1 | /* vi: set sw=4 ts=4: */
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2 | /*
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3 | * Progress bar code.
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4 | */
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5 | /* Original copyright notice which applies to the CONFIG_FEATURE_WGET_STATUSBAR stuff,
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6 | * much of which was blatantly stolen from openssh.
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7 | */
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8 | /*-
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9 | * Copyright (c) 1992, 1993
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10 | * The Regents of the University of California. All rights reserved.
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11 | *
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12 | * Redistribution and use in source and binary forms, with or without
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13 | * modification, are permitted provided that the following conditions
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14 | * are met:
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15 | * 1. Redistributions of source code must retain the above copyright
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16 | * notice, this list of conditions and the following disclaimer.
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17 | * 2. Redistributions in binary form must reproduce the above copyright
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18 | * notice, this list of conditions and the following disclaimer in the
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19 | * documentation and/or other materials provided with the distribution.
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20 | *
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21 | * 3. BSD Advertising Clause omitted per the July 22, 1999 licensing change
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22 | * ftp://ftp.cs.berkeley.edu/pub/4bsd/README.Impt.License.Change
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23 | *
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24 | * 4. Neither the name of the University nor the names of its contributors
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25 | * may be used to endorse or promote products derived from this software
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26 | * without specific prior written permission.
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27 | *
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28 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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29 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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30 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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31 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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32 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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33 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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34 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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35 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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36 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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37 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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38 | * SUCH DAMAGE.
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39 | */
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40 | #include "libbb.h"
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41 | #include "unicode.h"
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42 |
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43 | enum {
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44 | /* Seconds when xfer considered "stalled" */
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45 | STALLTIME = 5
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46 | };
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47 |
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48 | static unsigned int get_tty2_width(void)
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49 | {
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50 | unsigned width;
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51 | get_terminal_width_height(2, &width, NULL);
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52 | return width;
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53 | }
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54 |
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55 | void FAST_FUNC bb_progress_init(bb_progress_t *p)
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56 | {
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57 | p->start_sec = monotonic_sec();
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58 | p->lastupdate_sec = p->start_sec;
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59 | p->lastsize = 0;
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60 | p->inited = 1;
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61 | }
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62 |
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63 | void FAST_FUNC bb_progress_update(bb_progress_t *p,
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64 | const char *curfile,
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65 | off_t beg_range,
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66 | off_t transferred,
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67 | off_t totalsize)
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68 | {
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69 | uoff_t beg_and_transferred;
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70 | unsigned since_last_update, elapsed;
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71 | unsigned ratio;
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72 | int barlength, i;
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73 |
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74 | /* totalsize == 0 if it is unknown */
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75 |
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76 | elapsed = monotonic_sec();
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77 | since_last_update = elapsed - p->lastupdate_sec;
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78 | /* Do not update on every call
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79 | * (we can be called on every network read!) */
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80 | if (since_last_update == 0 && !totalsize)
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81 | return;
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82 |
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83 | beg_and_transferred = beg_range + transferred;
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84 | ratio = 100;
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85 | if (beg_and_transferred < totalsize) {
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86 | /* Do not update on every call
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87 | * (we can be called on every network read!) */
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88 | if (since_last_update == 0)
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89 | return;
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90 | /* long long helps to have it working even if !LFS */
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91 | ratio = 100ULL * beg_and_transferred / (uoff_t)totalsize;
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92 | }
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93 |
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94 | #if ENABLE_UNICODE_SUPPORT
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95 | init_unicode();
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96 | /* libbb candidate? */
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97 | {
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98 | wchar_t wbuf21[21];
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99 | char *buf = xstrdup(curfile);
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100 | unsigned len;
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101 |
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102 | /* trim to 20 wide chars max (sets wbuf21[20] to 0)
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103 | * also, in case mbstowcs fails, we at least
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104 | * dont get garbage */
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105 | memset(wbuf21, 0, sizeof(wbuf21));
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106 | /* convert to wide chars, no more than 20 */
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107 | len = mbstowcs(wbuf21, curfile, 20); /* NB: may return -1 */
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108 | /* back to multibyte; cant overflow */
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109 | wcstombs(buf, wbuf21, INT_MAX);
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110 | len = (len > 20) ? 0 : 20 - len;
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111 | fprintf(stderr, "\r%s%*s%4u%% ", buf, len, "", ratio);
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112 | free(buf);
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113 | }
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114 | #else
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115 | fprintf(stderr, "\r%-20.20s%4u%% ", curfile, ratio);
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116 | #endif
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117 |
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118 | barlength = get_tty2_width() - 49;
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119 | if (barlength > 0) {
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120 | /* god bless gcc for variable arrays :) */
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121 | char buf[barlength + 1];
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122 | unsigned stars = (unsigned)barlength * ratio / (unsigned)100;
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123 | memset(buf, ' ', barlength);
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124 | buf[barlength] = '\0';
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125 | memset(buf, '*', stars);
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126 | fprintf(stderr, "|%s|", buf);
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127 | }
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128 |
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129 | i = 0;
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130 | while (beg_and_transferred >= 100000) {
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131 | i++;
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132 | beg_and_transferred >>= 10;
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133 | }
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134 | /* see http://en.wikipedia.org/wiki/Tera */
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135 | fprintf(stderr, "%6u%c ", (unsigned)beg_and_transferred, " kMGTPEZY"[i]);
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136 | #define beg_and_transferred dont_use_beg_and_transferred_below
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137 |
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138 | if (transferred > p->lastsize) {
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139 | p->lastupdate_sec = elapsed;
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140 | p->lastsize = transferred;
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141 | if (since_last_update >= STALLTIME) {
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142 | /* We "cut off" these seconds from elapsed time
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143 | * by adjusting start time */
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144 | p->start_sec += since_last_update;
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145 | }
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146 | since_last_update = 0; /* we are un-stalled now */
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147 | }
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148 | elapsed -= p->start_sec; /* now it's "elapsed since start" */
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149 |
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150 | if (since_last_update >= STALLTIME) {
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151 | fprintf(stderr, " - stalled -");
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152 | } else {
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153 | off_t to_download = totalsize - beg_range;
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154 | if (!totalsize || transferred <= 0 || (int)elapsed <= 0 || transferred > to_download) {
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155 | fprintf(stderr, "--:--:-- ETA");
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156 | } else {
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157 | /* to_download / (transferred/elapsed) - elapsed: */
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158 | /* (long long helps to have working ETA even if !LFS) */
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159 | unsigned eta = (unsigned long long)to_download*elapsed/(uoff_t)transferred - elapsed;
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160 | unsigned secs = eta % 3600;
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161 | fprintf(stderr, "%02u:%02u:%02u ETA", eta / 3600, secs / 60, secs % 60);
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162 | }
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163 | }
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164 | }
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