// iface.c

void iface_load_stack(char *filename) {
    struct fsm *net;
    fsm_read_binary_handle fsrh;

    if ((fsrh = fsm_read_binary_file_multiple_init(filename)) == NULL) { // io.c
	fprintf(stderr, "%s: ", filename);
        perror("File error");
        return;
    }
    while ((net = fsm_read_binary_file_multiple(fsrh)) != NULL) // io.c
        stack_add(net); // stack.c
    return;
}

void iface_apply_up(char *word) {
    int i;
    char *result;
    struct apply_handle *ah; 
    if (!iface_stack_check(1)) {
        return;
    }
    ah = stack_get_ah(); // stack.c
    
    iface_apply_set_params(ah);
    result = apply_up(ah, word); // apply.c

    if (result == NULL) {
        printf("???\n");
        return;
    } else {
        printf("%s\n",result);
    }
    for (i = g_list_limit; i > 0; i--) {
        result = apply_up(ah, NULL); // apply.c
        if (result == NULL)
            break;
        printf("%s\n",result);
    }
}

int iface_stack_check (int size) {
    if (stack_size() < size) { // stack.c
        printf("Not enough networks on stack. Operation requires at least %i.\n",size);
        return 0;
    }
    return 1;
}

// clb???
void iface_apply_set_params(struct apply_handle *h) {
    apply_set_print_space(h, g_print_space);
    apply_set_print_pairs(h, g_print_pairs);
    apply_set_show_flags(h, g_show_flags);
    apply_set_obey_flags(h, g_obey_flags);
}

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