Change more fxbarcode to use return values.

Change-Id: Idcc05fb8c5a1448f552b4db5ae131ad82aef4d59
Reviewed-on: https://pdfium-review.googlesource.com/4258
Reviewed-by: Tom Sepez <tsepez@chromium.org>
Commit-Queue: Lei Zhang <thestig@chromium.org>

1 files changed, 21 insertions, 27 deletions

diff --git a/fxbarcode/cbc_ean13.cpp b/fxbarcode/cbc_ean13.cpp
index 0ac7fdbe6e..73638b951f 100644
--- a/fxbarcode/cbc_ean13.cpp
+++ b/fxbarcode/cbc_ean13.cpp
@@ -21,6 +21,8 @@
 
 #include "fxbarcode/cbc_ean13.h"
 
+#include <memory>
+
 #include "fxbarcode/oned/BC_OnedEAN13Writer.h"
 
 CBC_EAN13::CBC_EAN13() : CBC_OneCode(new CBC_OnedEAN13Writer) {}
@@ -28,17 +30,15 @@ CBC_EAN13::CBC_EAN13() : CBC_OneCode(new CBC_OnedEAN13Writer) {}
 CBC_EAN13::~CBC_EAN13() {}
 
 CFX_WideString CBC_EAN13::Preprocess(const CFX_WideStringC& contents) {
-  CFX_WideString encodeContents =
-      static_cast<CBC_OnedEAN13Writer*>(m_pBCWriter.get())
-          ->FilterContents(contents);
+  auto* pWriter = GetOnedEAN13Writer();
+  CFX_WideString encodeContents = pWriter->FilterContents(contents);
   int32_t length = encodeContents.GetLength();
   if (length <= 12) {
     for (int32_t i = 0; i < 12 - length; i++)
       encodeContents = wchar_t('0') + encodeContents;
 
     CFX_ByteString byteString = encodeContents.UTF8Encode();
-    int32_t checksum = static_cast<CBC_OnedEAN13Writer*>(m_pBCWriter.get())
-                           ->CalcChecksum(byteString);
+    int32_t checksum = pWriter->CalcChecksum(byteString);
     byteString += checksum - 0 + '0';
     encodeContents = byteString.UTF8Decode();
   }
@@ -48,41 +48,35 @@ CFX_WideString CBC_EAN13::Preprocess(const CFX_WideStringC& contents) {
   return encodeContents;
 }
 
-bool CBC_EAN13::Encode(const CFX_WideStringC& contents,
-                       bool isDevice,
-                       int32_t& e) {
-  if (contents.IsEmpty()) {
-    e = BCExceptionNoContents;
+bool CBC_EAN13::Encode(const CFX_WideStringC& contents, bool isDevice) {
+  if (contents.IsEmpty())
     return false;
-  }
+
   BCFORMAT format = BCFORMAT_EAN_13;
   int32_t outWidth = 0;
   int32_t outHeight = 0;
   CFX_WideString encodeContents = Preprocess(contents);
   CFX_ByteString byteString = encodeContents.UTF8Encode();
   m_renderContents = encodeContents;
-  uint8_t* data = static_cast<CBC_OnedEAN13Writer*>(m_pBCWriter.get())
-                      ->Encode(byteString, format, outWidth, outHeight, e);
-  if (e != BCExceptionNO)
-    return false;
-  static_cast<CBC_OneDimWriter*>(m_pBCWriter.get())
-      ->RenderResult(encodeContents.AsStringC(), data, outWidth, isDevice, e);
-  FX_Free(data);
-  if (e != BCExceptionNO)
+  auto* pWriter = GetOnedEAN13Writer();
+  std::unique_ptr<uint8_t, FxFreeDeleter> data(
+      pWriter->Encode(byteString, format, outWidth, outHeight));
+  if (!data)
     return false;
-  return true;
+  return pWriter->RenderResult(encodeContents.AsStringC(), data.get(), outWidth,
+                               isDevice);
 }
 
 bool CBC_EAN13::RenderDevice(CFX_RenderDevice* device,
-                             const CFX_Matrix* matrix,
-                             int32_t& e) {
-  static_cast<CBC_OneDimWriter*>(m_pBCWriter.get())
-      ->RenderDeviceResult(device, matrix, m_renderContents.AsStringC(), e);
-  if (e != BCExceptionNO)
-    return false;
-  return true;
+                             const CFX_Matrix* matrix) {
+  return GetOnedEAN13Writer()->RenderDeviceResult(device, matrix,
+                                                  m_renderContents.AsStringC());
 }
 
 BC_TYPE CBC_EAN13::GetType() {
   return BC_EAN13;
 }
+
+CBC_OnedEAN13Writer* CBC_EAN13::GetOnedEAN13Writer() {
+  return static_cast<CBC_OnedEAN13Writer*>(m_pBCWriter.get());
+}