Get rid of NULLs in xfa/fxbarcode/

xfa/fxbarcode/oned/BC_OnedUPCAWriter.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
 // Original code is licensed as follows:
 /*
  * Copyright 2010 ZXing authors
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
  *
  *      http://www.apache.org/licenses/LICENSE-2.0
  *
  * Unless required by applicable law or agreed to in writing, software
  * distributed under the License is distributed on an "AS IS" BASIS,
  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
 
 #include "xfa/fxbarcode/BC_Writer.h"
 #include "xfa/fxbarcode/oned/BC_OneDimWriter.h"
 #include "xfa/fxbarcode/oned/BC_OnedEAN13Writer.h"
 #include "xfa/fxbarcode/oned/BC_OnedUPCAWriter.h"
 
 CBC_OnedUPCAWriter::CBC_OnedUPCAWriter() {
-  m_subWriter = NULL;
+  m_subWriter = nullptr;
   m_bLeftPadding = TRUE;
   m_bRightPadding = TRUE;
 }
 void CBC_OnedUPCAWriter::Init() {
   m_subWriter = new CBC_OnedEAN13Writer;
 }
 CBC_OnedUPCAWriter::~CBC_OnedUPCAWriter() {
   delete m_subWriter;
 }
 
@@ skipping 37 matching lines @@
   int32_t checksum = (odd * 3 + even) % 10;
   checksum = (10 - checksum) % 10;
   return (checksum);
 }
 uint8_t* CBC_OnedUPCAWriter::Encode(const CFX_ByteString& contents,
                                     BCFORMAT format,
                                     int32_t& outWidth,
                                     int32_t& outHeight,
                                     int32_t& e) {
   uint8_t* ret = Encode(contents, format, outWidth, outHeight, 0, e);
-  BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
+  BC_EXCEPTION_CHECK_ReturnValue(e, nullptr);
   return ret;
 }
 uint8_t* CBC_OnedUPCAWriter::Encode(const CFX_ByteString& contents,
                                     BCFORMAT format,
                                     int32_t& outWidth,
                                     int32_t& outHeight,
                                     int32_t hints,
                                     int32_t& e) {
   if (format != BCFORMAT_UPC_A) {
     e = BCExceptionOnlyEncodeUPC_A;
-    return NULL;
+    return nullptr;
   }
   CFX_ByteString toEAN13String = '0' + contents;
   m_iDataLenth = 13;
   uint8_t* ret = m_subWriter->Encode(toEAN13String, BCFORMAT_EAN_13, outWidth,
                                      outHeight, hints, e);
-  BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
+  BC_EXCEPTION_CHECK_ReturnValue(e, nullptr);
   return ret;
 }
 
 void CBC_OnedUPCAWriter::ShowChars(const CFX_WideStringC& contents,
                                    CFX_DIBitmap* pOutBitmap,
                                    CFX_RenderDevice* device,
                                    const CFX_Matrix* matrix,
                                    int32_t barWidth,
                                    int32_t multiple,
                                    int32_t& e) {
@@ skipping 49 matching lines @@
     CFX_FloatRect rect3(
         (FX_FLOAT)(leftPosition + 85 * multiple),
         (FX_FLOAT)(m_Height - iTextHeight),
         (FX_FLOAT)((leftPosition + 85 * multiple) + strWidth1 - 0.5),
         (FX_FLOAT)m_Height);
     matr3.Concat(*matrix);
     matr3.TransformRect(rect3);
     re = rect3.GetOutterRect();
     device->FillRect(&re, m_backgroundColor);
   }
-  if (pOutBitmap == NULL) {
+  if (!pOutBitmap)
     strWidth = strWidth * m_outputHScale;
-  }
+
   CalcTextInfo(tempStr, pCharPos + 1, m_pFont, strWidth, iFontSize, blank);
   CFX_Matrix affine_matrix(1.0, 0.0, 0.0, -1.0, 0.0, (FX_FLOAT)iFontSize);
   CFX_FxgeDevice ge;
   if (pOutBitmap) {
     ge.Create((int)strWidth, iTextHeight, FXDIB_Argb, nullptr);
     ge.GetBitmap()->Clear(m_backgroundColor);
     ge.DrawNormalText(iLen, pCharPos + 1, m_pFont,
                       CFX_GEModule::Get()->GetFontCache(), (FX_FLOAT)iFontSize,
                       (CFX_Matrix*)&affine_matrix, m_fontColor,
                       FXTEXT_CLEARTYPE);
@@ skipping 31 matching lines @@
       affine_matrix1.Concat(*matrix);
     }
     device->DrawNormalText(iLen, pCharPos + 6, m_pFont,
                            CFX_GEModule::Get()->GetFontCache(),
                            (FX_FLOAT)iFontSize, (CFX_Matrix*)&affine_matrix1,
                            m_fontColor, FXTEXT_CLEARTYPE);
   }
   tempStr = str.Mid(0, 1);
   iLen = tempStr.GetLength();
   strWidth = (FX_FLOAT)multiple * 7;
-  if (pOutBitmap == NULL) {
+  if (!pOutBitmap)
     strWidth = strWidth * m_outputHScale;
-  }
+
   CalcTextInfo(tempStr, pCharPos, m_pFont, strWidth, iFontSize, blank);
   if (pOutBitmap) {
     delete ge.GetBitmap();
     ge.Create((int)strWidth, iTextHeight, FXDIB_Argb, nullptr);
     ge.GetBitmap()->Clear(m_backgroundColor);
     ge.DrawNormalText(iLen, pCharPos, m_pFont,
                       CFX_GEModule::Get()->GetFontCache(), (FX_FLOAT)iFontSize,
                       (CFX_Matrix*)&affine_matrix, m_fontColor,
                       FXTEXT_CLEARTYPE);
     geBitmap.SetDIBits(ge.GetBitmap(), 0, m_Height - iTextHeight);
@@ skipping 37 matching lines @@
   FX_Free(pCharPos);
 }
 
 void CBC_OnedUPCAWriter::RenderResult(const CFX_WideStringC& contents,
                                       uint8_t* code,
                                       int32_t codeLength,
                                       FX_BOOL isDevice,
                                       int32_t& e) {
   CBC_OneDimWriter::RenderResult(contents, code, codeLength, isDevice, e);
 }