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1 #include <stdio.h>
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2
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3 #include <uv.h>
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4
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5 uv_loop_t *loop;
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6 uv_fs_t stdin_watcher;
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7 uv_idle_t idler;
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8 char buffer[1024];
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9
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10 void crunch_away(uv_idle_t* handle) {
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11 // Compute extra-terrestrial life
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12 // fold proteins
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13 // computer another digit of PI
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14 // or similar
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15 fprintf(stderr, "Computing PI...\n");
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16 // just to avoid overwhelming your terminal emulator
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17 uv_idle_stop(handle);
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18 }
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19
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20 void on_type(uv_fs_t *req) {
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21 if (stdin_watcher.result > 0) {
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22 buffer[stdin_watcher.result] = '\0';
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23 printf("Typed %s\n", buffer);
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24
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25 uv_buf_t buf = uv_buf_init(buffer, 1024);
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26 uv_fs_read(loop, &stdin_watcher, 0, &buf, 1, -1, on_type);
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27 uv_idle_start(&idler, crunch_away);
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28 }
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29 else if (stdin_watcher.result < 0) {
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30 fprintf(stderr, "error opening file: %s\n", uv_strerror(req->result));
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31 }
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32 }
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33
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34 int main() {
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35 loop = uv_default_loop();
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36
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37 uv_idle_init(loop, &idler);
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38
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39 uv_buf_t buf = uv_buf_init(buffer, 1024);
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40 uv_fs_read(loop, &stdin_watcher, 0, &buf, 1, -1, on_type);
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41 uv_idle_start(&idler, crunch_away);
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42 return uv_run(loop, UV_RUN_DEFAULT);
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43 }
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