Use smart pointers for class owned pointers in xfa/fxfa

xfa/fgas/font/fgas_stdfontmgr.cpp

 // Copyright 2015 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/fgas/font/fgas_stdfontmgr.h"
 
 #include "core/fxcrt/include/fx_stream.h"
 #include "core/fxge/include/cfx_fontmapper.h"
 #include "core/fxge/include/cfx_fontmgr.h"
 #include "core/fxge/include/cfx_gemodule.h"
 #include "core/fxge/include/ifx_systemfontinfo.h"
 #include "xfa/fgas/crt/fgas_codepage.h"
 #include "xfa/fgas/font/fgas_fontutils.h"
 #include "xfa/fgas/font/fgas_gefont.h"
 
 #if _FXM_PLATFORM_ == _FXM_PLATFORM_WINDOWS_
 
-IFGAS_FontMgr* IFGAS_FontMgr::Create(FX_LPEnumAllFonts pEnumerator) {
-  return new CFGAS_StdFontMgrImp(pEnumerator);
+std::unique_ptr<IFGAS_FontMgr> IFGAS_FontMgr::Create(
+    FX_LPEnumAllFonts pEnumerator) {
+  return std::unique_ptr<IFGAS_FontMgr>(new CFGAS_StdFontMgrImp(pEnumerator));
 }
 
 CFGAS_StdFontMgrImp::CFGAS_StdFontMgrImp(FX_LPEnumAllFonts pEnumerator)
     : m_pEnumerator(pEnumerator),
       m_FontFaces(100),
       m_CPFonts(8),
       m_FamilyFonts(16),
       m_UnicodeFonts(16),
       m_BufferFonts(4),
       m_StreamFonts(4),
       m_DeriveFonts(4) {
   if (m_pEnumerator) {
     m_pEnumerator(m_FontFaces, nullptr, 0xFEFF);
   }
 }
 
 CFGAS_StdFontMgrImp::~CFGAS_StdFontMgrImp() {
   m_FontFaces.RemoveAll(FALSE);
   m_CPFonts.RemoveAll();
   m_FamilyFonts.RemoveAll();
   m_UnicodeFonts.RemoveAll();
   m_BufferFonts.RemoveAll();
   m_StreamFonts.RemoveAll();
   m_DeriveFonts.RemoveAll();
   for (int32_t i = m_Fonts.GetUpperBound(); i >= 0; i--)
     m_Fonts[i]->Release();
 }
 
-void CFGAS_StdFontMgrImp::Release() {
-  delete this;
-}
-
 CFGAS_GEFont* CFGAS_StdFontMgrImp::GetDefFontByCodePage(
     uint16_t wCodePage,
     uint32_t dwFontStyles,
     const FX_WCHAR* pszFontFamily) {
   uint32_t dwHash = FGAS_GetFontHashCode(wCodePage, dwFontStyles);
   CFGAS_GEFont* pFont = nullptr;
   if (m_CPFonts.Lookup((void*)(uintptr_t)dwHash, (void*&)pFont)) {
     return pFont ? LoadFont(pFont, dwFontStyles, wCodePage) : nullptr;
   }
   FX_FONTDESCRIPTOR const* pFD =
@@ skipping 493 matching lines @@
   return (FX_POSITION)-1;
 }
 
 IFX_FileAccess* CFX_FontSourceEnum_File::GetNext(FX_POSITION& pos) {
   IFX_FileAccess* pAccess = FX_CreateDefaultFileAccess(m_wsNext.AsStringC());
   m_wsNext = GetNextFile().UTF8Decode();
   pos = m_wsNext.GetLength() != 0 ? pAccess : nullptr;
   return pAccess;
 }
 
-IFGAS_FontMgr* IFGAS_FontMgr::Create(CFX_FontSourceEnum_File* pFontEnum) {
+std::unique_ptr<IFGAS_FontMgr> IFGAS_FontMgr::Create(
+    CFX_FontSourceEnum_File* pFontEnum) {
   if (!pFontEnum)
     return nullptr;
 
   std::unique_ptr<CFGAS_FontMgrImp> pFontMgr(new CFGAS_FontMgrImp(pFontEnum));
   if (!pFontMgr->EnumFonts())
     return nullptr;
-  return pFontMgr.release();
+  return std::move(pFontMgr);
 }
 
 CFGAS_FontMgrImp::CFGAS_FontMgrImp(CFX_FontSourceEnum_File* pFontEnum)
     : m_pFontSource(pFontEnum) {}
 
-CFGAS_FontMgrImp::~CFGAS_FontMgrImp() {}
+CFGAS_FontMgrImp::~CFGAS_FontMgrImp() {
+  for (int32_t i = 0; i < m_InstalledFonts.GetSize(); i++) {
+    delete m_InstalledFonts[i];
+  }
+  FX_POSITION pos = m_Hash2CandidateList.GetStartPosition();
+  while (pos) {
+    uint32_t dwHash;
+    CFX_FontDescriptorInfos* pDescs;
+    m_Hash2CandidateList.GetNextAssoc(pos, dwHash, pDescs);
+    delete pDescs;
+  }
+  pos = m_Hash2Fonts.GetStartPosition();
+  while (pos) {
+    uint32_t dwHash;
+    CFX_ArrayTemplate<CFGAS_GEFont*>* pFonts;
+    m_Hash2Fonts.GetNextAssoc(pos, dwHash, pFonts);
+    delete pFonts;
+  }
+  m_Hash2Fonts.RemoveAll();
+  pos = m_IFXFont2FileRead.GetStartPosition();
+  while (pos) {
+    CFGAS_GEFont* pFont;
+    IFX_FileRead* pFileRead;
+    m_IFXFont2FileRead.GetNextAssoc(pos, pFont, pFileRead);
+    pFileRead->Release();
+  }
+}
 
 FX_BOOL CFGAS_FontMgrImp::EnumFontsFromFontMapper() {
   CFX_FontMapper* pFontMapper =
       CFX_GEModule::Get()->GetFontMgr()->GetBuiltinMapper();
   if (!pFontMapper)
     return FALSE;
 
   IFX_SystemFontInfo* pSystemFontInfo = pFontMapper->GetSystemFontInfo();
   if (!pSystemFontInfo)
     return FALSE;
@@ skipping 36 matching lines @@
     return FALSE;
   return TRUE;
 }
 
 FX_BOOL CFGAS_FontMgrImp::EnumFonts() {
   if (EnumFontsFromFontMapper())
     return TRUE;
   return EnumFontsFromFiles();
 }
 
-void CFGAS_FontMgrImp::Release() {
-  for (int32_t i = 0; i < m_InstalledFonts.GetSize(); i++) {
-    delete m_InstalledFonts[i];
-  }
-  FX_POSITION pos = m_Hash2CandidateList.GetStartPosition();
-  while (pos) {
-    uint32_t dwHash;
-    CFX_FontDescriptorInfos* pDescs;
-    m_Hash2CandidateList.GetNextAssoc(pos, dwHash, pDescs);
-    delete pDescs;
-  }
-  pos = m_Hash2Fonts.GetStartPosition();
-  while (pos) {
-    uint32_t dwHash;
-    CFX_ArrayTemplate<CFGAS_GEFont*>* pFonts;
-    m_Hash2Fonts.GetNextAssoc(pos, dwHash, pFonts);
-    delete pFonts;
-  }
-  m_Hash2Fonts.RemoveAll();
-  pos = m_IFXFont2FileRead.GetStartPosition();
-  while (pos) {
-    CFGAS_GEFont* pFont;
-    IFX_FileRead* pFileRead;
-    m_IFXFont2FileRead.GetNextAssoc(pos, pFont, pFileRead);
-    pFileRead->Release();
-  }
-  delete this;
-}
-
 CFGAS_GEFont* CFGAS_FontMgrImp::GetDefFontByCodePage(
     uint16_t wCodePage,
     uint32_t dwFontStyles,
     const FX_WCHAR* pszFontFamily) {
   return nullptr;
 }
 
 CFGAS_GEFont* CFGAS_FontMgrImp::GetDefFontByCharset(
     uint8_t nCharset,
     uint32_t dwFontStyles,
@@ skipping 715 matching lines @@
 
 int32_t CFGAS_FontMgrImp::IsPartName(const CFX_WideString& Name1,
                                      const CFX_WideString& Name2) {
   if (Name1.Find(Name2.c_str()) != -1) {
     return 1;
   }
   return 0;
 }
 
 #endif