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/* vi: set sw=4 ts=4: */
/*
* Progress bar code.
*/
/* Original copyright notice which applies to the CONFIG_FEATURE_WGET_STATUSBAR stuff,
* much of which was blatantly stolen from openssh.
*/
/*-
* Copyright (c) 1992, 1993
* The Regents of the University of California. 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.
* 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. BSD Advertising Clause omitted per the July 22, 1999 licensing change
* ftp://ftp.cs.berkeley.edu/pub/4bsd/README.Impt.License.Change
*
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``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 REGENTS OR CONTRIBUTORS 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.
*/
#include "libbb.h"
#include "unicode.h"
enum {
/* Seconds when xfer considered "stalled" */
STALLTIME = 5
};
static unsigned int get_tty2_width(void)
{
unsigned width;
get_terminal_width_height(2, &width, NULL);
return width;
}
void FAST_FUNC bb_progress_init(bb_progress_t *p)
{
p->start_sec = monotonic_sec();
p->lastupdate_sec = p->start_sec;
p->lastsize = 0;
p->inited = 1;
}
void FAST_FUNC bb_progress_update(bb_progress_t *p,
const char *curfile,
uoff_t beg_range,
uoff_t transferred,
uoff_t totalsize)
{
uoff_t beg_and_transferred;
unsigned since_last_update, elapsed;
unsigned ratio;
int barlength;
int kiloscale;
/* totalsize == 0 if it is unknown */
beg_and_transferred = beg_range + transferred;
elapsed = monotonic_sec();
since_last_update = elapsed - p->lastupdate_sec;
/* Do not update on every call
* (we can be called on every network read!) */
if (since_last_update == 0 && beg_and_transferred < totalsize)
return;
/* Scale sizes down if they are close to overflowing.
* If off_t is only 32 bits, this allows calculations
* like (100 * transferred / totalsize) without risking overflow.
* Introduced error is < 0.1%
*/
kiloscale = 0;
if (totalsize >= (1 << 20)) {
totalsize >>= 10;
beg_range >>= 10;
transferred >>= 10;
beg_and_transferred >>= 10;
kiloscale++;
}
if (beg_and_transferred >= totalsize)
beg_and_transferred = totalsize;
ratio = 100 * beg_and_transferred / totalsize;
#if ENABLE_UNICODE_SUPPORT
init_unicode();
{
char *buf = unicode_conv_to_printable_fixedwidth(/*NULL,*/ curfile, 20);
fprintf(stderr, "\r%s%4u%% ", buf, ratio);
free(buf);
}
#else
fprintf(stderr, "\r%-20.20s%4u%% ", curfile, ratio);
#endif
barlength = get_tty2_width() - 49;
if (barlength > 0) {
/* god bless gcc for variable arrays :) */
char buf[barlength + 1];
unsigned stars = (unsigned)barlength * beg_and_transferred / totalsize;
memset(buf, ' ', barlength);
buf[barlength] = '\0';
memset(buf, '*', stars);
fprintf(stderr, "|%s|", buf);
}
while (beg_and_transferred >= 100000) {
kiloscale++;
beg_and_transferred >>= 10;
}
/* see http://en.wikipedia.org/wiki/Tera */
fprintf(stderr, "%6u%c ", (unsigned)beg_and_transferred, " kMGTPEZY"[kiloscale]);
#define beg_and_transferred dont_use_beg_and_transferred_below()
if (transferred > p->lastsize) {
p->lastupdate_sec = elapsed;
p->lastsize = transferred;
if (since_last_update >= STALLTIME) {
/* We "cut off" these seconds from elapsed time
* by adjusting start time */
p->start_sec += since_last_update;
}
since_last_update = 0; /* we are un-stalled now */
}
elapsed -= p->start_sec; /* now it's "elapsed since start" */
if (since_last_update >= STALLTIME) {
fprintf(stderr, " - stalled -");
} else {
uoff_t to_download = totalsize - beg_range;
if (!totalsize || (int)elapsed <= 0 || transferred > to_download) {
fprintf(stderr, "--:--:-- ETA");
} else {
/* to_download / (transferred/elapsed) - elapsed: */
unsigned eta = to_download * elapsed / transferred - elapsed;
unsigned secs = eta % 3600;
unsigned hours = eta / 3600;
fprintf(stderr, "%02u:%02u:%02u ETA", hours, secs / 60, secs % 60);
}
}
}
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