ladybird/Userland/more.cpp
2019-08-01 11:39:41 +02:00

47 lines
855 B
C++

#include <fcntl.h>
#include <stdio.h>
#include <sys/ioctl.h>
#include <unistd.h>
static int key_fd;
void wait_for_key()
{
printf("\033[7m--[ more ]--\033[0m");
fflush(stdout);
char dummy;
read(key_fd, &dummy, 1);
printf("\n");
}
int main(int argc, char** argv)
{
(void)argc;
(void)argv;
key_fd = open(ttyname(1), O_RDONLY);
if (key_fd < 0) {
perror("open");
return 1;
}
struct winsize ws;
ioctl(1, TIOCGWINSZ, &ws);
unsigned lines_printed = 0;
while (!feof(stdin)) {
char buffer[BUFSIZ];
auto* str = fgets(buffer, sizeof(buffer), stdin);
if (!str)
break;
printf("%s", str);
++lines_printed;
if ((lines_printed % (ws.ws_row - 1)) == 0) {
wait_for_key();
}
}
close(key_fd);
return 0;
}