1 /* vi: set sw=4 ts=4: */
5 /* Original copyright notice which applies to the CONFIG_FEATURE_WGET_STATUSBAR stuff,
6 * much of which was blatantly stolen from openssh.
9 * Copyright (c) 1992, 1993
10 * The Regents of the University of California. All rights reserved.
12 * Redistribution and use in source and binary forms, with or without
13 * modification, are permitted provided that the following conditions
15 * 1. Redistributions of source code must retain the above copyright
16 * notice, this list of conditions and the following disclaimer.
17 * 2. Redistributions in binary form must reproduce the above copyright
18 * notice, this list of conditions and the following disclaimer in the
19 * documentation and/or other materials provided with the distribution.
21 * 3. BSD Advertising Clause omitted per the July 22, 1999 licensing change
22 * ftp://ftp.cs.berkeley.edu/pub/4bsd/README.Impt.License.Change
24 * 4. Neither the name of the University nor the names of its contributors
25 * may be used to endorse or promote products derived from this software
26 * without specific prior written permission.
28 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
29 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
30 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
31 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
32 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
33 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
34 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
35 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
36 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
37 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
44 /* Seconds when xfer considered "stalled" */
48 static unsigned int get_tty2_width(void)
51 get_terminal_width_height(2, &width, NULL);
55 void FAST_FUNC bb_progress_init(bb_progress_t *p, const char *curfile)
57 #if ENABLE_UNICODE_SUPPORT
59 p->curfile = unicode_conv_to_printable_fixedwidth(/*NULL,*/ curfile, 20);
63 p->start_sec = monotonic_sec();
64 p->lastupdate_sec = p->start_sec;
68 /* File already had beg_size bytes.
69 * Then we started downloading.
70 * We downloaded "transferred" bytes so far.
71 * Download is expected to stop when total size (beg_size + transferred)
72 * will be "totalsize" bytes.
73 * If totalsize == 0, then it is unknown.
75 void FAST_FUNC bb_progress_update(bb_progress_t *p,
80 uoff_t beg_and_transferred;
81 unsigned since_last_update, elapsed;
86 elapsed = monotonic_sec();
87 since_last_update = elapsed - p->lastupdate_sec;
89 if (totalsize != 0 && transferred >= totalsize - beg_size) {
90 /* Last call. Do not skip this update */
91 transferred = totalsize - beg_size; /* sanitize just in case */
93 else if (since_last_update == 0) {
95 * Do not update on every call
96 * (we can be called on every network read!)
103 * Scale sizes down if they are close to overflowing.
104 * This allows calculations like (100 * transferred / totalsize)
105 * without risking overflow: we guarantee 10 highest bits to be 0.
106 * Introduced error is less than 1 / 2^12 ~= 0.025%
108 if (ULONG_MAX > 0xffffffff || sizeof(off_t) == 4 || sizeof(off_t) != 8) {
110 * 64-bit CPU || small off_t: in either case,
111 * >> is cheap, single-word operation.
112 * ... || strange off_t: also use this code
113 * (it is safe, just suboptimal wrt code size),
114 * because 32/64 optimized one works only for 64-bit off_t.
116 if (totalsize >= (1 << 22)) {
123 /* 32-bit CPU and 64-bit off_t.
124 * Use a 40-bit shift, it is easier to do on 32-bit CPU.
126 if (totalsize >= (uoff_t)(1ULL << 54)) {
127 totalsize = (uint32_t)(totalsize >> 32) >> 8;
128 beg_size = (uint32_t)(beg_size >> 32) >> 8;
129 transferred = (uint32_t)(transferred >> 32) >> 8;
134 beg_and_transferred = beg_size + transferred;
136 ratio = 100 * beg_and_transferred / totalsize;
137 if (ENABLE_UNICODE_SUPPORT)
138 fprintf(stderr, "\r%s%4u%% ", p->curfile, ratio);
140 fprintf(stderr, "\r%-20.20s%4u%% ", p->curfile, ratio);
142 barlength = get_tty2_width() - 49;
144 /* god bless gcc for variable arrays :) */
145 char buf[barlength + 1];
146 unsigned stars = (unsigned)barlength * beg_and_transferred / totalsize;
147 memset(buf, ' ', barlength);
148 buf[barlength] = '\0';
149 memset(buf, '*', stars);
150 fprintf(stderr, "|%s|", buf);
153 while (beg_and_transferred >= 100000) {
154 beg_and_transferred >>= 10;
157 /* see http://en.wikipedia.org/wiki/Tera */
158 fprintf(stderr, "%6u%c", (unsigned)beg_and_transferred, " kMGTPEZY"[kiloscale]);
159 #define beg_and_transferred dont_use_beg_and_transferred_below()
161 if (transferred != p->lastsize) {
162 p->lastupdate_sec = elapsed;
163 p->lastsize = transferred;
164 if (since_last_update >= STALLTIME) {
165 /* We "cut out" these seconds from elapsed time
166 * by adjusting start time */
167 p->start_sec += since_last_update;
169 since_last_update = 0; /* we are un-stalled now */
172 elapsed -= p->start_sec; /* now it's "elapsed since start" */
174 if (since_last_update >= STALLTIME) {
175 fprintf(stderr, " - stalled -");
176 } else if (!totalsize || !transferred || (int)elapsed <= 0) {
177 fprintf(stderr, " --:--:-- ETA");
179 unsigned eta, secs, hours;
181 totalsize -= beg_size; /* now it's "total to upload" */
183 /* Estimated remaining time =
184 * estimated_sec_to_dl_totalsize_bytes - elapsed_sec =
185 * totalsize / average_bytes_sec_so_far - elapsed =
186 * totalsize / (transferred/elapsed) - elapsed =
187 * totalsize * elapsed / transferred - elapsed
189 eta = totalsize * elapsed / transferred - elapsed;
190 if (eta >= 1000*60*60)
191 eta = 1000*60*60 - 1;
194 fprintf(stderr, "%3u:%02u:%02u ETA", hours, secs / 60, secs % 60);