Get rid of NULLs in xfa/fxbarcode/

xfa/fxbarcode/qrcode/BC_QRDecodedBitStreamParser.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 2007 ZXing authors
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
@@ skipping 26 matching lines @@
 CBC_QRDecodedBitStreamParser::CBC_QRDecodedBitStreamParser() {}
 CBC_QRDecodedBitStreamParser::~CBC_QRDecodedBitStreamParser() {}
 CBC_CommonDecoderResult* CBC_QRDecodedBitStreamParser::Decode(
     CFX_ByteArray* bytes,
     CBC_QRCoderVersion* version,
     CBC_QRCoderErrorCorrectionLevel* ecLevel,
     int32_t byteModeDecode,
     int32_t& e) {
   CBC_CommonBitSource bits(bytes);
   CFX_ByteString result;
-  CBC_CommonCharacterSetECI* currentCharacterSetECI = NULL;
+  CBC_CommonCharacterSetECI* currentCharacterSetECI = nullptr;
   FX_BOOL fc1Infact = FALSE;
   CFX_Int32Array byteSegments;
-  CBC_QRCoderMode* mode = NULL;
+  CBC_QRCoderMode* mode = nullptr;
   do {
     if (bits.Available() < 4) {
       mode = CBC_QRCoderMode::sTERMINATOR;
     } else {
       int32_t iTemp1 = bits.ReadBits(4, e);
-      BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
+      BC_EXCEPTION_CHECK_ReturnValue(e, nullptr);
       mode = CBC_QRCoderMode::ForBits(iTemp1, e);
-      BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
-      if (mode == NULL) {
+      BC_EXCEPTION_CHECK_ReturnValue(e, nullptr);
+      if (!mode) {
         e = BCExceptionUnSupportMode;
-        BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
+        BC_EXCEPTION_CHECK_ReturnValue(e, nullptr);
       }
     }
     if (!(mode == CBC_QRCoderMode::sTERMINATOR)) {
       if (mode == CBC_QRCoderMode::sFNC1_FIRST_POSITION ||
           mode == CBC_QRCoderMode::sFNC1_SECOND_POSITION) {
         fc1Infact = TRUE;
       } else if (mode == CBC_QRCoderMode::sSTRUCTURED_APPEND) {
         bits.ReadBits(16, e);
-        BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
+        BC_EXCEPTION_CHECK_ReturnValue(e, nullptr);
       } else if (mode == CBC_QRCoderMode::sECI) {
         int32_t value = ParseECIValue(&bits, e);
-        BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
+        BC_EXCEPTION_CHECK_ReturnValue(e, nullptr);
         currentCharacterSetECI =
             CBC_CommonCharacterSetECI::GetCharacterSetECIByValue(value);
       } else {
         if (mode == CBC_QRCoderMode::sGBK) {
           bits.ReadBits(4, e);
-          BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
+          BC_EXCEPTION_CHECK_ReturnValue(e, nullptr);
         }
         int32_t numBits = mode->GetCharacterCountBits(version, e);
-        BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
+        BC_EXCEPTION_CHECK_ReturnValue(e, nullptr);
         int32_t count = bits.ReadBits(numBits, e);
-        BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
+        BC_EXCEPTION_CHECK_ReturnValue(e, nullptr);
         if (mode == CBC_QRCoderMode::sNUMERIC) {
           DecodeNumericSegment(&bits, result, count, e);
-          BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
+          BC_EXCEPTION_CHECK_ReturnValue(e, nullptr);
         } else if (mode == CBC_QRCoderMode::sALPHANUMERIC) {
           DecodeAlphanumericSegment(&bits, result, count, fc1Infact, e);
-          BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
+          BC_EXCEPTION_CHECK_ReturnValue(e, nullptr);
         } else if (mode == CBC_QRCoderMode::sBYTE) {
           DecodeByteSegment(&bits, result, count, currentCharacterSetECI,
                             &byteSegments, byteModeDecode, e);
-          BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
+          BC_EXCEPTION_CHECK_ReturnValue(e, nullptr);
         } else if (mode == CBC_QRCoderMode::sGBK) {
           DecodeGBKSegment(&bits, result, count, e);
-          BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
+          BC_EXCEPTION_CHECK_ReturnValue(e, nullptr);
         } else if (mode == CBC_QRCoderMode::sKANJI) {
           DecodeKanjiSegment(&bits, result, count, e);
-          BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
+          BC_EXCEPTION_CHECK_ReturnValue(e, nullptr);
         } else {
           e = BCExceptionUnSupportMode;
-          BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
+          BC_EXCEPTION_CHECK_ReturnValue(e, nullptr);
         }
       }
     }
   } while (!(mode == CBC_QRCoderMode::sTERMINATOR));
   CBC_CommonDecoderResult* tempCd = new CBC_CommonDecoderResult();
   tempCd->Init(*bytes, result, byteSegments, ecLevel, e);
-  BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
+  BC_EXCEPTION_CHECK_ReturnValue(e, nullptr);
   return tempCd;
 }
 void CBC_QRDecodedBitStreamParser::DecodeGBKSegment(CBC_CommonBitSource* bits,
                                                     CFX_ByteString& result,
                                                     int32_t count,
                                                     int32_t& e) {
   CFX_ByteString buffer;
   while (count > 0) {
     int32_t twoBytes = bits->ReadBits(13, e);
     BC_EXCEPTION_CHECK_ReturnVoid(e);
@@ skipping 143 matching lines @@
     return ((firstByte & 0x3f) << 8) | secondByte;
   } else if ((firstByte & 0xe0) == 0xc0) {
     int32_t secondThirdByte = bits->ReadBits(16, e);
     BC_EXCEPTION_CHECK_ReturnValue(e, 0);
     return ((firstByte & 0x1f) << 16) | secondThirdByte;
   }
   e = BCExceptionBadECI;
   BC_EXCEPTION_CHECK_ReturnValue(e, 0);
   return 0;
 }