99 lines
2.5 KiB
C
99 lines
2.5 KiB
C
/* ************************************************************************** */
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/* */
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/* ::: :::::::: */
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/* get_next_line.c :+: :+: :+: */
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/* +:+ +:+ +:+ */
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/* By: tmaze <tmaze@student.42.fr> +#+ +:+ +#+ */
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/* +#+#+#+#+#+ +#+ */
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/* Created: 2018/04/24 18:08:15 by tmaze #+# #+# */
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/* Updated: 2019/03/16 15:53:27 by tmaze ### ########.fr */
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/* */
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/* ************************************************************************** */
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#include "libft.h"
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static char **get_buff(const int fd, t_list **lst)
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{
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t_list *tmp;
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tmp = *lst;
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while (tmp)
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{
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if (tmp->content_size == (size_t)fd)
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return ((char**)&tmp->content);
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tmp = tmp->next;
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}
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if ((tmp = ft_lstnew("\0", fd)) == NULL)
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return (NULL);
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ft_lstadd(lst, tmp);
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return (get_buff(fd, lst));
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}
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static char *supercat(char **s1, char **s2)
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{
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char *tmp;
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if ((tmp = ft_strjoin(*s1, *s2)) == NULL)
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return (NULL);
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ft_strdel(s1);
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ft_strclr(*s2);
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*s1 = tmp;
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return (*s1);
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}
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static int check_buff(char **buff, char **line)
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{
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int ret;
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ret = 1;
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if (buff != NULL && (*buff == NULL || ft_strlen(*buff) == 0))
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ret = 0;
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else if ((*line = ft_strdup(*buff)) == NULL)
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ret = -1;
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ft_strclr(*buff);
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return (ret);
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}
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static int read_gnl(const int fd, char **buff, char **line)
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{
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char *tmp;
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int ret;
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if ((tmp = ft_strnew(BUFF_SIZE)) == NULL)
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return (-1);
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while (ft_strrnchr(*buff, '\n', BUFF_SIZE) == NULL
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&& (ret = read(fd, tmp, BUFF_SIZE)) > 0)
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if (supercat(buff, &tmp) == NULL)
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{
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ft_strdel(&tmp);
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return (-1);
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}
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ft_strdel(&tmp);
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if (buff != NULL && *buff != NULL
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&& ft_strrnchr(*buff, '\n', BUFF_SIZE) != NULL)
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return (get_next_line(fd, line));
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else
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return (check_buff(buff, line));
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}
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int get_next_line(const int fd, char **line)
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{
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static t_list *lst = NULL;
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char **buff;
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char *tmp;
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tmp = NULL;
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if (fd < 0 || read(fd, tmp, 0) == -1 || line == NULL)
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return (-1);
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if ((buff = get_buff(fd, &lst)) == NULL)
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return (-1);
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tmp = ft_strchr(*buff, '\n');
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if (tmp != NULL)
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{
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*line = ft_strndup(*buff, tmp - *buff);
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ft_memmove(*buff, &tmp[1], ft_strlen(&tmp[1]) + 1);
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return (1);
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}
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return (read_gnl(fd, buff, line));
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}
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