48 lines
892 B
C
48 lines
892 B
C
#define _XOPEN_SOURCE 500
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#include <stdlib.h>
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#include <stdio.h>
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#include <unistd.h>
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#include "arg.h"
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char *argv0;
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void usage() {
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fprintf(stderr, "usage: %s [-t usec] [-f]\n", argv0);
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exit(EXIT_FAILURE);
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}
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int main(int argc, char *argv[]) {
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char buffer;
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size_t nread;
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useconds_t useconds = 1000000; // default 1 second
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unsigned int flush = 0;
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ARGBEGIN {
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case 't':
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useconds = atoi(EARGF(usage()));
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break;
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case 'f':
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flush = 1;
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break;
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default:
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usage();
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} ARGEND;
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while ((nread = fread(&buffer, 1, sizeof buffer, stdin)) > 0) {
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usleep(useconds);
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if (fwrite(&buffer, 1, nread, stdout) != nread) {
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fprintf(stderr, "stdout: write error");
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exit(EXIT_FAILURE);
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}
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if (flush) {
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fflush(stdout);
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}
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}
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if (ferror(stdin)) {
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fprintf(stderr, "stdin: read error");
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exit(EXIT_FAILURE);
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}
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return EXIT_SUCCESS;
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}
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