/** @file variables.hpp */
/** Listing 57-6. The variables.hpp File */
#ifndef VARIABLES_HPP_
#define VARIABLES_HPP_

#include <map>
#include <string>

typedef std::map<std::string, std::string> variable_map;
extern variable_map global_variables;

/// Expand variables in a string using a local map
/// and the global map.
/// @param str The string to expand
/// @param local_variables The optional, local map; can be null
/// @return The expanded string
std::string expand(std::string str, variable_map const* local_variables = 0);

#endif // VARIABLES_HPP_