Mercurial > hg
annotate hgext/fsmonitor/__init__.py @ 28433:3b67f27bb908
fsmonitor: new experimental extension
Extension to plug into a Watchman daemon, speeding up hg status calls by
relying on OS events to tell us what files have changed.
Originally developed at https://bitbucket.org/facebook/hgwatchman
author | Martijn Pieters <mjpieters@fb.com> |
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date | Thu, 03 Mar 2016 14:29:19 +0000 |
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children | 49d65663d7e4 |
rev | line source |
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1 # __init__.py - fsmonitor initialization and overrides |
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2 # |
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3 # Copyright 2013-2016 Facebook, Inc. |
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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 '''Faster status operations with the Watchman file monitor (EXPERIMENTAL) |
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9 |
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10 Integrates the file-watching program Watchman with Mercurial to produce faster |
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11 status results. |
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12 |
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13 On a particular Linux system, for a real-world repository with over 400,000 |
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14 files hosted on ext4, vanilla `hg status` takes 1.3 seconds. On the same |
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15 system, with fsmonitor it takes about 0.3 seconds. |
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16 |
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17 fsmonitor requires no configuration -- it will tell Watchman about your |
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18 repository as necessary. You'll need to install Watchman from |
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19 https://facebook.github.io/watchman/ and make sure it is in your PATH. |
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20 |
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21 The following configuration options exist: |
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22 |
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23 :: |
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24 |
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25 [fsmonitor] |
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26 mode = {off, on, paranoid} |
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27 |
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28 When `mode = off`, fsmonitor will disable itself (similar to not loading the |
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29 extension at all). When `mode = on`, fsmonitor will be enabled (the default). |
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30 When `mode = paranoid`, fsmonitor will query both Watchman and the filesystem, |
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31 and ensure that the results are consistent. |
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32 |
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33 :: |
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34 |
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35 [fsmonitor] |
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36 timeout = (float) |
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37 |
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38 A value, in seconds, that determines how long fsmonitor will wait for Watchman |
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39 to return results. Defaults to `2.0`. |
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40 |
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41 :: |
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42 |
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43 [fsmonitor] |
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44 blacklistusers = (list of userids) |
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45 |
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46 A list of usernames for which fsmonitor will disable itself altogether. |
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47 |
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48 :: |
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49 |
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50 [fsmonitor] |
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51 walk_on_invalidate = (boolean) |
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52 |
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53 Whether or not to walk the whole repo ourselves when our cached state has been |
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54 invalidated, for example when Watchman has been restarted or .hgignore rules |
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55 have been changed. Walking the repo in that case can result in competing for |
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56 I/O with Watchman. For large repos it is recommended to set this value to |
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57 false. You may wish to set this to true if you have a very fast filesystem |
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58 that can outpace the IPC overhead of getting the result data for the full repo |
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59 from Watchman. Defaults to false. |
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60 |
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61 fsmonitor is incompatible with the largefiles and eol extensions, and |
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62 will disable itself if any of those are active. |
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63 |
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64 ''' |
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65 |
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66 # Platforms Supported |
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67 # =================== |
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68 # |
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69 # **Linux:** *Stable*. Watchman and fsmonitor are both known to work reliably, |
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70 # even under severe loads. |
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71 # |
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72 # **Mac OS X:** *Stable*. The Mercurial test suite passes with fsmonitor |
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73 # turned on, on case-insensitive HFS+. There has been a reasonable amount of |
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74 # user testing under normal loads. |
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75 # |
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76 # **Solaris, BSD:** *Alpha*. watchman and fsmonitor are believed to work, but |
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77 # very little testing has been done. |
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78 # |
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79 # **Windows:** *Alpha*. Not in a release version of watchman or fsmonitor yet. |
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80 # |
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81 # Known Issues |
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82 # ============ |
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83 # |
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84 # * fsmonitor will disable itself if any of the following extensions are |
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85 # enabled: largefiles, inotify, eol; or if the repository has subrepos. |
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86 # * fsmonitor will produce incorrect results if nested repos that are not |
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87 # subrepos exist. *Workaround*: add nested repo paths to your `.hgignore`. |
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88 # |
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89 # The issues related to nested repos and subrepos are probably not fundamental |
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90 # ones. Patches to fix them are welcome. |
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91 |
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92 from __future__ import absolute_import |
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93 |
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94 import os |
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95 import stat |
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96 import sys |
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97 |
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98 from mercurial import ( |
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99 context, |
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100 extensions, |
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101 localrepo, |
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102 pathutil, |
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103 scmutil, |
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104 util, |
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105 ) |
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106 from mercurial import match as matchmod |
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107 from mercurial.i18n import _ |
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108 |
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109 from . import ( |
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110 state, |
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111 watchmanclient, |
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112 ) |
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113 |
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114 # Note for extension authors: ONLY specify testedwith = 'internal' for |
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115 # extensions which SHIP WITH MERCURIAL. Non-mainline extensions should |
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116 # be specifying the version(s) of Mercurial they are tested with, or |
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117 # leave the attribute unspecified. |
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118 testedwith = 'internal' |
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119 |
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120 # This extension is incompatible with the following blacklisted extensions |
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121 # and will disable itself when encountering one of these: |
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122 _blacklist = ['largefiles', 'eol'] |
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123 |
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124 def _handleunavailable(ui, state, ex): |
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125 """Exception handler for Watchman interaction exceptions""" |
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126 if isinstance(ex, watchmanclient.Unavailable): |
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127 if ex.warn: |
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128 ui.warn(str(ex) + '\n') |
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129 if ex.invalidate: |
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130 state.invalidate() |
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131 ui.log('fsmonitor', 'Watchman unavailable: %s\n', ex.msg) |
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132 else: |
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133 ui.log('fsmonitor', 'Watchman exception: %s\n', ex) |
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134 |
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135 def _hashignore(ignore): |
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136 """Calculate hash for ignore patterns and filenames |
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137 |
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138 If this information changes between Mercurial invocations, we can't |
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139 rely on Watchman information anymore and have to re-scan the working |
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140 copy. |
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141 |
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142 """ |
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143 sha1 = util.sha1() |
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144 if util.safehasattr(ignore, 'includepat'): |
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145 sha1.update(ignore.includepat) |
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146 sha1.update('\0\0') |
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147 if util.safehasattr(ignore, 'excludepat'): |
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148 sha1.update(ignore.excludepat) |
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149 sha1.update('\0\0') |
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150 if util.safehasattr(ignore, 'patternspat'): |
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151 sha1.update(ignore.patternspat) |
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152 sha1.update('\0\0') |
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153 if util.safehasattr(ignore, '_files'): |
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154 for f in ignore._files: |
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155 sha1.update(f) |
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156 sha1.update('\0') |
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157 return sha1.hexdigest() |
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158 |
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159 def overridewalk(orig, self, match, subrepos, unknown, ignored, full=True): |
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160 '''Replacement for dirstate.walk, hooking into Watchman. |
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161 |
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162 Whenever full is False, ignored is False, and the Watchman client is |
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163 available, use Watchman combined with saved state to possibly return only a |
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164 subset of files.''' |
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165 def bail(): |
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166 return orig(match, subrepos, unknown, ignored, full=True) |
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167 |
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168 if full or ignored or not self._watchmanclient.available(): |
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169 return bail() |
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170 state = self._fsmonitorstate |
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171 clock, ignorehash, notefiles = state.get() |
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172 if not clock: |
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173 if state.walk_on_invalidate: |
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174 return bail() |
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175 # Initial NULL clock value, see |
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176 # https://facebook.github.io/watchman/docs/clockspec.html |
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177 clock = 'c:0:0' |
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178 notefiles = [] |
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179 |
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180 def fwarn(f, msg): |
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181 self._ui.warn('%s: %s\n' % (self.pathto(f), msg)) |
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182 return False |
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183 |
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184 def badtype(mode): |
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185 kind = _('unknown') |
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186 if stat.S_ISCHR(mode): |
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187 kind = _('character device') |
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188 elif stat.S_ISBLK(mode): |
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189 kind = _('block device') |
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190 elif stat.S_ISFIFO(mode): |
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191 kind = _('fifo') |
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192 elif stat.S_ISSOCK(mode): |
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193 kind = _('socket') |
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194 elif stat.S_ISDIR(mode): |
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195 kind = _('directory') |
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196 return _('unsupported file type (type is %s)') % kind |
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197 |
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198 ignore = self._ignore |
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199 dirignore = self._dirignore |
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200 if unknown: |
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201 if _hashignore(ignore) != ignorehash and clock != 'c:0:0': |
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202 # ignore list changed -- can't rely on Watchman state any more |
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203 if state.walk_on_invalidate: |
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204 return bail() |
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205 notefiles = [] |
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206 clock = 'c:0:0' |
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207 else: |
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208 # always ignore |
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209 ignore = util.always |
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210 dirignore = util.always |
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211 |
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212 matchfn = match.matchfn |
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213 matchalways = match.always() |
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214 dmap = self._map |
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215 nonnormalset = getattr(self, '_nonnormalset', None) |
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216 |
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217 copymap = self._copymap |
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218 getkind = stat.S_IFMT |
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219 dirkind = stat.S_IFDIR |
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220 regkind = stat.S_IFREG |
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221 lnkkind = stat.S_IFLNK |
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222 join = self._join |
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223 normcase = util.normcase |
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224 fresh_instance = False |
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225 |
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226 exact = skipstep3 = False |
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227 if matchfn == match.exact: # match.exact |
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228 exact = True |
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229 dirignore = util.always # skip step 2 |
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230 elif match.files() and not match.anypats(): # match.match, no patterns |
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231 skipstep3 = True |
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232 |
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233 if not exact and self._checkcase: |
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234 # note that even though we could receive directory entries, we're only |
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235 # interested in checking if a file with the same name exists. So only |
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236 # normalize files if possible. |
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237 normalize = self._normalizefile |
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238 skipstep3 = False |
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239 else: |
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240 normalize = None |
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241 |
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242 # step 1: find all explicit files |
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243 results, work, dirsnotfound = self._walkexplicit(match, subrepos) |
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244 |
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245 skipstep3 = skipstep3 and not (work or dirsnotfound) |
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246 work = [d for d in work if not dirignore(d[0])] |
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247 |
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248 if not work and (exact or skipstep3): |
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249 for s in subrepos: |
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250 del results[s] |
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251 del results['.hg'] |
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252 return results |
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253 |
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254 # step 2: query Watchman |
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255 try: |
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256 # Use the user-configured timeout for the query. |
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257 # Add a little slack over the top of the user query to allow for |
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258 # overheads while transferring the data |
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259 self._watchmanclient.settimeout(state.timeout + 0.1) |
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260 result = self._watchmanclient.command('query', { |
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261 'fields': ['mode', 'mtime', 'size', 'exists', 'name'], |
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262 'since': clock, |
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263 'expression': [ |
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264 'not', [ |
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265 'anyof', ['dirname', '.hg'], |
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266 ['name', '.hg', 'wholename'] |
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267 ] |
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268 ], |
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269 'sync_timeout': int(state.timeout * 1000), |
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270 'empty_on_fresh_instance': state.walk_on_invalidate, |
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271 }) |
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272 except Exception as ex: |
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273 _handleunavailable(self._ui, state, ex) |
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274 self._watchmanclient.clearconnection() |
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275 return bail() |
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276 else: |
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277 # We need to propagate the last observed clock up so that we |
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278 # can use it for our next query |
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279 state.setlastclock(result['clock']) |
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280 if result['is_fresh_instance']: |
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281 if state.walk_on_invalidate: |
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282 state.invalidate() |
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283 return bail() |
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284 fresh_instance = True |
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285 # Ignore any prior noteable files from the state info |
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286 notefiles = [] |
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287 |
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288 # for file paths which require normalization and we encounter a case |
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289 # collision, we store our own foldmap |
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290 if normalize: |
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291 foldmap = dict((normcase(k), k) for k in results) |
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292 |
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293 switch_slashes = os.sep == '\\' |
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294 # The order of the results is, strictly speaking, undefined. |
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295 # For case changes on a case insensitive filesystem we may receive |
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296 # two entries, one with exists=True and another with exists=False. |
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297 # The exists=True entries in the same response should be interpreted |
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298 # as being happens-after the exists=False entries due to the way that |
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299 # Watchman tracks files. We use this property to reconcile deletes |
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300 # for name case changes. |
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301 for entry in result['files']: |
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302 fname = entry['name'] |
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303 if switch_slashes: |
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304 fname = fname.replace('\\', '/') |
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305 if normalize: |
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306 normed = normcase(fname) |
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307 fname = normalize(fname, True, True) |
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308 foldmap[normed] = fname |
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309 fmode = entry['mode'] |
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310 fexists = entry['exists'] |
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311 kind = getkind(fmode) |
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312 |
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313 if not fexists: |
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314 # if marked as deleted and we don't already have a change |
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315 # record, mark it as deleted. If we already have an entry |
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316 # for fname then it was either part of walkexplicit or was |
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317 # an earlier result that was a case change |
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318 if fname not in results and fname in dmap and ( |
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319 matchalways or matchfn(fname)): |
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320 results[fname] = None |
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321 elif kind == dirkind: |
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322 if fname in dmap and (matchalways or matchfn(fname)): |
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323 results[fname] = None |
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324 elif kind == regkind or kind == lnkkind: |
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325 if fname in dmap: |
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326 if matchalways or matchfn(fname): |
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327 results[fname] = entry |
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328 elif (matchalways or matchfn(fname)) and not ignore(fname): |
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329 results[fname] = entry |
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330 elif fname in dmap and (matchalways or matchfn(fname)): |
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331 results[fname] = None |
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332 |
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333 # step 3: query notable files we don't already know about |
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334 # XXX try not to iterate over the entire dmap |
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335 if normalize: |
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336 # any notable files that have changed case will already be handled |
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337 # above, so just check membership in the foldmap |
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338 notefiles = set((normalize(f, True, True) for f in notefiles |
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339 if normcase(f) not in foldmap)) |
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340 visit = set((f for f in notefiles if (f not in results and matchfn(f) |
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341 and (f in dmap or not ignore(f))))) |
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342 |
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343 if nonnormalset is not None and not fresh_instance: |
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344 if matchalways: |
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345 visit.update(f for f in nonnormalset if f not in results) |
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346 visit.update(f for f in copymap if f not in results) |
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347 else: |
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348 visit.update(f for f in nonnormalset |
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349 if f not in results and matchfn(f)) |
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350 visit.update(f for f in copymap |
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parents:
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351 if f not in results and matchfn(f)) |
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parents:
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352 else: |
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parents:
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353 if matchalways: |
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354 visit.update(f for f, st in dmap.iteritems() |
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355 if (f not in results and |
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356 (st[2] < 0 or st[0] != 'n' or fresh_instance))) |
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357 visit.update(f for f in copymap if f not in results) |
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358 else: |
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359 visit.update(f for f, st in dmap.iteritems() |
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360 if (f not in results and |
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parents:
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361 (st[2] < 0 or st[0] != 'n' or fresh_instance) |
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parents:
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362 and matchfn(f))) |
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parents:
diff
changeset
|
363 visit.update(f for f in copymap |
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Martijn Pieters <mjpieters@fb.com>
parents:
diff
changeset
|
364 if f not in results and matchfn(f)) |
3b67f27bb908
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Martijn Pieters <mjpieters@fb.com>
parents:
diff
changeset
|
365 |
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parents:
diff
changeset
|
366 audit = pathutil.pathauditor(self._root).check |
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parents:
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changeset
|
367 auditpass = [f for f in visit if audit(f)] |
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parents:
diff
changeset
|
368 auditpass.sort() |
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369 auditfail = visit.difference(auditpass) |
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parents:
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changeset
|
370 for f in auditfail: |
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parents:
diff
changeset
|
371 results[f] = None |
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parents:
diff
changeset
|
372 |
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parents:
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changeset
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373 nf = iter(auditpass).next |
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parents:
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374 for st in util.statfiles([join(f) for f in auditpass]): |
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parents:
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changeset
|
375 f = nf() |
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parents:
diff
changeset
|
376 if st or f in dmap: |
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parents:
diff
changeset
|
377 results[f] = st |
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parents:
diff
changeset
|
378 |
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Martijn Pieters <mjpieters@fb.com>
parents:
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changeset
|
379 for s in subrepos: |
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Martijn Pieters <mjpieters@fb.com>
parents:
diff
changeset
|
380 del results[s] |
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parents:
diff
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|
381 del results['.hg'] |
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parents:
diff
changeset
|
382 return results |
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parents:
diff
changeset
|
383 |
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parents:
diff
changeset
|
384 def overridestatus( |
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parents:
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changeset
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385 orig, self, node1='.', node2=None, match=None, ignored=False, |
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parents:
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changeset
|
386 clean=False, unknown=False, listsubrepos=False): |
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parents:
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changeset
|
387 listignored = ignored |
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parents:
diff
changeset
|
388 listclean = clean |
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Martijn Pieters <mjpieters@fb.com>
parents:
diff
changeset
|
389 listunknown = unknown |
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Martijn Pieters <mjpieters@fb.com>
parents:
diff
changeset
|
390 |
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Martijn Pieters <mjpieters@fb.com>
parents:
diff
changeset
|
391 def _cmpsets(l1, l2): |
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Martijn Pieters <mjpieters@fb.com>
parents:
diff
changeset
|
392 try: |
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Martijn Pieters <mjpieters@fb.com>
parents:
diff
changeset
|
393 if 'FSMONITOR_LOG_FILE' in os.environ: |
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parents:
diff
changeset
|
394 fn = os.environ['FSMONITOR_LOG_FILE'] |
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Martijn Pieters <mjpieters@fb.com>
parents:
diff
changeset
|
395 f = open(fn, 'wb') |
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parents:
diff
changeset
|
396 else: |
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parents:
diff
changeset
|
397 fn = 'fsmonitorfail.log' |
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parents:
diff
changeset
|
398 f = self.opener(fn, 'wb') |
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parents:
diff
changeset
|
399 except (IOError, OSError): |
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parents:
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changeset
|
400 self.ui.warn(_('warning: unable to write to %s\n') % fn) |
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Martijn Pieters <mjpieters@fb.com>
parents:
diff
changeset
|
401 return |
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Martijn Pieters <mjpieters@fb.com>
parents:
diff
changeset
|
402 |
3b67f27bb908
fsmonitor: new experimental extension
Martijn Pieters <mjpieters@fb.com>
parents:
diff
changeset
|
403 try: |
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Martijn Pieters <mjpieters@fb.com>
parents:
diff
changeset
|
404 for i, (s1, s2) in enumerate(zip(l1, l2)): |
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Martijn Pieters <mjpieters@fb.com>
parents:
diff
changeset
|
405 if set(s1) != set(s2): |
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Martijn Pieters <mjpieters@fb.com>
parents:
diff
changeset
|
406 f.write('sets at position %d are unequal\n' % i) |
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Martijn Pieters <mjpieters@fb.com>
parents:
diff
changeset
|
407 f.write('watchman returned: %s\n' % s1) |
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Martijn Pieters <mjpieters@fb.com>
parents:
diff
changeset
|
408 f.write('stat returned: %s\n' % s2) |
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Martijn Pieters <mjpieters@fb.com>
parents:
diff
changeset
|
409 finally: |
3b67f27bb908
fsmonitor: new experimental extension
Martijn Pieters <mjpieters@fb.com>
parents:
diff
changeset
|
410 f.close() |
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Martijn Pieters <mjpieters@fb.com>
parents:
diff
changeset
|
411 |
3b67f27bb908
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Martijn Pieters <mjpieters@fb.com>
parents:
diff
changeset
|
412 if isinstance(node1, context.changectx): |
3b67f27bb908
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Martijn Pieters <mjpieters@fb.com>
parents:
diff
changeset
|
413 ctx1 = node1 |
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Martijn Pieters <mjpieters@fb.com>
parents:
diff
changeset
|
414 else: |
3b67f27bb908
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Martijn Pieters <mjpieters@fb.com>
parents:
diff
changeset
|
415 ctx1 = self[node1] |
3b67f27bb908
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Martijn Pieters <mjpieters@fb.com>
parents:
diff
changeset
|
416 if isinstance(node2, context.changectx): |
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Martijn Pieters <mjpieters@fb.com>
parents:
diff
changeset
|
417 ctx2 = node2 |
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parents:
diff
changeset
|
418 else: |
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parents:
diff
changeset
|
419 ctx2 = self[node2] |
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parents:
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420 |
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421 working = ctx2.rev() is None |
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parents:
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422 parentworking = working and ctx1 == self['.'] |
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parents:
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423 match = match or matchmod.always(self.root, self.getcwd()) |
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|
424 |
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parents:
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425 # Maybe we can use this opportunity to update Watchman's state. |
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parents:
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426 # Mercurial uses workingcommitctx and/or memctx to represent the part of |
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parents:
diff
changeset
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427 # the workingctx that is to be committed. So don't update the state in |
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parents:
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428 # that case. |
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parents:
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429 # HG_PENDING is set in the environment when the dirstate is being updated |
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430 # in the middle of a transaction; we must not update our state in that |
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parents:
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431 # case, or we risk forgetting about changes in the working copy. |
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432 updatestate = (parentworking and match.always() and |
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433 not isinstance(ctx2, (context.workingcommitctx, |
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434 context.memctx)) and |
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435 'HG_PENDING' not in os.environ) |
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parents:
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changeset
|
436 |
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parents:
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437 try: |
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438 if self._fsmonitorstate.walk_on_invalidate: |
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parents:
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changeset
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439 # Use a short timeout to query the current clock. If that |
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parents:
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440 # takes too long then we assume that the service will be slow |
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parents:
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changeset
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441 # to answer our query. |
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parents:
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442 # walk_on_invalidate indicates that we prefer to walk the |
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parents:
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443 # tree ourselves because we can ignore portions that Watchman |
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Martijn Pieters <mjpieters@fb.com>
parents:
diff
changeset
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444 # cannot and we tend to be faster in the warmer buffer cache |
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Martijn Pieters <mjpieters@fb.com>
parents:
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445 # cases. |
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446 self._watchmanclient.settimeout(0.1) |
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447 else: |
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448 # Give Watchman more time to potentially complete its walk |
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parents:
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449 # and return the initial clock. In this mode we assume that |
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parents:
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450 # the filesystem will be slower than parsing a potentially |
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parents:
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451 # very large Watchman result set. |
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452 self._watchmanclient.settimeout( |
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453 self._fsmonitorstate.timeout + 0.1) |
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454 startclock = self._watchmanclient.getcurrentclock() |
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parents:
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455 except Exception as ex: |
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456 self._watchmanclient.clearconnection() |
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457 _handleunavailable(self.ui, self._fsmonitorstate, ex) |
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458 # boo, Watchman failed. bail |
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parents:
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459 return orig(node1, node2, match, listignored, listclean, |
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parents:
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460 listunknown, listsubrepos) |
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parents:
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changeset
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461 |
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462 if updatestate: |
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parents:
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463 # We need info about unknown files. This may make things slower the |
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parents:
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464 # first time, but whatever. |
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465 stateunknown = True |
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466 else: |
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parents:
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467 stateunknown = listunknown |
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|
468 |
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parents:
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469 r = orig(node1, node2, match, listignored, listclean, stateunknown, |
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parents:
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470 listsubrepos) |
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parents:
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471 modified, added, removed, deleted, unknown, ignored, clean = r |
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parents:
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changeset
|
472 |
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parents:
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473 if updatestate: |
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parents:
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474 notefiles = modified + added + removed + deleted + unknown |
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parents:
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475 self._fsmonitorstate.set( |
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parents:
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476 self._fsmonitorstate.getlastclock() or startclock, |
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parents:
diff
changeset
|
477 _hashignore(self.dirstate._ignore), |
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parents:
diff
changeset
|
478 notefiles) |
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parents:
diff
changeset
|
479 |
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parents:
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changeset
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480 if not listunknown: |
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parents:
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481 unknown = [] |
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parents:
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changeset
|
482 |
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parents:
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483 # don't do paranoid checks if we're not going to query Watchman anyway |
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parents:
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484 full = listclean or match.traversedir is not None |
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parents:
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485 if self._fsmonitorstate.mode == 'paranoid' and not full: |
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parents:
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changeset
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486 # run status again and fall back to the old walk this time |
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parents:
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changeset
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487 self.dirstate._fsmonitordisable = True |
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parents:
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changeset
|
488 |
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parents:
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changeset
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489 # shut the UI up |
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490 quiet = self.ui.quiet |
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491 self.ui.quiet = True |
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parents:
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492 fout, ferr = self.ui.fout, self.ui.ferr |
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493 self.ui.fout = self.ui.ferr = open(os.devnull, 'wb') |
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parents:
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changeset
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494 |
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parents:
diff
changeset
|
495 try: |
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parents:
diff
changeset
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496 rv2 = orig( |
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parents:
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changeset
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497 node1, node2, match, listignored, listclean, listunknown, |
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parents:
diff
changeset
|
498 listsubrepos) |
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parents:
diff
changeset
|
499 finally: |
3b67f27bb908
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Martijn Pieters <mjpieters@fb.com>
parents:
diff
changeset
|
500 self.dirstate._fsmonitordisable = False |
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parents:
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changeset
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501 self.ui.quiet = quiet |
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parents:
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changeset
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502 self.ui.fout, self.ui.ferr = fout, ferr |
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parents:
diff
changeset
|
503 |
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parents:
diff
changeset
|
504 # clean isn't tested since it's set to True above |
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parents:
diff
changeset
|
505 _cmpsets([modified, added, removed, deleted, unknown, ignored, clean], |
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Martijn Pieters <mjpieters@fb.com>
parents:
diff
changeset
|
506 rv2) |
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parents:
diff
changeset
|
507 modified, added, removed, deleted, unknown, ignored, clean = rv2 |
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parents:
diff
changeset
|
508 |
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parents:
diff
changeset
|
509 return scmutil.status( |
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parents:
diff
changeset
|
510 modified, added, removed, deleted, unknown, ignored, clean) |
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Martijn Pieters <mjpieters@fb.com>
parents:
diff
changeset
|
511 |
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parents:
diff
changeset
|
512 def makedirstate(cls): |
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parents:
diff
changeset
|
513 class fsmonitordirstate(cls): |
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parents:
diff
changeset
|
514 def _fsmonitorinit(self, fsmonitorstate, watchmanclient): |
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parents:
diff
changeset
|
515 # _fsmonitordisable is used in paranoid mode |
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parents:
diff
changeset
|
516 self._fsmonitordisable = False |
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parents:
diff
changeset
|
517 self._fsmonitorstate = fsmonitorstate |
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parents:
diff
changeset
|
518 self._watchmanclient = watchmanclient |
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parents:
diff
changeset
|
519 |
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parents:
diff
changeset
|
520 def walk(self, *args, **kwargs): |
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parents:
diff
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|
521 orig = super(fsmonitordirstate, self).walk |
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parents:
diff
changeset
|
522 if self._fsmonitordisable: |
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parents:
diff
changeset
|
523 return orig(*args, **kwargs) |
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parents:
diff
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|
524 return overridewalk(orig, self, *args, **kwargs) |
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parents:
diff
changeset
|
525 |
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parents:
diff
changeset
|
526 def rebuild(self, *args, **kwargs): |
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parents:
diff
changeset
|
527 self._fsmonitorstate.invalidate() |
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parents:
diff
changeset
|
528 return super(fsmonitordirstate, self).rebuild(*args, **kwargs) |
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parents:
diff
changeset
|
529 |
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parents:
diff
changeset
|
530 def invalidate(self, *args, **kwargs): |
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parents:
diff
changeset
|
531 self._fsmonitorstate.invalidate() |
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parents:
diff
changeset
|
532 return super(fsmonitordirstate, self).invalidate(*args, **kwargs) |
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Martijn Pieters <mjpieters@fb.com>
parents:
diff
changeset
|
533 |
3b67f27bb908
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parents:
diff
changeset
|
534 return fsmonitordirstate |
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Martijn Pieters <mjpieters@fb.com>
parents:
diff
changeset
|
535 |
3b67f27bb908
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Martijn Pieters <mjpieters@fb.com>
parents:
diff
changeset
|
536 def wrapdirstate(orig, self): |
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Martijn Pieters <mjpieters@fb.com>
parents:
diff
changeset
|
537 ds = orig(self) |
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Martijn Pieters <mjpieters@fb.com>
parents:
diff
changeset
|
538 # only override the dirstate when Watchman is available for the repo |
3b67f27bb908
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Martijn Pieters <mjpieters@fb.com>
parents:
diff
changeset
|
539 if util.safehasattr(self, '_fsmonitorstate'): |
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parents:
diff
changeset
|
540 ds.__class__ = makedirstate(ds.__class__) |
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Martijn Pieters <mjpieters@fb.com>
parents:
diff
changeset
|
541 ds._fsmonitorinit(self._fsmonitorstate, self._watchmanclient) |
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Martijn Pieters <mjpieters@fb.com>
parents:
diff
changeset
|
542 return ds |
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Martijn Pieters <mjpieters@fb.com>
parents:
diff
changeset
|
543 |
3b67f27bb908
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Martijn Pieters <mjpieters@fb.com>
parents:
diff
changeset
|
544 def extsetup(ui): |
3b67f27bb908
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Martijn Pieters <mjpieters@fb.com>
parents:
diff
changeset
|
545 wrapfilecache(localrepo.localrepository, 'dirstate', wrapdirstate) |
3b67f27bb908
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Martijn Pieters <mjpieters@fb.com>
parents:
diff
changeset
|
546 if sys.platform == 'darwin': |
3b67f27bb908
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Martijn Pieters <mjpieters@fb.com>
parents:
diff
changeset
|
547 # An assist for avoiding the dangling-symlink fsevents bug |
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Martijn Pieters <mjpieters@fb.com>
parents:
diff
changeset
|
548 extensions.wrapfunction(os, 'symlink', wrapsymlink) |
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Martijn Pieters <mjpieters@fb.com>
parents:
diff
changeset
|
549 |
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Martijn Pieters <mjpieters@fb.com>
parents:
diff
changeset
|
550 def wrapsymlink(orig, source, link_name): |
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Martijn Pieters <mjpieters@fb.com>
parents:
diff
changeset
|
551 ''' if we create a dangling symlink, also touch the parent dir |
3b67f27bb908
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Martijn Pieters <mjpieters@fb.com>
parents:
diff
changeset
|
552 to encourage fsevents notifications to work more correctly ''' |
3b67f27bb908
fsmonitor: new experimental extension
Martijn Pieters <mjpieters@fb.com>
parents:
diff
changeset
|
553 try: |
3b67f27bb908
fsmonitor: new experimental extension
Martijn Pieters <mjpieters@fb.com>
parents:
diff
changeset
|
554 return orig(source, link_name) |
3b67f27bb908
fsmonitor: new experimental extension
Martijn Pieters <mjpieters@fb.com>
parents:
diff
changeset
|
555 finally: |
3b67f27bb908
fsmonitor: new experimental extension
Martijn Pieters <mjpieters@fb.com>
parents:
diff
changeset
|
556 try: |
3b67f27bb908
fsmonitor: new experimental extension
Martijn Pieters <mjpieters@fb.com>
parents:
diff
changeset
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557 os.utime(os.path.dirname(link_name), None) |
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558 except OSError: |
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559 pass |
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560 |
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561 def reposetup(ui, repo): |
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562 # We don't work with largefiles or inotify |
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563 exts = extensions.enabled() |
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564 for ext in _blacklist: |
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565 if ext in exts: |
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566 ui.warn(_('The fsmonitor extension is incompatible with the %s ' |
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567 'extension and has been disabled.\n') % ext) |
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568 return |
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569 |
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570 if util.safehasattr(repo, 'dirstate'): |
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571 # We don't work with subrepos either. Note that we can get passed in |
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572 # e.g. a statichttprepo, which throws on trying to access the substate. |
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573 # XXX This sucks. |
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574 try: |
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575 # if repo[None].substate can cause a dirstate parse, which is too |
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576 # slow. Instead, look for a file called hgsubstate, |
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577 if repo.wvfs.exists('.hgsubstate') or repo.wvfs.exists('.hgsub'): |
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578 return |
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579 except AttributeError: |
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580 return |
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581 |
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582 fsmonitorstate = state.state(repo) |
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583 if fsmonitorstate.mode == 'off': |
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584 return |
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585 |
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586 try: |
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587 client = watchmanclient.client(repo) |
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588 except Exception as ex: |
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589 _handleunavailable(ui, fsmonitorstate, ex) |
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590 return |
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591 |
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592 repo._fsmonitorstate = fsmonitorstate |
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593 repo._watchmanclient = client |
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594 |
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595 # at this point since fsmonitorstate wasn't present, repo.dirstate is |
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596 # not a fsmonitordirstate |
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597 repo.dirstate.__class__ = makedirstate(repo.dirstate.__class__) |
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598 # nuke the dirstate so that _fsmonitorinit and subsequent configuration |
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599 # changes take effect on it |
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600 del repo._filecache['dirstate'] |
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601 delattr(repo.unfiltered(), 'dirstate') |
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602 |
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603 class fsmonitorrepo(repo.__class__): |
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604 def status(self, *args, **kwargs): |
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605 orig = super(fsmonitorrepo, self).status |
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606 return overridestatus(orig, self, *args, **kwargs) |
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607 |
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608 repo.__class__ = fsmonitorrepo |
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609 |
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610 def wrapfilecache(cls, propname, wrapper): |
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parents:
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611 """Wraps a filecache property. These can't be wrapped using the normal |
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612 wrapfunction. This should eventually go into upstream Mercurial. |
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613 """ |
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614 assert callable(wrapper) |
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615 for currcls in cls.__mro__: |
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616 if propname in currcls.__dict__: |
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617 origfn = currcls.__dict__[propname].func |
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618 assert callable(origfn) |
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619 def wrap(*args, **kwargs): |
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620 return wrapper(origfn, *args, **kwargs) |
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621 currcls.__dict__[propname].func = wrap |
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622 break |
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623 |
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624 if currcls is object: |
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625 raise AttributeError( |
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parents:
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626 _("type '%s' has no property '%s'") % (cls, propname)) |