Contents of /trunk/mkinitrd-magellan/busybox/libbb/progress.c
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Wed Aug 18 21:56:57 2010 UTC (14 years, 1 month ago) by niro
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Wed Aug 18 21:56:57 2010 UTC (14 years, 1 month ago) by niro
File MIME type: text/plain
File size: 4923 byte(s)
-updated to busybox-1.17.1
1 | /* vi: set sw=4 ts=4: */ |
2 | /* |
3 | * Progress bar code. |
4 | */ |
5 | /* Original copyright notice which applies to the CONFIG_FEATURE_WGET_STATUSBAR stuff, |
6 | * much of which was blatantly stolen from openssh. |
7 | */ |
8 | /*- |
9 | * Copyright (c) 1992, 1993 |
10 | * The Regents of the University of California. All rights reserved. |
11 | * |
12 | * Redistribution and use in source and binary forms, with or without |
13 | * modification, are permitted provided that the following conditions |
14 | * are met: |
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. |
20 | * |
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> |
23 | * |
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. |
27 | * |
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 |
38 | * SUCH DAMAGE. |
39 | */ |
40 | #include "libbb.h" |
41 | #include "unicode.h" |
42 | |
43 | enum { |
44 | /* Seconds when xfer considered "stalled" */ |
45 | STALLTIME = 5 |
46 | }; |
47 | |
48 | static unsigned int get_tty2_width(void) |
49 | { |
50 | unsigned width; |
51 | get_terminal_width_height(2, &width, NULL); |
52 | return width; |
53 | } |
54 | |
55 | void FAST_FUNC bb_progress_init(bb_progress_t *p) |
56 | { |
57 | p->start_sec = monotonic_sec(); |
58 | p->lastupdate_sec = p->start_sec; |
59 | p->lastsize = 0; |
60 | p->inited = 1; |
61 | } |
62 | |
63 | void FAST_FUNC bb_progress_update(bb_progress_t *p, |
64 | const char *curfile, |
65 | off_t beg_range, |
66 | off_t transferred, |
67 | off_t totalsize) |
68 | { |
69 | off_t abbrevsize; |
70 | unsigned since_last_update, elapsed; |
71 | unsigned ratio; |
72 | int barlength, i; |
73 | |
74 | ratio = 100; |
75 | if (totalsize) { |
76 | /* long long helps to have it working even if !LFS */ |
77 | ratio = (unsigned) (100ULL * (transferred+beg_range) / totalsize); |
78 | if (ratio > 100) ratio = 100; |
79 | } |
80 | |
81 | #if ENABLE_UNICODE_SUPPORT |
82 | init_unicode(); |
83 | /* libbb candidate? */ |
84 | { |
85 | wchar_t wbuf21[21]; |
86 | char *buf = xstrdup(curfile); |
87 | unsigned len; |
88 | |
89 | /* trim to 20 wide chars max (sets wbuf21[20] to 0) |
90 | * also, in case mbstowcs fails, we at least |
91 | * dont get garbage */ |
92 | memset(wbuf21, 0, sizeof(wbuf21)); |
93 | /* convert to wide chars, no more than 20 */ |
94 | len = mbstowcs(wbuf21, curfile, 20); /* NB: may return -1 */ |
95 | /* back to multibyte; cant overflow */ |
96 | wcstombs(buf, wbuf21, INT_MAX); |
97 | len = (len > 20) ? 0 : 20 - len; |
98 | fprintf(stderr, "\r%s%*s%4d%% ", buf, len, "", ratio); |
99 | free(buf); |
100 | } |
101 | #else |
102 | fprintf(stderr, "\r%-20.20s%4d%% ", curfile, ratio); |
103 | #endif |
104 | |
105 | barlength = get_tty2_width() - 49; |
106 | if (barlength > 0) { |
107 | /* god bless gcc for variable arrays :) */ |
108 | i = barlength * ratio / 100; |
109 | { |
110 | char buf[i+1]; |
111 | memset(buf, '*', i); |
112 | buf[i] = '\0'; |
113 | fprintf(stderr, "|%s%*s|", buf, barlength - i, ""); |
114 | } |
115 | } |
116 | i = 0; |
117 | abbrevsize = transferred + beg_range; |
118 | while (abbrevsize >= 100000) { |
119 | i++; |
120 | abbrevsize >>= 10; |
121 | } |
122 | /* see http://en.wikipedia.org/wiki/Tera */ |
123 | fprintf(stderr, "%6d%c ", (int)abbrevsize, " kMGTPEZY"[i]); |
124 | |
125 | elapsed = monotonic_sec(); |
126 | since_last_update = elapsed - p->lastupdate_sec; |
127 | if (transferred > p->lastsize) { |
128 | p->lastupdate_sec = elapsed; |
129 | p->lastsize = transferred; |
130 | if (since_last_update >= STALLTIME) { |
131 | /* We "cut off" these seconds from elapsed time |
132 | * by adjusting start time */ |
133 | p->start_sec += since_last_update; |
134 | } |
135 | since_last_update = 0; /* we are un-stalled now */ |
136 | } |
137 | elapsed -= p->start_sec; /* now it's "elapsed since start" */ |
138 | |
139 | if (since_last_update >= STALLTIME) { |
140 | fprintf(stderr, " - stalled -"); |
141 | } else { |
142 | off_t to_download = totalsize - beg_range; |
143 | if (!totalsize || transferred <= 0 || (int)elapsed <= 0 || transferred > to_download) { |
144 | fprintf(stderr, "--:--:-- ETA"); |
145 | } else { |
146 | /* to_download / (transferred/elapsed) - elapsed: */ |
147 | int eta = (int) ((unsigned long long)to_download*elapsed/transferred - elapsed); |
148 | /* (long long helps to have working ETA even if !LFS) */ |
149 | i = eta % 3600; |
150 | fprintf(stderr, "%02d:%02d:%02d ETA", eta / 3600, i / 60, i % 60); |
151 | } |
152 | } |
153 | } |