parameterreader.h

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#ifndef PARAMETERREADER_h_
#define PARAMETERREADER_h_

#include <deal.II/base/parameter_handler.h>

using namespace dealii;
namespace DOpE
{
class ParameterReader : public Subscriptor
 {
   public:
   inline ParameterReader();
   inline void SetSubsection(const std::string subsection);
   inline void read_parameters(const std::string parameter_file);
   inline void declare_entry (const std::string &entry, 
                       const std::string &default_value, 
                       const Patterns::PatternBase &pattern=Patterns::Anything(), 
                       const std::string &documentation=std::string());
   inline double get_double (const std::string &entry_name);
   inline int get_integer (const std::string &entry_name);
   inline std::string get_string (const std::string &entry_name);
   inline bool  get_bool (const std::string &entry_name);

   private:
     ParameterHandler prm;
     std::string subsection_;
 };


  ParameterReader::ParameterReader()
  { 
    subsection_ = "";
  }

void ParameterReader::SetSubsection(const std::string subsection)
  {
    subsection_ = subsection;
  }

void ParameterReader::declare_entry(const std::string &entry, 
                                    const std::string &default_value, 
                                    const Patterns::PatternBase &pattern, 
                                    const std::string &documentation)
{
  prm.enter_subsection (subsection_);
  {
    prm.declare_entry(entry,default_value,pattern,documentation);
  }
  prm.leave_subsection();
}

void ParameterReader::read_parameters (const std::string parameter_file)
 { 
   prm.read_input (parameter_file); 
 }

double ParameterReader::get_double (const std::string &entry_name) 
{
  double ret;
  prm.enter_subsection(subsection_);
  {
    ret = prm.get_double(entry_name);
  }
  prm.leave_subsection();
  return ret;
}

int ParameterReader::get_integer (const std::string &entry_name)
{
  int ret;
  prm.enter_subsection(subsection_);
  {
    ret = prm.get_integer(entry_name);
  }
  prm.leave_subsection();
  return ret;
}

 std::string ParameterReader::get_string (const std::string &entry_name)
{
  std::string ret;
  prm.enter_subsection(subsection_);
  {
    ret = prm.get(entry_name);
  }
  prm.leave_subsection();
  return ret;
}

bool ParameterReader::get_bool(const std::string &entry_name)
{
  bool ret;
  prm.enter_subsection(subsection_);
  {
    ret = prm.get_bool(entry_name);
  }
  prm.leave_subsection();
  return ret;
}

}
#endif