Remove implicit cast from CFX_ByteString to (const char*).

xfa/fxbarcode/oned/BC_OnedEAN8Writer.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 2009 ZXing authors
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
@@ skipping 58 matching lines @@
     }
   }
   return filtercontents;
 }
 int32_t CBC_OnedEAN8Writer::CalcChecksum(const CFX_ByteString& contents) {
   int32_t odd = 0;
   int32_t even = 0;
   int32_t j = 1;
   for (int32_t i = contents.GetLength() - 1; i >= 0; i--) {
     if (j % 2) {
-      odd += FXSYS_atoi(contents.Mid(i, 1));
+      odd += FXSYS_atoi(contents.Mid(i, 1).c_str());
     } else {
-      even += FXSYS_atoi(contents.Mid(i, 1));
+      even += FXSYS_atoi(contents.Mid(i, 1).c_str());
     }
     j++;
   }
   int32_t checksum = (odd * 3 + even) % 10;
   checksum = (10 - checksum) % 10;
   return (checksum);
 }
 uint8_t* CBC_OnedEAN8Writer::Encode(const CFX_ByteString& contents,
                                     BCFORMAT format,
                                     int32_t& outWidth,
@@ skipping 29 matching lines @@
   uint8_t* result = FX_Alloc(uint8_t, m_codeWidth);
   int32_t pos = 0;
   pos +=
       AppendPattern(result, pos, CBC_OneDimReader::START_END_PATTERN, 3, 1, e);
   if (e != BCExceptionNO) {
     FX_Free(result);
     return NULL;
   }
   int32_t i = 0;
   for (i = 0; i <= 3; i++) {
-    int32_t digit = FXSYS_atoi(contents.Mid(i, 1));
+    int32_t digit = FXSYS_atoi(contents.Mid(i, 1).c_str());
     pos += AppendPattern(result, pos, CBC_OneDimReader::L_PATTERNS[digit], 4, 0,
                          e);
     if (e != BCExceptionNO) {
       FX_Free(result);
       return NULL;
     }
   }
   pos += AppendPattern(result, pos, CBC_OneDimReader::MIDDLE_PATTERN, 5, 0, e);
   if (e != BCExceptionNO) {
     FX_Free(result);
     return NULL;
   }
   for (i = 4; i <= 7; i++) {
-    int32_t digit = FXSYS_atoi(contents.Mid(i, 1));
+    int32_t digit = FXSYS_atoi(contents.Mid(i, 1).c_str());
     pos += AppendPattern(result, pos, CBC_OneDimReader::L_PATTERNS[digit], 4, 1,
                          e);
     if (e != BCExceptionNO) {
       FX_Free(result);
       return NULL;
     }
   }
   pos +=
       AppendPattern(result, pos, CBC_OneDimReader::START_END_PATTERN, 3, 1, e);
   if (e != BCExceptionNO) {
@@ skipping 103 matching lines @@
   }
   FX_Free(pCharPos);
 }
 void CBC_OnedEAN8Writer::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);
 }