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annotate hgext/progress.py @ 13132:24e3349cba8e

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progress: refactor for readability and show XXs instead of 0mXXs.
author Augie Fackler <durin42@gmail.com>
date Thu, 09 Dec 2010 17:33:40 -0600
parents c9ae7e096994
children f4dd6aa16805
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1 # progress.py show progress bars for some actions
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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 program is free software; you can redistribute it and/or modify it
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6 # under the terms of the GNU General Public License as published by the
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7 # Free Software Foundation; either version 2 of the License, or (at your
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8 # option) any later version.
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9 #
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10 # This program is distributed in the hope that it will be useful, but
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11 # WITHOUT ANY WARRANTY; without even the implied warranty of
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12 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
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13 # Public License for more details.
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14 #
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15 # You should have received a copy of the GNU General Public License along
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16 # with this program; if not, write to the Free Software Foundation, Inc.,
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17 # 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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18
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19 """show progress bars for some actions
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20
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21 This extension uses the progress information logged by hg commands
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22 to draw progress bars that are as informative as possible. Some progress
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23 bars only offer indeterminate information, while others have a definite
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24 end point.
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25
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26 The following settings are available::
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27
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28 [progress]
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29 delay = 3 # number of seconds (float) before showing the progress bar
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30 refresh = 0.1 # time in seconds between refreshes of the progress bar
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31 format = topic bar number # format of the progress bar
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32 width = <none> # if set, the maximum width of the progress information
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33 # (that is, min(width, term width) will be used)
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34 clear-complete = True # clear the progress bar after it's done
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35 disable = False # if true, don't show a progress bar
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36 assume-tty = False # if true, ALWAYS show a progress bar, unless
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37 # disable is given
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38
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39 Valid entries for the format field are topic, bar, number, unit, and
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40 item. item defaults to the last 20 characters of the item, but this
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41 can be changed by adding either ``-<num>`` which would take the last
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42 num characters, or ``+<num>`` for the first num characters.
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43 """
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44
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45 import sys
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46 import time
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47
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48 from mercurial.i18n import _
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49 from mercurial import util
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50
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51 def spacejoin(*args):
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52 return ' '.join(s for s in args if s)
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53
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54 def shouldprint(ui):
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55 return (getattr(sys.stderr, 'isatty', None) and
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56 (sys.stderr.isatty() or ui.configbool('progress', 'assume-tty')))
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57
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58 def fmtremaining(seconds):
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59 if seconds < 60:
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60 return _("%02ds") % (seconds)
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61 minutes = seconds // 60
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62 if minutes < 60:
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63 seconds -= minutes * 60
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64 return _("%dm%02ds") % (minutes, seconds)
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65 # we're going to ignore seconds in this case
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66 minutes += 1
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67 hours = minutes // 60
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68 minutes -= hours * 60
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69 return _("%dh%02dm") % (hours, minutes)
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70
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71 class progbar(object):
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72 def __init__(self, ui):
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73 self.ui = ui
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74 self.resetstate()
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75
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76 def resetstate(self):
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77 self.topics = []
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78 self.topicstates = {}
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79 self.starttimes = {}
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80 self.startvals = {}
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81 self.printed = False
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82 self.lastprint = time.time() + float(self.ui.config(
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83 'progress', 'delay', default=3))
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84 self.indetcount = 0
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85 self.refresh = float(self.ui.config(
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86 'progress', 'refresh', default=0.1))
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87 self.order = self.ui.configlist(
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88 'progress', 'format',
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89 default=['topic', 'bar', 'number'])
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90
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91 def show(self, now, topic, pos, item, unit, total):
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92 if not shouldprint(self.ui):
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93 return
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94 termwidth = self.width()
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95 self.printed = True
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96 head = ''
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97 needprogress = False
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98 tail = ''
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99 for indicator in self.order:
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100 add = ''
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101 if indicator == 'topic':
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102 add = topic
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103 elif indicator == 'number':
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104 if total:
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105 add = ('% ' + str(len(str(total))) +
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106 's/%s') % (pos, total)
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107 else:
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108 add = str(pos)
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109 elif indicator.startswith('item') and item:
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110 slice = 'end'
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111 if '-' in indicator:
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112 wid = int(indicator.split('-')[1])
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113 elif '+' in indicator:
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114 slice = 'beginning'
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115 wid = int(indicator.split('+')[1])
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116 else:
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117 wid = 20
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118 if slice == 'end':
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119 add = item[-wid:]
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120 else:
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121 add = item[:wid]
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122 add += (wid - len(add)) * ' '
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123 elif indicator == 'bar':
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124 add = ''
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125 needprogress = True
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126 elif indicator == 'unit' and unit:
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127 add = unit
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128 if not needprogress:
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129 head = spacejoin(head, add)
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130 else:
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131 tail = spacejoin(add, tail)
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132 if needprogress:
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133 used = 0
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134 if head:
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135 used += len(head) + 1
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136 if tail:
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137 used += len(tail) + 1
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138 progwidth = termwidth - used - 3
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139 if total and pos <= total:
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140 initial = self.startvals[topic]
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141 target = total - initial
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142 delta = pos - initial
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143 if delta > 0:
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144 elapsed = now - self.starttimes[topic]
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145 if elapsed > float(
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146 self.ui.config('progress', 'estimate', default=2)):
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147 seconds = (elapsed * (target - delta)) // delta + 1
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148 remaining = fmtremaining(seconds)
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149 progwidth -= len(remaining) + 1
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150 tail = spacejoin(tail, remaining)
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151 amt = pos * progwidth // total
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152 bar = '=' * (amt - 1)
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153 if amt > 0:
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154 bar += '>'
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155 bar += ' ' * (progwidth - amt)
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156 else:
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157 progwidth -= 3
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158 self.indetcount += 1
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159 # mod the count by twice the width so we can make the
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160 # cursor bounce between the right and left sides
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161 amt = self.indetcount % (2 * progwidth)
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162 amt -= progwidth
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163 bar = (' ' * int(progwidth - abs(amt)) + '<=>' +
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164 ' ' * int(abs(amt)))
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165 prog = ''.join(('[', bar , ']'))
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166 out = spacejoin(head, prog, tail)
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167 else:
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168 out = spacejoin(head, tail)
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169 sys.stderr.write('\r' + out[:termwidth])
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170 sys.stderr.flush()
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171
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172 def clear(self):
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173 if not shouldprint(self.ui):
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174 return
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175 sys.stderr.write('\r%s\r' % (' ' * self.width()))
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176
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177 def complete(self):
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178 if not shouldprint(self.ui):
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179 return
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180 if self.ui.configbool('progress', 'clear-complete', default=True):
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181 self.clear()
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182 else:
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183 sys.stderr.write('\n')
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184 sys.stderr.flush()
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185
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186 def width(self):
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187 tw = self.ui.termwidth()
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188 return min(int(self.ui.config('progress', 'width', default=tw)), tw)
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189
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190 def progress(self, topic, pos, item='', unit='', total=None):
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191 now = time.time()
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192 if pos is None:
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193 self.starttimes.pop(topic, None)
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194 self.startvals.pop(topic, None)
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195 self.topicstates.pop(topic, None)
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196 # reset the progress bar if this is the outermost topic
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197 if self.topics and self.topics[0] == topic and self.printed:
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198 self.complete()
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199 self.resetstate()
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200 # truncate the list of topics assuming all topics within
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201 # this one are also closed
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202 if topic in self.topics:
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203 self.topics = self.topics[:self.topics.index(topic)]
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204 else:
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205 if topic not in self.topics:
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206 self.starttimes[topic] = now
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207 self.startvals[topic] = pos
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208 self.topics.append(topic)
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209 self.topicstates[topic] = pos, item, unit, total
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210 if now - self.lastprint >= self.refresh and self.topics:
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211 self.lastprint = now
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212 current = self.topics[-1]
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213 self.show(now, topic, *self.topicstates[topic])
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214
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215 def uisetup(ui):
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216 class progressui(ui.__class__):
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217 _progbar = None
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218
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219 def progress(self, *args, **opts):
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220 self._progbar.progress(*args, **opts)
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221 return super(progressui, self).progress(*args, **opts)
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222
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223 def write(self, *args, **opts):
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224 if self._progbar.printed:
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225 self._progbar.clear()
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226 return super(progressui, self).write(*args, **opts)
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227
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228 def write_err(self, *args, **opts):
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229 if self._progbar.printed:
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230 self._progbar.clear()
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231 return super(progressui, self).write_err(*args, **opts)
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232
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parents: 10523
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233 # Apps that derive a class from ui.ui() can use
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234 # setconfig('progress', 'disable', 'True') to disable this extension
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235 if ui.configbool('progress', 'disable'):
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parents: 10523
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236 return
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237 if shouldprint(ui) and not ui.debugflag and not ui.quiet:
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238 ui.__class__ = progressui
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239 # we instantiate one globally shared progress bar to avoid
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240 # competing progress bars when multiple UI objects get created
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241 if not progressui._progbar:
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parents: 11458
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242 progressui._progbar = progbar(ui)
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243
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244 def reposetup(ui, repo):
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245 uisetup(repo.ui)