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get_next_line.c
157 lines (137 loc) · 3.51 KB
/
get_next_line.c
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/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* get_next_line.c :+: :+: :+: */
/* +:+ +:+ +:+ */
/* By: aziabkin <marvin@42.fr> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2018/04/26 15:34:36 by aziabkin #+# #+# */
/* Updated: 2018/05/04 15:37:53 by aziabkin ### ########.fr */
/* */
/* ************************************************************************** */
#include "get_next_line.h"
#include <stdio.h> //DELETE
static int write_to_line(char **line, t_gnl *cur) /////
{
char *tmp;
if (*(cur->str))
{
if (ft_strchr(cur->str, '\n'))
{
*line = ft_strsub(cur->str, 0, \
ft_strchr(cur->str, '\n') - cur->str);
// printf(" vfvf %s\n", ft_strchr(cur->str, '\n'));
// printf(" %li\n", ft_strchr(cur->str, '\n') - cur->str);
// printf("//// %s\n", *line);
tmp = cur->str;
cur->str = ft_strdup(cur->str + \
(ft_strchr(cur->str, '\n') - cur->str) + 1);
// printf(" 11%s\n", cur->str);
// printf(" %li\n", ft_strchr(cur->str, '\n') - cur->str);
ft_strdel(&tmp);
}
else
{
*line = cur->str;
cur->str = ft_strnew(0);
}
return (1);
}
return (0);
}
static void reader_and_save(int fd, char *buf, t_gnl *cur) //////
{
int bytes;
char *tmp;
while (!(ft_strchr(cur->str, '\n')) \
&& (bytes = read(fd, buf, BUFF_SIZE)) > 0)
{
tmp = cur->str;
buf[bytes] = '\0';
cur->str = ft_strjoin(cur->str, buf);
//printf("//// %s\n", cur->str);
ft_strdel(&tmp);
}
}
static t_gnl *check_fd(t_gnl **lst, int fd)
{
t_gnl *temp;
temp = *lst;
while (temp)
{
if (temp->fd == fd)
return (temp);
temp = temp->next;
}
if (!(temp = (t_gnl *)malloc(sizeof(*temp))))
return (NULL);
temp->str = ft_strnew(0);
temp->fd = fd;
temp->next = *lst;
*lst = temp;
return (temp);
}
int get_next_line(const int fd, char **line)
{
char buf[BUFF_SIZE + 1];
t_gnl *cur;
static t_gnl *lstsave;
if (read(fd, buf, 0) < 0 || !line || BUFF_SIZE < 1)
return (-1);
cur = check_fd(&lstsave, fd);
reader_and_save(fd, buf, cur); ////
return (write_to_line(line, cur)); //////
}
int main(int argc, char const **argv)
{
char *str = NULL;
int fd;
int fd2;
int fd3;
if (argc >= 2)
{
if ((fd = open(argv[1], O_RDONLY)) == -1)
{
ft_putendl("error");
return (0);
}
if ((fd2 = open(argv[2], O_RDONLY)) == -1)
{
ft_putendl("error");
return (0);
}
if ((fd3 = open(argv[3], O_RDONLY)) == -1)
{
ft_putendl("error");
return (0);
}
// while (get_next_line(fd, &str) > 0)
// {
// printf("%s\n", str);
// ft_strdel(&str);
// }
get_next_line(fd, &str);
printf("%s\n", str);
ft_strdel(&str);
get_next_line(fd2, &str);
printf("%s\n", str);
ft_strdel(&str);
get_next_line(fd3, &str);
printf("%s\n", str);
ft_strdel(&str);
get_next_line(fd, &str);
printf("%s\n", str);
ft_strdel(&str);
get_next_line(fd2, &str);
printf("%s\n", str);
ft_strdel(&str);
get_next_line(fd, &str);
printf("%s\n", str);
ft_strdel(&str);
get_next_line(fd3, &str);
printf("%s\n", str);
ft_strdel(&str);
system("leaks gnl");
}
return (0);
}