Mercurial > hg
annotate mercurial/filelog.py @ 42323:c2b83c957621 stable
localrepo: grab mixedrepostorecache class from 526750cdd02d
On default, Martin von Zweigbergk <martinvonz@google.com> introduced a more
advance filecache decorator. I need this decorator to fix a bug on stable. So I
am grafting the relevant part of 526750cdd02d.
author | Pierre-Yves David <pierre-yves.david@octobus.net> |
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date | Mon, 20 May 2019 10:08:17 +0200 |
parents | 6a917075535a |
children | bf1e8d2ab900 |
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1089 | 1 # filelog.py - file history class for mercurial |
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2 # |
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3 # Copyright 2005-2007 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 of the |
10263 | 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 ( |
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12 nullid, |
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13 nullrev, |
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14 ) |
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15 from . import ( |
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16 error, |
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17 repository, |
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18 revlog, |
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19 ) |
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20 from .utils import ( |
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21 interfaceutil, |
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22 storageutil, |
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23 ) |
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24 |
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25 @interfaceutil.implementer(repository.ifilestorage) |
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26 class filelog(object): |
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27 def __init__(self, opener, path): |
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28 self._revlog = revlog.revlog(opener, |
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29 '/'.join(('data', path + '.i')), |
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30 censorable=True) |
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31 # Full name of the user visible file, relative to the repository root. |
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32 # Used by LFS. |
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33 self._revlog.filename = path |
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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 (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(self._revlog, node, |
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68 self._revlog.indexfile) |
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69 |
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70 def linkrev(self, rev): |
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71 return self._revlog.linkrev(rev) |
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72 |
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73 def commonancestorsheads(self, node1, node2): |
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74 return self._revlog.commonancestorsheads(node1, node2) |
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75 |
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76 # Used by dagop.blockdescendants(). |
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77 def descendants(self, revs): |
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78 return self._revlog.descendants(revs) |
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79 |
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80 def heads(self, start=None, stop=None): |
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81 return self._revlog.heads(start, stop) |
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82 |
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83 # Used by hgweb, children extension. |
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84 def children(self, node): |
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85 return self._revlog.children(node) |
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86 |
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87 def iscensored(self, rev): |
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88 return self._revlog.iscensored(rev) |
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89 |
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90 def revision(self, node, _df=None, raw=False): |
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91 return self._revlog.revision(node, _df=_df, raw=raw) |
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92 |
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93 def emitrevisions(self, nodes, nodesorder=None, |
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94 revisiondata=False, assumehaveparentrevisions=False, |
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95 deltamode=repository.CG_DELTAMODE_STD): |
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96 return self._revlog.emitrevisions( |
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97 nodes, nodesorder=nodesorder, revisiondata=revisiondata, |
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98 assumehaveparentrevisions=assumehaveparentrevisions, |
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99 deltamode=deltamode) |
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100 |
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101 def addrevision(self, revisiondata, transaction, linkrev, p1, p2, |
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102 node=None, flags=revlog.REVIDX_DEFAULT_FLAGS, |
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103 cachedelta=None): |
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104 return self._revlog.addrevision(revisiondata, transaction, linkrev, |
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105 p1, p2, node=node, flags=flags, |
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106 cachedelta=cachedelta) |
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107 |
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108 def addgroup(self, deltas, linkmapper, transaction, addrevisioncb=None, |
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109 maybemissingparents=False): |
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110 if maybemissingparents: |
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111 raise error.Abort(_('revlog storage does not support missing ' |
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112 'parents write mode')) |
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113 |
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114 return self._revlog.addgroup(deltas, linkmapper, transaction, |
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115 addrevisioncb=addrevisioncb) |
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116 |
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117 def getstrippoint(self, minlink): |
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118 return self._revlog.getstrippoint(minlink) |
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119 |
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120 def strip(self, minlink, transaction): |
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121 return self._revlog.strip(minlink, transaction) |
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122 |
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123 def censorrevision(self, tr, node, tombstone=b''): |
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124 return self._revlog.censorrevision(tr, node, tombstone=tombstone) |
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125 |
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126 def files(self): |
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127 return self._revlog.files() |
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128 |
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129 def read(self, node): |
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130 return storageutil.filtermetadata(self.revision(node)) |
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132 def add(self, text, meta, transaction, link, p1=None, p2=None): | |
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133 if meta or text.startswith('\1\n'): |
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134 text = storageutil.packmeta(meta, text) |
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135 return self.addrevision(text, transaction, link, p1, p2) |
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136 |
1116 | 137 def renamed(self, node): |
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138 return storageutil.filerevisioncopied(self, node) |
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140 def size(self, rev): |
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141 """return the size of a given revision""" |
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142 |
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143 # for revisions with renames, we have to go the slow way |
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144 node = self.node(rev) |
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145 if self.renamed(node): |
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146 return len(self.read(node)) |
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147 if self.iscensored(rev): |
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148 return 0 |
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149 |
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150 # XXX if self.read(node).startswith("\1\n"), this returns (size+4) |
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151 return self._revlog.size(rev) |
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152 |
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153 def cmp(self, node, text): |
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154 """compare text with a given file revision |
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155 |
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156 returns True if text is different than what is stored. |
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157 """ |
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158 return not storageutil.filedataequivalent(self, node, text) |
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159 |
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160 def verifyintegrity(self, state): |
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161 return self._revlog.verifyintegrity(state) |
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162 |
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163 def storageinfo(self, exclusivefiles=False, sharedfiles=False, |
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164 revisionscount=False, trackedsize=False, |
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165 storedsize=False): |
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166 return self._revlog.storageinfo( |
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167 exclusivefiles=exclusivefiles, sharedfiles=sharedfiles, |
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168 revisionscount=revisionscount, trackedsize=trackedsize, |
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169 storedsize=storedsize) |
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170 |
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171 # TODO these aren't part of the interface and aren't internal methods. |
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172 # Callers should be fixed to not use them. |
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173 |
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174 # Used by bundlefilelog, unionfilelog. |
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175 @property |
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176 def indexfile(self): |
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177 return self._revlog.indexfile |
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178 |
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179 @indexfile.setter |
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180 def indexfile(self, value): |
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181 self._revlog.indexfile = value |
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182 |
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183 # Used by repo upgrade. |
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184 def clone(self, tr, destrevlog, **kwargs): |
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185 if not isinstance(destrevlog, filelog): |
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186 raise error.ProgrammingError('expected filelog to clone()') |
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187 |
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188 return self._revlog.clone(tr, destrevlog._revlog, **kwargs) |
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189 |
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190 class narrowfilelog(filelog): |
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191 """Filelog variation to be used with narrow stores.""" |
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192 |
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193 def __init__(self, opener, path, narrowmatch): |
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194 super(narrowfilelog, self).__init__(opener, path) |
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195 self._narrowmatch = narrowmatch |
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196 |
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197 def renamed(self, node): |
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198 res = super(narrowfilelog, self).renamed(node) |
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199 |
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200 # Renames that come from outside the narrowspec are problematic |
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201 # because we may lack the base text for the rename. This can result |
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202 # in code attempting to walk the ancestry or compute a diff |
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203 # encountering a missing revision. We address this by silently |
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204 # removing rename metadata if the source file is outside the |
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205 # narrow spec. |
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206 # |
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207 # A better solution would be to see if the base revision is available, |
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208 # rather than assuming it isn't. |
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209 # |
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210 # An even better solution would be to teach all consumers of rename |
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211 # metadata that the base revision may not be available. |
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212 # |
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213 # TODO consider better ways of doing this. |
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214 if res and not self._narrowmatch(res[0]): |
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215 return None |
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216 |
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217 return res |
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218 |
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219 def size(self, rev): |
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220 # Because we have a custom renamed() that may lie, we need to call |
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221 # the base renamed() to report accurate results. |
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222 node = self.node(rev) |
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223 if super(narrowfilelog, self).renamed(node): |
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224 return len(self.read(node)) |
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225 else: |
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226 return super(narrowfilelog, self).size(rev) |
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227 |
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228 def cmp(self, node, text): |
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229 different = super(narrowfilelog, self).cmp(node, text) |
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230 |
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
39283
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changeset
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231 # Because renamed() may lie, we may get false positives for |
3e801ffd7269
filelog: custom filelog to be used with narrow repos
Gregory Szorc <gregory.szorc@gmail.com>
parents:
39283
diff
changeset
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232 # different content. Check for this by comparing against the original |
3e801ffd7269
filelog: custom filelog to be used with narrow repos
Gregory Szorc <gregory.szorc@gmail.com>
parents:
39283
diff
changeset
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233 # renamed() implementation. |
3e801ffd7269
filelog: custom filelog to be used with narrow repos
Gregory Szorc <gregory.szorc@gmail.com>
parents:
39283
diff
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234 if different: |
3e801ffd7269
filelog: custom filelog to be used with narrow repos
Gregory Szorc <gregory.szorc@gmail.com>
parents:
39283
diff
changeset
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235 if super(narrowfilelog, self).renamed(node): |
3e801ffd7269
filelog: custom filelog to be used with narrow repos
Gregory Szorc <gregory.szorc@gmail.com>
parents:
39283
diff
changeset
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236 t2 = self.read(node) |
3e801ffd7269
filelog: custom filelog to be used with narrow repos
Gregory Szorc <gregory.szorc@gmail.com>
parents:
39283
diff
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237 return t2 != text |
3e801ffd7269
filelog: custom filelog to be used with narrow repos
Gregory Szorc <gregory.szorc@gmail.com>
parents:
39283
diff
changeset
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238 |
3e801ffd7269
filelog: custom filelog to be used with narrow repos
Gregory Szorc <gregory.szorc@gmail.com>
parents:
39283
diff
changeset
|
239 return different |