270 lines
8.2 KiB
C
270 lines
8.2 KiB
C
/*
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* Copyright (c) 1999 Theo de Raadt. All rights reserved.
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* Copyright (c) 1999 Aaron Campbell. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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/*
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* Copyright (c) 1997-2003 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Luke Mewburn.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Jason R. Thorpe of the Numerical Aerospace Simulation Facility,
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* NASA Ames Research Center.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the NetBSD
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* Foundation, Inc. and its contributors.
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* 4. Neither the name of The NetBSD Foundation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "includes.h"
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RCSID("$OpenBSD: progressmeter.c,v 1.6 2003/04/07 21:58:05 millert Exp $");
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#ifdef HAVE_LIBGEN_H
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#include <libgen.h>
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#endif
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#include "atomicio.h"
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#include "progressmeter.h"
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/* Number of seconds before xfer considered "stalled". */
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#define STALLTIME 5
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/* alarm() interval for updating progress meter. */
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#define PROGRESSTIME 1
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/* Signal handler used for updating the progress meter. */
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static void update_progress_meter(int);
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/* Returns non-zero if we are the foreground process. */
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static int foregroundproc(void);
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/* Returns width of the terminal (for progress meter calculations). */
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static int get_tty_width(void);
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/* Visual statistics about files as they are transferred. */
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static void draw_progress_meter(void);
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/* Time a transfer started. */
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static struct timeval start;
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/* Number of bytes of current file transferred so far. */
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static volatile off_t *statbytes;
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/* Total size of current file. */
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static off_t totalbytes;
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/* Name of current file being transferred. */
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static char *curfile;
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/* Time of last update. */
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static struct timeval lastupdate;
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/* Size at the time of the last update. */
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static off_t lastsize;
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void
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start_progress_meter(char *file, off_t filesize, off_t *counter)
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{
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if ((curfile = basename(file)) == NULL)
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curfile = file;
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totalbytes = filesize;
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statbytes = counter;
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(void) gettimeofday(&start, (struct timezone *) 0);
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lastupdate = start;
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lastsize = 0;
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draw_progress_meter();
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signal(SIGALRM, update_progress_meter);
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alarm(PROGRESSTIME);
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}
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void
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stop_progress_meter()
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{
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alarm(0);
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draw_progress_meter();
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if (foregroundproc() != 0)
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atomicio(write, fileno(stdout), "\n", 1);
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}
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static void
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update_progress_meter(int ignore)
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{
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int save_errno = errno;
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draw_progress_meter();
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signal(SIGALRM, update_progress_meter);
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alarm(PROGRESSTIME);
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errno = save_errno;
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}
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static int
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foregroundproc(void)
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{
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static pid_t pgrp = -1;
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int ctty_pgrp;
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if (pgrp == -1)
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pgrp = getpgrp();
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#ifdef HAVE_TCGETPGRP
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return ((ctty_pgrp = tcgetpgrp(STDOUT_FILENO)) != -1 &&
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ctty_pgrp == pgrp);
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#else
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return ((ioctl(STDOUT_FILENO, TIOCGPGRP, &ctty_pgrp) != -1 &&
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ctty_pgrp == pgrp));
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#endif
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}
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static void
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draw_progress_meter()
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{
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static const char spaces[] = " "
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" "
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" "
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" "
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" "
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" ";
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static const char prefixes[] = " KMGTP";
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struct timeval now, td, wait;
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off_t cursize, abbrevsize, bytespersec;
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double elapsed;
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int ratio, remaining, i, ai, bi, nspaces;
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char buf[512];
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if (foregroundproc() == 0)
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return;
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(void) gettimeofday(&now, (struct timezone *) 0);
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cursize = *statbytes;
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if (totalbytes != 0) {
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ratio = 100.0 * cursize / totalbytes;
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ratio = MAX(ratio, 0);
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ratio = MIN(ratio, 100);
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} else
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ratio = 100;
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abbrevsize = cursize;
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for (ai = 0; abbrevsize >= 10000 && ai < sizeof(prefixes); ai++)
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abbrevsize >>= 10;
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timersub(&now, &lastupdate, &wait);
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if (cursize > lastsize) {
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lastupdate = now;
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lastsize = cursize;
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wait.tv_sec = 0;
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}
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timersub(&now, &start, &td);
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elapsed = td.tv_sec + (td.tv_usec / 1000000.0);
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bytespersec = 0;
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if (cursize > 0) {
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bytespersec = cursize;
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if (elapsed > 0.0)
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bytespersec /= elapsed;
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}
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for (bi = 1; bytespersec >= 1024000 && bi < sizeof(prefixes); bi++)
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bytespersec >>= 10;
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nspaces = MIN(get_tty_width() - 79, sizeof(spaces) - 1);
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snprintf(buf, sizeof(buf),
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"\r%-45.45s%.*s%3d%% %4lld%c%c %3lld.%01d%cB/s",
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curfile,
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nspaces,
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spaces,
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ratio,
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(int64_t)abbrevsize,
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prefixes[ai],
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ai == 0 ? ' ' : 'B',
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(int64_t)(bytespersec / 1024),
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(int)((bytespersec % 1024) * 10 / 1024),
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prefixes[bi]
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);
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if (cursize <= 0 || elapsed <= 0.0 || cursize > totalbytes) {
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snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
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" --:-- ETA");
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} else if (wait.tv_sec >= STALLTIME) {
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snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
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" - stalled -");
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} else {
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if (cursize != totalbytes)
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remaining = (int)(totalbytes / (cursize / elapsed) -
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elapsed);
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else
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remaining = elapsed;
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i = remaining / 3600;
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if (i)
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snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
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"%2d:", i);
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else
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snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
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" ");
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i = remaining % 3600;
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snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
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"%02d:%02d%s", i / 60, i % 60,
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(cursize != totalbytes) ? " ETA" : " ");
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}
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atomicio(write, fileno(stdout), buf, strlen(buf));
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}
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static int
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get_tty_width(void)
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{
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struct winsize winsize;
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if (ioctl(fileno(stdout), TIOCGWINSZ, &winsize) != -1)
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return (winsize.ws_col ? winsize.ws_col : 80);
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else
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return (80);
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}
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