Get rid of NULLs in core/

core/fpdftext/fpdf_text_int.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 <algorithm>
 #include <cctype>
 #include <cwctype>
 #include <memory>
@@ skipping 159 matching lines @@
       return charInfo.m_Flag != FPDFTEXT_CHAR_HYPHEN;
     default:
       return false;
   }
 }
 
 void CPDF_TextPage::ParseTextPage() {
   m_bIsParsed = false;
   m_TextBuf.Clear();
   m_CharList.clear();
-  m_pPreTextObj = NULL;
+  m_pPreTextObj = nullptr;
   ProcessObject();
 
   m_bIsParsed = true;
   m_CharIndex.clear();
   int nCount = pdfium::CollectionSize<int>(m_CharList);
   if (nCount) {
     m_CharIndex.push_back(0);
   }
   for (int i = 0; i < nCount; i++) {
     int indexSize = pdfium::CollectionSize<int>(m_CharIndex);
@@ skipping 638 matching lines @@
     return w;
 
   return pFont->GetCharBBox(charCode).Width();
 }
 
 void CPDF_TextPage::AddCharInfoByLRDirection(FX_WCHAR wChar,
                                              PAGECHAR_INFO info) {
   if (!IsControlChar(info)) {
     info.m_Index = m_TextBuf.GetLength();
     if (wChar >= 0xFB00 && wChar <= 0xFB06) {
-      FX_WCHAR* pDst = NULL;
+      FX_WCHAR* pDst = nullptr;
       FX_STRSIZE nCount = Unicode_GetNormalization(wChar, pDst);
       if (nCount >= 1) {
         pDst = FX_Alloc(FX_WCHAR, nCount);
         Unicode_GetNormalization(wChar, pDst);
         for (int nIndex = 0; nIndex < nCount; nIndex++) {
           PAGECHAR_INFO info2 = info;
           info2.m_Unicode = pDst[nIndex];
           info2.m_Flag = FPDFTEXT_CHAR_PIECE;
           m_TextBuf.AppendChar(info2.m_Unicode);
           m_CharList.push_back(info2);
         }
         FX_Free(pDst);
         return;
       }
     }
     m_TextBuf.AppendChar(wChar);
   } else {
     info.m_Index = -1;
   }
   m_CharList.push_back(info);
 }
 
 void CPDF_TextPage::AddCharInfoByRLDirection(FX_WCHAR wChar,
                                              PAGECHAR_INFO info) {
   if (!IsControlChar(info)) {
     info.m_Index = m_TextBuf.GetLength();
     wChar = FX_GetMirrorChar(wChar, TRUE, FALSE);
-    FX_WCHAR* pDst = NULL;
+    FX_WCHAR* pDst = nullptr;
     FX_STRSIZE nCount = Unicode_GetNormalization(wChar, pDst);
     if (nCount >= 1) {
       pDst = FX_Alloc(FX_WCHAR, nCount);
       Unicode_GetNormalization(wChar, pDst);
       for (int nIndex = 0; nIndex < nCount; nIndex++) {
         PAGECHAR_INFO info2 = info;
         info2.m_Unicode = pDst[nIndex];
         info2.m_Flag = FPDFTEXT_CHAR_PIECE;
         m_TextBuf.AppendChar(info2.m_Unicode);
         m_CharList.push_back(info2);
@@ skipping 137 matching lines @@
       (CPDF_ContentMarkData*)pTextObj->m_ContentMark.GetObject();
   if (!pMarkData)
     return FPDFText_MarkedContent::Pass;
 
   int nContentMark = pMarkData->CountItems();
   if (nContentMark < 1)
     return FPDFText_MarkedContent::Pass;
 
   CFX_WideString actText;
   FX_BOOL bExist = FALSE;
-  CPDF_Dictionary* pDict = NULL;
+  CPDF_Dictionary* pDict = nullptr;
   int n = 0;
   for (n = 0; n < nContentMark; n++) {
     CPDF_ContentMarkItem& item = pMarkData->GetItem(n);
     if (item.GetParamType() == CPDF_ContentMarkItem::ParamType::None)
       continue;
     pDict = item.GetParam();
     CPDF_String* temp =
         ToString(pDict ? pDict->GetObjectBy("ActualText") : nullptr);
     if (temp) {
       bExist = TRUE;
@@ skipping 45 matching lines @@
   CPDF_TextObject* pTextObj = Obj.m_pTextObj;
   CPDF_ContentMarkData* pMarkData =
       (CPDF_ContentMarkData*)pTextObj->m_ContentMark.GetObject();
   if (!pMarkData)
     return;
 
   int nContentMark = pMarkData->CountItems();
   if (nContentMark < 1)
     return;
   CFX_WideString actText;
-  CPDF_Dictionary* pDict = NULL;
+  CPDF_Dictionary* pDict = nullptr;
   for (int n = 0; n < nContentMark; n++) {
     CPDF_ContentMarkItem& item = pMarkData->GetItem(n);
     if (item.GetParamType() == CPDF_ContentMarkItem::ParamType::None)
       continue;
     pDict = item.GetParam();
     if (pDict)
       actText = pDict->GetUnicodeTextBy("ActualText");
   }
   FX_STRSIZE nItems = actText.GetLength();
   if (nItems < 1)
@@ skipping 654 matching lines @@
   const PAGECHAR_INFO* preChar;
   if (!m_TempCharList.empty()) {
     preChar = &m_TempCharList.back();
   } else if (!m_CharList.empty()) {
     preChar = &m_CharList.back();
   } else {
     return FALSE;
   }
   info.m_Index = m_TextBuf.GetLength();
   info.m_Unicode = unicode;
-  info.m_pTextObj = NULL;
+  info.m_pTextObj = nullptr;
   info.m_CharCode = CPDF_Font::kInvalidCharCode;
   info.m_Flag = FPDFTEXT_CHAR_GENERATED;
   int preWidth = 0;
   if (preChar->m_pTextObj && preChar->m_CharCode != -1) {
     preWidth =
         GetCharWidth(preChar->m_CharCode, preChar->m_pTextObj->GetFont());
   }
 
   FX_FLOAT fFontSize = preChar->m_pTextObj ? preChar->m_pTextObj->GetFontSize()
                                            : preChar->m_CharBox.Height();
@@ skipping 564 matching lines @@
   return index < m_LinkArray.size() ? m_LinkArray[index].m_strUrl : L"";
 }
 
 std::vector<CFX_FloatRect> CPDF_LinkExtract::GetRects(size_t index) const {
   if (index >= m_LinkArray.size())
     return std::vector<CFX_FloatRect>();
 
   return m_pTextPage->GetRectArray(m_LinkArray[index].m_Start,
                                    m_LinkArray[index].m_Count);
 }