Replace calls to deprecated CFX_{Wide,Byte}String::Empty()

xfa/fxfa/parser/xfa_localevalue.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 "xfa/fxfa/parser/xfa_localevalue.h"
 
 #include "xfa/fgas/localization/fgas_localeimp.h"
 #include "xfa/fxfa/fm2js/xfa_fm2jsapi.h"
@@ skipping 124 matching lines @@
       case FX_LOCALECATEGORY_Num: {
         CFX_WideString fNum;
         bRet = pFormat->ParseNum(wsValue, wsFormat, fNum);
         if (!bRet) {
           bRet = pFormat->FormatNum(wsValue, wsFormat, wsOutput);
         }
         break;
       }
       case FX_LOCALECATEGORY_Text:
         bRet = pFormat->ParseText(wsValue, wsFormat, wsOutput);
-        wsOutput.Empty();
+        wsOutput.clear();
         if (!bRet) {
           bRet = pFormat->FormatText(wsValue, wsFormat, wsOutput);
         }
         break;
       case FX_LOCALECATEGORY_Date: {
         CFX_Unitime dt;
         bRet = ValidateCanonicalDate(wsValue, dt);
         if (!bRet) {
           bRet = pFormat->ParseDateTime(wsValue, wsFormat, FX_DATETIMETYPE_Date,
                                         dt);
@@ skipping 301 matching lines @@
 FX_BOOL CXFA_LocaleValue::SetDateTime(const CFX_WideString& wsDateTime,
                                       const CFX_WideString& wsFormat,
                                       IFX_Locale* pLocale) {
   m_dwType = XFA_VT_DATETIME;
   return m_bValid = ParsePatternValue(wsDateTime, wsFormat, pLocale);
 }
 FX_BOOL CXFA_LocaleValue::FormatPatterns(CFX_WideString& wsResult,
                                          const CFX_WideString& wsFormat,
                                          IFX_Locale* pLocale,
                                          XFA_VALUEPICTURE eValueType) const {
-  wsResult.Empty();
+  wsResult.clear();
   FX_BOOL bRet = FALSE;
 
   CFX_FormatString* pFormat = nullptr;
   if (m_pLocaleMgr)
     pFormat = new CFX_FormatString(m_pLocaleMgr, FALSE);
 
   CFX_WideStringArray wsPatterns;
   pFormat->SplitFormatString(wsFormat, wsPatterns);
   int32_t iCount = wsPatterns.GetSize();
   for (int32_t i = 0; i < iCount; i++) {
     bRet = FormatSinglePattern(wsResult, wsPatterns[i], pLocale, eValueType);
     if (bRet) {
       break;
     }
   }
   pFormat->Release();
   return bRet;
 }
 FX_BOOL CXFA_LocaleValue::FormatSinglePattern(
     CFX_WideString& wsResult,
     const CFX_WideString& wsFormat,
     IFX_Locale* pLocale,
     XFA_VALUEPICTURE eValueType) const {
   IFX_Locale* locale = m_pLocaleMgr->GetDefLocale();
   if (pLocale) {
     m_pLocaleMgr->SetDefLocale(pLocale);
   }
-  wsResult.Empty();
+  wsResult.clear();
   FX_BOOL bRet = FALSE;
 
   CFX_FormatString* pFormat = nullptr;
   if (m_pLocaleMgr)
     pFormat = new CFX_FormatString(m_pLocaleMgr, FALSE);
 
   FX_LOCALECATEGORY eCategory = pFormat->GetCategory(wsFormat);
   eCategory = XFA_ValugeCategory(eCategory, m_dwType);
   switch (eCategory) {
     case FX_LOCALECATEGORY_Null:
@@ skipping 309 matching lines @@
   FX_BOOL bRet = FALSE;
   int32_t iCount = wsPatterns.GetSize();
   for (int32_t i = 0; i < iCount && !bRet; i++) {
     CFX_WideString wsFormat = wsPatterns[i];
     FX_LOCALECATEGORY eCategory = pFormat->GetCategory(wsFormat);
     eCategory = XFA_ValugeCategory(eCategory, m_dwType);
     switch (eCategory) {
       case FX_LOCALECATEGORY_Null:
         bRet = pFormat->ParseNull(wsValue, wsFormat);
         if (bRet) {
-          m_wsValue.Empty();
+          m_wsValue.clear();
         }
         break;
       case FX_LOCALECATEGORY_Zero:
         bRet = pFormat->ParseZero(wsValue, wsFormat);
         if (bRet) {
           m_wsValue = FX_WSTRC(L"0");
         }
         break;
       case FX_LOCALECATEGORY_Num: {
         CFX_WideString fNum;
@@ skipping 154 matching lines @@
       } else if (cf == L'z') {
         nf++;
       } else {
         return FALSE;
       }
     }
     n++;
   }
   return n == nCount;
 }