toys/count.c

/* vi: set sw=4 ts=4:
 *
 * count.c - Progress indicator from stdin to stdout
 *
 * Copyright 2002 Rob Landley <rob@landley.net>
 *
 * Not in SUSv3.

USE_COUNT(NEWTOY(count, NULL, TOYFLAG_USR|TOYFLAG_BIN))

config COUNT
	bool "count"
	default y
	help
	  usage: count

	  Copy stdin to stdout, displaying simple progress indicator to stderr.
*/

#include "toys.h"

void count_main(void)
{
	uint64_t size = 0;
	int len;
	char buf[32];

	for (;;) {
		len = xread(0, toybuf, sizeof(toybuf));
		if (!len) break;
		size += len;
		xwrite(1, toybuf, len);
		xwrite(2, buf, sprintf(buf, "%"PRIu64" bytes\r", size));
	}
	xwrite(2, "\n", 1);
}