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/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* brainfuck.c :+: :+: :+: */
/* +:+ +:+ +:+ */
/* By: exam <marvin@42.fr> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2019/07/26 16:42:44 by exam #+# #+# */
/* Updated: 2019/07/26 17:43:25 by exam ### ########.fr */
/* */
/* ************************************************************************** */
#include "stack.h"
#include <stdlib.h>
#include <unistd.h>
void go_close(char **str)
{
t_stack *st;
st = create_elem(**str);
while (st != NULL)
{
(*str)++;
if (**str == '[')
st = push(st, '[');
if (**str == ']')
st = pop(st);
}
}
void go_open(char **str)
{
t_stack *st;
st = create_elem(**str);
while (st != NULL)
{
(*str)--;
if (**str == ']')
st = push(st, ']');
if (**str == '[')
st = pop(st);
}
}
int main(int argc, char **argv)
{
char *ptr;
char *origin;
char *str;
int i;
if (argc != 2)
{
write(1, "\n", 1);
return (0);
}
origin = (char*)malloc(2048);
ptr = origin;
i = 0;
while (i < 2048)
ptr[i++] = 0;
str = argv[1];
while (*str)
{
if (*str == '>')
ptr++;
else if (*str == '<')
ptr--;
else if (*str == '+')
(*ptr)++;
else if (*str == '-')
(*ptr)--;
else if (*str == '.')
write(1, ptr, 1);
else if (*str == '[' && *ptr == 0)
go_close(&str);
else if (*str == ']' && *ptr != 0)
go_open(&str);
str++;
}
free(origin);
return (0);
}
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