49 lines
1.2 KiB
C
49 lines
1.2 KiB
C
/* vi: set sw=4 ts=4: */
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/*
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* Monitor a pipe with a simple progress display.
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*
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* Copyright (C) 2003 by Rob Landley <rob@landley.net>, Joey Hess
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*
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* Licensed under GPLv2 or later, see file LICENSE in this source tree.
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*/
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//config:config PIPE_PROGRESS
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//config: bool "pipe_progress (225 bytes)"
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//config: default y
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//config: help
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//config: Display a dot to indicate pipe activity.
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//applet:IF_PIPE_PROGRESS(APPLET(pipe_progress, BB_DIR_BIN, BB_SUID_DROP))
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//kbuild:lib-$(CONFIG_PIPE_PROGRESS) += pipe_progress.o
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//usage:#define pipe_progress_trivial_usage NOUSAGE_STR
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//usage:#define pipe_progress_full_usage ""
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#include "libbb.h"
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#define PIPE_PROGRESS_SIZE 4096
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/* Read a block of data from stdin, write it to stdout.
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* Activity is indicated by a '.' to stderr
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*/
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int pipe_progress_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
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int pipe_progress_main(int argc UNUSED_PARAM, char **argv UNUSED_PARAM)
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{
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char buf[PIPE_PROGRESS_SIZE];
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time_t t = time(NULL);
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int len;
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while ((len = safe_read(STDIN_FILENO, buf, PIPE_PROGRESS_SIZE)) > 0) {
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time_t new_time = time(NULL);
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if (new_time != t) {
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t = new_time;
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bb_putchar_stderr('.');
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}
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full_write(STDOUT_FILENO, buf, len);
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}
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bb_putchar_stderr('\n');
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return 0;
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}
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