core/ difference with XFA (for information only).

core/src/fxcrt/fx_extension.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/fxcrt/fx_basic.h"
 #include "../../include/fxcrt/fx_ext.h"
 #include "extension.h"
 #if _FXM_PLATFORM_ == _FXM_PLATFORM_WINDOWS_
 #include <wincrypt.h>
 #else
 #include <ctime>
 #endif
 
+#ifdef PDF_ENABLE_XFA
+IFX_FileAccess* FX_CreateDefaultFileAccess(const CFX_WideStringC& wsPath) {
+  if (wsPath.GetLength() == 0)
+    return NULL;
+
+  CFX_CRTFileAccess* pFA = NULL;
+  pFA = new CFX_CRTFileAccess;
+  if (NULL == pFA)
+    return NULL;
+
+  pFA->Init(wsPath);
+  return pFA;
+}
+#endif
 IFX_FileStream* FX_CreateFileStream(const FX_CHAR* filename, FX_DWORD dwModes) {
   IFXCRT_FileAccess* pFA = FXCRT_FileAccess_Create();
   if (!pFA) {
     return NULL;
   }
   if (!pFA->Open(filename, dwModes)) {
     pFA->Release();
     return NULL;
   }
   return new CFX_CRTFileStream(pFA);
@@ skipping 267 matching lines @@
 void FX_Random_GenerateCrypto(FX_DWORD* pBuffer, int32_t iCount) {
 #if _FXM_PLATFORM_ == _FXM_PLATFORM_WINDOWS_
   FX_GenerateCryptoRandom(pBuffer, iCount);
 #else
   FX_Random_GenerateBase(pBuffer, iCount);
 #endif
 }
 #ifdef __cplusplus
 }
 #endif
+#ifdef PDF_ENABLE_XFA
+#ifdef __cplusplus
+extern "C" {
+#endif
+void FX_GUID_CreateV4(FX_LPGUID pGUID) {
+#if (_FX_OS_ == _FX_WIN32_DESKTOP_ || _FX_OS_ == _FX_WIN32_MOBILE_ || \
+     _FX_OS_ == _FX_WIN64_)
+#ifdef _FX_WINAPI_PARTITION_DESKTOP_
+  if (!FX_GenerateCryptoRandom((FX_DWORD*)pGUID, 4)) {
+    FX_Random_GenerateMT((FX_DWORD*)pGUID, 4);
+  }
+#else
+  FX_Random_GenerateMT((FX_DWORD*)pGUID, 4);
+#endif
+#else
+  FX_Random_GenerateMT((FX_DWORD*)pGUID, 4);
+#endif
+  uint8_t& b = ((uint8_t*)pGUID)[6];
+  b = (b & 0x0F) | 0x40;
+}
+const FX_CHAR* gs_FX_pHexChars = "0123456789ABCDEF";
+void FX_GUID_ToString(FX_LPCGUID pGUID,
+                      CFX_ByteString& bsStr,
+                      FX_BOOL bSeparator) {
+  FX_CHAR* pBuf = bsStr.GetBuffer(40);
+  uint8_t b;
+  for (int32_t i = 0; i < 16; i++) {
+    b = ((const uint8_t*)pGUID)[i];
+    *pBuf++ = gs_FX_pHexChars[b >> 4];
+    *pBuf++ = gs_FX_pHexChars[b & 0x0F];
+    if (bSeparator && (i == 3 || i == 5 || i == 7 || i == 9)) {
+      *pBuf++ = L'-';
+    }
+  }
+  bsStr.ReleaseBuffer(bSeparator ? 36 : 32);
+}
+#ifdef __cplusplus
+}
+#endif
+#endif