/* 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 (275 bytes)" //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; }