#include <stdio.h>
#include <stdlib.h>

#include "reverse.h"

struct line {
    char chars[MAX_LINE_SIZE];
    struct line * next;
};

static struct line * first_line = 0;

void reverse_init() {
    first_line = 0;
}

int reverse_add_line(const char * l) {
    struct line * new_line = malloc(sizeof(struct line));

    if (!new_line)
	return 0;

    int i;
    for(i = 0; i < MAX_LINE_SIZE - 1 && l[i] != 0; ++i)
	new_line->chars[i] = l[i];
    new_line->chars[i] = 0;
    new_line->next = first_line;
    first_line = new_line;
    return 1;
}

void reverse_print() {
    struct line * l;
    for(l = first_line; l != 0; l = l->next)
	printf("%s", l->chars);
}

void reverse_shutdown() {
    while (first_line) {
	struct line * next = first_line->next;
	free(first_line);
	first_line = next;
    }
}