89 lines
2.3 KiB
C
89 lines
2.3 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: jhalford <jack@crans.org> +#+ +:+ +#+ */
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/* +#+#+#+#+#+ +#+ */
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/* Created: 2016/11/15 13:12:06 by jhalford #+# #+# */
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/* Updated: 2017/03/21 15:43:51 by jhalford ### ########.fr */
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/* */
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/* ************************************************************************** */
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#include "get_next_line.h"
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static int ft_fdcmp(t_save *a, int *b)
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{
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return (a->fd - *b);
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}
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static void ft_gnlfree(void *a, size_t size)
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{
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(void)size;
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ft_strdel(&((t_save*)a)->str);
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free(a);
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}
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static t_list *ft_newfd(t_list **head, int fd)
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{
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t_save new;
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new.fd = fd;
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new.str = ft_memalloc((BUFF_SIZE > 0 ? BUFF_SIZE : 0) + 1);
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ft_lstadd(head, ft_lstnew(&new, sizeof(t_save)));
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return (*head);
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}
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static int ft_loop_read(int fd, char **line, char *save)
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{
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char buf[BUFF_SIZE + 1];
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char *pos;
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char *tmp;
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int ret;
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while ((ret = read(fd, buf, BUFF_SIZE)) > 0)
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{
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buf[ret] = 0;
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tmp = *line;
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if ((pos = ft_strchr(buf, '\n')))
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{
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ft_strcpy(save, pos + 1);
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*pos = 0;
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}
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if (!(*line = ft_strjoin(*line, buf)))
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return (-1);
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ft_strdel(&tmp);
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if (pos)
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return (1);
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}
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if (ret < 0)
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return (-1);
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return (**line ? 1 : 0);
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}
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int get_next_line(int const fd, char **line)
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{
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static t_list *head;
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t_list *tmp;
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char *pos;
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char *save;
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int ret;
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if (fd < 0 || !line)
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return (-1);
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if (!(tmp = ft_lst_find(head, (void *)&fd, &ft_fdcmp)))
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tmp = ft_newfd(&head, fd);
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save = ((t_save*)tmp->content)->str;
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if (!(*line = ft_strdup(save)))
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return (-1);
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ft_bzero(save, BUFF_SIZE + 1);
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if ((pos = ft_strchr(*line, '\n')))
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{
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ft_strcpy(save, pos + 1);
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*pos = 0;
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return (1);
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}
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if (!(ret = ft_loop_read(fd, line, save)))
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ft_lst_delif(&head, (int *)&fd, ft_fdcmp, &ft_gnlfree);
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return (ret);
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}
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