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get_next_line_bonus.c
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/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* get_next_line_bonus.c :+: :+: :+: */
/* +:+ +:+ +:+ */
/* By: szerisen <[email protected]> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2023/01/19 19:14:11 by szerisen #+# #+# */
/* Updated: 2023/02/07 18:53:15 by szerisen ### ########.fr */
/* */
/* ************************************************************************** */
#include "get_next_line_bonus.h"
char *joinandfree(char *resultant, char *appender)
{
char *temp;
temp = ft_strjoin(resultant, appender);
free(resultant);
return (temp);
}
char *find_remaining(char *resultant)
{
int i;
int j;
char *remstatic;
i = 0;
while (resultant[i] && resultant[i] != '\n')
i++;
if (!resultant[i])
{
free(resultant);
return (NULL);
}
remstatic = ft_calloc((ft_strlen(resultant) - i + 1), sizeof(char));
i++;
j = 0;
while (resultant[i])
remstatic[j++] = resultant[i++];
free(resultant);
return (remstatic);
}
char *find_line(char *resultant)
{
char *one_line;
int i;
i = 0;
if (!resultant[i])
return (NULL);
while (resultant[i] && resultant[i] != '\n')
i++;
one_line = ft_calloc(i + 2, sizeof(char));
i = 0;
while (resultant[i] && resultant[i] != '\n')
{
one_line[i] = resultant[i];
i++;
}
if (resultant[i] && resultant[i] == '\n')
one_line[i++] = '\n';
return (one_line);
}
char *read_file(int fd, char *resultant)
{
char *appender;
int noofbytes;
if (!resultant)
resultant = ft_calloc(1, 1);
appender = ft_calloc((size_t)BUFFER_SIZE + 1, sizeof(char));
noofbytes = 1;
while (noofbytes > 0)
{
noofbytes = read(fd, appender, BUFFER_SIZE);
if (noofbytes == -1)
{
free(appender);
return (NULL);
}
appender[noofbytes] = 0;
resultant = joinandfree(resultant, appender);
if (ft_strchr(resultant, '\n'))
break ;
}
free(appender);
return (resultant);
}
char *get_next_line(int fd)
{
static char *container_static[256];
char *one_line;
if (fd < 0 || BUFFER_SIZE <= 0)
return (NULL);
if (BUFFER_SIZE > 2147483647)
return (NULL);
container_static[fd] = read_file(fd, container_static[fd]);
if (!container_static[fd])
return (NULL);
one_line = find_line(container_static[fd]);
container_static[fd] = find_remaining(container_static[fd]);
return (one_line);
}
// #include <fcntl.h>
// #include <unistd.h>
// #include <stdio.h>
// int main(){
// int fd1;
// int fd2;
// int fd3;
// fd1 = open("/Users/szerisen/Desktop/simon.txt", O_RDONLY);
// fd2 = open("/Users/szerisen/Desktop/secsimon.txt", O_RDONLY);
// fd3 = open("/Users/szerisen/Desktop/thirsimon.txt", O_RDONLY);
// printf("%s", get_next_line(fd1));
// printf("%s", get_next_line(fd2));
// printf("%s", get_next_line(fd3));
// }