Split function in C

split.c

static size_t	count_segment(char const *s, char c)
{
    size_t	counter = 0;
    int		i = 0;
    while (s[i])
    {
        if (s[i] == c)
        {
            i++;
            continue;
        }
        counter++;
        while (s[i] && s[i] != c)
            i++;
    }
    return counter;
}

char			**split(char const *s, char c)
{
    char	**strs;
    size_t	tab_counter;
    size_t	i;
    size_t	j;

    if (s == NULL)
        return (NULL);
    tab_counter = count_segment(s, c);
    if ((strs = (char**)malloc(sizeof(char*) * (tab_counter + 1))) == NULL)
        return (NULL);
    tab_counter = 0;
    j = -1;
    while (s[++j])
    {
        if (s[j] == c)
            continue;
        i = 0;
        while (s[j + i] && s[j + i] != c)
            i++;
        if ((strs[tab_counter++] = strndup(&s[j], i)) == NULL)
            return NULL;
        j += i - 1;
    }
    strs[tab_counter] = NULL;
    return strs;
}