1 #include <stdio.h> 2 #include <string.h> 3 #include <unistd.h> 4 #include <uv.h> 5 6 uv_loop_t *loop; 7 uv_tty_t tty; 8 uv_timer_t tick; 9 uv_write_t write_req; 10 int width, height; 11 int pos = 0; 12 char *message = " Hello TTY "; 13 14 void update(uv_timer_t *req) { 15 char data[500]; 16 17 uv_buf_t buf; 18 buf.base = data; 19 buf.len = sprintf(data, "\033[2J\033[H\033[%dB\033[%luC\033[42;37m%s", 20 pos, 21 (unsigned long) (width-strlen(message))/2, 22 message); 23 uv_write(&write_req, (uv_stream_t*) &tty, &buf, 1, NULL); 24 25 pos++; 26 if (pos > height) { 27 uv_tty_reset_mode(); 28 uv_timer_stop(&tick); 29 } 30 } 31 32 int main() { 33 loop = uv_default_loop(); 34 35 uv_tty_init(loop, &tty, STDOUT_FILENO, 0); 36 uv_tty_set_mode(&tty, 0); 37 38 if (uv_tty_get_winsize(&tty, &width, &height)) { 39 fprintf(stderr, "Could not get TTY information\n"); 40 uv_tty_reset_mode(); 41 return 1; 42 } 43 44 fprintf(stderr, "Width %d, height %d\n", width, height); 45 uv_timer_init(loop, &tick); 46 uv_timer_start(&tick, update, 200, 200); 47 return uv_run(loop, UV_RUN_DEFAULT); 48 } 49