Make down-conversion explicit from CFX_ByteString to CFX_ByteStringC.

core/fpdfdoc/cpvt_generateap.cpp

 // Copyright 2016 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 "core/fpdfdoc/cpvt_generateap.h"
 
 #include "core/fpdfapi/fpdf_font/include/cpdf_font.h"
 #include "core/fpdfapi/fpdf_parser/include/cpdf_dictionary.h"
@@ skipping 18 matching lines @@
     return FALSE;
 
   CFX_ByteString DA;
   if (CPDF_Object* pDAObj = FPDF_GetFieldAttr(pAnnotDict, "DA"))
     DA = pDAObj->GetString();
   if (DA.IsEmpty())
     DA = pFormDict->GetStringBy("DA");
   if (DA.IsEmpty())
     return FALSE;
 
-  CPDF_SimpleParser syntax(DA);
+  CPDF_SimpleParser syntax(DA.AsByteStringC());
   syntax.FindTagParamFromStart("Tf", 2);
   CFX_ByteString sFontName = syntax.GetWord();
   sFontName = PDF_NameDecode(sFontName);
   if (sFontName.IsEmpty())
     return FALSE;
 
   FX_FLOAT fFontSize = FX_atof(syntax.GetWord());
   CPVT_Color crText = CPVT_Color::ParseColor(DA);
   FX_BOOL bUseFormRes = FALSE;
   CPDF_Dictionary* pFontDict = nullptr;
   CPDF_Dictionary* pDRDict = pAnnotDict->GetDictBy("DR");
   if (!pDRDict) {
     pDRDict = pFormDict->GetDictBy("DR");
     bUseFormRes = TRUE;
   }
   CPDF_Dictionary* pDRFontDict = pDRDict ? pDRDict->GetDictBy("Font") : nullptr;
   if (pDRFontDict) {
-    pFontDict = pDRFontDict->GetDictBy(sFontName.Mid(1));
+    pFontDict = pDRFontDict->GetDictBy(sFontName.Mid(1).AsByteStringC());
     if (!pFontDict && !bUseFormRes) {
       pDRDict = pFormDict->GetDictBy("DR");
       pDRFontDict = pDRDict->GetDictBy("Font");
       if (pDRFontDict)
-        pFontDict = pDRFontDict->GetDictBy(sFontName.Mid(1));
+        pFontDict = pDRFontDict->GetDictBy(sFontName.Mid(1).AsByteStringC());
     }
   }
   if (!pDRFontDict)
     return FALSE;
 
   if (!pFontDict) {
     pFontDict = new CPDF_Dictionary;
     pFontDict->SetAtName("Type", "Font");
     pFontDict->SetAtName("Subtype", "Type1");
     pFontDict->SetAtName("BaseFont", "Helvetica");
     pFontDict->SetAtName("Encoding", "WinAnsiEncoding");
     pDoc->AddIndirectObject(pFontDict);
-    pDRFontDict->SetAtReference(sFontName.Mid(1), pDoc, pFontDict);
+    pDRFontDict->SetAtReference(sFontName.Mid(1).AsByteStringC(), pDoc,
+                                pFontDict);
   }
   CPDF_Font* pDefFont = pDoc->LoadFont(pFontDict);
   if (!pDefFont)
     return FALSE;
 
   CFX_FloatRect rcAnnot = pAnnotDict->GetRectBy("Rect");
   int32_t nRotate = 0;
   if (CPDF_Dictionary* pMKDict = pAnnotDict->GetDictBy("MK"))
     nRotate = pMKDict->GetIntegerBy("R");
 
@@ skipping 96 matching lines @@
   if (pStreamDict) {
     pStreamDict->SetAtMatrix("Matrix", matrix);
     pStreamDict->SetAtRect("BBox", rcBBox);
     CPDF_Dictionary* pStreamResList = pStreamDict->GetDictBy("Resources");
     if (pStreamResList) {
       CPDF_Dictionary* pStreamResFontList = pStreamResList->GetDictBy("Font");
       if (!pStreamResFontList) {
         pStreamResFontList = new CPDF_Dictionary;
         pStreamResList->SetAt("Font", pStreamResFontList);
       }
-      if (!pStreamResFontList->KeyExist(sFontName))
-        pStreamResFontList->SetAtReference(sFontName, pDoc, pFontDict);
+      if (!pStreamResFontList->KeyExist(sFontName.AsByteStringC()))
+        pStreamResFontList->SetAtReference(sFontName.AsByteStringC(), pDoc,
+                                           pFontDict);
     } else {
       pStreamDict->SetAt("Resources", pFormDict->GetDictBy("DR")->Clone());
       pStreamResList = pStreamDict->GetDictBy("Resources");
     }
   }
   switch (nWidgetType) {
     case 0: {
       CFX_WideString swValue =
           FPDF_GetFieldAttr(pAnnotDict, "V")
               ? FPDF_GetFieldAttr(pAnnotDict, "V")->GetUnicodeText()
@@ skipping 224 matching lines @@
     if (pStreamDict) {
       pStreamDict->SetAtMatrix("Matrix", matrix);
       pStreamDict->SetAtRect("BBox", rcBBox);
       CPDF_Dictionary* pStreamResList = pStreamDict->GetDictBy("Resources");
       if (pStreamResList) {
         CPDF_Dictionary* pStreamResFontList = pStreamResList->GetDictBy("Font");
         if (!pStreamResFontList) {
           pStreamResFontList = new CPDF_Dictionary;
           pStreamResList->SetAt("Font", pStreamResFontList);
         }
-        if (!pStreamResFontList->KeyExist(sFontName))
-          pStreamResFontList->SetAtReference(sFontName, pDoc, pFontDict);
+        if (!pStreamResFontList->KeyExist(sFontName.AsByteStringC()))
+          pStreamResFontList->SetAtReference(sFontName.AsByteStringC(), pDoc,
+                                             pFontDict);
       } else {
         pStreamDict->SetAt("Resources", pFormDict->GetDictBy("DR")->Clone());
         pStreamResList = pStreamDict->GetDictBy("Resources");
       }
     }
   }
   return TRUE;
 }
 
 }  // namespace
@@ skipping 310 matching lines @@
                                                  int32_t nFontIndex,
                                                  FX_FLOAT fFontSize) {
   CFX_ByteTextBuf sRet;
   if (pFontMap) {
     CFX_ByteString sFontAlias = pFontMap->GetPDFFontAlias(nFontIndex);
     if (sFontAlias.GetLength() > 0 && fFontSize > 0)
       sRet << "/" << sFontAlias << " " << fFontSize << " Tf\n";
   }
   return sRet.GetByteString();
 }