Mercurial > hg
annotate mercurial/progress.py @ 49302:ee4537e365c8
py3: remove retry on EINTR errno
Since the implementation of PEP 475 (Python 3.5), Python retries system calls
failing with EINTR. Therefore we don’t need the logic that retries it in Python
code.
author | Manuel Jacob <me@manueljacob.de> |
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date | Tue, 31 May 2022 04:11:34 +0200 |
parents | 642e31cb55f0 |
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1 # progress.py progress bars related code |
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2 # |
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3 # Copyright (C) 2010 Augie Fackler <durin42@gmail.com> |
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4 # |
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5 # This software may be used and distributed according to the terms of the |
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6 # GNU General Public License version 2 or any later version. |
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7 |
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8 |
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9 import threading |
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10 import time |
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11 |
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12 from .i18n import _ |
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13 from . import encoding |
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14 |
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15 |
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16 def spacejoin(*args): |
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17 return b' '.join(s for s in args if s) |
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18 |
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19 |
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20 def shouldprint(ui): |
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21 return not (ui.quiet or ui.plain(b'progress')) and ( |
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22 ui._isatty(ui.ferr) or ui.configbool(b'progress', b'assume-tty') |
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23 ) |
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24 |
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25 |
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26 def fmtremaining(seconds): |
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27 """format a number of remaining seconds in human readable way |
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28 |
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29 This will properly display seconds, minutes, hours, days if needed""" |
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30 if seconds < 60: |
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31 # i18n: format XX seconds as "XXs" |
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32 return _(b"%02ds") % seconds |
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33 minutes = seconds // 60 |
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34 if minutes < 60: |
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35 seconds -= minutes * 60 |
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36 # i18n: format X minutes and YY seconds as "XmYYs" |
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37 return _(b"%dm%02ds") % (minutes, seconds) |
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38 # we're going to ignore seconds in this case |
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39 minutes += 1 |
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40 hours = minutes // 60 |
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41 minutes -= hours * 60 |
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42 if hours < 30: |
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43 # i18n: format X hours and YY minutes as "XhYYm" |
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44 return _(b"%dh%02dm") % (hours, minutes) |
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45 # we're going to ignore minutes in this case |
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46 hours += 1 |
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47 days = hours // 24 |
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48 hours -= days * 24 |
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49 if days < 15: |
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50 # i18n: format X days and YY hours as "XdYYh" |
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51 return _(b"%dd%02dh") % (days, hours) |
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52 # we're going to ignore hours in this case |
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53 days += 1 |
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54 weeks = days // 7 |
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55 days -= weeks * 7 |
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56 if weeks < 55: |
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57 # i18n: format X weeks and YY days as "XwYYd" |
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58 return _(b"%dw%02dd") % (weeks, days) |
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59 # we're going to ignore days and treat a year as 52 weeks |
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60 weeks += 1 |
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61 years = weeks // 52 |
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62 weeks -= years * 52 |
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63 # i18n: format X years and YY weeks as "XyYYw" |
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64 return _(b"%dy%02dw") % (years, weeks) |
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65 |
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66 |
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67 class progbar: |
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68 def __init__(self, ui): |
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69 self.ui = ui |
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70 self._refreshlock = threading.Lock() |
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71 self.resetstate() |
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72 |
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73 def resetstate(self): |
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74 self.topics = [] |
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75 self.topicstates = {} |
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76 self.starttimes = {} |
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77 self.startvals = {} |
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78 self.printed = False |
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79 self.lastprint = time.time() + float( |
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80 self.ui.config(b'progress', b'delay') |
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81 ) |
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82 self.curtopic = None |
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83 self.lasttopic = None |
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84 self.indetcount = 0 |
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85 self.refresh = float(self.ui.config(b'progress', b'refresh')) |
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86 self.changedelay = max( |
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87 3 * self.refresh, float(self.ui.config(b'progress', b'changedelay')) |
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88 ) |
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89 self.order = self.ui.configlist(b'progress', b'format') |
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90 self.estimateinterval = self.ui.configwith( |
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91 float, b'progress', b'estimateinterval' |
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92 ) |
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93 |
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94 def show(self, now, topic, pos, item, unit, total): |
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95 if not shouldprint(self.ui): |
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96 return |
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97 termwidth = self.width() |
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98 self.printed = True |
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99 head = b'' |
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100 needprogress = False |
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101 tail = b'' |
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102 for indicator in self.order: |
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103 add = b'' |
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104 if indicator == b'topic': |
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105 add = topic |
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106 elif indicator == b'number': |
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107 if total: |
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108 add = b'%*d/%d' % (len(str(total)), pos, total) |
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109 else: |
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110 add = b'%d' % pos |
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111 elif indicator.startswith(b'item') and item: |
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112 slice = b'end' |
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113 if b'-' in indicator: |
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114 wid = int(indicator.split(b'-')[1]) |
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115 elif b'+' in indicator: |
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116 slice = b'beginning' |
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117 wid = int(indicator.split(b'+')[1]) |
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118 else: |
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119 wid = 20 |
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120 if slice == b'end': |
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121 add = encoding.trim(item, wid, leftside=True) |
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122 else: |
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123 add = encoding.trim(item, wid) |
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124 add += (wid - encoding.colwidth(add)) * b' ' |
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125 elif indicator == b'bar': |
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126 add = b'' |
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127 needprogress = True |
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128 elif indicator == b'unit' and unit: |
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129 add = unit |
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130 elif indicator == b'estimate': |
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131 add = self.estimate(topic, pos, total, now) |
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132 elif indicator == b'speed': |
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133 add = self.speed(topic, pos, unit, now) |
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134 if not needprogress: |
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135 head = spacejoin(head, add) |
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136 else: |
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137 tail = spacejoin(tail, add) |
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138 if needprogress: |
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139 used = 0 |
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140 if head: |
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141 used += encoding.colwidth(head) + 1 |
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142 if tail: |
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143 used += encoding.colwidth(tail) + 1 |
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144 progwidth = termwidth - used - 3 |
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145 if total and pos <= total: |
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146 amt = pos * progwidth // total |
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147 bar = b'=' * (amt - 1) |
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148 if amt > 0: |
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149 bar += b'>' |
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150 bar += b' ' * (progwidth - amt) |
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151 else: |
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152 progwidth -= 3 |
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153 self.indetcount += 1 |
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154 # mod the count by twice the width so we can make the |
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155 # cursor bounce between the right and left sides |
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156 amt = self.indetcount % (2 * progwidth) |
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157 amt -= progwidth |
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158 bar = ( |
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159 b' ' * int(progwidth - abs(amt)) |
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160 + b'<=>' |
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161 + b' ' * int(abs(amt)) |
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162 ) |
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163 prog = b''.join((b'[', bar, b']')) |
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164 out = spacejoin(head, prog, tail) |
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165 else: |
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166 out = spacejoin(head, tail) |
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167 self._writeerr(b'\r' + encoding.trim(out, termwidth)) |
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168 self.lasttopic = topic |
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169 self._flusherr() |
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170 |
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171 def clear(self): |
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172 if not self.printed or not self.lastprint or not shouldprint(self.ui): |
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173 return |
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174 self._writeerr(b'\r%s\r' % (b' ' * self.width())) |
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175 self._flusherr() |
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176 if self.printed: |
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177 # force immediate re-paint of progress bar |
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178 self.lastprint = 0 |
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179 |
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180 def complete(self): |
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181 if not shouldprint(self.ui): |
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182 return |
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183 if self.ui.configbool(b'progress', b'clear-complete'): |
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184 self.clear() |
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185 else: |
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186 self._writeerr(b'\n') |
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187 self._flusherr() |
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188 |
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189 def _flusherr(self): |
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190 self.ui.ferr.flush() |
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191 |
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192 def _writeerr(self, msg): |
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193 self.ui.ferr.write(msg) |
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194 |
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195 def width(self): |
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196 tw = self.ui.termwidth() |
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197 return min(int(self.ui.config(b'progress', b'width', default=tw)), tw) |
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198 |
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199 def estimate(self, topic, pos, total, now): |
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200 if total is None: |
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201 return b'' |
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202 initialpos = self.startvals[topic] |
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203 target = total - initialpos |
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204 delta = pos - initialpos |
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205 if delta > 0: |
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206 elapsed = now - self.starttimes[topic] |
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207 seconds = (elapsed * (target - delta)) // delta + 1 |
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208 return fmtremaining(seconds) |
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209 return b'' |
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210 |
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211 def speed(self, topic, pos, unit, now): |
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212 initialpos = self.startvals[topic] |
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213 delta = pos - initialpos |
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214 elapsed = now - self.starttimes[topic] |
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215 if elapsed > 0: |
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216 return _(b'%d %s/sec') % (delta / elapsed, unit) |
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217 return b'' |
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218 |
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219 def _oktoprint(self, now): |
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220 '''Check if conditions are met to print - e.g. changedelay elapsed''' |
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221 if ( |
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222 self.lasttopic is None # first time we printed |
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223 # not a topic change |
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224 or self.curtopic == self.lasttopic |
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225 # it's been long enough we should print anyway |
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226 or now - self.lastprint >= self.changedelay |
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227 ): |
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228 return True |
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229 else: |
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230 return False |
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231 |
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232 def _calibrateestimate(self, topic, now, pos): |
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233 """Adjust starttimes and startvals for topic so ETA works better |
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234 |
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235 If progress is non-linear (ex. get much slower in the last minute), |
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236 it's more friendly to only use a recent time span for ETA and speed |
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237 calculation. |
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238 |
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239 [======================================> ] |
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240 ^^^^^^^ |
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241 estimateinterval, only use this for estimation |
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242 """ |
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243 interval = self.estimateinterval |
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244 if interval <= 0: |
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245 return |
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246 elapsed = now - self.starttimes[topic] |
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247 if elapsed > interval: |
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248 delta = pos - self.startvals[topic] |
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249 newdelta = delta * interval / elapsed |
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250 # If a stall happens temporarily, ETA could change dramatically |
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251 # frequently. This is to avoid such dramatical change and make ETA |
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252 # smoother. |
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253 if newdelta < 0.1: |
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254 return |
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255 self.startvals[topic] = pos - newdelta |
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256 self.starttimes[topic] = now - interval |
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257 |
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258 def progress(self, topic, pos, item=b'', unit=b'', total=None): |
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259 if pos is None: |
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260 self.closetopic(topic) |
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261 return |
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262 now = time.time() |
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263 with self._refreshlock: |
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264 if topic not in self.topics: |
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265 self.starttimes[topic] = now |
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266 self.startvals[topic] = pos |
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267 self.topics.append(topic) |
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268 self.topicstates[topic] = pos, item, unit, total |
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269 self.curtopic = topic |
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270 self._calibrateestimate(topic, now, pos) |
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271 if now - self.lastprint >= self.refresh and self.topics: |
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272 if self._oktoprint(now): |
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273 self.lastprint = now |
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274 self.show(now, topic, *self.topicstates[topic]) |
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275 |
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276 def closetopic(self, topic): |
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277 with self._refreshlock: |
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278 self.starttimes.pop(topic, None) |
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279 self.startvals.pop(topic, None) |
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280 self.topicstates.pop(topic, None) |
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281 # reset the progress bar if this is the outermost topic |
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282 if self.topics and self.topics[0] == topic and self.printed: |
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283 self.complete() |
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284 self.resetstate() |
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285 # truncate the list of topics assuming all topics within |
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286 # this one are also closed |
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287 if topic in self.topics: |
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288 self.topics = self.topics[: self.topics.index(topic)] |
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289 # reset the last topic to the one we just unwound to, |
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290 # so that higher-level topics will be stickier than |
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291 # lower-level topics |
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292 if self.topics: |
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293 self.lasttopic = self.topics[-1] |
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294 else: |
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295 self.lasttopic = None |