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/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* main.c :+: :+: :+: */
/* +:+ +:+ +:+ */
/* By: cacharle <charles.cabergs@gmail.com> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2019/07/11 18:06:43 by cacharle #+# #+# */
/* Updated: 2019/07/19 06:33:07 by cacharle ### ########.fr */
/* */
/* ************************************************************************** */
#include <unistd.h>
#include <fcntl.h>
#include <stdio.h>
#define BUFFER_SIZE 1024
int read_write_file(int fildes)
{
char buf[BUFFER_SIZE];
int read_size;
while ((read_size = read(fildes, buf, BUFFER_SIZE)) != 0)
{
if (read_size < 0)
return (-1);
write(STDOUT_FILENO, buf, read_size);
}
return (0);
}
int main(int argc, char **argv)
{
int fildes;
if (argc == 1)
{
write(STDERR_FILENO, "File name missing.\n", 20);
return (1);
}
else if (argc > 2)
{
write(STDERR_FILENO, "Too many arguments.\n", 21);
return (1);
}
if ((fildes = open(argv[1], O_RDONLY)) < 0)
{
write(STDERR_FILENO, "Cannot read file.\n", 18);
return (1);
}
if ((read_write_file(fildes)) < 0)
{
write(STDERR_FILENO, "Cannot read file.\n", 18);
return (1);
}
close(fildes);
return (0);
}
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