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/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* ft_getline.c :+: :+: :+: */
/* +:+ +:+ +:+ */
/* By: cacharle <marvin@42.fr> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2020/01/31 10:39:38 by cacharle #+# #+# */
/* Updated: 2020/05/12 21:32:50 by charles ### ########.fr */
/* */
/* ************************************************************************** */
#include "libft.h"
static int st_read_line(int fd, char **line, char *rest)
{
int ret;
char *cut;
static char buf[FT_GETLINE_BUFFER_SIZE + 1] = {'\0'};
while ((ret = read(fd, buf, FT_GETLINE_BUFFER_SIZE)) > 0)
{
buf[ret] = '\0';
if ((cut = ft_strchr(buf, '\n')) != NULL)
{
ft_strcpy(rest, cut + 1);
*cut = '\0';
}
if ((*line = ft_strjoinf(*line, buf, FT_STRJOINF_FST)) == NULL)
return (FT_ERROR);
if (cut != NULL)
return (FT_LINE);
}
if (ret == -1)
free(line);
return (ret);
}
/*
** if has rest:
** if rest has newline:
** push rest until newline in line, shift rest
** return LINE_READ
** else:
** push rest in line
**
** while can read fd in buf
** if buf has newline:
** push buf until newline in line
** push buf after newline in rest
** return LINE_READ
** push buf in line
**
** return FTNL_EOF
*/
int ft_getline(int fd, char **line)
{
char *cut;
static char rest[OPEN_MAX][FT_GETLINE_BUFFER_SIZE + 1] = {{'\0'}};
if (fd < 0 || fd > OPEN_MAX || line == NULL)
return (FT_ERROR);
if (rest[fd][0] == '\0')
{
if ((*line = ft_strdup("")) == NULL)
return (FT_ERROR);
return (st_read_line(fd, line, rest[fd]));
}
if ((cut = ft_strchr(rest[fd], '\n')) != NULL)
{
*cut = '\0';
if ((*line = ft_strdup(rest[fd])) == NULL)
return (FT_ERROR);
ft_strmove(rest[fd], cut + 1);
return (FT_LINE);
}
if ((*line = ft_strdup(rest[fd])) == NULL)
return (FT_ERROR);
rest[fd][0] = '\0';
return (st_read_line(fd, line, rest[fd]));
}
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