FileWrapper: added ReadWholeFile overload for data blob

Author: TheMostDiligent

Common/CMakeLists.txt

@@ -53,6 +53,7 @@ set(SOURCE
     src/BasicFileStream.cpp
     src/DataBlobImpl.cpp
     src/DefaultRawMemoryAllocator.cpp
+    src/FileWrapper.cpp
     src/FixedBlockMemoryAllocator.cpp
     src/MemoryFileStream.cpp
     src/Serializer.cpp

Common/interface/FileWrapper.hpp

@@ -1,5 +1,5 @@
 /*
- *  Copyright 2019-2022 Diligent Graphics LLC
+ *  Copyright 2019-2024 Diligent Graphics LLC
  *  Copyright 2015-2019 Egor Yusov
  *
  *  Licensed under the Apache License, Version 2.0 (the "License");
@@ -30,6 +30,7 @@
 #include <vector>
 
 #include "../../Primitives/interface/Errors.hpp"
+#include "../../Primitives/interface/DataBlob.h"
 #include "../../Platforms/Basic/interface/DebugUtilities.hpp"
 #include "../../Platforms/interface/FileSystem.hpp"
 
@@ -89,30 +90,8 @@ class FileWrapper
 
     explicit operator bool() const { return m_pFile != nullptr; }
 
-    static bool ReadWholeFile(const char* FilePath, std::vector<Uint8>& Data)
-    {
-        VERIFY_EXPR(FilePath != nullptr);
-
-        FileWrapper File{FilePath, EFileAccessMode::Read};
-        if (!File)
-        {
-            LOG_ERROR_MESSAGE("Failed to open file ", FilePath);
-            return false;
-        }
-
-        const auto Size = File->GetSize();
-        Data.resize(Size);
-        if (Size > 0)
-        {
-            if (!File->Read(Data.data(), Size))
-            {
-                LOG_ERROR_MESSAGE("Failed to read file ", FilePath);
-                return false;
-            }
-        }
-
-        return true;
-    }
+    static bool ReadWholeFile(const char* FilePath, std::vector<Uint8>& Data, bool Silent = false);
+    static bool ReadWholeFile(const char* FilePath, IDataBlob** ppData, bool Silent = false);
 
 private:
     FileWrapper(const FileWrapper&);

Common/src/FileWrapper.cpp

@@ -0,0 +1,102 @@
+/*
+ *  Copyright 2024 Diligent Graphics LLC
+ *
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ *
+ *  In no event and under no legal theory, whether in tort (including negligence),
+ *  contract, or otherwise, unless required by applicable law (such as deliberate
+ *  and grossly negligent acts) or agreed to in writing, shall any Contributor be
+ *  liable for any damages, including any direct, indirect, special, incidental,
+ *  or consequential damages of any character arising as a result of this License or
+ *  out of the use or inability to use the software (including but not limited to damages
+ *  for loss of goodwill, work stoppage, computer failure or malfunction, or any and
+ *  all other commercial damages or losses), even if such Contributor has been advised
+ *  of the possibility of such damages.
+ */
+
+#include "FileWrapper.hpp"
+#include "DataBlobImpl.hpp"
+
+namespace Diligent
+{
+
+bool FileWrapper::ReadWholeFile(const char* FilePath, std::vector<Uint8>& Data, bool Silent)
+{
+    if (FilePath == nullptr)
+    {
+        DEV_ERROR("File path must not be null");
+        return false;
+    }
+
+    FileWrapper File{FilePath, EFileAccessMode::Read};
+    if (!File)
+    {
+        if (!Silent)
+        {
+            LOG_ERROR_MESSAGE("Failed to open file '", FilePath, "'.");
+        }
+        return false;
+    }
+
+    const size_t Size = File->GetSize();
+    Data.resize(Size);
+    if (Size > 0)
+    {
+        if (!File->Read(Data.data(), Size))
+        {
+            if (!Silent)
+            {
+                LOG_ERROR_MESSAGE("Failed to read file '", FilePath, "'.");
+            }
+            return false;
+        }
+    }
+
+    return true;
+}
+
+bool FileWrapper::ReadWholeFile(const char* FilePath, IDataBlob** ppData, bool Silent)
+{
+    if (ppData == nullptr)
+    {
+        DEV_ERROR("Data pointer must not be null");
+        return false;
+    }
+
+    DEV_CHECK_ERR(*ppData == nullptr, "Data pointer is not null. This may result in memory leak.");
+
+    FileWrapper File{FilePath, EFileAccessMode::Read};
+    if (!File)
+    {
+        if (!Silent)
+        {
+            LOG_ERROR_MESSAGE("Failed to open file '", FilePath, "'.");
+        }
+        return false;
+    }
+
+    RefCntAutoPtr<DataBlobImpl> pData = DataBlobImpl::Create();
+    if (!File->Read(pData))
+    {
+        if (!Silent)
+        {
+            LOG_ERROR_MESSAGE("Failed to read file '", FilePath, "'.");
+        }
+        return false;
+    }
+
+    *ppData = pData.Detach();
+    return true;
+}
+
+} // namespace Diligent