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/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* io.c :+: :+: :+: */
/* +:+ +:+ +:+ */
/* By: cacharle <charles.cabergs@gmail.com> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2019/07/15 19:05:32 by cacharle #+# #+# */
/* Updated: 2019/07/19 06:43:50 by cacharle ### ########.fr */
/* */
/* ************************************************************************** */
#include <unistd.h>
#include <fcntl.h>
#include "include.h"
int read_in_buf(int fildes, char buf[BUF_SIZE])
{
return (read(fildes, buf, BUF_SIZE));
}
int write_buf(char buf[BUF_SIZE], int size)
{
return (write(STDOUT_FILENO, buf, size));
}
int read_write_fildes(int fildes)
{
int size;
char buf[BUF_SIZE];
size = BUF_SIZE;
if (fildes == STDIN_FILENO)
{
read_stdin();
return (0);
}
while (size != 0)
{
if ((size = read_in_buf(fildes, buf)) < 0)
return (-1);
if (write_buf(buf, size) == -1)
return (-1);
}
return (0);
}
void read_stdin(void)
{
char buf[32];
while (read(STDIN_FILENO, buf, 1))
write(STDOUT_FILENO, buf, 1);
}
int print_file(char *filename)
{
int fildes;
if (filename[0] == '-')
fildes = STDIN_FILENO;
else if ((fildes = open(filename, O_RDONLY)) < 0)
return (-1);
if (read_write_fildes(fildes) == -1)
return (-1);
if (close(fildes) == -1)
return (-1);
return (0);
}
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