109 lines
2.7 KiB
C
109 lines
2.7 KiB
C
/* ************************************************************************** */
|
|
/* */
|
|
/* ::: :::::::: */
|
|
/* get_next_line.c :+: :+: :+: */
|
|
/* +:+ +:+ +:+ */
|
|
/* By: abelghou <abelghou@student.42.fr> +#+ +:+ +#+ */
|
|
/* +#+#+#+#+#+ +#+ */
|
|
/* Created: 2024/07/17 21:31:24 by abelghou #+# #+# */
|
|
/* Updated: 2024/07/24 18:17:55 by abelghou ### ########.fr */
|
|
/* */
|
|
/* ************************************************************************** */
|
|
|
|
#include "../include/get_next_line.h"
|
|
|
|
static char *sort_and_store(int fd, char *buf, char *backup)
|
|
{
|
|
int read_line;
|
|
char *char_temp;
|
|
|
|
read_line = 1;
|
|
while (read_line != 0)
|
|
{
|
|
read_line = read(fd, buf, BUFFER_SIZE);
|
|
if (read_line == -1)
|
|
return (0);
|
|
else if (read_line == 0)
|
|
break ;
|
|
buf[read_line] = '\0';
|
|
if (!backup)
|
|
backup = ft_strdup_g("");
|
|
if (!backup)
|
|
return (NULL);
|
|
char_temp = backup;
|
|
backup = ft_strjoin(char_temp, buf);
|
|
free(char_temp);
|
|
char_temp = NULL;
|
|
if (ft_strchr_gnl (buf, '\n'))
|
|
break ;
|
|
}
|
|
return (backup);
|
|
}
|
|
|
|
static char *extract(char *line)
|
|
{
|
|
size_t count;
|
|
char *backup;
|
|
|
|
count = 0;
|
|
while (line[count] != '\n' && line[count] != '\0')
|
|
count++;
|
|
if (line[count] == '\0' || line[1] == '\0')
|
|
return (0);
|
|
backup = ft_substr(line, count + 1, ft_strlen_g(line) - count);
|
|
if (!backup)
|
|
return (NULL);
|
|
if (*backup == '\0')
|
|
{
|
|
free (backup);
|
|
backup = NULL;
|
|
}
|
|
line[count + 1] = '\0';
|
|
return (backup);
|
|
}
|
|
|
|
char *get_next_line(int fd)
|
|
{
|
|
char *line;
|
|
char *buf;
|
|
char *temp;
|
|
static char *backup;
|
|
|
|
if (fd == -2)
|
|
{
|
|
if (backup)
|
|
free(backup);
|
|
backup = NULL;
|
|
return (NULL);
|
|
}
|
|
if (fd < 0 || BUFFER_SIZE <= 0)
|
|
return (free(backup), backup = NULL, NULL);
|
|
buf = (char *)malloc(sizeof(char) * (BUFFER_SIZE + 1));
|
|
if (!buf)
|
|
return (free(backup), backup = NULL, NULL);
|
|
line = sort_and_store(fd, buf, backup);
|
|
free(buf);
|
|
buf = NULL;
|
|
if (!line)
|
|
return (free(backup), backup = NULL, NULL);
|
|
backup = extract(line);
|
|
temp = ft_strdup_g(line);
|
|
free(line);
|
|
if (!temp)
|
|
return (free(backup), backup = NULL, NULL);
|
|
return (temp);
|
|
}
|
|
|
|
// int main()
|
|
// {
|
|
// int fd;
|
|
// char *line;
|
|
// fd = open("fd.txt", O_RDONLY);
|
|
// while((line = get_next_line(fd)) != NULL)
|
|
// {
|
|
// printf("%s", line);
|
|
// free(line);
|
|
// }
|
|
// line = get_next_line(fd);
|
|
// close(fd);
|
|
// }
|