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Makefile.in contains updated files required
--HG-- extra : convert_revision : cc8a8c49dc70e632c352853a39801089b08149be
This commit is contained in:
Matt Johnston
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progressmeter.c
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267
progressmeter.c
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#ifdef PROGRESS_METER
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/*
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* Copyright (c) 2003 Nils Nordman. 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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#include "includes.h"
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/*RCSID("$OpenBSD: progressmeter.c,v 1.15 2003/08/31 12:14:22 markus Exp $");*/
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#include "progressmeter.h"
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#include "atomicio.h"
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#include "scpmisc.h"
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#define DEFAULT_WINSIZE 80
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#define MAX_WINSIZE 512
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#define PADDING 1 /* padding between the progress indicators */
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#define UPDATE_INTERVAL 1 /* update the progress meter every second */
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#define STALL_TIME 5 /* we're stalled after this many seconds */
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/* determines whether we can output to the terminal */
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static int can_output(void);
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/* formats and inserts the specified size into the given buffer */
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static void format_size(char *, int, off_t);
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static void format_rate(char *, int, off_t);
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/* updates the progressmeter to reflect the current state of the transfer */
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void refresh_progress_meter(void);
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/* signal handler for updating the progress meter */
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static void update_progress_meter(int);
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static time_t start; /* start progress */
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static time_t last_update; /* last progress update */
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static char *file; /* name of the file being transferred */
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static off_t end_pos; /* ending position of transfer */
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static off_t cur_pos; /* transfer position as of last refresh */
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static volatile off_t *counter; /* progress counter */
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static long stalled; /* how long we have been stalled */
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static int bytes_per_second; /* current speed in bytes per second */
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static int win_size; /* terminal window size */
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/* units for format_size */
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static const char unit[] = " KMGT";
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static int
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can_output(void)
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{
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return (getpgrp() == tcgetpgrp(STDOUT_FILENO));
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}
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static void
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format_rate(char *buf, int size, off_t bytes)
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{
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int i;
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bytes *= 100;
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for (i = 0; bytes >= 100*1000 && unit[i] != 'T'; i++)
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bytes = (bytes + 512) / 1024;
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if (i == 0) {
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i++;
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bytes = (bytes + 512) / 1024;
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}
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snprintf(buf, size, "%3lld.%1lld%c%s",
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(int64_t) bytes / 100,
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(int64_t) (bytes + 5) / 10 % 10,
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unit[i],
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i ? "B" : " ");
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}
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static void
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format_size(char *buf, int size, off_t bytes)
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{
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int i;
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for (i = 0; bytes >= 10000 && unit[i] != 'T'; i++)
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bytes = (bytes + 512) / 1024;
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snprintf(buf, size, "%4lld%c%s",
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(int64_t) bytes,
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unit[i],
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i ? "B" : " ");
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}
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void
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refresh_progress_meter(void)
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{
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char buf[MAX_WINSIZE + 1];
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time_t now;
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off_t transferred;
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double elapsed;
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int percent;
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int bytes_left;
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int cur_speed;
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int hours, minutes, seconds;
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int i, len;
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int file_len;
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transferred = *counter - cur_pos;
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cur_pos = *counter;
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now = time(NULL);
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bytes_left = end_pos - cur_pos;
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if (bytes_left > 0)
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elapsed = now - last_update;
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else
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elapsed = now - start;
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/* calculate speed */
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if (elapsed != 0)
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cur_speed = (transferred / elapsed);
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else
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cur_speed = 0;
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#define AGE_FACTOR 0.9
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if (bytes_per_second != 0) {
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bytes_per_second = (bytes_per_second * AGE_FACTOR) +
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(cur_speed * (1.0 - AGE_FACTOR));
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} else
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bytes_per_second = cur_speed;
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/* filename */
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buf[0] = '\0';
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file_len = win_size - 35;
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if (file_len > 0) {
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len = snprintf(buf, file_len + 1, "\r%s", file);
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if (len < 0)
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len = 0;
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for (i = len; i < file_len; i++ )
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buf[i] = ' ';
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buf[file_len] = '\0';
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}
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/* percent of transfer done */
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if (end_pos != 0)
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percent = ((float)cur_pos / end_pos) * 100;
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else
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percent = 100;
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snprintf(buf + strlen(buf), win_size - strlen(buf),
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" %3d%% ", percent);
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/* amount transferred */
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format_size(buf + strlen(buf), win_size - strlen(buf),
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cur_pos);
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strlcat(buf, " ", win_size);
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/* bandwidth usage */
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format_rate(buf + strlen(buf), win_size - strlen(buf),
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bytes_per_second);
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strlcat(buf, "/s ", win_size);
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/* ETA */
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if (!transferred)
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stalled += elapsed;
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else
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stalled = 0;
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if (stalled >= STALL_TIME)
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strlcat(buf, "- stalled -", win_size);
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else if (bytes_per_second == 0 && bytes_left)
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strlcat(buf, " --:-- ETA", win_size);
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else {
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if (bytes_left > 0)
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seconds = bytes_left / bytes_per_second;
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else
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seconds = elapsed;
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hours = seconds / 3600;
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seconds -= hours * 3600;
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minutes = seconds / 60;
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seconds -= minutes * 60;
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if (hours != 0)
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snprintf(buf + strlen(buf), win_size - strlen(buf),
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"%d:%02d:%02d", hours, minutes, seconds);
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else
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snprintf(buf + strlen(buf), win_size - strlen(buf),
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" %02d:%02d", minutes, seconds);
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if (bytes_left > 0)
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strlcat(buf, " ETA", win_size);
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else
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strlcat(buf, " ", win_size);
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}
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atomicio(vwrite, STDOUT_FILENO, buf, win_size);
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last_update = now;
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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;
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save_errno = errno;
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if (can_output())
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refresh_progress_meter();
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signal(SIGALRM, update_progress_meter);
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alarm(UPDATE_INTERVAL);
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errno = save_errno;
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}
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void
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start_progress_meter(char *f, off_t filesize, off_t *stat)
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{
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struct winsize winsize;
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start = last_update = time(NULL);
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file = f;
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end_pos = filesize;
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cur_pos = 0;
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counter = stat;
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stalled = 0;
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bytes_per_second = 0;
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if (ioctl(STDOUT_FILENO, TIOCGWINSZ, &winsize) != -1 &&
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winsize.ws_col != 0) {
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if (winsize.ws_col > MAX_WINSIZE)
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win_size = MAX_WINSIZE;
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else
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win_size = winsize.ws_col;
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} else
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win_size = DEFAULT_WINSIZE;
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win_size += 1; /* trailing \0 */
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if (can_output())
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refresh_progress_meter();
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signal(SIGALRM, update_progress_meter);
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alarm(UPDATE_INTERVAL);
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}
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void
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stop_progress_meter(void)
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{
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alarm(0);
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if (!can_output())
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return;
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/* Ensure we complete the progress */
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if (cur_pos != end_pos)
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refresh_progress_meter();
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atomicio(vwrite, STDOUT_FILENO, "\n", 1);
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}
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#endif /* PROGRESS_METER */
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