Mercurial > public > mercurial-scm > hg-stable

annotate mercurial/filelog.py @ 47055:d55b71393907

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node: replace nullid and friends with nodeconstants class The introduction of 256bit hashes require changes to nullid and other constant magic values. Start pushing them down from repository and revlog where sensible. Differential Revision: https://phab.mercurial-scm.org/D9465
author Joerg Sonnenberger <joerg@bec.de>
date Mon, 29 Mar 2021 01:52:06 +0200
parents d4ba4d51f85f
children 4c041c71ec01
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rev   line source
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1 # filelog.py - file history class for mercurial
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2 #
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3 # Copyright 2005-2007 Olivia Mackall <olivia@selenic.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 from .i18n import _
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11 from .node import nullrev
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12 from . import (
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13 error,
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14 revlog,
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15 )
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16 from .interfaces import (
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17 repository,
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18 util as interfaceutil,
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19 )
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20 from .utils import storageutil
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21
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22
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23 @interfaceutil.implementer(repository.ifilestorage)
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24 class filelog(object):
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25 def __init__(self, opener, path):
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26 self._revlog = revlog.revlog(
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27 opener, b'/'.join((b'data', path + b'.i')), censorable=True
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28 )
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29 # Full name of the user visible file, relative to the repository root.
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30 # Used by LFS.
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31 self._revlog.filename = path
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32 self._revlog.revlog_kind = b'filelog'
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33 self.nullid = self._revlog.nullid
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34
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35 def __len__(self):
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36 return len(self._revlog)
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37
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38 def __iter__(self):
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39 return self._revlog.__iter__()
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40
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41 def hasnode(self, node):
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42 if node in (self.nullid, nullrev):
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43 return False
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44
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45 try:
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46 self._revlog.rev(node)
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47 return True
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48 except (TypeError, ValueError, IndexError, error.LookupError):
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49 return False
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50
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51 def revs(self, start=0, stop=None):
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52 return self._revlog.revs(start=start, stop=stop)
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53
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54 def parents(self, node):
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55 return self._revlog.parents(node)
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56
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57 def parentrevs(self, rev):
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58 return self._revlog.parentrevs(rev)
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59
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60 def rev(self, node):
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61 return self._revlog.rev(node)
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62
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63 def node(self, rev):
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64 return self._revlog.node(rev)
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65
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66 def lookup(self, node):
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67 return storageutil.fileidlookup(
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68 self._revlog, node, self._revlog.indexfile
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69 )
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70
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71 def linkrev(self, rev):
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72 return self._revlog.linkrev(rev)
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73
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74 def commonancestorsheads(self, node1, node2):
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75 return self._revlog.commonancestorsheads(node1, node2)
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76
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77 # Used by dagop.blockdescendants().
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78 def descendants(self, revs):
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79 return self._revlog.descendants(revs)
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80
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81 def heads(self, start=None, stop=None):
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82 return self._revlog.heads(start, stop)
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83
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84 # Used by hgweb, children extension.
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85 def children(self, node):
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86 return self._revlog.children(node)
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87
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88 def iscensored(self, rev):
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89 return self._revlog.iscensored(rev)
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90
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91 def revision(self, node, _df=None, raw=False):
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92 return self._revlog.revision(node, _df=_df, raw=raw)
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93
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94 def rawdata(self, node, _df=None):
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95 return self._revlog.rawdata(node, _df=_df)
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96
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97 def emitrevisions(
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98 self,
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99 nodes,
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100 nodesorder=None,
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101 revisiondata=False,
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102 assumehaveparentrevisions=False,
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103 deltamode=repository.CG_DELTAMODE_STD,
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104 sidedata_helpers=None,
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105 ):
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106 return self._revlog.emitrevisions(
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107 nodes,
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108 nodesorder=nodesorder,
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109 revisiondata=revisiondata,
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110 assumehaveparentrevisions=assumehaveparentrevisions,
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111 deltamode=deltamode,
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112 sidedata_helpers=sidedata_helpers,
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113 )
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114
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115 def addrevision(
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116 self,
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117 revisiondata,
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118 transaction,
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119 linkrev,
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120 p1,
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121 p2,
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122 node=None,
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123 flags=revlog.REVIDX_DEFAULT_FLAGS,
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124 cachedelta=None,
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125 ):
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126 return self._revlog.addrevision(
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127 revisiondata,
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128 transaction,
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129 linkrev,
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130 p1,
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131 p2,
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132 node=node,
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133 flags=flags,
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134 cachedelta=cachedelta,
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135 )
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136
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137 def addgroup(
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138 self,
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139 deltas,
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140 linkmapper,
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141 transaction,
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142 addrevisioncb=None,
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143 duplicaterevisioncb=None,
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144 maybemissingparents=False,
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145 ):
40389
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parents: 40387
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146 if maybemissingparents:
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147 raise error.Abort(
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148 _(
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149 b'revlog storage does not support missing '
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150 b'parents write mode'
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151 )
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152 )
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153
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154 return self._revlog.addgroup(
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155 deltas,
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156 linkmapper,
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157 transaction,
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158 addrevisioncb=addrevisioncb,
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159 duplicaterevisioncb=duplicaterevisioncb,
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160 )
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161
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162 def getstrippoint(self, minlink):
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163 return self._revlog.getstrippoint(minlink)
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164
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165 def strip(self, minlink, transaction):
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166 return self._revlog.strip(minlink, transaction)
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167
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168 def censorrevision(self, tr, node, tombstone=b''):
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169 return self._revlog.censorrevision(tr, node, tombstone=tombstone)
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170
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171 def files(self):
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172 return self._revlog.files()
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173
0
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174 def read(self, node):
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175 return storageutil.filtermetadata(self.revision(node))
360
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176
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177 def add(self, text, meta, transaction, link, p1=None, p2=None):
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178 if meta or text.startswith(b'\1\n'):
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179 text = storageutil.packmeta(meta, text)
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180 rev = self.addrevision(text, transaction, link, p1, p2)
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181 return self.node(rev)
0
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182
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183 def renamed(self, node):
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184 return storageutil.filerevisioncopied(self, node)
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185
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186 def size(self, rev):
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187 """return the size of a given revision"""
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188
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189 # for revisions with renames, we have to go the slow way
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190 node = self.node(rev)
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191 if self.renamed(node):
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192 return len(self.read(node))
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Mike Edgar <adgar@google.com>
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193 if self.iscensored(rev):
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194 return 0
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195
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196 # XXX if self.read(node).startswith("\1\n"), this returns (size+4)
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197 return self._revlog.size(rev)
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198
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199 def cmp(self, node, text):
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200 """compare text with a given file revision
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201
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202 returns True if text is different than what is stored.
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203 """
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204 return not storageutil.filedataequivalent(self, node, text)
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205
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206 def verifyintegrity(self, state):
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207 return self._revlog.verifyintegrity(state)
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208
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209 def storageinfo(
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210 self,
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211 exclusivefiles=False,
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212 sharedfiles=False,
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213 revisionscount=False,
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214 trackedsize=False,
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215 storedsize=False,
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216 ):
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217 return self._revlog.storageinfo(
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218 exclusivefiles=exclusivefiles,
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219 sharedfiles=sharedfiles,
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220 revisionscount=revisionscount,
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221 trackedsize=trackedsize,
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222 storedsize=storedsize,
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223 )
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diff changeset
224
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225 # TODO these aren't part of the interface and aren't internal methods.
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226 # Callers should be fixed to not use them.
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227
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228 # Used by bundlefilelog, unionfilelog.
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229 @property
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230 def indexfile(self):
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diff changeset
231 return self._revlog.indexfile
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diff changeset
232
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diff changeset
233 @indexfile.setter
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234 def indexfile(self, value):
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Gregory Szorc <gregory.szorc@gmail.com>
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235 self._revlog.indexfile = value
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236
39799
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237 # Used by repo upgrade.
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238 def clone(self, tr, destrevlog, **kwargs):
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parents: 37443
diff changeset
239 if not isinstance(destrevlog, filelog):
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parents: 43076
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240 raise error.ProgrammingError(b'expected filelog to clone()')
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241
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Gregory Szorc <gregory.szorc@gmail.com>
parents: 37443
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242 return self._revlog.clone(tr, destrevlog._revlog, **kwargs)
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243
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244
39781
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245 class narrowfilelog(filelog):
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246 """Filelog variation to be used with narrow stores."""
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247
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248 def __init__(self, opener, path, narrowmatch):
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249 super(narrowfilelog, self).__init__(opener, path)
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250 self._narrowmatch = narrowmatch
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251
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252 def renamed(self, node):
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253 res = super(narrowfilelog, self).renamed(node)
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254
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diff changeset
255 # Renames that come from outside the narrowspec are problematic
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256 # because we may lack the base text for the rename. This can result
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Gregory Szorc <gregory.szorc@gmail.com>
parents: 39310
diff changeset
257 # in code attempting to walk the ancestry or compute a diff
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parents: 39310
diff changeset
258 # encountering a missing revision. We address this by silently
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parents: 39310
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259 # removing rename metadata if the source file is outside the
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260 # narrow spec.
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261 #
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diff changeset
262 # A better solution would be to see if the base revision is available,
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Gregory Szorc <gregory.szorc@gmail.com>
parents: 39310
diff changeset
263 # rather than assuming it isn't.
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Gregory Szorc <gregory.szorc@gmail.com>
parents: 39310
diff changeset
264 #
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parents: 39310
diff changeset
265 # An even better solution would be to teach all consumers of rename
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parents: 39310
diff changeset
266 # metadata that the base revision may not be available.
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parents: 39310
diff changeset
267 #
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parents: 39310
diff changeset
268 # TODO consider better ways of doing this.
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parents: 39310
diff changeset
269 if res and not self._narrowmatch(res[0]):
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parents: 39310
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270 return None
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parents: 39310
diff changeset
271
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parents: 39310
diff changeset
272 return res
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parents: 39310
diff changeset
273
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parents: 39310
diff changeset
274 def size(self, rev):
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parents: 39310
diff changeset
275 # Because we have a custom renamed() that may lie, we need to call
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parents: 39310
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276 # the base renamed() to report accurate results.
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277 node = self.node(rev)
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278 if super(narrowfilelog, self).renamed(node):
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279 return len(self.read(node))
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280 else:
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281 return super(narrowfilelog, self).size(rev)
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282
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283 def cmp(self, node, text):
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284 # We don't call `super` because narrow parents can be buggy in case of a
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285 # ambiguous dirstate. Always take the slow path until there is a better
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286 # fix, see issue6150.
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287
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288 # Censored files compare against the empty file.
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289 if self.iscensored(self.rev(node)):
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290 return text != b''
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291
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292 return self.read(node) != text