Mercurial > hg
annotate mercurial/progress.py @ 47072:4c041c71ec01
revlog: introduce an explicit tracking of what the revlog is about
Since the dawn of time, people have been forced to rely to lossy introspection
of the index filename to determine what the purpose and role of the revlog they
encounter is. This is hacky, error prone, inflexible, abstraction-leaky,
<insert-your-own-complaints-here>.
In f63299ee7e4d Raphaël introduced a new attribute to track this information:
`revlog_kind`. However it is initialized in an odd place and various instances
end up not having it set. In addition is only tracking some of the information
we end up having to introspect in various pieces of code.
So we add a new attribute that holds more data and is more strictly enforced.
This work is done in collaboration with Raphaël.
The `revlog_kind` one will be removed/adapted in the next changeset. We expect
to be able to clean up various existing piece of code and to simplify coming
work around the newer revlog format.
Differential Revision: https://phab.mercurial-scm.org/D10352
author | Pierre-Yves David <pierre-yves.david@octobus.net> |
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date | Tue, 06 Apr 2021 05:20:24 +0200 |
parents | 89a2afe31e82 |
children | 6000f5b25c9b |
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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 |
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18 def spacejoin(*args): |
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19 return b' '.join(s for s in args if s) |
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20 |
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21 |
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22 def shouldprint(ui): |
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23 return not (ui.quiet or ui.plain(b'progress')) and ( |
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24 ui._isatty(ui.ferr) or ui.configbool(b'progress', b'assume-tty') |
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25 ) |
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26 |
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27 |
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28 def fmtremaining(seconds): |
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29 """format a number of remaining seconds in human readable way |
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30 |
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31 This will properly display seconds, minutes, hours, days if needed""" |
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32 if seconds < 60: |
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33 # i18n: format XX seconds as "XXs" |
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34 return _(b"%02ds") % seconds |
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35 minutes = seconds // 60 |
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36 if minutes < 60: |
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37 seconds -= minutes * 60 |
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38 # i18n: format X minutes and YY seconds as "XmYYs" |
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39 return _(b"%dm%02ds") % (minutes, seconds) |
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40 # we're going to ignore seconds in this case |
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41 minutes += 1 |
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42 hours = minutes // 60 |
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43 minutes -= hours * 60 |
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44 if hours < 30: |
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45 # i18n: format X hours and YY minutes as "XhYYm" |
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46 return _(b"%dh%02dm") % (hours, minutes) |
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47 # we're going to ignore minutes in this case |
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48 hours += 1 |
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49 days = hours // 24 |
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50 hours -= days * 24 |
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51 if days < 15: |
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52 # i18n: format X days and YY hours as "XdYYh" |
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53 return _(b"%dd%02dh") % (days, hours) |
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54 # we're going to ignore hours in this case |
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55 days += 1 |
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56 weeks = days // 7 |
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57 days -= weeks * 7 |
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58 if weeks < 55: |
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59 # i18n: format X weeks and YY days as "XwYYd" |
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60 return _(b"%dw%02dd") % (weeks, days) |
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61 # we're going to ignore days and treat a year as 52 weeks |
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62 weeks += 1 |
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63 years = weeks // 52 |
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64 weeks -= years * 52 |
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65 # i18n: format X years and YY weeks as "XyYYw" |
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66 return _(b"%dy%02dw") % (years, weeks) |
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67 |
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68 |
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69 # file_write() and file_flush() of Python 2 do not restart on EINTR if |
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70 # the file is attached to a "slow" device (e.g. a terminal) and raise |
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71 # IOError. We cannot know how many bytes would be written by file_write(), |
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72 # but a progress text is known to be short enough to be written by a |
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73 # single write() syscall, so we can just retry file_write() with the whole |
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74 # text. (issue5532) |
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75 # |
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76 # This should be a short-term workaround. We'll need to fix every occurrence |
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77 # of write() to a terminal or pipe. |
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78 def _eintrretry(func, *args): |
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79 while True: |
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80 try: |
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81 return func(*args) |
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82 except IOError as err: |
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83 if err.errno == errno.EINTR: |
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84 continue |
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85 raise |
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86 |
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87 |
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88 class progbar(object): |
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89 def __init__(self, ui): |
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90 self.ui = ui |
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91 self._refreshlock = threading.Lock() |
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92 self.resetstate() |
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93 |
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94 def resetstate(self): |
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95 self.topics = [] |
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96 self.topicstates = {} |
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97 self.starttimes = {} |
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98 self.startvals = {} |
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99 self.printed = False |
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100 self.lastprint = time.time() + float( |
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101 self.ui.config(b'progress', b'delay') |
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102 ) |
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103 self.curtopic = None |
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104 self.lasttopic = None |
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105 self.indetcount = 0 |
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106 self.refresh = float(self.ui.config(b'progress', b'refresh')) |
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107 self.changedelay = max( |
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108 3 * self.refresh, float(self.ui.config(b'progress', b'changedelay')) |
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109 ) |
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110 self.order = self.ui.configlist(b'progress', b'format') |
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111 self.estimateinterval = self.ui.configwith( |
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112 float, b'progress', b'estimateinterval' |
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113 ) |
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114 |
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115 def show(self, now, topic, pos, item, unit, total): |
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116 if not shouldprint(self.ui): |
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117 return |
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118 termwidth = self.width() |
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119 self.printed = True |
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120 head = b'' |
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121 needprogress = False |
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122 tail = b'' |
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123 for indicator in self.order: |
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124 add = b'' |
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125 if indicator == b'topic': |
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126 add = topic |
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127 elif indicator == b'number': |
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128 if total: |
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129 add = b'%*d/%d' % (len(str(total)), pos, total) |
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130 else: |
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131 add = b'%d' % pos |
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132 elif indicator.startswith(b'item') and item: |
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133 slice = b'end' |
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134 if b'-' in indicator: |
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135 wid = int(indicator.split(b'-')[1]) |
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136 elif b'+' in indicator: |
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137 slice = b'beginning' |
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138 wid = int(indicator.split(b'+')[1]) |
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139 else: |
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140 wid = 20 |
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141 if slice == b'end': |
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142 add = encoding.trim(item, wid, leftside=True) |
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143 else: |
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144 add = encoding.trim(item, wid) |
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145 add += (wid - encoding.colwidth(add)) * b' ' |
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146 elif indicator == b'bar': |
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147 add = b'' |
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148 needprogress = True |
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149 elif indicator == b'unit' and unit: |
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150 add = unit |
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151 elif indicator == b'estimate': |
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152 add = self.estimate(topic, pos, total, now) |
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153 elif indicator == b'speed': |
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154 add = self.speed(topic, pos, unit, now) |
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155 if not needprogress: |
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156 head = spacejoin(head, add) |
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157 else: |
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158 tail = spacejoin(tail, add) |
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159 if needprogress: |
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160 used = 0 |
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161 if head: |
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162 used += encoding.colwidth(head) + 1 |
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163 if tail: |
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164 used += encoding.colwidth(tail) + 1 |
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165 progwidth = termwidth - used - 3 |
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166 if total and pos <= total: |
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167 amt = pos * progwidth // total |
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168 bar = b'=' * (amt - 1) |
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169 if amt > 0: |
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170 bar += b'>' |
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171 bar += b' ' * (progwidth - amt) |
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172 else: |
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173 progwidth -= 3 |
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174 self.indetcount += 1 |
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175 # mod the count by twice the width so we can make the |
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176 # cursor bounce between the right and left sides |
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177 amt = self.indetcount % (2 * progwidth) |
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178 amt -= progwidth |
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179 bar = ( |
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180 b' ' * int(progwidth - abs(amt)) |
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181 + b'<=>' |
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182 + b' ' * int(abs(amt)) |
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183 ) |
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184 prog = b''.join((b'[', bar, b']')) |
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185 out = spacejoin(head, prog, tail) |
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186 else: |
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187 out = spacejoin(head, tail) |
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188 self._writeerr(b'\r' + encoding.trim(out, termwidth)) |
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189 self.lasttopic = topic |
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190 self._flusherr() |
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191 |
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192 def clear(self): |
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193 if not self.printed or not self.lastprint or not shouldprint(self.ui): |
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194 return |
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195 self._writeerr(b'\r%s\r' % (b' ' * self.width())) |
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196 self._flusherr() |
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197 if self.printed: |
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198 # force immediate re-paint of progress bar |
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199 self.lastprint = 0 |
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200 |
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201 def complete(self): |
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202 if not shouldprint(self.ui): |
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203 return |
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204 if self.ui.configbool(b'progress', b'clear-complete'): |
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205 self.clear() |
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206 else: |
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207 self._writeerr(b'\n') |
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208 self._flusherr() |
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209 |
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210 def _flusherr(self): |
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211 _eintrretry(self.ui.ferr.flush) |
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212 |
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213 def _writeerr(self, msg): |
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214 _eintrretry(self.ui.ferr.write, msg) |
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215 |
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216 def width(self): |
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217 tw = self.ui.termwidth() |
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218 return min(int(self.ui.config(b'progress', b'width', default=tw)), tw) |
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219 |
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220 def estimate(self, topic, pos, total, now): |
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221 if total is None: |
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222 return b'' |
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223 initialpos = self.startvals[topic] |
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224 target = total - initialpos |
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225 delta = pos - initialpos |
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226 if delta > 0: |
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227 elapsed = now - self.starttimes[topic] |
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228 seconds = (elapsed * (target - delta)) // delta + 1 |
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229 return fmtremaining(seconds) |
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230 return b'' |
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231 |
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232 def speed(self, topic, pos, unit, now): |
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233 initialpos = self.startvals[topic] |
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234 delta = pos - initialpos |
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235 elapsed = now - self.starttimes[topic] |
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236 if elapsed > 0: |
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237 return _(b'%d %s/sec') % (delta / elapsed, unit) |
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238 return b'' |
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239 |
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240 def _oktoprint(self, now): |
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241 '''Check if conditions are met to print - e.g. changedelay elapsed''' |
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242 if ( |
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243 self.lasttopic is None # first time we printed |
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244 # not a topic change |
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245 or self.curtopic == self.lasttopic |
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246 # it's been long enough we should print anyway |
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247 or now - self.lastprint >= self.changedelay |
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248 ): |
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249 return True |
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250 else: |
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251 return False |
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252 |
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253 def _calibrateestimate(self, topic, now, pos): |
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254 """Adjust starttimes and startvals for topic so ETA works better |
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255 |
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256 If progress is non-linear (ex. get much slower in the last minute), |
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257 it's more friendly to only use a recent time span for ETA and speed |
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258 calculation. |
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259 |
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260 [======================================> ] |
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261 ^^^^^^^ |
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262 estimateinterval, only use this for estimation |
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263 """ |
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264 interval = self.estimateinterval |
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265 if interval <= 0: |
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266 return |
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267 elapsed = now - self.starttimes[topic] |
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268 if elapsed > interval: |
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269 delta = pos - self.startvals[topic] |
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270 newdelta = delta * interval / elapsed |
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271 # If a stall happens temporarily, ETA could change dramatically |
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272 # frequently. This is to avoid such dramatical change and make ETA |
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273 # smoother. |
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274 if newdelta < 0.1: |
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275 return |
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276 self.startvals[topic] = pos - newdelta |
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277 self.starttimes[topic] = now - interval |
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278 |
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279 def progress(self, topic, pos, item=b'', unit=b'', total=None): |
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280 if pos is None: |
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281 self.closetopic(topic) |
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282 return |
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283 now = time.time() |
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284 with self._refreshlock: |
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285 if topic not in self.topics: |
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286 self.starttimes[topic] = now |
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287 self.startvals[topic] = pos |
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288 self.topics.append(topic) |
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289 self.topicstates[topic] = pos, item, unit, total |
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290 self.curtopic = topic |
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291 self._calibrateestimate(topic, now, pos) |
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292 if now - self.lastprint >= self.refresh and self.topics: |
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293 if self._oktoprint(now): |
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294 self.lastprint = now |
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295 self.show(now, topic, *self.topicstates[topic]) |
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296 |
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297 def closetopic(self, topic): |
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298 with self._refreshlock: |
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299 self.starttimes.pop(topic, None) |
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300 self.startvals.pop(topic, None) |
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301 self.topicstates.pop(topic, None) |
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302 # reset the progress bar if this is the outermost topic |
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303 if self.topics and self.topics[0] == topic and self.printed: |
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304 self.complete() |
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305 self.resetstate() |
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306 # truncate the list of topics assuming all topics within |
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307 # this one are also closed |
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308 if topic in self.topics: |
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309 self.topics = self.topics[: self.topics.index(topic)] |
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310 # reset the last topic to the one we just unwound to, |
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311 # so that higher-level topics will be stickier than |
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312 # lower-level topics |
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313 if self.topics: |
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314 self.lasttopic = self.topics[-1] |
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315 else: |
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316 self.lasttopic = None |