xbps/bin/xbps-install/fetch_cb.c

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/*-
* Copyright (c) 2009-2012 Juan Romero Pardines
* Copyright (c) 2000-2004 Dag-Erling Coïdan Smørgrav
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer
* in this position and unchanged.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* From FreeBSD fetch(8):
* $FreeBSD: src/usr.bin/fetch/fetch.c,v 1.84.2.1 2009/08/03 08:13:06 kensmith Exp $
*/
#include <sys/param.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/time.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include <fcntl.h>
#include <xbps_api.h>
#include "defs.h"
#include "config.h"
static void
get_time(struct timeval *tvp)
{
#ifdef HAVE_CLOCK_GETTIME
struct timespec ts;
(void)clock_gettime(CLOCK_MONOTONIC, &ts);
tvp->tv_sec = ts.tv_sec;
tvp->tv_usec = ts.tv_nsec / 1000;
#else
(void)gettimeofday(tvp, NULL);
#endif
}
/*
* Compute and display ETA
*/
static const char *
stat_eta(struct xbps_fetch_cb_data *xfpd, void *cbdata)
{
struct xferstat *xfer = cbdata;
static char str[16];
long elapsed, eta;
off_t received, expected;
if (xfpd->file_size == -1)
return "unknown";
elapsed = xfer->last.tv_sec - xfer->start.tv_sec;
received = xfpd->file_dloaded - xfpd->file_offset;
expected = xfpd->file_size - xfpd->file_dloaded;
eta = (long)(elapsed * (long)expected / (long)received);
if (eta > 3600)
snprintf(str, sizeof str, "%02ldh%02ldm",
eta / 3600, (eta % 3600) / 60);
else
snprintf(str, sizeof str, "%02ldm%02lds",
eta / 60, eta % 60);
return str;
}
static inline bool
compare_double(const double a, const double b)
{
const double precision = 0.00001;
if ((a - precision) < b && (a + precision) > b)
return true;
else
return false;
}
/*
* Compute and display transfer rate
*/
static const char *
stat_bps(struct xbps_fetch_cb_data *xfpd, void *cbdata)
{
struct xferstat *xfer = cbdata;
static char str[16];
char size[8];
double delta, bps;
delta = (xfer->last.tv_sec + (xfer->last.tv_usec / 1.e6))
- (xfer->start.tv_sec + (xfer->start.tv_usec / 1.e6));
if (compare_double(delta, 0.0001)) {
snprintf(str, sizeof str, "-- stalled --");
} else {
bps =
((double)(xfpd->file_dloaded - xfpd->file_offset) / delta);
(void)xbps_humanize_number(size, (int64_t)bps);
snprintf(str, sizeof str, "%s/s", size);
}
return str;
}
/*
* Update the stats display
*/
static void
stat_display(struct xbps_fetch_cb_data *xfpd, void *cbdata)
{
struct xferstat *xfer = cbdata;
struct timeval now;
char totsize[8];
int percentage;
get_time(&now);
if (now.tv_sec <= xfer->last.tv_sec)
return;
xfer->last = now;
if (xfpd->file_size == -1) {
percentage = 0;
snprintf(totsize, 3, "0B");
} else {
percentage = (int)((double)(100.0 *
(double)xfpd->file_dloaded) / (double)xfpd->file_size);
(void)xbps_humanize_number(totsize, (int64_t)xfpd->file_size);
}
fprintf(stderr, "%s: [%s %d%%] %s ETA: %s\033[K\r",
xfpd->file_name, totsize, percentage,
stat_bps(xfpd, xfer), stat_eta(xfpd, xfer));
}
void
fetch_file_progress_cb(struct xbps_handle *xhp,
struct xbps_fetch_cb_data *xfpd,
void *cbdata)
{
struct xferstat *xfer = cbdata;
char size[8];
(void)xhp;
if (xfpd->cb_start) {
/* start transfer stats */
get_time(&xfer->start);
xfer->last.tv_sec = xfer->last.tv_usec = 0;
} else if (xfpd->cb_update) {
/* update transfer stats */
stat_display(xfpd, xfer);
} else if (xfpd->cb_end) {
/* end transfer stats */
(void)xbps_humanize_number(size, (int64_t)xfpd->file_dloaded);
fprintf(stderr,"%s: %s [avg rate: %s]\033[K\n",
xfpd->file_name, size, stat_bps(xfpd, xfer));
}
}