/Users/barrand/private/dev/softinex/old/inexlib-1.2/inlib/inlib/mparam

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// Copyright (C) 2010, Guy Barrand. All rights reserved.
// See the file inlib.license for terms.

#ifndef inlib_mparam
#define inlib_mparam

// parameter for a main. Coming from environment
// or from (argc,argv) command line arguments.
// Used in SoSDL applications.

#include "args"
#include "system"

namespace inlib {

inline bool mparam_bool(bool a_from_env,
                           const inlib::args& a_args, 
                           const std::string& a_prefix,
                           const std::string& a_name,
                           const bool& a_def,
                           bool& a_value) {
  a_value = a_def;
  bool found = true;
  if(a_from_env) { 
    std::string NAME(a_name);
    inlib::touppercase(NAME);
    if(!inlib::get_env_bool(a_prefix+NAME,a_value)) {
      found = false;
      a_value = a_def;
    }
  } else {
    if(!a_args.find("-"+a_name,a_value)) {
      found = false;
      a_value = a_def;
    }
  }
  return found;
}

inline bool mparam(bool a_from_env,const inlib::args& a_args,
                      const std::string& a_prefix,
                      const std::string& a_name,
                      const std::string& a_def,
                      std::string& a_value) {
  a_value = a_def;
  bool found = true;
  if(a_from_env) { 
    std::string NAME(a_name);
    inlib::touppercase(NAME);
    if(!inlib::getenv(a_prefix+NAME,a_value)) {
      found = false;
      a_value = a_def;
    }
  } else {
    if(!a_args.find("-"+a_name,a_value)) {
      found = false;
      a_value = a_def;
    }
  }
  return found;
}

template <class T>
inline bool mparam(bool a_from_env,const inlib::args& a_args,
                   const std::string& a_prefix,
                   const std::string& a_name,
                   const T& a_def,T& a_value) {
  a_value = a_def;
  bool found = true;
  if(a_from_env) { 
    std::string NAME(a_name);
    inlib::touppercase(NAME);
    if(!inlib::get_env<T>(a_prefix+NAME,a_value)) {
      found = false;
      a_value = a_def;
    }
  } else {
    if(!a_args.find<T>("-"+a_name,a_value)) {
      found = false;
      a_value = a_def;
    }
  }
  return found;
}

}

#endif