Kinou/get_next_line
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kinou-p 2020-12-14 21:14:12 +01:00
parent ef4fd82f0b
commit 390d1bbcc8
2 changed files with 186 additions and 0 deletions
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145
get_next_line.c Normal file
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/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* get_next_line.c :+: :+: :+: */
/* +:+ +:+ +:+ */
/* By: apommier <alexpomms@student.42.fr> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2020/12/14 02:40:53 by apommier #+# #+# */
/* Updated: 2020/12/14 21:13:09 by apommier ### ########.fr */
/* */
/* ************************************************************************** */
#include <stdlib.h>
#include <unistd.h>
int ft_strlen(char *s1)
{
int i;
i = 0;
while (s1[i])
i++;
return (i);
}
char *ft_strjoin(char *s1, char *s2)
{
char *dest;
int i;
int j;
i = 0;
j = 0;
dest = (char*)malloc(sizeof(char) * (ft_strlen(s1) + ft_strlen(s2) + 1));
if (dest == 0)
return (0);
while (s1[i])
{
dest[j] = s1[i];
j++;
i++;
}
i = 0;
while (s2[i])
{
dest[j] = s2[i];
j++;
i++;
}
dest[j] = 0;
return (dest);
}
int ft_free(char **s1; char **s2; char **s3)
{
if (*s1)
free(*s1);
if (*s2)
free(*s2);
if (*s3)
free(*s3);
return (0);
}
static char *up_save(char *save, int index, int fd)
{
char *dest;
char *delete;
int i;
delete = save;
if (index)
save += index;
if (!(dest = (char*)malloc(BUFFER_SIZE)))
{
ft_free(dest, delete, save);
return (0);
}
i = read(fd, dest, BUFFER_SIZE);
if (!i)
{
ft_free(dest, delete, save);
return (0);
}
if (!(save = ft_strjoin(save, dest)))
{
ft_free(dest, delete, save);
return (0);
}
free(delete);
return (save);
}
int is_line(char *save, char **line)
{
int i;
i = 0;
if (save == 0)
return (0);
while (save[i] && i < BUFFER_SIZE)
{
if (save[i] == '\n')
{
save[i] = 0;
return (1);
}
i++;
}
if (save[i] == 0)
{
return (2);
*line = save;
}
return (0);
}
int get_next_line(int fd, char **line)
{
static char *save;
int i;
if (fd < 0 || !line || !BUFFER_SIZE)
return (-1);
if (is_line(save, line))
{
while (save[i] != 0)
i++;
if (!(save = up_save(save, i, fd)))
return (-1);
}
else
{
if (!(save = up_save(save, 0, fd)))
return (-1);
}
while (!is_line(save, line))
{
if (is_line(save, line) == 2)
return (0);
if (!(save = up_save(save, 0, fd)))
return (-1);
}
*line = save;
return (1);
}

41
get_next_line_utils.c Normal file
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/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* get_next_line_utils.c :+: :+: :+: */
/* +:+ +:+ +:+ */
/* By: apommier <alexpomms@student.42.fr> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2020/12/14 06:05:54 by apommier #+# #+# */
/* Updated: 2020/12/14 06:06:31 by apommier ### ########.fr */
/* */
/* ************************************************************************** */
#include "get_next_line.h"
char *ft_strjoin(char const *s1, char const *s2)
{
char *dest;
int i;
int j;
i = 0;
j = 0;
dest = (char*)malloc(sizeof(char) * (ft_strlen(s1) + ft_strlen(s2) + 1));
if (dest == 0)
return (0);
while (s1[i])
{
dest[j] = s1[i];
j++;
i++;
}
i = 0;
while (s2[i])
{
dest[j] = s2[i];
j++;
i++;
}
dest[j] = 0;
return (dest);
}