--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Resources/Orthanc/Core/FileStorage/StorageAccessor.cpp	Fri Mar 23 11:04:03 2018 +0100
@@ -0,0 +1,204 @@
+/**
+ * Orthanc - A Lightweight, RESTful DICOM Store
+ * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics
+ * Department, University Hospital of Liege, Belgium
+ * Copyright (C) 2017-2018 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 "StorageAccessor.h"
+
+#include "../Compression/ZlibCompressor.h"
+#include "../OrthancException.h"
+#include "../Toolbox.h"
+#include "../SystemToolbox.h"
+
+#if ORTHANC_ENABLE_CIVETWEB == 1 || ORTHANC_ENABLE_MONGOOSE == 1
+#  include "../HttpServer/HttpStreamTranscoder.h"
+#endif
+
+namespace Orthanc
+{
+  FileInfo StorageAccessor::Write(const void* data,
+                                  size_t size,
+                                  FileContentType type,
+                                  CompressionType compression,
+                                  bool storeMd5)
+  {
+    std::string uuid = SystemToolbox::GenerateUuid();
+
+    std::string md5;
+
+    if (storeMd5)
+    {
+      Toolbox::ComputeMD5(md5, data, size);
+    }
+
+    switch (compression)
+    {
+      case CompressionType_None:
+      {
+        area_.Create(uuid, data, size, type);
+        return FileInfo(uuid, type, size, md5);
+      }
+
+      case CompressionType_ZlibWithSize:
+      {
+        ZlibCompressor zlib;
+
+        std::string compressed;
+        zlib.Compress(compressed, data, size);
+
+        std::string compressedMD5;
+      
+        if (storeMd5)
+        {
+          Toolbox::ComputeMD5(compressedMD5, compressed);
+        }
+
+        if (compressed.size() > 0)
+        {
+          area_.Create(uuid, &compressed[0], compressed.size(), type);
+        }
+        else
+        {
+          area_.Create(uuid, NULL, 0, type);
+        }
+
+        return FileInfo(uuid, type, size, md5,
+                        CompressionType_ZlibWithSize, compressed.size(), compressedMD5);
+      }
+
+      default:
+        throw OrthancException(ErrorCode_NotImplemented);
+    }
+  }
+
+
+  void StorageAccessor::Read(std::string& content,
+                             const FileInfo& info)
+  {
+    switch (info.GetCompressionType())
+    {
+      case CompressionType_None:
+      {
+        area_.Read(content, info.GetUuid(), info.GetContentType());
+        break;
+      }
+
+      case CompressionType_ZlibWithSize:
+      {
+        ZlibCompressor zlib;
+
+        std::string compressed;
+        area_.Read(compressed, info.GetUuid(), info.GetContentType());
+        IBufferCompressor::Uncompress(content, zlib, compressed);
+        break;
+      }
+
+      default:
+      {
+        throw OrthancException(ErrorCode_NotImplemented);
+      }
+    }
+
+    // TODO Check the validity of the uncompressed MD5?
+  }
+
+
+  void StorageAccessor::Read(Json::Value& content,
+                             const FileInfo& info)
+  {
+    std::string s;
+    Read(s, info);
+
+    Json::Reader reader;
+    if (!reader.parse(s, content))
+    {
+      throw OrthancException(ErrorCode_BadFileFormat);
+    }
+  }
+
+
+#if ORTHANC_ENABLE_CIVETWEB == 1 || ORTHANC_ENABLE_MONGOOSE == 1
+  void StorageAccessor::SetupSender(BufferHttpSender& sender,
+                                    const FileInfo& info,
+                                    const std::string& mime)
+  {
+    area_.Read(sender.GetBuffer(), info.GetUuid(), info.GetContentType());
+    sender.SetContentType(mime);
+
+    const char* extension;
+    switch (info.GetContentType())
+    {
+      case FileContentType_Dicom:
+        extension = ".dcm";
+        break;
+
+      case FileContentType_DicomAsJson:
+        extension = ".json";
+        break;
+
+      default:
+        // Non-standard content type
+        extension = "";
+    }
+
+    sender.SetContentFilename(info.GetUuid() + std::string(extension));
+  }
+#endif
+
+
+#if ORTHANC_ENABLE_CIVETWEB == 1 || ORTHANC_ENABLE_MONGOOSE == 1
+  void StorageAccessor::AnswerFile(HttpOutput& output,
+                                   const FileInfo& info,
+                                   const std::string& mime)
+  {
+    BufferHttpSender sender;
+    SetupSender(sender, info, mime);
+  
+    HttpStreamTranscoder transcoder(sender, info.GetCompressionType());
+    output.Answer(transcoder);
+  }
+#endif
+
+
+#if ORTHANC_ENABLE_CIVETWEB == 1 || ORTHANC_ENABLE_MONGOOSE == 1
+  void StorageAccessor::AnswerFile(RestApiOutput& output,
+                                   const FileInfo& info,
+                                   const std::string& mime)
+  {
+    BufferHttpSender sender;
+    SetupSender(sender, info, mime);
+  
+    HttpStreamTranscoder transcoder(sender, info.GetCompressionType());
+    output.AnswerStream(transcoder);
+  }
+#endif
+}