busybox/debianutils/pipe_progress.c

/* vi: set sw=4 ts=4: */
/*
 * Monitor a pipe with a simple progress display.
 *
 * Copyright (C) 2003 by Rob Landley <rob@landley.net>, Joey Hess
 *
 * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
 */

#include "busybox.h"
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <time.h>

#define PIPE_PROGRESS_SIZE 4096

/* Read a block of data from stdin, write it to stdout.
 * Activity is indicated by a '.' to stderr
 */
int pipe_progress_main(int argc, char **argv)
{
	RESERVE_CONFIG_BUFFER(buf, PIPE_PROGRESS_SIZE);
	time_t t = time(NULL);
	size_t len;

	while ((len = fread(buf, 1, PIPE_PROGRESS_SIZE, stdin)) > 0) {
		time_t new_time = time(NULL);
		if (new_time != t) {
			t = new_time;
			fputc('.', stderr);
		}
		fwrite(buf, len, 1, stdout);
	}

	fputc('\n', stderr);

	if (ENABLE_FEATURE_CLEAN_UP)
		RELEASE_CONFIG_BUFFER(buf);

	return 0;
}
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 "busybox.h"
11	#include <stdio.h>
12	#include <stdlib.h>
13	#include <unistd.h>
14	#include <time.h>
15
16	#define PIPE_PROGRESS_SIZE 4096
17
18	/* Read a block of data from stdin, write it to stdout.
19	* Activity is indicated by a '.' to stderr
20	*/
21	int pipe_progress_main(int argc, char **argv)
22	{
23	RESERVE_CONFIG_BUFFER(buf, PIPE_PROGRESS_SIZE);
24	time_t t = time(NULL);
25	size_t len;
26
27	while ((len = fread(buf, 1, PIPE_PROGRESS_SIZE, stdin)) > 0) {
28	time_t new_time = time(NULL);
29	if (new_time != t) {
30	t = new_time;
31	fputc('.', stderr);
32	}
33	fwrite(buf, len, 1, stdout);
34	}
35
36	fputc('\n', stderr);
37
38	if (ENABLE_FEATURE_CLEAN_UP)
39	RELEASE_CONFIG_BUFFER(buf);
40
41	return 0;
42	}