--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Core/FileBuffer.cpp	Thu May 02 09:22:36 2019 +0200
@@ -0,0 +1,122 @@
+/**
+ * Orthanc - A Lightweight, RESTful DICOM Store
+ * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics
+ * Department, University Hospital of Liege, Belgium
+ * Copyright (C) 2017-2019 Osimis S.A., Belgium
+ *
+ * This program is free software: you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * In addition, as a special exception, the copyright holders of this
+ * program give permission to link the code of its release with the
+ * OpenSSL project's "OpenSSL" library (or with modified versions of it
+ * that use the same license as the "OpenSSL" library), and distribute
+ * the linked executables. You must obey the GNU General Public License
+ * in all respects for all of the code used other than "OpenSSL". If you
+ * modify file(s) with this exception, you may extend this exception to
+ * your version of the file(s), but you are not obligated to do so. If
+ * you do not wish to do so, delete this exception statement from your
+ * version. If you delete this exception statement from all source files
+ * in the program, then also delete it here.
+ * 
+ * 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
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ **/
+
+
+#include "PrecompiledHeaders.h"
+#include "FileBuffer.h"
+
+#include "TemporaryFile.h"
+#include "OrthancException.h"
+
+#include <boost/filesystem/fstream.hpp>
+
+
+namespace Orthanc
+{
+  class FileBuffer::PImpl
+  {
+  private:
+    TemporaryFile                file_;
+    boost::filesystem::ofstream  stream_;
+    bool                         isWriting_;
+
+  public:
+    PImpl() :
+      isWriting_(true)
+    {
+      stream_.open(file_.GetPath(), std::ofstream::out | std::ofstream::binary);
+      if (!stream_.good())
+      {
+        throw OrthancException(ErrorCode_CannotWriteFile);
+      }
+    }
+
+    ~PImpl()
+    {
+      if (isWriting_)
+      {
+        stream_.close();
+      }
+    }
+
+    void Append(const char* buffer,
+                size_t size)
+    {
+      if (!isWriting_)
+      {
+        throw OrthancException(ErrorCode_BadSequenceOfCalls);
+      }
+
+      if (size > 0)
+      {
+        stream_.write(buffer, size);
+        if (!stream_.good())
+        {
+          stream_.close();
+          throw OrthancException(ErrorCode_FileStorageCannotWrite);
+        }
+      }
+    }
+
+    void Read(std::string& target)
+    {
+      if (isWriting_)
+      {
+        stream_.close();
+        isWriting_ = false;
+      }
+
+      file_.Read(target);
+    }
+  };
+
+    
+  FileBuffer::FileBuffer() :
+    pimpl_(new PImpl)
+  {
+  }
+
+
+  void FileBuffer::Append(const char* buffer,
+                          size_t size)
+  {
+    assert(pimpl_.get() != NULL);
+    pimpl_->Append(buffer, size);
+  }
+
+
+  void FileBuffer::Read(std::string& target)
+  {
+    assert(pimpl_.get() != NULL);
+    pimpl_->Read(target);
+  }
+}