Mercurial > hg
annotate mercurial/filelog.py @ 39844:0cb3e02e1d1b
filelog: stop proxying checksize() (API)
This was only used by verify code. And the check using it is now
implemented as part of verifyintegrity(). The method is unused
and is revlog-centric, which means it isn't appropriate for the file
storage interface. So remove it.
Differential Revision: https://phab.mercurial-scm.org/D4703
author | Gregory Szorc <gregory.szorc@gmail.com> |
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date | Wed, 19 Sep 2018 11:22:56 -0700 |
parents | 68282a7b29a7 |
children | 62a532045e71 |
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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 . import ( |
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11 error, |
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12 repository, |
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13 revlog, |
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14 ) |
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15 from .utils import ( |
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16 interfaceutil, |
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17 ) |
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18 |
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19 @interfaceutil.implementer(repository.ifilestorage) |
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20 class filelog(object): |
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21 def __init__(self, opener, path): |
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22 self._revlog = revlog.revlog(opener, |
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23 '/'.join(('data', path + '.i')), |
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24 censorable=True) |
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25 # Full name of the user visible file, relative to the repository root. |
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26 # Used by LFS. |
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27 self.filename = path |
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28 # Used by repo upgrade. |
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29 self.index = self._revlog.index |
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30 # Used by changegroup generation. |
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31 self._generaldelta = self._revlog._generaldelta |
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32 |
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33 def __len__(self): |
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34 return len(self._revlog) |
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35 |
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36 def __iter__(self): |
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37 return self._revlog.__iter__() |
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38 |
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39 def revs(self, start=0, stop=None): |
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40 return self._revlog.revs(start=start, stop=stop) |
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41 |
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42 def parents(self, node): |
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43 return self._revlog.parents(node) |
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44 |
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45 def parentrevs(self, rev): |
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46 return self._revlog.parentrevs(rev) |
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47 |
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48 def rev(self, node): |
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49 return self._revlog.rev(node) |
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50 |
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51 def node(self, rev): |
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52 return self._revlog.node(rev) |
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53 |
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54 def lookup(self, node): |
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55 return self._revlog.lookup(node) |
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56 |
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57 def linkrev(self, rev): |
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58 return self._revlog.linkrev(rev) |
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59 |
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60 # Used by LFS, verify. |
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61 def flags(self, rev): |
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62 return self._revlog.flags(rev) |
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63 |
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64 def commonancestorsheads(self, node1, node2): |
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65 return self._revlog.commonancestorsheads(node1, node2) |
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66 |
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67 # Used by dagop.blockdescendants(). |
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68 def descendants(self, revs): |
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69 return self._revlog.descendants(revs) |
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70 |
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71 def heads(self, start=None, stop=None): |
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72 return self._revlog.heads(start, stop) |
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73 |
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74 # Used by hgweb, children extension. |
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75 def children(self, node): |
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76 return self._revlog.children(node) |
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77 |
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78 def deltaparent(self, rev): |
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79 return self._revlog.deltaparent(rev) |
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80 |
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81 def iscensored(self, rev): |
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82 return self._revlog.iscensored(rev) |
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83 |
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84 # Used by verify. |
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85 def rawsize(self, rev): |
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86 return self._revlog.rawsize(rev) |
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87 |
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88 # Might be unused. |
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89 def checkhash(self, text, node, p1=None, p2=None, rev=None): |
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90 return self._revlog.checkhash(text, node, p1=p1, p2=p2, rev=rev) |
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91 |
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92 def revision(self, node, _df=None, raw=False): |
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93 return self._revlog.revision(node, _df=_df, raw=raw) |
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94 |
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95 def revdiff(self, rev1, rev2): |
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96 return self._revlog.revdiff(rev1, rev2) |
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97 |
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98 def emitrevisiondeltas(self, requests): |
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99 return self._revlog.emitrevisiondeltas(requests) |
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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 return self._revlog.addgroup(deltas, linkmapper, transaction, |
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110 addrevisioncb=addrevisioncb) |
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111 |
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112 def getstrippoint(self, minlink): |
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113 return self._revlog.getstrippoint(minlink) |
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114 |
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115 def strip(self, minlink, transaction): |
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116 return self._revlog.strip(minlink, transaction) |
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117 |
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118 def censorrevision(self, tr, node, tombstone=b''): |
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119 return self._revlog.censorrevision(node, tombstone=tombstone) |
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120 |
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121 def files(self): |
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122 return self._revlog.files() |
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123 |
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124 def read(self, node): |
360 | 125 t = self.revision(node) |
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126 if not t.startswith('\1\n'): |
360 | 127 return t |
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128 s = t.index('\1\n', 2) |
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129 return t[s + 2:] |
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131 def add(self, text, meta, transaction, link, p1=None, p2=None): | |
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132 if meta or text.startswith('\1\n'): |
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133 text = revlog.packmeta(meta, text) |
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134 return self.addrevision(text, transaction, link, p1, p2) |
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135 |
1116 | 136 def renamed(self, node): |
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137 if self.parents(node)[0] != revlog.nullid: |
1116 | 138 return False |
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139 t = self.revision(node) |
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140 m = revlog.parsemeta(t)[0] |
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141 # copy and copyrev occur in pairs. In rare cases due to bugs, |
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142 # one can occur without the other. |
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143 if m and "copy" in m and "copyrev" in m: |
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144 return (m["copy"], revlog.bin(m["copyrev"])) |
1116 | 145 return False |
146 | |
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147 def size(self, rev): |
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148 """return the size of a given revision""" |
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149 |
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150 # for revisions with renames, we have to go the slow way |
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151 node = self.node(rev) |
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152 if self.renamed(node): |
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153 return len(self.read(node)) |
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154 if self.iscensored(rev): |
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155 return 0 |
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156 |
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157 # XXX if self.read(node).startswith("\1\n"), this returns (size+4) |
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158 return self._revlog.size(rev) |
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159 |
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160 def cmp(self, node, text): |
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161 """compare text with a given file revision |
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162 |
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163 returns True if text is different than what is stored. |
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164 """ |
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165 |
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166 t = text |
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167 if text.startswith('\1\n'): |
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168 t = '\1\n\1\n' + text |
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169 |
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170 samehashes = not self._revlog.cmp(node, t) |
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171 if samehashes: |
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172 return False |
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173 |
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174 # censored files compare against the empty file |
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175 if self.iscensored(self.rev(node)): |
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176 return text != '' |
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177 |
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178 # renaming a file produces a different hash, even if the data |
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179 # remains unchanged. Check if it's the case (slow): |
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180 if self.renamed(node): |
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181 t2 = self.read(node) |
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182 return t2 != text |
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183 |
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184 return True |
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185 |
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186 def verifyintegrity(self, state): |
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187 return self._revlog.verifyintegrity(state) |
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188 |
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189 # TODO these aren't part of the interface and aren't internal methods. |
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190 # Callers should be fixed to not use them. |
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191 |
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192 # Used by LFS. |
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193 @property |
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194 def filename(self): |
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195 return self._revlog.filename |
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196 |
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197 @filename.setter |
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198 def filename(self, value): |
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199 self._revlog.filename = value |
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200 |
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201 # Used by bundlefilelog, unionfilelog. |
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202 @property |
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203 def indexfile(self): |
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204 return self._revlog.indexfile |
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205 |
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206 @indexfile.setter |
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207 def indexfile(self, value): |
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208 self._revlog.indexfile = value |
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209 |
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210 # Used by LFS, repo upgrade. |
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211 @property |
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212 def opener(self): |
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213 return self._revlog.opener |
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214 |
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215 # Used by repo upgrade. |
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216 def clone(self, tr, destrevlog, **kwargs): |
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217 if not isinstance(destrevlog, filelog): |
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218 raise error.ProgrammingError('expected filelog to clone()') |
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219 |
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220 return self._revlog.clone(tr, destrevlog._revlog, **kwargs) |
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221 |
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222 class narrowfilelog(filelog): |
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223 """Filelog variation to be used with narrow stores.""" |
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224 |
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225 def __init__(self, opener, path, narrowmatch): |
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226 super(narrowfilelog, self).__init__(opener, path) |
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227 self._narrowmatch = narrowmatch |
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228 |
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229 def renamed(self, node): |
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230 res = super(narrowfilelog, self).renamed(node) |
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231 |
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232 # Renames that come from outside the narrowspec are problematic |
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233 # because we may lack the base text for the rename. This can result |
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234 # in code attempting to walk the ancestry or compute a diff |
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235 # encountering a missing revision. We address this by silently |
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236 # removing rename metadata if the source file is outside the |
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237 # narrow spec. |
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238 # |
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239 # A better solution would be to see if the base revision is available, |
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240 # rather than assuming it isn't. |
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241 # |
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242 # An even better solution would be to teach all consumers of rename |
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243 # metadata that the base revision may not be available. |
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244 # |
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245 # TODO consider better ways of doing this. |
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246 if res and not self._narrowmatch(res[0]): |
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247 return None |
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248 |
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249 return res |
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250 |
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251 def size(self, rev): |
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252 # Because we have a custom renamed() that may lie, we need to call |
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253 # the base renamed() to report accurate results. |
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254 node = self.node(rev) |
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255 if super(narrowfilelog, self).renamed(node): |
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256 return len(self.read(node)) |
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257 else: |
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258 return super(narrowfilelog, self).size(rev) |
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259 |
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260 def cmp(self, node, text): |
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261 different = super(narrowfilelog, self).cmp(node, text) |
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262 |
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263 # Because renamed() may lie, we may get false positives for |
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264 # different content. Check for this by comparing against the original |
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265 # renamed() implementation. |
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266 if different: |
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267 if super(narrowfilelog, self).renamed(node): |
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268 t2 = self.read(node) |
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269 return t2 != text |
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270 |
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271 return different |