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/* ************************************************************************** */
/* LE - / */
/* / */
/* ft_history.c .:: .:/ . .:: */
/* +:+:+ +: +: +:+:+ */
/* By: rbousset <marvin@le-101.fr> +:+ +: +: +:+ */
/* #+# #+ #+ #+# */
/* Created: 2019/10/30 20:36:05 by rbousset #+# ## ## #+# */
/* Updated: 2019/10/30 20:36:07 by rbousset ### #+. /#+ ###.fr */
/* / */
/* / */
/* ************************************************************************** */
#include <libft.h>
#include <minishell.h>
#include <stddef.h>
#include <stdlib.h>
#include <stdio.h>
#include <fcntl.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/stat.h>
static size_t
ft_count_lines(int fd)
{
char c;
size_t lines;
lines = 0;
while (read(fd, &c, 1) > 0)
if (c == '\n')
lines++;
return (lines);
}
static size_t
ft_last_line_len(int fd, size_t lines_max)
{
char c;
size_t len;
size_t lines;
len = 0;
lines = 0;
while (read(fd, &c, 1) > 0)
{
if (c == '\n')
lines++;
if (lines == lines_max - 1)
break ;
}
while (read(fd, &c, 1) > 0)
len++;
return (len);
}
char
*ft_get_last_line(void)
{
char *buff;
char c;
int fd;
size_t lines;
size_t i;
i = 0;
if ((fd = open("joe-sh_history", O_CREAT | O_RDWR, 0644)) == -1)
return (NULL);
lines = ft_count_lines(fd);
close(fd);
if ((fd = open("joe-sh_history", O_CREAT | O_RDWR, 0644)) == -1)
return (NULL);
if (!(buff = (char*)malloc(ft_last_line_len(fd, lines) * sizeof(char))))
return (NULL);
close(fd);
if ((fd = open("joe-sh_history", O_CREAT | O_RDWR, 0644)) == -1)
return (NULL);
while (read(fd, &c, 1) > 0)
{
if (c == '\n')
i++;
if (i == lines - 1)
break ;
}
i = 0;
while (read(fd, &c, 1) > 0)
{
buff[i] = c;
i++;
}
buff[i - 1] = '\0';
close(fd);
return (buff);
}
int
ft_history(char *arg)
{
char *buff;
int fd;
struct stat info;
if (!*arg)
return (0);
if ((fd = open("joe-sh_history", O_CREAT | O_RDWR, 0644)) == -1)
return (1);
fstat(fd, &info);
if (!(buff = (char*)malloc(info.st_size * sizeof(char))))
return (0);
read(fd, buff, info.st_size);
ft_putendl_fd(arg, fd);
free(buff);
close(fd);
return (0);
}
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