Make CPDF_Object::GetString() a virtual method.

fpdfsdk/src/formfiller/FFL_CBA_Fontmap.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
 
 #include "../../include/formfiller/FormFiller.h"
 #include "../../include/formfiller/FFL_CBA_Fontmap.h"
 
 CBA_FontMap::CBA_FontMap(CPDFSDK_Annot* pAnnot, IFX_SystemHandler* pSystemHandler) :
@@ skipping 75 matching lines @@
         int32_t nCharset = DEFAULT_CHARSET;
         if (const CFX_SubstFont* pSubstFont = m_pDefaultFont->GetSubstFont())
                 nCharset = pSubstFont->m_Charset;
         AddFontData(m_pDefaultFont, m_sDefaultFontName, nCharset);
 }
 
 CPDF_Font* CBA_FontMap::FindFontSameCharset(CFX_ByteString& sFontAlias, int32_t nCharset)
 {
         ASSERT(m_pAnnotDict != NULL);
 
-        if (m_pAnnotDict->GetString("Subtype") == "Widget")
+        if (m_pAnnotDict->GetStringAt("Subtype") == "Widget")
         {
                 CPDF_Document* pDocument = GetDocument();
                 ASSERT(pDocument != NULL);
 
                 CPDF_Dictionary * pRootDict = pDocument->GetRoot();
                 if (!pRootDict) return NULL;
 
                 CPDF_Dictionary* pAcroFormDict = pRootDict->GetDict("AcroForm");
                 if (!pAcroFormDict) return NULL;
 
@@ skipping 29 matching lines @@
         {
                 CPDF_Object* pObj = NULL;
                 CFX_ByteString csKey;
                 pObj = pFonts->GetNextElement(pos, csKey);
                 if (pObj == NULL) continue;
 
                 CPDF_Object* pDirect = pObj->GetDirect();
                 if (pDirect == NULL || pDirect->GetType() != PDFOBJ_DICTIONARY) continue;
 
                 CPDF_Dictionary* pElement = (CPDF_Dictionary*)pDirect;
-                if (pElement->GetString("Type") != "Font") continue;
+                if (pElement->GetStringAt("Type") != "Font")
+                    continue;
 
                 CPDF_Font* pFont = pDocument->LoadFont(pElement);
                 if (pFont == NULL) continue;
                 const CFX_SubstFont* pSubst = pFont->GetSubstFont();
                 if (pSubst == NULL) continue;
                 if (pSubst->m_Charset == nCharset)
                 {
                         sFontAlias = csKey;
                         pFind = pFont;
                 }
@@ skipping 66 matching lines @@
         }
 }
 
 CPDF_Font* CBA_FontMap::GetAnnotDefaultFont(CFX_ByteString &sAlias)
 {
         ASSERT(m_pAnnotDict != NULL);
         ASSERT(m_pDocument != NULL);
 
         CPDF_Dictionary* pAcroFormDict = NULL;
 
-        FX_BOOL bWidget = (m_pAnnotDict->GetString("Subtype") == "Widget");
+        FX_BOOL bWidget = (m_pAnnotDict->GetStringAt("Subtype") == "Widget");
 
         if (bWidget)
         {
                 if (CPDF_Dictionary * pRootDict = m_pDocument->GetRoot())
                         pAcroFormDict = pRootDict->GetDict("AcroForm");
         }
 
         CFX_ByteString sDA;
         CPDF_Object* pObj;
         if ((pObj = FPDF_GetFieldAttr(m_pAnnotDict, "DA")))
@@ skipping 46 matching lines @@
 }
 
 void CBA_FontMap::SetAPType(const CFX_ByteString& sAPType)
 {
         m_sAPType = sAPType;
 
         Reset();
         Initial();
 }