wget: factor out progress bar code
Signed-off-by: Magnus Damm <magnus.damm@gmail.com> Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
This commit is contained in:
Magnus Damm
committed by
Denys Vlasenko
Denys Vlasenko
parent
f5c2f72917
commit
f5914992f3
152
libbb/progress.c
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152
libbb/progress.c
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@@ -0,0 +1,152 @@
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/* vi: set sw=4 ts=4: */
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/*
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* Progress bar code.
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*/
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/* Original copyright notice which applies to the CONFIG_FEATURE_WGET_STATUSBAR stuff,
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* much of which was blatantly stolen from openssh.
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*/
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/*-
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* Copyright (c) 1992, 1993
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* The Regents of the University of California. 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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* 3. <BSD Advertising Clause omitted per the July 22, 1999 licensing change
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* ftp://ftp.cs.berkeley.edu/pub/4bsd/README.Impt.License.Change>
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*
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include "libbb.h"
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#include "unicode.h"
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enum {
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/* Seconds when xfer considered "stalled" */
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STALLTIME = 5
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};
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static unsigned int get_tty2_width(void)
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{
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unsigned width;
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get_terminal_width_height(2, &width, NULL);
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return width;
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}
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void FAST_FUNC bb_progress_init(bb_progress_t *p)
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{
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p->start_sec = monotonic_sec();
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p->lastupdate_sec = p->start_sec;
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p->lastsize = 0;
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}
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void FAST_FUNC bb_progress_update(bb_progress_t *p,
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const char *curfile,
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off_t beg_range,
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off_t transferred,
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off_t totalsize)
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{
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off_t abbrevsize;
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unsigned since_last_update, elapsed;
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unsigned ratio;
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int barlength, i;
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ratio = 100;
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if (totalsize) {
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/* long long helps to have it working even if !LFS */
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ratio = (unsigned) (100ULL * (transferred+beg_range) / totalsize);
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if (ratio > 100) ratio = 100;
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}
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#if ENABLE_FEATURE_ASSUME_UNICODE
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check_unicode_in_env();
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/* libbb candidate? */
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{
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wchar_t wbuf21[21];
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char *buf = xstrdup(curfile);
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unsigned len;
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/* trim to 20 wide chars max (sets wbuf21[20] to 0)
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* also, in case mbstowcs fails, we at least
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* dont get garbage */
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memset(wbuf21, 0, sizeof(wbuf21));
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/* convert to wide chars, no more than 20 */
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len = mbstowcs(wbuf21, curfile, 20); /* NB: may return -1 */
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/* back to multibyte; cant overflow */
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wcstombs(buf, wbuf21, INT_MAX);
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len = (len > 20) ? 0 : 20 - len;
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fprintf(stderr, "\r%s%*s%4d%% ", buf, len, "", ratio);
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free(buf);
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}
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#else
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fprintf(stderr, "\r%-20.20s%4d%% ", curfile, ratio);
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#endif
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barlength = get_tty2_width() - 49;
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if (barlength > 0) {
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/* god bless gcc for variable arrays :) */
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i = barlength * ratio / 100;
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{
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char buf[i+1];
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memset(buf, '*', i);
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buf[i] = '\0';
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fprintf(stderr, "|%s%*s|", buf, barlength - i, "");
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}
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}
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i = 0;
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abbrevsize = transferred + beg_range;
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while (abbrevsize >= 100000) {
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i++;
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abbrevsize >>= 10;
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}
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/* see http://en.wikipedia.org/wiki/Tera */
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fprintf(stderr, "%6d%c ", (int)abbrevsize, " kMGTPEZY"[i]);
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elapsed = monotonic_sec();
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since_last_update = elapsed - p->lastupdate_sec;
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if (transferred > p->lastsize) {
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p->lastupdate_sec = elapsed;
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p->lastsize = transferred;
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if (since_last_update >= STALLTIME) {
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/* We "cut off" these seconds from elapsed time
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* by adjusting start time */
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p->start_sec += since_last_update;
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}
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since_last_update = 0; /* we are un-stalled now */
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}
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elapsed -= p->start_sec; /* now it's "elapsed since start" */
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if (since_last_update >= STALLTIME) {
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fprintf(stderr, " - stalled -");
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} else {
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off_t to_download = totalsize - beg_range;
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if (!totalsize || transferred <= 0 || (int)elapsed <= 0 || transferred > to_download) {
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fprintf(stderr, "--:--:-- ETA");
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} else {
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/* to_download / (transferred/elapsed) - elapsed: */
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int eta = (int) ((unsigned long long)to_download*elapsed/transferred - elapsed);
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/* (long long helps to have working ETA even if !LFS) */
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i = eta % 3600;
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fprintf(stderr, "%02d:%02d:%02d ETA", eta / 3600, i / 60, i % 60);
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}
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}
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}
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