Mercurial > public > mercurial-scm > hg-stable

annotate mercurial/filelog.py @ 47162:a07d5cb03a85

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revlog: rename `indexfile` to `_indexfile` We want to make the actual location of the indexfile and location more of an implementation details than what is is currently. In that process, we make the attribute private. Differential Revision: https://phab.mercurial-scm.org/D10574
author Pierre-Yves David <pierre-yves.david@octobus.net>
date Mon, 03 May 2021 12:22:16 +0200
parents 8a1a51d31e85
children 8d3c2f9d4af7
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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 from .revlogutils import (
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22 constants as revlog_constants,
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23 )
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24
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25
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26 @interfaceutil.implementer(repository.ifilestorage)
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27 class filelog(object):
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28 def __init__(self, opener, path):
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29 self._revlog = revlog.revlog(
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30 opener,
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31 # XXX should use the unencoded path
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32 target=(revlog_constants.KIND_FILELOG, path),
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33 indexfile=b'/'.join((b'data', path + b'.i')),
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34 censorable=True,
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35 )
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36 # Full name of the user visible file, relative to the repository root.
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37 # Used by LFS.
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38 self._revlog.filename = path
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39 self.nullid = self._revlog.nullid
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40
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41 def __len__(self):
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42 return len(self._revlog)
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43
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44 def __iter__(self):
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45 return self._revlog.__iter__()
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46
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47 def hasnode(self, node):
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48 if node in (self.nullid, nullrev):
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49 return False
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50
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51 try:
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52 self._revlog.rev(node)
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53 return True
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54 except (TypeError, ValueError, IndexError, error.LookupError):
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55 return False
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56
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57 def revs(self, start=0, stop=None):
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58 return self._revlog.revs(start=start, stop=stop)
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59
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60 def parents(self, node):
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61 return self._revlog.parents(node)
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62
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63 def parentrevs(self, rev):
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64 return self._revlog.parentrevs(rev)
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65
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66 def rev(self, node):
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67 return self._revlog.rev(node)
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68
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69 def node(self, rev):
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70 return self._revlog.node(rev)
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71
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72 def lookup(self, node):
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73 return storageutil.fileidlookup(
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74 self._revlog, node, self._revlog._indexfile
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75 )
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76
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77 def linkrev(self, rev):
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78 return self._revlog.linkrev(rev)
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79
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80 def commonancestorsheads(self, node1, node2):
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81 return self._revlog.commonancestorsheads(node1, node2)
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82
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83 # Used by dagop.blockdescendants().
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84 def descendants(self, revs):
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85 return self._revlog.descendants(revs)
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86
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87 def heads(self, start=None, stop=None):
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88 return self._revlog.heads(start, stop)
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89
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90 # Used by hgweb, children extension.
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91 def children(self, node):
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92 return self._revlog.children(node)
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93
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94 def iscensored(self, rev):
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95 return self._revlog.iscensored(rev)
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96
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97 def revision(self, node, _df=None, raw=False):
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98 return self._revlog.revision(node, _df=_df, raw=raw)
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99
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100 def rawdata(self, node, _df=None):
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101 return self._revlog.rawdata(node, _df=_df)
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102
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103 def emitrevisions(
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104 self,
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105 nodes,
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106 nodesorder=None,
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107 revisiondata=False,
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108 assumehaveparentrevisions=False,
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109 deltamode=repository.CG_DELTAMODE_STD,
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110 sidedata_helpers=None,
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111 ):
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112 return self._revlog.emitrevisions(
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113 nodes,
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114 nodesorder=nodesorder,
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115 revisiondata=revisiondata,
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116 assumehaveparentrevisions=assumehaveparentrevisions,
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117 deltamode=deltamode,
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118 sidedata_helpers=sidedata_helpers,
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119 )
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120
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121 def addrevision(
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122 self,
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123 revisiondata,
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124 transaction,
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125 linkrev,
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126 p1,
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127 p2,
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128 node=None,
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129 flags=revlog.REVIDX_DEFAULT_FLAGS,
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130 cachedelta=None,
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131 ):
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132 return self._revlog.addrevision(
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133 revisiondata,
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parents: 42824
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134 transaction,
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parents: 42824
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135 linkrev,
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parents: 42824
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136 p1,
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137 p2,
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parents: 42824
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138 node=node,
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139 flags=flags,
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140 cachedelta=cachedelta,
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parents: 42824
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141 )
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Gregory Szorc <gregory.szorc@gmail.com>
parents: 37443
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142
43076
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143 def addgroup(
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144 self,
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145 deltas,
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Augie Fackler <augie@google.com>
parents: 42824
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146 linkmapper,
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Augie Fackler <augie@google.com>
parents: 42824
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147 transaction,
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parents: 42824
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148 addrevisioncb=None,
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149 duplicaterevisioncb=None,
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150 maybemissingparents=False,
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Augie Fackler <augie@google.com>
parents: 42824
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151 ):
40389
1b183edbb68e repository: teach addgroup() to receive data with missing parents
Gregory Szorc <gregory.szorc@gmail.com>
parents: 40387
diff changeset
152 if maybemissingparents:
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153 raise error.Abort(
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154 _(
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diff changeset
155 b'revlog storage does not support missing '
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156 b'parents write mode'
43076
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157 )
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parents: 42824
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158 )
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159
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160 return self._revlog.addgroup(
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161 deltas,
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Joerg Sonnenberger <joerg@bec.de>
parents: 43077
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162 linkmapper,
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Joerg Sonnenberger <joerg@bec.de>
parents: 43077
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163 transaction,
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Joerg Sonnenberger <joerg@bec.de>
parents: 43077
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164 addrevisioncb=addrevisioncb,
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165 duplicaterevisioncb=duplicaterevisioncb,
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parents: 42824
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166 )
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167
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parents: 37443
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168 def getstrippoint(self, minlink):
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169 return self._revlog.getstrippoint(minlink)
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170
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171 def strip(self, minlink, transaction):
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172 return self._revlog.strip(minlink, transaction)
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173
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Gregory Szorc <gregory.szorc@gmail.com>
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174 def censorrevision(self, tr, node, tombstone=b''):
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parents: 40008
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175 return self._revlog.censorrevision(tr, node, tombstone=tombstone)
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176
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177 def files(self):
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178 return self._revlog.files()
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179
0
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mpm@selenic.com
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180 def read(self, node):
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181 return storageutil.filtermetadata(self.revision(node))
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182
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183 def add(self, text, meta, transaction, link, p1=None, p2=None):
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184 if meta or text.startswith(b'\1\n'):
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185 text = storageutil.packmeta(meta, text)
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186 rev = self.addrevision(text, transaction, link, p1, p2)
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187 return self.node(rev)
0
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188
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189 def renamed(self, node):
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190 return storageutil.filerevisioncopied(self, node)
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191
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192 def size(self, rev):
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193 """return the size of a given revision"""
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194
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195 # for revisions with renames, we have to go the slow way
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196 node = self.node(rev)
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197 if self.renamed(node):
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198 return len(self.read(node))
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Mike Edgar <adgar@google.com>
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199 if self.iscensored(rev):
22597
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Mike Edgar <adgar@google.com>
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200 return 0
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201
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Nicolas Dumazet <nicdumz.commits@gmail.com>
parents: 11539
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202 # XXX if self.read(node).startswith("\1\n"), this returns (size+4)
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203 return self._revlog.size(rev)
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204
2887
05257fd28591 filelog: add hash-based comparisons
Matt Mackall <mpm@selenic.com>
parents: 2859
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205 def cmp(self, node, text):
11539
a463e3c50212 cmp: document the fact that we return True if content is different
Nicolas Dumazet <nicdumz.commits@gmail.com>
parents: 10706
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206 """compare text with a given file revision
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Nicolas Dumazet <nicdumz.commits@gmail.com>
parents: 10706
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207
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Nicolas Dumazet <nicdumz.commits@gmail.com>
parents: 10706
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208 returns True if text is different than what is stored.
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Nicolas Dumazet <nicdumz.commits@gmail.com>
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209 """
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1470183068b8 storageutil: invert logic of file data comparison
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210 return not storageutil.filedataequivalent(self, node, text)
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211
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Gregory Szorc <gregory.szorc@gmail.com>
parents: 39801
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212 def verifyintegrity(self, state):
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Gregory Szorc <gregory.szorc@gmail.com>
parents: 39801
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213 return self._revlog.verifyintegrity(state)
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parents: 39801
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214
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215 def storageinfo(
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216 self,
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217 exclusivefiles=False,
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218 sharedfiles=False,
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219 revisionscount=False,
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220 trackedsize=False,
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parents: 42824
diff changeset
221 storedsize=False,
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parents: 42824
diff changeset
222 ):
39874
14e500b58263 revlog: add method for obtaining storage info (API)
Gregory Szorc <gregory.szorc@gmail.com>
parents: 39872
diff changeset
223 return self._revlog.storageinfo(
43076
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diff changeset
224 exclusivefiles=exclusivefiles,
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parents: 42824
diff changeset
225 sharedfiles=sharedfiles,
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parents: 42824
diff changeset
226 revisionscount=revisionscount,
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Augie Fackler <augie@google.com>
parents: 42824
diff changeset
227 trackedsize=trackedsize,
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parents: 42824
diff changeset
228 storedsize=storedsize,
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Augie Fackler <augie@google.com>
parents: 42824
diff changeset
229 )
39874
14e500b58263 revlog: add method for obtaining storage info (API)
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parents: 39872
diff changeset
230
39799
76f92d208f7a filelog: record what's using attributes
Gregory Szorc <gregory.szorc@gmail.com>
parents: 39798
diff changeset
231 # Used by repo upgrade.
37497
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parents: 37443
diff changeset
232 def clone(self, tr, destrevlog, **kwargs):
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parents: 37443
diff changeset
233 if not isinstance(destrevlog, filelog):
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parents: 43076
diff changeset
234 raise error.ProgrammingError(b'expected filelog to clone()')
37497
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parents: 37443
diff changeset
235
1541e1a8e87d filelog: wrap revlog instead of inheriting it (API)
Gregory Szorc <gregory.szorc@gmail.com>
parents: 37443
diff changeset
236 return self._revlog.clone(tr, destrevlog._revlog, **kwargs)
1541e1a8e87d filelog: wrap revlog instead of inheriting it (API)
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parents: 37443
diff changeset
237
43076
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238
39781
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Gregory Szorc <gregory.szorc@gmail.com>
parents: 39310
diff changeset
239 class narrowfilelog(filelog):
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Gregory Szorc <gregory.szorc@gmail.com>
parents: 39310
diff changeset
240 """Filelog variation to be used with narrow stores."""
3e801ffd7269 filelog: custom filelog to be used with narrow repos
Gregory Szorc <gregory.szorc@gmail.com>
parents: 39310
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241
3e801ffd7269 filelog: custom filelog to be used with narrow repos
Gregory Szorc <gregory.szorc@gmail.com>
parents: 39310
diff changeset
242 def __init__(self, opener, path, narrowmatch):
3e801ffd7269 filelog: custom filelog to be used with narrow repos
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parents: 39310
diff changeset
243 super(narrowfilelog, self).__init__(opener, path)
3e801ffd7269 filelog: custom filelog to be used with narrow repos
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parents: 39310
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244 self._narrowmatch = narrowmatch
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parents: 39310
diff changeset
245
3e801ffd7269 filelog: custom filelog to be used with narrow repos
Gregory Szorc <gregory.szorc@gmail.com>
parents: 39310
diff changeset
246 def renamed(self, node):
3e801ffd7269 filelog: custom filelog to be used with narrow repos
Gregory Szorc <gregory.szorc@gmail.com>
parents: 39310
diff changeset
247 res = super(narrowfilelog, self).renamed(node)
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parents: 39310
diff changeset
248
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parents: 39310
diff changeset
249 # Renames that come from outside the narrowspec are problematic
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Gregory Szorc <gregory.szorc@gmail.com>
parents: 39310
diff changeset
250 # because we may lack the base text for the rename. This can result
3e801ffd7269 filelog: custom filelog to be used with narrow repos
Gregory Szorc <gregory.szorc@gmail.com>
parents: 39310
diff changeset
251 # in code attempting to walk the ancestry or compute a diff
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Gregory Szorc <gregory.szorc@gmail.com>
parents: 39310
diff changeset
252 # encountering a missing revision. We address this by silently
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Gregory Szorc <gregory.szorc@gmail.com>
parents: 39310
diff changeset
253 # removing rename metadata if the source file is outside the
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Gregory Szorc <gregory.szorc@gmail.com>
parents: 39310
diff changeset
254 # narrow spec.
3e801ffd7269 filelog: custom filelog to be used with narrow repos
Gregory Szorc <gregory.szorc@gmail.com>
parents: 39310
diff changeset
255 #
3e801ffd7269 filelog: custom filelog to be used with narrow repos
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parents: 39310
diff changeset
256 # A better solution would be to see if the base revision is available,
3e801ffd7269 filelog: custom filelog to be used with narrow repos
Gregory Szorc <gregory.szorc@gmail.com>
parents: 39310
diff changeset
257 # rather than assuming it isn't.
3e801ffd7269 filelog: custom filelog to be used with narrow repos
Gregory Szorc <gregory.szorc@gmail.com>
parents: 39310
diff changeset
258 #
3e801ffd7269 filelog: custom filelog to be used with narrow repos
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parents: 39310
diff changeset
259 # An even better solution would be to teach all consumers of rename
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parents: 39310
diff changeset
260 # metadata that the base revision may not be available.
3e801ffd7269 filelog: custom filelog to be used with narrow repos
Gregory Szorc <gregory.szorc@gmail.com>
parents: 39310
diff changeset
261 #
3e801ffd7269 filelog: custom filelog to be used with narrow repos
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parents: 39310
diff changeset
262 # TODO consider better ways of doing this.
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Gregory Szorc <gregory.szorc@gmail.com>
parents: 39310
diff changeset
263 if res and not self._narrowmatch(res[0]):
3e801ffd7269 filelog: custom filelog to be used with narrow repos
Gregory Szorc <gregory.szorc@gmail.com>
parents: 39310
diff changeset
264 return None
3e801ffd7269 filelog: custom filelog to be used with narrow repos
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parents: 39310
diff changeset
265
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parents: 39310
diff changeset
266 return res
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parents: 39310
diff changeset
267
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Gregory Szorc <gregory.szorc@gmail.com>
parents: 39310
diff changeset
268 def size(self, rev):
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Gregory Szorc <gregory.szorc@gmail.com>
parents: 39310
diff changeset
269 # Because we have a custom renamed() that may lie, we need to call
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parents: 39310
diff changeset
270 # the base renamed() to report accurate results.
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parents: 39310
diff changeset
271 node = self.node(rev)
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Gregory Szorc <gregory.szorc@gmail.com>
parents: 39310
diff changeset
272 if super(narrowfilelog, self).renamed(node):
3e801ffd7269 filelog: custom filelog to be used with narrow repos
Gregory Szorc <gregory.szorc@gmail.com>
parents: 39310
diff changeset
273 return len(self.read(node))
3e801ffd7269 filelog: custom filelog to be used with narrow repos
Gregory Szorc <gregory.szorc@gmail.com>
parents: 39310
diff changeset
274 else:
3e801ffd7269 filelog: custom filelog to be used with narrow repos
Gregory Szorc <gregory.szorc@gmail.com>
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275 return super(narrowfilelog, self).size(rev)
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276
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277 def cmp(self, node, text):
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278 # We don't call `super` because narrow parents can be buggy in case of a
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279 # ambiguous dirstate. Always take the slow path until there is a better
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280 # fix, see issue6150.
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281
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282 # Censored files compare against the empty file.
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283 if self.iscensored(self.rev(node)):
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284 return text != b''
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285
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286 return self.read(node) != text