPDF_Creator::Clear() {
   m_pXRefStream.reset();
   m_File.Clear();
   m_NewObjNumArray.RemoveAll();
   if (m_pIDArray) {
     m_pIDArray->Release();
-    m_pIDArray = NULL;
+    m_pIDArray = nullptr;
   }
 }
 
 bool CPDF_Creator::Create(IFX_StreamWrite* pFile, uint32_t flags) {
   m_File.AttachFile(pFile);
   return Create(flags);
 }
 
 bool CPDF_Creator::Create(uint32_t flags) {
   m_dwFlags = flags;
   m_iStage = 0;
   m_Offset = 0;
   m_dwLastObjNum = m_pDocument->GetLastObjNum();
   m_ObjectOffset.Clear();
   m_NewObjNumArray.RemoveAll();
   InitID();
   if (flags & FPDFCREATE_PROGRESSIVE) {
     return true;
   }
-  return Continue(NULL) > -1;
+  return Continue(nullptr) > -1;
 }
 void CPDF_Creator::InitID(FX_BOOL bDefault) {
-  CPDF_Array* pOldIDArray = m_pParser ? m_pParser->GetIDArray() : NULL;
+  CPDF_Array* pOldIDArray = m_pParser ? m_pParser->GetIDArray() : nullptr;
   FX_BOOL bNewId = !m_pIDArray;
   if (!m_pIDArray) {
     m_pIDArray = new CPDF_Array;
-    CPDF_Object* pID1 = pOldIDArray ? pOldIDArray->GetObjectAt(0) : NULL;
+    CPDF_Object* pID1 = pOldIDArray ? pOldIDArray->GetObjectAt(0) : nullptr;
     if (pID1) {
       m_pIDArray->Add(pID1->Clone());
     } else {
       std::vector<uint8_t> buffer =
           PDF_GenerateFileID((uint32_t)(uintptr_t) this, m_dwLastObjNum);
       CFX_ByteString bsBuffer(buffer.data(), buffer.size());
       m_pIDArray->Add(new CPDF_String(bsBuffer, TRUE), m_pDocument);
     }
   }
   if (!bDefault) {
@@ skipping 69 matching lines @@
   m_pCryptoHandler = nullptr;
 }
 void CPDF_Creator::ResetStandardSecurity() {
   if (!m_bLocalCryptoHandler)
     return;
 
   delete m_pCryptoHandler;
   m_pCryptoHandler = nullptr;
   m_bLocalCryptoHandler = FALSE;
 }