JSon/JComparator.hh

Go to the documentation of this file.

#ifndef __JSON__JCOMPARATOR__
#define __JSON__JCOMPARATOR__
 
#include <ostream>
#include <iomanip>
 
#include "JSon/JSon.hh"
 
 
/**
 * \author mdejong
 */
 
namespace JSON {}
namespace JPP { using namespace JSON; }
 
namespace JSON {
 
  /**
   * Auxiliary data structure to compare (part of) JSon data.
   *
   * The key can be used to specify which part of the JSon data to print.\n
   * For example:
   * <pre>
   *   "Error.Code"
   * </pre>
   * will compare the error codes some specific JSon data.
   */
  struct JComparator {
 
    char SEPARATOR = '.';
 
    /**
     * Defaut constructor.
     */
    JComparator()
    {}
 
 
    /**
     * Auxiliary method to compare (part of) JSon data.
     *
     * \param  ja         JSon data
     * \param  jb         JSon data
     * \param  key        key
     */
    inline json operator()(const json& ja, const json& jb, const std::string& key) const
    {
      using namespace std;
 
      const size_t pos = key.find(SEPARATOR);
 
      if (pos != string::npos) {
        return (*this)(ja[key.substr(0,pos)], ja[key.substr(0,pos)], key.substr(pos + 1));
      } else if (key != "") {
        return json::diff(ja[key], jb[key]);
      } else {
        return json::diff(ja, jb);
      }
    }
  };
}
 
#endif