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