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swaygrab: Print usage and exit on unknown options
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1 changed files with 12 additions and 0 deletions
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@ -135,6 +135,15 @@ int main(int argc, char **argv) {
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{0, 0, 0, 0}
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};
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const char *usage =
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"Usage: swaygrab [options] <output> [file]\n"
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"\n"
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" -c, --capture Capture video.\n"
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" -v, --version Show the version number and quit.\n"
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" -s, --socket <socket> Use the specified socket.\n"
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" -R, --rate <rate> Specify framerate (default: 30)\n"
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" -r, --raw Write raw rgba data to stdout.\n";
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int c;
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while (1) {
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int option_index = 0;
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@ -165,6 +174,9 @@ int main(int argc, char **argv) {
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#endif
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exit(EXIT_SUCCESS);
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break;
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default:
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fprintf(stderr, "%s", usage);
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exit(EXIT_FAILURE);
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}
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}
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