Get rid of NULLs in core/

core/fxcrt/fxcrt_windows.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/fxcrt/fxcrt_windows.h"
 
 #include "core/fxcrt/include/fx_string.h"
 
@@ skipping 21 matching lines @@
 extern "C" {
 #endif
 WINBASEAPI BOOL WINAPI GetFileSizeEx(HANDLE hFile, PLARGE_INTEGER lpFileSize);
 WINBASEAPI BOOL WINAPI SetFilePointerEx(HANDLE hFile,
                                         LARGE_INTEGER liDistanceToMove,
                                         PLARGE_INTEGER lpNewFilePointer,
                                         DWORD dwMoveMethod);
 #ifdef __cplusplus
 }
 #endif
-CFXCRT_FileAccess_Win64::CFXCRT_FileAccess_Win64() : m_hFile(NULL) {}
+CFXCRT_FileAccess_Win64::CFXCRT_FileAccess_Win64() : m_hFile(nullptr) {}
 CFXCRT_FileAccess_Win64::~CFXCRT_FileAccess_Win64() {
   Close();
 }
 FX_BOOL CFXCRT_FileAccess_Win64::Open(const CFX_ByteStringC& fileName,
                                       uint32_t dwMode) {
   if (m_hFile) {
     return FALSE;
   }
   uint32_t dwAccess, dwShare, dwCreation;
   FXCRT_Windows_GetFileMode(dwMode, dwAccess, dwShare, dwCreation);
-  m_hFile = ::CreateFileA(fileName.c_str(), dwAccess, dwShare, NULL, dwCreation,
-                          FILE_ATTRIBUTE_NORMAL, NULL);
-  if (m_hFile == INVALID_HANDLE_VALUE) {
-    m_hFile = NULL;
-  }
-  return m_hFile != NULL;
+  m_hFile = ::CreateFileA(fileName.c_str(), dwAccess, dwShare, nullptr,
+                          dwCreation, FILE_ATTRIBUTE_NORMAL, nullptr);
+  if (m_hFile == INVALID_HANDLE_VALUE)
+    m_hFile = nullptr;
+  return !!m_hFile;
 }
 FX_BOOL CFXCRT_FileAccess_Win64::Open(const CFX_WideStringC& fileName,
                                       uint32_t dwMode) {
   if (m_hFile) {
     return FALSE;
   }
   uint32_t dwAccess, dwShare, dwCreation;
   FXCRT_Windows_GetFileMode(dwMode, dwAccess, dwShare, dwCreation);
-  m_hFile = ::CreateFileW((LPCWSTR)fileName.c_str(), dwAccess, dwShare, NULL,
-                          dwCreation, FILE_ATTRIBUTE_NORMAL, NULL);
-  if (m_hFile == INVALID_HANDLE_VALUE) {
-    m_hFile = NULL;
-  }
-  return m_hFile != NULL;
+  m_hFile = ::CreateFileW((LPCWSTR)fileName.c_str(), dwAccess, dwShare, nullptr,
+                          dwCreation, FILE_ATTRIBUTE_NORMAL, nullptr);
+  if (m_hFile == INVALID_HANDLE_VALUE)
+    m_hFile = nullptr;
+  return !!m_hFile;
 }
 void CFXCRT_FileAccess_Win64::Close() {
   if (!m_hFile) {
     return;
   }
   ::CloseHandle(m_hFile);
-  m_hFile = NULL;
+  m_hFile = nullptr;
 }
 FX_FILESIZE CFXCRT_FileAccess_Win64::GetSize() const {
   if (!m_hFile) {
     return 0;
   }
   LARGE_INTEGER size = {};
   if (!::GetFileSizeEx(m_hFile, &size)) {
     return 0;
   }
   return (FX_FILESIZE)size.QuadPart;
@@ skipping 19 matching lines @@
   if (!::SetFilePointerEx(m_hFile, dist, &newPos, FILE_BEGIN)) {
     return (FX_FILESIZE)-1;
   }
   return (FX_FILESIZE)newPos.QuadPart;
 }
 size_t CFXCRT_FileAccess_Win64::Read(void* pBuffer, size_t szBuffer) {
   if (!m_hFile) {
     return 0;
   }
   size_t szRead = 0;
-  if (!::ReadFile(m_hFile, pBuffer, (DWORD)szBuffer, (LPDWORD)&szRead, NULL)) {
+  if (!::ReadFile(m_hFile, pBuffer, (DWORD)szBuffer, (LPDWORD)&szRead,
+                  nullptr)) {
     return 0;
   }
   return szRead;
 }
 size_t CFXCRT_FileAccess_Win64::Write(const void* pBuffer, size_t szBuffer) {
   if (!m_hFile) {
     return 0;
   }
   size_t szWrite = 0;
   if (!::WriteFile(m_hFile, pBuffer, (DWORD)szBuffer, (LPDWORD)&szWrite,
-                   NULL)) {
+                   nullptr)) {
     return 0;
   }
   return szWrite;
 }
 size_t CFXCRT_FileAccess_Win64::ReadPos(void* pBuffer,
                                         size_t szBuffer,
                                         FX_FILESIZE pos) {
   if (!m_hFile) {
     return 0;
   }
@@ skipping 22 matching lines @@
   }
   return ::FlushFileBuffers(m_hFile);
 }
 FX_BOOL CFXCRT_FileAccess_Win64::Truncate(FX_FILESIZE szFile) {
   if (SetPosition(szFile) == (FX_FILESIZE)-1) {
     return FALSE;
   }
   return ::SetEndOfFile(m_hFile);
 }
 #endif