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#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <unistd.h>
#include <stdlib.h>
#include "terminal.h"
char buf[4096];
void copy_data(int to, int from)
{
ssize_t bytes = read(from, buf, sizeof(buf));
while (bytes > 0)
{
ssize_t written = write(to, buf, bytes);
if (written == -1) {
exit(1);
}
bytes -= written;
}
}
int main(int argc, char **argv)
{
//these will block so order is important
int input_fd = open(INPUT_PATH, O_WRONLY);
int output_fd = open(OUTPUT_PATH, O_RDONLY);
fd_set read_fds;
FD_ZERO(&read_fds);
for (;;)
{
FD_SET(STDIN_FILENO, &read_fds);
FD_SET(output_fd, &read_fds);
select(output_fd+1, &read_fds, NULL, NULL, NULL);
if (FD_ISSET(STDIN_FILENO, &read_fds)) {
copy_data(input_fd, STDIN_FILENO);
}
if (FD_ISSET(output_fd, &read_fds)) {
copy_data(STDOUT_FILENO, output_fd);
}
}
return 0;
}
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