Mercurial > dropbear
annotate progressmeter.c @ 1109:2c646a65a1e3
Turn addr local variable into char *
author | Gaël PORTAY <gael.portay@gmail.com> |
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date | Sat, 02 May 2015 23:03:27 +0200 |
parents | b72f98803e46 |
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rev | line source |
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1 #ifdef PROGRESS_METER |
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2 /* |
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3 * Copyright (c) 2003 Nils Nordman. All rights reserved. |
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4 * |
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5 * Redistribution and use in source and binary forms, with or without |
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6 * modification, are permitted provided that the following conditions |
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7 * are met: |
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8 * 1. Redistributions of source code must retain the above copyright |
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9 * notice, this list of conditions and the following disclaimer. |
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10 * 2. Redistributions in binary form must reproduce the above copyright |
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11 * notice, this list of conditions and the following disclaimer in the |
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12 * documentation and/or other materials provided with the distribution. |
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13 * |
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14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
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15 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
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16 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
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17 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
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18 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
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19 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
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20 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
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21 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
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23 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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24 */ |
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25 |
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26 #include "includes.h" |
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27 /*RCSID("$OpenBSD: progressmeter.c,v 1.24 2005/06/07 13:25:23 jaredy Exp $");*/ |
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28 |
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29 #include "progressmeter.h" |
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30 #include "atomicio.h" |
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31 #include "scpmisc.h" |
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32 |
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33 #define DEFAULT_WINSIZE 80 |
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34 #define MAX_WINSIZE 512 |
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35 #define PADDING 1 /* padding between the progress indicators */ |
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36 #define UPDATE_INTERVAL 1 /* update the progress meter every second */ |
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37 #define STALL_TIME 5 /* we're stalled after this many seconds */ |
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38 |
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39 /* determines whether we can output to the terminal */ |
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40 static int can_output(void); |
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41 |
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42 /* formats and inserts the specified size into the given buffer */ |
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43 static void format_size(char *, int, off_t); |
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44 static void format_rate(char *, int, off_t); |
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45 |
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46 /* window resizing */ |
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47 static void sig_winch(int); |
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48 static void setscreensize(void); |
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49 |
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50 /* updates the progressmeter to reflect the current state of the transfer */ |
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51 void refresh_progress_meter(void); |
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52 |
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53 /* signal handler for updating the progress meter */ |
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54 static void update_progress_meter(int); |
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55 |
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56 static time_t start; /* start progress */ |
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57 static time_t last_update; /* last progress update */ |
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58 static char *file; /* name of the file being transferred */ |
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59 static off_t end_pos; /* ending position of transfer */ |
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60 static off_t cur_pos; /* transfer position as of last refresh */ |
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61 static volatile off_t *counter; /* progress counter */ |
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62 static long stalled; /* how long we have been stalled */ |
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63 static int bytes_per_second; /* current speed in bytes per second */ |
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64 static int win_size; /* terminal window size */ |
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65 static volatile sig_atomic_t win_resized; /* for window resizing */ |
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66 |
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67 /* units for format_size */ |
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68 static const char unit[] = " KMGT"; |
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69 |
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70 static int |
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71 can_output(void) |
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72 { |
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73 return (getpgrp() == tcgetpgrp(STDOUT_FILENO)); |
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74 } |
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75 |
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76 static void |
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77 format_rate(char *buf, int size, off_t bytes) |
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78 { |
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79 int i; |
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80 |
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81 bytes *= 100; |
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82 for (i = 0; bytes >= 100*1000 && unit[i] != 'T'; i++) |
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83 bytes = (bytes + 512) / 1024; |
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84 if (i == 0) { |
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85 i++; |
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86 bytes = (bytes + 512) / 1024; |
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87 } |
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88 snprintf(buf, size, "%3lld.%1lld%c%s", |
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89 (long long) (bytes + 5) / 100, |
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90 (long long) (bytes + 5) / 10 % 10, |
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91 unit[i], |
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92 i ? "B" : " "); |
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93 } |
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94 |
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95 static void |
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96 format_size(char *buf, int size, off_t bytes) |
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97 { |
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98 int i; |
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99 |
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100 for (i = 0; bytes >= 10000 && unit[i] != 'T'; i++) |
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101 bytes = (bytes + 512) / 1024; |
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102 snprintf(buf, size, "%4lld%c%s", |
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103 (long long) bytes, |
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104 unit[i], |
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105 i ? "B" : " "); |
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106 } |
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107 |
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108 void |
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109 refresh_progress_meter(void) |
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110 { |
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111 char buf[MAX_WINSIZE + 1]; |
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112 time_t now; |
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113 off_t transferred; |
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114 double elapsed; |
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115 int percent; |
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116 off_t bytes_left; |
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117 int cur_speed; |
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118 int hours, minutes, seconds; |
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119 int i, len; |
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120 int file_len; |
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121 |
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122 transferred = *counter - cur_pos; |
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123 cur_pos = *counter; |
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124 now = time(NULL); |
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125 bytes_left = end_pos - cur_pos; |
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126 |
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127 if (bytes_left > 0) |
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128 elapsed = now - last_update; |
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129 else { |
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130 elapsed = now - start; |
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131 /* Calculate true total speed when done */ |
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132 transferred = end_pos; |
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133 bytes_per_second = 0; |
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134 } |
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135 |
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136 /* calculate speed */ |
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137 if (elapsed != 0) |
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138 cur_speed = (transferred / elapsed); |
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139 else |
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140 cur_speed = transferred; |
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141 |
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142 #define AGE_FACTOR 0.9 |
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143 if (bytes_per_second != 0) { |
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144 bytes_per_second = (bytes_per_second * AGE_FACTOR) + |
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145 (cur_speed * (1.0 - AGE_FACTOR)); |
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146 } else |
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147 bytes_per_second = cur_speed; |
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148 |
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149 /* filename */ |
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150 buf[0] = '\0'; |
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151 file_len = win_size - 35; |
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152 if (file_len > 0) { |
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153 len = snprintf(buf, file_len + 1, "\r%s", file); |
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154 if (len < 0) |
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155 len = 0; |
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156 if (len >= file_len + 1) |
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157 len = file_len; |
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158 for (i = len; i < file_len; i++ ) |
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159 buf[i] = ' '; |
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160 buf[file_len] = '\0'; |
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161 } |
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162 |
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163 /* percent of transfer done */ |
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164 if (end_pos != 0) |
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165 percent = ((float)cur_pos / end_pos) * 100; |
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166 else |
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167 percent = 100; |
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168 snprintf(buf + strlen(buf), win_size - strlen(buf), |
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169 " %3d%% ", percent); |
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170 |
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171 /* amount transferred */ |
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172 format_size(buf + strlen(buf), win_size - strlen(buf), |
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173 cur_pos); |
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174 strlcat(buf, " ", win_size); |
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175 |
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176 /* bandwidth usage */ |
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177 format_rate(buf + strlen(buf), win_size - strlen(buf), |
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178 (off_t)bytes_per_second); |
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179 strlcat(buf, "/s ", win_size); |
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180 |
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181 /* ETA */ |
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182 if (!transferred) |
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183 stalled += elapsed; |
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184 else |
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185 stalled = 0; |
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186 |
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187 if (stalled >= STALL_TIME) |
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188 strlcat(buf, "- stalled -", win_size); |
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189 else if (bytes_per_second == 0 && bytes_left) |
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190 strlcat(buf, " --:-- ETA", win_size); |
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191 else { |
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192 if (bytes_left > 0) |
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193 seconds = bytes_left / bytes_per_second; |
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194 else |
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195 seconds = elapsed; |
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196 |
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197 hours = seconds / 3600; |
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198 seconds -= hours * 3600; |
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199 minutes = seconds / 60; |
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200 seconds -= minutes * 60; |
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201 |
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202 if (hours != 0) |
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203 snprintf(buf + strlen(buf), win_size - strlen(buf), |
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204 "%d:%02d:%02d", hours, minutes, seconds); |
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205 else |
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206 snprintf(buf + strlen(buf), win_size - strlen(buf), |
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207 " %02d:%02d", minutes, seconds); |
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208 |
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209 if (bytes_left > 0) |
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210 strlcat(buf, " ETA", win_size); |
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211 else |
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212 strlcat(buf, " ", win_size); |
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213 } |
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214 |
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215 atomicio(vwrite, STDOUT_FILENO, buf, win_size - 1); |
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216 last_update = now; |
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217 } |
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218 |
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219 static void |
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220 update_progress_meter(int ignore) |
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221 { |
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222 int save_errno; |
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223 |
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224 save_errno = errno; |
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225 |
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|
226 if (win_resized) { |
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227 setscreensize(); |
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228 win_resized = 0; |
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229 } |
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230 if (can_output()) |
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231 refresh_progress_meter(); |
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232 |
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233 signal(SIGALRM, update_progress_meter); |
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234 alarm(UPDATE_INTERVAL); |
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|
235 errno = save_errno; |
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|
236 } |
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237 |
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238 void |
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239 start_progress_meter(char *f, off_t filesize, off_t *ctr) |
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240 { |
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241 start = last_update = time(NULL); |
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|
242 file = f; |
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243 end_pos = filesize; |
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244 cur_pos = 0; |
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|
245 counter = ctr; |
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246 stalled = 0; |
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247 bytes_per_second = 0; |
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248 |
287
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|
249 setscreensize(); |
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250 if (can_output()) |
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251 refresh_progress_meter(); |
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252 |
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253 signal(SIGALRM, update_progress_meter); |
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254 signal(SIGWINCH, sig_winch); |
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255 alarm(UPDATE_INTERVAL); |
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256 } |
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257 |
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258 void |
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259 stop_progress_meter(void) |
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260 { |
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261 alarm(0); |
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262 |
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|
263 if (!can_output()) |
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|
264 return; |
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265 |
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266 /* Ensure we complete the progress */ |
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267 if (cur_pos != end_pos) |
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268 refresh_progress_meter(); |
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269 |
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270 atomicio(vwrite, STDOUT_FILENO, "\n", 1); |
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271 } |
287
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272 |
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273 static void |
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274 sig_winch(int sig) |
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275 { |
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276 win_resized = 1; |
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277 } |
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278 |
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279 static void |
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280 setscreensize(void) |
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281 { |
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282 struct winsize winsize; |
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283 |
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284 if (ioctl(STDOUT_FILENO, TIOCGWINSZ, &winsize) != -1 && |
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285 winsize.ws_col != 0) { |
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286 if (winsize.ws_col > MAX_WINSIZE) |
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287 win_size = MAX_WINSIZE; |
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288 else |
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289 win_size = winsize.ws_col; |
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290 } else |
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291 win_size = DEFAULT_WINSIZE; |
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292 win_size += 1; /* trailing \0 */ |
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293 } |
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294 #endif /* PROGRESS_METER */ |