62 lines
1.5 KiB
C
62 lines
1.5 KiB
C
/*
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* Copyright (c) 2020 Dylan Lom <djl@dylanlom.com>
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*
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* Permission to use, copy, modify, and/or distribute this software for any
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* purpose with or without fee is hereby granted.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH
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* REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
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* AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT,
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* INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
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* LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
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* OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
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* PERFORMANCE OF THIS SOFTWARE.
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*/
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#include <poll.h>
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#include <time.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <termios.h>
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#include "util.h"
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const char* argv0;
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void usage() {
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fprintf(stderr, "usage: %s\n", argv0);
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exit(1);
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}
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void printtime(int t) {
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printf("\r%d", t);
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fflush(stdout);
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}
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int main(int argc, char* argv[]) {
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SET_ARGV0();
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if (argc > 0) usage();
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time_t t = 0;
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int pollrs = 0;
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/* Use non-canoncial mode on stdin */
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struct termios old, new;
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tcgetattr(0, &old);
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tcgetattr(0, &new);
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new.c_lflag &= ~(ICANON | ECHO);
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new.c_cc[VMIN] = 0;
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new.c_cc[VTIME] = 0;
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tcsetattr(0, TCSANOW, &new);
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struct pollfd fds[1] = {{ .fd = 0, .events = POLLIN }};
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while (pollrs < 1) {
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printtime(t);
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t++;
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pollrs = poll(fds, 1, 1000);
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}
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puts("\n");
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tcsetattr(0, TCSANOW, &old);
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return 0;
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}
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