diff OrthancFramework/Sources/StringMemoryBuffer.h @ 4484:64f06e7d5fc7

new abstraction IMemoryBuffer to avoid unnecessary copies of std::string buffers
author Sebastien Jodogne <s.jodogne@gmail.com>
date Thu, 28 Jan 2021 19:03:19 +0100
parents
children 434843934307
line wrap: on
line diff
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/OrthancFramework/Sources/StringMemoryBuffer.h	Thu Jan 28 19:03:19 2021 +0100
@@ -0,0 +1,62 @@
+/**
+ * Orthanc - A Lightweight, RESTful DICOM Store
+ * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics
+ * Department, University Hospital of Liege, Belgium
+ * Copyright (C) 2017-2021 Osimis S.A., Belgium
+ *
+ * This program is free software: you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public License
+ * as published by the Free Software Foundation, either version 3 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this program. If not, see
+ * <http://www.gnu.org/licenses/>.
+ **/
+
+
+#pragma once
+
+#include "IMemoryBuffer.h"
+#include "Compatibility.h"
+
+namespace Orthanc
+{
+  class StringMemoryBuffer : public IMemoryBuffer
+  {
+  private:
+    std::string   buffer_;
+
+  public:
+    void Copy(const std::string& buffer)
+    {
+      buffer_ = buffer;
+    }
+
+    void Swap(std::string& buffer)
+    {
+      buffer_.swap(buffer);
+    }
+
+    virtual void MoveToString(std::string& target) ORTHANC_OVERRIDE;
+
+    virtual const void* GetData() const ORTHANC_OVERRIDE
+    {
+      return (buffer_.empty() ? NULL : buffer_.c_str());
+    }
+
+    virtual size_t GetSize() const ORTHANC_OVERRIDE
+    {
+      return buffer_.size();
+    }
+
+    static IMemoryBuffer* CreateFromSwap(std::string& buffer);
+
+    static IMemoryBuffer* CreateFromCopy(const std::string& buffer);
+  };
+}