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/* 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 source tree.
*/
//config:config PIPE_PROGRESS
//config: bool "pipe_progress"
//config: default y
//config: help
//config: Display a dot to indicate pipe activity.
//applet:IF_PIPE_PROGRESS(APPLET(pipe_progress, BB_DIR_BIN, BB_SUID_DROP))
//kbuild:lib-$(CONFIG_PIPE_PROGRESS) += pipe_progress.o
//usage:#define pipe_progress_trivial_usage NOUSAGE_STR
//usage:#define pipe_progress_full_usage ""
#include "libbb.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) MAIN_EXTERNALLY_VISIBLE;
int pipe_progress_main(int argc UNUSED_PARAM, char **argv UNUSED_PARAM)
{
char buf[PIPE_PROGRESS_SIZE];
time_t t = time(NULL);
int len;
while ((len = safe_read(STDIN_FILENO, buf, PIPE_PROGRESS_SIZE)) > 0) {
time_t new_time = time(NULL);
if (new_time != t) {
t = new_time;
bb_putchar_stderr('.');
}
full_write(STDOUT_FILENO, buf, len);
}
bb_putchar_stderr('\n');
return 0;
}
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