#include <iostream>
#include <stdio.h>

#include "trick/Environment.hh"
#include "trick/env_proto.h"

extern Trick::Environment * the_env ;

/**
 @relates Trick::Environment
 @copydoc Trick::Environment::add_var
 */
extern "C" int env_add_var( const char * variable_name, const char * value) {

    std::string var_string ;
    std::string value_string ;

    // Add handling for NULL string.
    if ( variable_name == NULL ) {
        var_string.clear() ;
    } else {
        var_string = std::string(variable_name) ;
    }

    if ( value == NULL ) {
        value_string.clear() ;
    } else {
        value_string = std::string(value) ;
    }

    return ( the_env->add_var(var_string, value_string) );

}

/**
 @relates Trick::Environment
 @copydoc Trick::Environment::get_var
 */
extern "C" const char * get_trick_env( char * variable_name ) {
    return ( env_get_var(variable_name) ) ;
}

/**
 @relates Trick::Environment
 @copydoc Trick::Environment::get_var
 */
extern "C" const char * env_get_var( const char * variable_name ) {

    std::string var_string ;

    // Add handling for NULL string.
    if ( variable_name == NULL ) {
        var_string.clear() ;
    } else {
        var_string = std::string(variable_name) ;
    }

    return ( the_env->get_var(var_string) );

}

/**
 @relates Trick::Environment
 @copydoc Trick::Environment::print_vars
 */
extern "C" int env_print_vars( FILE * fp) {
    return ( the_env->print_vars(fp) ) ;
}