42sh/src/builtins/break.c


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

#include "builtins.h"
#include "utils/env.h"

int my_break(struct string **args)
{
    char *n = "1";
    if (args[0] != NULL)
    {
        char *end;
        long num = strtol(args[0]->data, &end, 10);
        if (*end != '\0' || num <= 0)
        {
            fprintf(stderr, "break: %s: numeric argument required\n",
                    args[1]->data);
            return 2;
        }
        n = args[0]->data;
    }
    env_set("BREAK", n);
    fflush(stdout);
    return 0;
}