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get_next_line_bonus.c
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get_next_line_bonus.c
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/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* get_next_line_bonus.c :+: :+: :+: */
/* +:+ +:+ +:+ */
/* By: belguabd <belguabd@student.42.fr> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2023/12/13 01:41:08 by belguabd #+# #+# */
/* Updated: 2023/12/15 11:41:31 by belguabd ### ########.fr */
/* */
/* ************************************************************************** */
#include "get_next_line_bonus.h"
static char *get_new_save(char *save)
{
char *new_save;
int i;
int j;
i = 0;
j = 0;
while (save[i] != '\n' && save[i])
i++;
if (save[i] == '\n')
i++;
while (!save[i])
return (free(save), NULL);
new_save = (char *)malloc(ft_strlen(save) - i + 1);
if (!new_save)
return (free(save), save = NULL, NULL);
while (save[i])
new_save[j++] = save[i++];
new_save[j] = '\0';
return (free(save), save = NULL, new_save);
}
static char *get_newline(char *save)
{
char *line;
int j;
int i;
if (!save[0])
return (NULL);
i = 0;
while (save[i] != '\n' && save[i])
i++;
if (save[i] == '\n')
i++;
line = (char *)malloc((i + 1) * sizeof(char));
if (!line)
return (NULL);
j = 0;
while (save[j] != '\n' && save[j])
{
line[j] = save[j];
j++;
}
if (save[j] == '\n')
line[j++] = '\n';
line[j] = '\0';
return (line);
}
static bool check_newline(char *str)
{
int i;
i = 0;
while (str[i])
{
if (str[i] == '\n')
return (true);
i++;
}
return (false);
}
static char *read_line(int fd, char *save)
{
char *buffer;
int stop_read;
buffer = malloc((size_t)(BUFFER_SIZE) + 1);
if (!buffer)
return (free(save), save = NULL, NULL);
stop_read = 1;
while (stop_read > 0)
{
stop_read = read(fd, buffer, BUFFER_SIZE);
if (stop_read == -1)
return (free(save), free(buffer), NULL);
buffer[stop_read] = '\0';
save = ft_strjoin(save, buffer);
if (!save)
break ;
if (check_newline(save))
break ;
}
free(buffer);
return (save);
}
char *get_next_line(int fd)
{
static char *save[OPEN_MAX];
char *line;
if (fd < 0 || BUFFER_SIZE <= 0 || BUFFER_SIZE > INT_MAX)
return (0);
if (!save[fd])
save[fd] = ft_strdup("");
if (!save[fd])
return (NULL);
save[fd] = read_line(fd, save[fd]);
if (!save[fd])
return (NULL);
line = get_newline(save[fd]);
if (!line)
return (free(save[fd]), save[fd] = NULL, NULL);
save[fd] = get_new_save(save[fd]);
return (line);
}