1/* vi: set sw=4 ts=4: */
2/*
3 * Monitor a pipe with a simple progress display.
4 *
5 * Copyright (C) 2003 by Rob Landley <rob@landley.net>, Joey Hess
6 *
7 * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
8 */
9
10#include "libbb.h"
11
12#define PIPE_PROGRESS_SIZE 4096
13
14/* Read a block of data from stdin, write it to stdout.
15 * Activity is indicated by a '.' to stderr
16 */
17int pipe_progress_main(int argc, char **argv);
18int pipe_progress_main(int argc, char **argv)
19{
20	RESERVE_CONFIG_BUFFER(buf, PIPE_PROGRESS_SIZE);
21	time_t t = time(NULL);
22	size_t len;
23
24	while ((len = fread(buf, 1, PIPE_PROGRESS_SIZE, stdin)) > 0) {
25		time_t new_time = time(NULL);
26		if (new_time != t) {
27			t = new_time;
28			fputc('.', stderr);
29		}
30		fwrite(buf, len, 1, stdout);
31	}
32
33	fputc('\n', stderr);
34
35	if (ENABLE_FEATURE_CLEAN_UP)
36		RELEASE_CONFIG_BUFFER(buf);
37
38	return 0;
39}
40