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
40 #include <sys/types.h>
45 #include <libubox/utils.h>
49 /* Seconds when xfer considered "stalled" */
54 wh_helper(int value
, int def_val
, const char *env_name
)
57 char *s
= getenv(env_name
);
61 if (value
<= 1 || value
>= 30000)
70 return wh_helper(0, 80, "COLUMNS");
72 struct winsize win
= {0};
73 ioctl(2, TIOCGWINSZ
, &win
);
74 return wh_helper(win
.ws_col
, 80, "COLUMNS");
82 clock_gettime(CLOCK_MONOTONIC
, &tv
);
87 progress_init(struct progress
*p
, const char *curfile
)
89 p
->curfile
= strdup(curfile
);
90 p
->start_sec
= monotonic_sec();
91 p
->last_update_sec
= p
->start_sec
;
92 p
->last_change_sec
= p
->start_sec
;
96 /* File already had beg_size bytes.
97 * Then we started downloading.
98 * We downloaded "transferred" bytes so far.
99 * Download is expected to stop when total size (beg_size + transferred)
100 * will be "totalsize" bytes.
101 * If totalsize == 0, then it is unknown.
104 progress_update(struct progress
*p
, off_t beg_size
,
105 off_t transferred
, off_t totalsize
)
107 off_t beg_and_transferred
;
108 unsigned since_last_update
, elapsed
;
112 //transferred = 1234; /* use for stall detection testing */
113 //totalsize = 0; /* use for unknown size download testing */
115 elapsed
= monotonic_sec();
116 since_last_update
= elapsed
- p
->last_update_sec
;
117 p
->last_update_sec
= elapsed
;
119 if (totalsize
!= 0 && transferred
>= totalsize
- beg_size
) {
120 /* Last call. Do not skip this update */
121 transferred
= totalsize
- beg_size
; /* sanitize just in case */
123 else if (since_last_update
== 0) {
125 * Do not update on every call
126 * (we can be called on every network read!)
133 * Scale sizes down if they are close to overflowing.
134 * This allows calculations like (100 * transferred / totalsize)
135 * without risking overflow: we guarantee 10 highest bits to be 0.
136 * Introduced error is less than 1 / 2^12 ~= 0.025%
138 if (ULONG_MAX
> 0xffffffff || sizeof(off_t
) == 4 || sizeof(off_t
) != 8) {
140 * 64-bit CPU || small off_t: in either case,
141 * >> is cheap, single-word operation.
142 * ... || strange off_t: also use this code
143 * (it is safe, just suboptimal wrt code size),
144 * because 32/64 optimized one works only for 64-bit off_t.
146 if (totalsize
>= (1 << 22)) {
153 /* 32-bit CPU and 64-bit off_t.
154 * Use a 40-bit shift, it is easier to do on 32-bit CPU.
156 /* ONE suppresses "warning: shift count >= width of type" */
157 #define ONE (sizeof(off_t) > 4)
158 if (totalsize
>= (off_t
)(1ULL << 54*ONE
)) {
159 totalsize
= (uint32_t)(totalsize
>> 32*ONE
) >> 8;
160 beg_size
= (uint32_t)(beg_size
>> 32*ONE
) >> 8;
161 transferred
= (uint32_t)(transferred
>> 32*ONE
) >> 8;
166 fprintf(stderr
, "\r%-20.20s", p
->curfile
);
168 beg_and_transferred
= beg_size
+ transferred
;
170 if (totalsize
!= 0) {
171 unsigned ratio
= 100 * beg_and_transferred
/ totalsize
;
172 fprintf(stderr
, "%4u%%", ratio
);
174 barlength
= get_tty2_width() - 49;
176 /* god bless gcc for variable arrays :) */
177 char buf
[barlength
+ 1];
178 unsigned stars
= (unsigned)barlength
* beg_and_transferred
/ totalsize
;
179 memset(buf
, ' ', barlength
);
180 buf
[barlength
] = '\0';
181 memset(buf
, '*', stars
);
182 fprintf(stderr
, " |%s|", buf
);
186 while (beg_and_transferred
>= 100000) {
187 beg_and_transferred
>>= 10;
190 /* see http://en.wikipedia.org/wiki/Tera */
191 fprintf(stderr
, "%6u%c", (unsigned)beg_and_transferred
, " kMGTPEZY"[kiloscale
]);
193 since_last_update
= elapsed
- p
->last_change_sec
;
194 if ((unsigned)transferred
!= p
->last_size
) {
195 p
->last_change_sec
= elapsed
;
196 p
->last_size
= (unsigned)transferred
;
197 if (since_last_update
>= STALLTIME
) {
198 /* We "cut out" these seconds from elapsed time
199 * by adjusting start time */
200 p
->start_sec
+= since_last_update
;
202 since_last_update
= 0; /* we are un-stalled now */
205 elapsed
-= p
->start_sec
; /* now it's "elapsed since start" */
207 if (since_last_update
>= STALLTIME
) {
208 fprintf(stderr
, " - stalled -");
209 } else if (!totalsize
|| !transferred
|| (int)elapsed
< 0) {
210 fprintf(stderr
, " --:--:-- ETA");
212 unsigned eta
, secs
, hours
;
214 totalsize
-= beg_size
; /* now it's "total to upload" */
216 /* Estimated remaining time =
217 * estimated_sec_to_dl_totalsize_bytes - elapsed_sec =
218 * totalsize / average_bytes_sec_so_far - elapsed =
219 * totalsize / (transferred/elapsed) - elapsed =
220 * totalsize * elapsed / transferred - elapsed
222 eta
= totalsize
* elapsed
/ transferred
- elapsed
;
223 if (eta
>= 1000*60*60)
224 eta
= 1000*60*60 - 1;
227 fprintf(stderr
, "%3u:%02u:%02u ETA", hours
, secs
/ 60, secs
% 60);