FileWatcher.h

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// Copyright 2019-2020 CERN and copyright holders of ALICE O2.
// See https://alice-o2.web.cern.ch/copyright for details of the copyright holders.
// All rights not expressly granted are reserved.
//
// This software is distributed under the terms of the GNU General Public
// License v3 (GPL Version 3), copied verbatim in the file "COPYING".
//
// In applying this license CERN does not waive the privileges and immunities
// granted to it by virtue of its status as an Intergovernmental Organization
// or submit itself to any jurisdiction.
 
 
#ifndef WATCHER_FILEWATCHER_H
#define WATCHER_FILEWATCHER_H
 
#include <string>
#include <deque>
#include <vector>
 
namespace o2
{
namespace event_visualisation
{
 
class FileWatcher
{
  static const char* mLowGuard;   
  static const char* mEndGuard;   
  std::deque<std::string> mFiles; 
  std::string nextItem(const std::string& item) const;
  std::string prevItem(const std::string& item) const;
  std::vector<std::string> mDataFolders; 
  std::string mCurrentFile; 
  const std::vector<std::string>& mExt; 
  bool currentFileExist();
 
 public:
  FileWatcher(const std::vector<std::string>& path, const std::vector<std::string>& ext);
  void changeFolder(const std::string& path);                         
  void changeFolder(const std::vector<std::string>& paths);           
  void saveCurrentFileToFolder(const std::string& destinationFolder); 
  int getSize() const; 
  int getPos() const;  
  void setFirst();
  void setLast();
  void setNext();
  void setPrev();
  void rollToNext();                   
  bool refresh();                      
  std::string currentItem() const;     
  void setCurrentItem(int no);         
  std::string currentFilePath() const; 
};
 
} // namespace event_visualisation
} // namespace o2
 
#endif //WATCHER_FILEWATCHER_H