Mercurial > hg > gitweb

annotate mercurial/context.py @ 3146:e69a0cbe268e

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
filectx.annotate: return filectx for each line instead of rev
author Brendan Cully <brendan@kublai.com>
date Fri, 22 Sep 2006 08:19:25 -0700
parents 8342ad5abe0b
children ff1ab08e6732
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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1 # context.py - changeset and file context objects for mercurial
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2 #
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3 # Copyright 2006 Matt Mackall <mpm@selenic.com>
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4 #
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5 # This software may be used and distributed according to the terms
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6 # of the GNU General Public License, incorporated herein by reference.
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7
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8 from node import *
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9 from demandload import demandload
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10 demandload(globals(), "ancestor util")
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11
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12 class changectx(object):
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13 """A changecontext object makes access to data related to a particular
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14 changeset convenient."""
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15 def __init__(self, repo, changeid=None):
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16 """changeid is a revision number, node, or tag"""
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17 self._repo = repo
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18
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19 if not changeid and changeid != 0:
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20 p1, p2 = self._repo.dirstate.parents()
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21 self._rev = self._repo.changelog.rev(p1)
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22 if self._rev == -1:
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23 changeid = 'tip'
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24 else:
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25 self._node = p1
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26 return
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27
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28 self._node = self._repo.lookup(changeid)
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29 self._rev = self._repo.changelog.rev(self._node)
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30
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31 def changeset(self):
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32 try:
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33 return self._changeset
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34 except AttributeError:
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35 self._changeset = self._repo.changelog.read(self.node())
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36 return self._changeset
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37
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38 def manifest(self):
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39 try:
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40 return self._manifest
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41 except AttributeError:
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42 self._manifest = self._repo.manifest.read(self.changeset()[0])
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43 return self._manifest
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44
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45 def rev(self): return self._rev
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46 def node(self): return self._node
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47 def user(self): return self.changeset()[1]
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48 def date(self): return self.changeset()[2]
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49 def files(self): return self.changeset()[3]
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50 def description(self): return self.changeset()[4]
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51
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52 def parents(self):
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53 """return contexts for each parent changeset"""
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54 p = self._repo.changelog.parents(self._node)
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55 return [ changectx(self._repo, x) for x in p ]
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56
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57 def children(self):
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58 """return contexts for each child changeset"""
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59 c = self._repo.changelog.children(self._node)
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60 return [ changectx(self._repo, x) for x in c ]
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61
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62 def filenode(self, path):
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63 node, flag = self._repo.manifest.find(self.changeset()[0], path)
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64 return node
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65
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66 def filectx(self, path, fileid=None):
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67 """get a file context from this changeset"""
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68 if fileid is None:
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69 fileid = self.filenode(path)
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70 return filectx(self._repo, path, fileid=fileid)
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71
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72 def filectxs(self):
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73 """generate a file context for each file in this changeset's
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74 manifest"""
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75 mf = self.manifest()
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76 m = mf.keys()
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77 m.sort()
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78 for f in m:
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79 yield self.filectx(f, fileid=mf[f])
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80
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81 def ancestor(self, c2):
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82 """
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83 return the ancestor context of self and c2
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84 """
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85 n = self._repo.changelog.ancestor(self._node, c2._node)
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86 return changectx(self._repo, n)
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87
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88 class filectx(object):
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89 """A filecontext object makes access to data related to a particular
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90 filerevision convenient."""
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91 def __init__(self, repo, path, changeid=None, fileid=None, filelog=None):
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92 """changeid can be a changeset revision, node, or tag.
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93 fileid can be a file revision or node."""
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94 self._repo = repo
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95 self._path = path
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96
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97 assert changeid is not None or fileid is not None
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98
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99 if filelog:
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100 self._filelog = filelog
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101 else:
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102 self._filelog = self._repo.file(self._path)
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103
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104 if fileid is None:
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105 self._changeid = changeid
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106 else:
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107 self._filenode = self._filelog.lookup(fileid)
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108 self._changeid = self._filelog.linkrev(self._filenode)
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109
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110 def __getattr__(self, name):
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111 if name == '_changectx':
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112 self._changectx = changectx(self._repo, self._changeid)
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113 return self._changectx
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114 elif name == '_filenode':
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115 self._filenode = self._changectx.filenode(self._path)
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116 return self._filenode
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117 elif name == '_filerev':
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118 self._filerev = self._filelog.rev(self._filenode)
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119 return self._filerev
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120 else:
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121 raise AttributeError, name
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122
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123 def filerev(self): return self._filerev
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124 def filenode(self): return self._filenode
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125 def filelog(self): return self._filelog
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126
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127 def rev(self): return self._changectx.rev()
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128 def node(self): return self._changectx.node()
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129 def user(self): return self._changectx.user()
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130 def date(self): return self._changectx.date()
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131 def files(self): return self._changectx.files()
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132 def description(self): return self._changectx.description()
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133 def manifest(self): return self._changectx.manifest()
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134
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135 def data(self): return self._filelog.read(self._filenode)
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136 def renamed(self): return self._filelog.renamed(self._filenode)
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137 def path(self): return self._path
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138
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139 def parents(self):
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140 p = self._path
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141 fl = self._filelog
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142 pl = [ (p, n, fl) for n in self._filelog.parents(self._filenode) ]
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143
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144 r = self.renamed()
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145 if r:
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146 pl[0] = (r[0], r[1], None)
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147
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148 return [ filectx(self._repo, p, fileid=n, filelog=l)
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149 for p,n,l in pl if n != nullid ]
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150
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151 def children(self):
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152 # hard for renames
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153 c = self._filelog.children(self._filenode)
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154 return [ filectx(self._repo, self._path, fileid=x,
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155 filelog=self._filelog) for x in c ]
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156
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157 def annotate(self):
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158 getctx = util.cachefunc(lambda x: filectx(self._repo, self._path,
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159 changeid=x,
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160 filelog=self._filelog))
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161 hist = self._filelog.annotate(self._filenode)
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162
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163 return [(getctx(rev), line) for rev, line in hist]
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164
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165 def ancestor(self, fc2):
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166 """
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167 find the common ancestor file context, if any, of self, and fc2
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168 """
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169
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170 acache = {}
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171 flcache = {self._path:self._filelog, fc2._path:fc2._filelog}
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172 def parents(vertex):
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173 if vertex in acache:
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174 return acache[vertex]
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175 f, n = vertex
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176 if f not in flcache:
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177 flcache[f] = self._repo.file(f)
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178 fl = flcache[f]
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179 pl = [ (f,p) for p in fl.parents(n) if p != nullid ]
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180 re = fl.renamed(n)
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181 if re:
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182 pl.append(re)
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183 acache[vertex]=pl
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184 return pl
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185
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186 a, b = (self._path, self._filenode), (fc2._path, fc2._filenode)
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187 v = ancestor.ancestor(a, b, parents)
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188 if v:
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189 f,n = v
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190 return filectx(self._repo, f, fileid=n, filelog=flcache[f])
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191
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192 return None