annotate mercurial/progress.py @ 35978:59e4a7781a36

sshpeer: implement peer for version 2 of wire protocol Since the protocol is now negotiated before we construct a peer instance, we can return the negotiated protocol from the handshake function and instantiate an appropriate peer class for the protocol. Version 2 of the SSH protocol is currently identical to version 1 post handshake. So our sshv2peer class just inherits from sshv1peer for the time being. This will obviously change over time. Differential Revision: https://phab.mercurial-scm.org/D2063
author Gregory Szorc <gregory.szorc@gmail.com>
date Tue, 06 Feb 2018 11:31:25 -0800
parents 54fa3db5becf
children d541042f32f6
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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 from __future__ import absolute_import
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9
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10 import errno
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11 import threading
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12 import time
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13
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14 from .i18n import _
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15 from . import encoding
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16
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17 def spacejoin(*args):
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18 return ' '.join(s for s in args if s)
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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('progress')) and (
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22 ui._isatty(ui.ferr) or ui.configbool('progress', 'assume-tty'))
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23
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24 def fmtremaining(seconds):
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25 """format a number of remaining seconds in human readable way
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26
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27 This will properly display seconds, minutes, hours, days if needed"""
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28 if seconds < 60:
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29 # i18n: format XX seconds as "XXs"
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30 return _("%02ds") % (seconds)
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31 minutes = seconds // 60
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32 if minutes < 60:
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33 seconds -= minutes * 60
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34 # i18n: format X minutes and YY seconds as "XmYYs"
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35 return _("%dm%02ds") % (minutes, seconds)
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36 # we're going to ignore seconds in this case
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37 minutes += 1
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38 hours = minutes // 60
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39 minutes -= hours * 60
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40 if hours < 30:
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41 # i18n: format X hours and YY minutes as "XhYYm"
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42 return _("%dh%02dm") % (hours, minutes)
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43 # we're going to ignore minutes in this case
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44 hours += 1
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45 days = hours // 24
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46 hours -= days * 24
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47 if days < 15:
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48 # i18n: format X days and YY hours as "XdYYh"
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49 return _("%dd%02dh") % (days, hours)
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50 # we're going to ignore hours in this case
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51 days += 1
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52 weeks = days // 7
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53 days -= weeks * 7
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54 if weeks < 55:
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55 # i18n: format X weeks and YY days as "XwYYd"
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56 return _("%dw%02dd") % (weeks, days)
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57 # we're going to ignore days and treat a year as 52 weeks
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58 weeks += 1
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59 years = weeks // 52
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60 weeks -= years * 52
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61 # i18n: format X years and YY weeks as "XyYYw"
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62 return _("%dy%02dw") % (years, weeks)
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63
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64 # file_write() and file_flush() of Python 2 do not restart on EINTR if
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65 # the file is attached to a "slow" device (e.g. a terminal) and raise
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66 # IOError. We cannot know how many bytes would be written by file_write(),
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67 # but a progress text is known to be short enough to be written by a
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68 # single write() syscall, so we can just retry file_write() with the whole
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69 # text. (issue5532)
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70 #
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71 # This should be a short-term workaround. We'll need to fix every occurrence
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72 # of write() to a terminal or pipe.
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73 def _eintrretry(func, *args):
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74 while True:
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75 try:
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76 return func(*args)
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77 except IOError as err:
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78 if err.errno == errno.EINTR:
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79 continue
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80 raise
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81
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82 class progbar(object):
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83 def __init__(self, ui):
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84 self.ui = ui
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85 self._refreshlock = threading.Lock()
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86 self.resetstate()
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87
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88 def resetstate(self):
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89 self.topics = []
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90 self.topicstates = {}
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91 self.starttimes = {}
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92 self.startvals = {}
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93 self.printed = False
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94 self.lastprint = time.time() + float(self.ui.config(
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95 'progress', 'delay'))
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96 self.curtopic = None
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97 self.lasttopic = None
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98 self.indetcount = 0
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99 self.refresh = float(self.ui.config(
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100 'progress', 'refresh'))
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101 self.changedelay = max(3 * self.refresh,
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102 float(self.ui.config(
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103 'progress', 'changedelay')))
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104 self.order = self.ui.configlist('progress', 'format')
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105 self.estimateinterval = self.ui.configwith(
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106 float, 'progress', 'estimateinterval')
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107
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108 def show(self, now, topic, pos, item, unit, total):
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109 if not shouldprint(self.ui):
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110 return
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111 termwidth = self.width()
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112 self.printed = True
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113 head = ''
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114 needprogress = False
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115 tail = ''
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116 for indicator in self.order:
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117 add = ''
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118 if indicator == 'topic':
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119 add = topic
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120 elif indicator == 'number':
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121 if total:
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diff changeset
122 add = ('% ' + str(len(str(total))) +
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123 's/%s') % (pos, total)
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124 else:
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diff changeset
125 add = str(pos)
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126 elif indicator.startswith('item') and item:
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127 slice = 'end'
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diff changeset
128 if '-' in indicator:
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129 wid = int(indicator.split('-')[1])
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130 elif '+' in indicator:
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131 slice = 'beginning'
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132 wid = int(indicator.split('+')[1])
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133 else:
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134 wid = 20
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135 if slice == 'end':
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136 add = encoding.trim(item, wid, leftside=True)
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137 else:
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diff changeset
138 add = encoding.trim(item, wid)
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139 add += (wid - encoding.colwidth(add)) * ' '
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140 elif indicator == 'bar':
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141 add = ''
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142 needprogress = True
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143 elif indicator == 'unit' and unit:
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144 add = unit
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145 elif indicator == 'estimate':
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146 add = self.estimate(topic, pos, total, now)
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147 elif indicator == 'speed':
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148 add = self.speed(topic, pos, unit, now)
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149 if not needprogress:
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diff changeset
150 head = spacejoin(head, add)
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151 else:
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diff changeset
152 tail = spacejoin(tail, add)
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153 if needprogress:
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diff changeset
154 used = 0
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155 if head:
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parents:
diff changeset
156 used += encoding.colwidth(head) + 1
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157 if tail:
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parents:
diff changeset
158 used += encoding.colwidth(tail) + 1
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diff changeset
159 progwidth = termwidth - used - 3
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160 if total and pos <= total:
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161 amt = pos * progwidth // total
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diff changeset
162 bar = '=' * (amt - 1)
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163 if amt > 0:
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diff changeset
164 bar += '>'
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diff changeset
165 bar += ' ' * (progwidth - amt)
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diff changeset
166 else:
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parents:
diff changeset
167 progwidth -= 3
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diff changeset
168 self.indetcount += 1
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diff changeset
169 # mod the count by twice the width so we can make the
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170 # cursor bounce between the right and left sides
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diff changeset
171 amt = self.indetcount % (2 * progwidth)
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172 amt -= progwidth
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diff changeset
173 bar = (' ' * int(progwidth - abs(amt)) + '<=>' +
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parents:
diff changeset
174 ' ' * int(abs(amt)))
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Alex Gaynor <agaynor@mozilla.com>
parents: 34314
diff changeset
175 prog = ''.join(('[', bar, ']'))
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176 out = spacejoin(head, prog, tail)
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diff changeset
177 else:
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diff changeset
178 out = spacejoin(head, tail)
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diff changeset
179 self._writeerr('\r' + encoding.trim(out, termwidth))
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180 self.lasttopic = topic
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181 self._flusherr()
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182
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183 def clear(self):
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184 if not self.printed or not self.lastprint or not shouldprint(self.ui):
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185 return
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186 self._writeerr('\r%s\r' % (' ' * self.width()))
26407
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187 if self.printed:
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188 # force immediate re-paint of progress bar
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189 self.lastprint = 0
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190
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191 def complete(self):
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192 if not shouldprint(self.ui):
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193 return
33249
391da1416038 configitems: register the 'progress.clear-complete' config
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 32049
diff changeset
194 if self.ui.configbool('progress', 'clear-complete'):
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195 self.clear()
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196 else:
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diff changeset
197 self._writeerr('\n')
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diff changeset
198 self._flusherr()
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199
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diff changeset
200 def _flusherr(self):
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diff changeset
201 _eintrretry(self.ui.ferr.flush)
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202
32048
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diff changeset
203 def _writeerr(self, msg):
32049
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diff changeset
204 _eintrretry(self.ui.ferr.write, msg)
32048
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diff changeset
205
25497
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206 def width(self):
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diff changeset
207 tw = self.ui.termwidth()
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208 return min(int(self.ui.config('progress', 'width', default=tw)), tw)
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209
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diff changeset
210 def estimate(self, topic, pos, total, now):
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parents:
diff changeset
211 if total is None:
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parents:
diff changeset
212 return ''
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parents:
diff changeset
213 initialpos = self.startvals[topic]
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parents:
diff changeset
214 target = total - initialpos
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parents:
diff changeset
215 delta = pos - initialpos
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parents:
diff changeset
216 if delta > 0:
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parents:
diff changeset
217 elapsed = now - self.starttimes[topic]
34313
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Jun Wu <quark@fb.com>
parents: 33499
diff changeset
218 seconds = (elapsed * (target - delta)) // delta + 1
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parents: 33499
diff changeset
219 return fmtremaining(seconds)
25497
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diff changeset
220 return ''
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parents:
diff changeset
221
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parents:
diff changeset
222 def speed(self, topic, pos, unit, now):
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parents:
diff changeset
223 initialpos = self.startvals[topic]
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parents:
diff changeset
224 delta = pos - initialpos
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parents:
diff changeset
225 elapsed = now - self.starttimes[topic]
34313
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parents: 33499
diff changeset
226 if elapsed > 0:
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parents:
diff changeset
227 return _('%d %s/sec') % (delta / elapsed, unit)
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parents:
diff changeset
228 return ''
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parents:
diff changeset
229
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Pierre-Yves David <pierre-yves.david@fb.com>
parents:
diff changeset
230 def _oktoprint(self, now):
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parents:
diff changeset
231 '''Check if conditions are met to print - e.g. changedelay elapsed'''
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parents:
diff changeset
232 if (self.lasttopic is None # first time we printed
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Pierre-Yves David <pierre-yves.david@fb.com>
parents:
diff changeset
233 # not a topic change
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Pierre-Yves David <pierre-yves.david@fb.com>
parents:
diff changeset
234 or self.curtopic == self.lasttopic
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parents:
diff changeset
235 # it's been long enough we should print anyway
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parents:
diff changeset
236 or now - self.lastprint >= self.changedelay):
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parents:
diff changeset
237 return True
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parents:
diff changeset
238 else:
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parents:
diff changeset
239 return False
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parents:
diff changeset
240
34314
a667f0ca1d5f progress: make ETA only consider progress made in the last minute
Jun Wu <quark@fb.com>
parents: 34313
diff changeset
241 def _calibrateestimate(self, topic, now, pos):
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242 '''Adjust starttimes and startvals for topic so ETA works better
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243
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244 If progress is non-linear (ex. get much slower in the last minute),
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245 it's more friendly to only use a recent time span for ETA and speed
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246 calculation.
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247
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248 [======================================> ]
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249 ^^^^^^^
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250 estimateinterval, only use this for estimation
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251 '''
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252 interval = self.estimateinterval
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253 if interval <= 0:
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254 return
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255 elapsed = now - self.starttimes[topic]
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256 if elapsed > interval:
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257 delta = pos - self.startvals[topic]
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258 newdelta = delta * interval / elapsed
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259 # If a stall happens temporarily, ETA could change dramatically
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260 # frequently. This is to avoid such dramatical change and make ETA
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261 # smoother.
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262 if newdelta < 0.1:
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263 return
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264 self.startvals[topic] = pos - newdelta
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265 self.starttimes[topic] = now - interval
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266
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267 def progress(self, topic, pos, item='', unit='', total=None):
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268 now = time.time()
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269 self._refreshlock.acquire()
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270 try:
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271 if pos is None:
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272 self.starttimes.pop(topic, None)
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273 self.startvals.pop(topic, None)
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274 self.topicstates.pop(topic, None)
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275 # reset the progress bar if this is the outermost topic
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276 if self.topics and self.topics[0] == topic and self.printed:
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277 self.complete()
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278 self.resetstate()
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279 # truncate the list of topics assuming all topics within
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280 # this one are also closed
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281 if topic in self.topics:
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282 self.topics = self.topics[:self.topics.index(topic)]
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283 # reset the last topic to the one we just unwound to,
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284 # so that higher-level topics will be stickier than
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285 # lower-level topics
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286 if self.topics:
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287 self.lasttopic = self.topics[-1]
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288 else:
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289 self.lasttopic = None
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290 else:
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291 if topic not in self.topics:
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292 self.starttimes[topic] = now
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293 self.startvals[topic] = pos
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294 self.topics.append(topic)
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295 self.topicstates[topic] = pos, item, unit, total
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296 self.curtopic = topic
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297 self._calibrateestimate(topic, now, pos)
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298 if now - self.lastprint >= self.refresh and self.topics:
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299 if self._oktoprint(now):
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300 self.lastprint = now
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301 self.show(now, topic, *self.topicstates[topic])
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302 finally:
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303 self._refreshlock.release()