--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Core/DicomParsing/ParsedDicomDir.h	Wed Oct 30 10:48:26 2019 +0100
@@ -0,0 +1,80 @@
+/**
+ * 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/>.
+ **/
+
+
+#pragma once
+
+#if ORTHANC_ENABLE_DCMTK != 1
+#  error The macro ORTHANC_ENABLE_DCMTK must be set to 1 to use this file
+#endif
+
+#include "../DicomFormat/DicomMap.h"
+
+namespace Orthanc
+{
+  class ParsedDicomDir : public boost::noncopyable
+  {
+  private:
+    typedef std::map<uint32_t, size_t>  OffsetToIndex;
+
+    std::vector<DicomMap*>  content_;
+    std::vector<size_t>     nextOffsets_;
+    std::vector<size_t>     lowerOffsets_;
+    OffsetToIndex           offsetToIndex_;
+
+    void Clear();
+
+    bool LookupIndexOfOffset(size_t& target,
+                             unsigned int offset) const;
+
+  public:
+    ParsedDicomDir(const std::string content);
+
+    ~ParsedDicomDir()
+    {
+      Clear();
+    }
+
+    size_t GetSize() const
+    {
+      return content_.size();
+    }
+
+    const DicomMap& GetItem(size_t i) const;
+
+    bool LookupNext(size_t& target,
+                    size_t index) const;
+
+    bool LookupLower(size_t& target,
+                     size_t index) const;
+  };
+}