Mercurial > hg
annotate mercurial/filelog.py @ 50896:b2b8c25f9462
hgwebmod: use sysstr to check for attribute presence
We do not need bytes here.
author | Pierre-Yves David <pierre-yves.david@octobus.net> |
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date | Wed, 30 Aug 2023 13:28:09 +0200 |
parents | 32837c7e2e4b |
children | 33d2f0164d0d |
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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 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 |
10263 | 6 # GNU General Public License version 2 or any later version. |
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7 |
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8 |
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9 from .i18n import _ |
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10 from .node import nullrev |
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11 from . import ( |
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12 error, |
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13 revlog, |
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14 ) |
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15 from .interfaces import ( |
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16 repository, |
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17 util as interfaceutil, |
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18 ) |
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19 from .utils import storageutil |
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20 from .revlogutils import ( |
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21 constants as revlog_constants, |
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22 rewrite, |
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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: |
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28 def __init__(self, opener, path, try_split=False): |
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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 radix=b'/'.join((b'data', path)), |
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34 censorable=True, |
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35 canonical_parent_order=False, # see comment in revlog.py |
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36 try_split=try_split, |
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37 ) |
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38 # Full name of the user visible file, relative to the repository root. |
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39 # Used by LFS. |
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40 self._revlog.filename = path |
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41 self.nullid = self._revlog.nullid |
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42 opts = opener.options |
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43 self._fix_issue6528 = opts.get(b'issue6528.fix-incoming', True) |
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44 |
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45 def get_revlog(self): |
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46 """return an actual revlog instance if any |
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47 |
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48 This exist because a lot of code leverage the fact the underlying |
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49 storage is a revlog for optimization, so giving simple way to access |
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50 the revlog instance helps such code. |
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51 """ |
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52 return self._revlog |
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53 |
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54 def __len__(self): |
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55 return len(self._revlog) |
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56 |
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57 def __iter__(self): |
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58 return self._revlog.__iter__() |
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59 |
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60 def hasnode(self, node): |
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61 if node in (self.nullid, nullrev): |
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62 return False |
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63 |
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64 try: |
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65 self._revlog.rev(node) |
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66 return True |
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67 except (TypeError, ValueError, IndexError, error.LookupError): |
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68 return False |
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69 |
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70 def revs(self, start=0, stop=None): |
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71 return self._revlog.revs(start=start, stop=stop) |
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72 |
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73 def parents(self, node): |
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74 return self._revlog.parents(node) |
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75 |
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76 def parentrevs(self, rev): |
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77 return self._revlog.parentrevs(rev) |
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78 |
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79 def rev(self, node): |
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80 return self._revlog.rev(node) |
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81 |
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82 def node(self, rev): |
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83 return self._revlog.node(rev) |
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84 |
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85 def lookup(self, node): |
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86 return storageutil.fileidlookup( |
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87 self._revlog, node, self._revlog.display_id |
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88 ) |
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89 |
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90 def linkrev(self, rev): |
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91 return self._revlog.linkrev(rev) |
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92 |
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93 def commonancestorsheads(self, node1, node2): |
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94 return self._revlog.commonancestorsheads(node1, node2) |
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95 |
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96 # Used by dagop.blockdescendants(). |
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97 def descendants(self, revs): |
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98 return self._revlog.descendants(revs) |
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99 |
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100 def heads(self, start=None, stop=None): |
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101 return self._revlog.heads(start, stop) |
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102 |
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103 # Used by hgweb, children extension. |
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104 def children(self, node): |
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105 return self._revlog.children(node) |
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106 |
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107 def iscensored(self, rev): |
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108 return self._revlog.iscensored(rev) |
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109 |
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110 def revision(self, node, _df=None): |
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111 return self._revlog.revision(node, _df=_df) |
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112 |
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113 def rawdata(self, node, _df=None): |
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114 return self._revlog.rawdata(node, _df=_df) |
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115 |
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116 def emitrevisions( |
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117 self, |
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118 nodes, |
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119 nodesorder=None, |
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120 revisiondata=False, |
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121 assumehaveparentrevisions=False, |
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122 deltamode=repository.CG_DELTAMODE_STD, |
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123 sidedata_helpers=None, |
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124 debug_info=None, |
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125 ): |
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126 return self._revlog.emitrevisions( |
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127 nodes, |
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128 nodesorder=nodesorder, |
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129 revisiondata=revisiondata, |
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130 assumehaveparentrevisions=assumehaveparentrevisions, |
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131 deltamode=deltamode, |
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132 sidedata_helpers=sidedata_helpers, |
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133 debug_info=debug_info, |
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134 ) |
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135 |
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136 def addrevision( |
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137 self, |
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138 revisiondata, |
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139 transaction, |
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140 linkrev, |
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141 p1, |
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142 p2, |
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143 node=None, |
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144 flags=revlog.REVIDX_DEFAULT_FLAGS, |
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145 cachedelta=None, |
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146 ): |
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147 return self._revlog.addrevision( |
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148 revisiondata, |
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149 transaction, |
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150 linkrev, |
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151 p1, |
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152 p2, |
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153 node=node, |
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154 flags=flags, |
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155 cachedelta=cachedelta, |
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156 ) |
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157 |
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158 def addgroup( |
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159 self, |
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160 deltas, |
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161 linkmapper, |
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162 transaction, |
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163 addrevisioncb=None, |
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164 duplicaterevisioncb=None, |
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165 maybemissingparents=False, |
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166 debug_info=None, |
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167 delta_base_reuse_policy=None, |
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168 ): |
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169 if maybemissingparents: |
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170 raise error.Abort( |
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171 _( |
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172 b'revlog storage does not support missing ' |
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173 b'parents write mode' |
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174 ) |
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175 ) |
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176 |
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177 with self._revlog._writing(transaction): |
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178 |
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179 if self._fix_issue6528: |
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180 deltas = rewrite.filter_delta_issue6528(self._revlog, deltas) |
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181 |
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182 return self._revlog.addgroup( |
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183 deltas, |
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184 linkmapper, |
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185 transaction, |
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186 addrevisioncb=addrevisioncb, |
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187 duplicaterevisioncb=duplicaterevisioncb, |
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188 debug_info=debug_info, |
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189 delta_base_reuse_policy=delta_base_reuse_policy, |
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190 ) |
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191 |
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192 def getstrippoint(self, minlink): |
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193 return self._revlog.getstrippoint(minlink) |
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194 |
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195 def strip(self, minlink, transaction): |
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196 return self._revlog.strip(minlink, transaction) |
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197 |
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198 def censorrevision(self, tr, node, tombstone=b''): |
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199 return self._revlog.censorrevision(tr, node, tombstone=tombstone) |
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200 |
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201 def files(self): |
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202 return self._revlog.files() |
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203 |
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204 def read(self, node): |
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205 return storageutil.filtermetadata(self.revision(node)) |
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207 def add(self, text, meta, transaction, link, p1=None, p2=None): | |
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208 if meta or text.startswith(b'\1\n'): |
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209 text = storageutil.packmeta(meta, text) |
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210 rev = self.addrevision(text, transaction, link, p1, p2) |
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211 return self.node(rev) |
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212 |
1116 | 213 def renamed(self, node): |
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214 return storageutil.filerevisioncopied(self, node) |
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216 def size(self, rev): |
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217 """return the size of a given revision""" |
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218 |
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219 # for revisions with renames, we have to go the slow way |
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220 node = self.node(rev) |
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221 if self.iscensored(rev): |
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222 return 0 |
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223 if self.renamed(node): |
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224 return len(self.read(node)) |
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225 |
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226 # XXX if self.read(node).startswith("\1\n"), this returns (size+4) |
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227 # XXX See also basefilectx.cmp. |
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228 return self._revlog.size(rev) |
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229 |
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230 def cmp(self, node, text): |
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231 """compare text with a given file revision |
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232 |
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233 returns True if text is different than what is stored. |
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234 """ |
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235 return not storageutil.filedataequivalent(self, node, text) |
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236 |
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237 def verifyintegrity(self, state): |
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238 return self._revlog.verifyintegrity(state) |
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239 |
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240 def storageinfo( |
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241 self, |
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242 exclusivefiles=False, |
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243 sharedfiles=False, |
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244 revisionscount=False, |
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245 trackedsize=False, |
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246 storedsize=False, |
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247 ): |
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248 return self._revlog.storageinfo( |
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249 exclusivefiles=exclusivefiles, |
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250 sharedfiles=sharedfiles, |
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251 revisionscount=revisionscount, |
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252 trackedsize=trackedsize, |
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253 storedsize=storedsize, |
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254 ) |
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255 |
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256 # Used by repo upgrade. |
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257 def clone(self, tr, destrevlog, **kwargs): |
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258 if not isinstance(destrevlog, filelog): |
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259 msg = b'expected filelog to clone(), not %r' |
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260 msg %= destrevlog |
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261 raise error.ProgrammingError(msg) |
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262 |
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263 return self._revlog.clone(tr, destrevlog._revlog, **kwargs) |
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264 |
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265 |
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266 class narrowfilelog(filelog): |
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267 """Filelog variation to be used with narrow stores.""" |
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268 |
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269 def __init__(self, opener, path, narrowmatch, try_split=False): |
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270 super(narrowfilelog, self).__init__(opener, path, try_split=try_split) |
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271 self._narrowmatch = narrowmatch |
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272 |
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273 def renamed(self, node): |
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274 res = super(narrowfilelog, self).renamed(node) |
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275 |
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276 # Renames that come from outside the narrowspec are problematic |
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277 # because we may lack the base text for the rename. This can result |
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278 # in code attempting to walk the ancestry or compute a diff |
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279 # encountering a missing revision. We address this by silently |
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280 # removing rename metadata if the source file is outside the |
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281 # narrow spec. |
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282 # |
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283 # A better solution would be to see if the base revision is available, |
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284 # rather than assuming it isn't. |
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285 # |
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286 # An even better solution would be to teach all consumers of rename |
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287 # metadata that the base revision may not be available. |
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288 # |
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289 # TODO consider better ways of doing this. |
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290 if res and not self._narrowmatch(res[0]): |
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291 return None |
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292 |
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293 return res |
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294 |
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295 def size(self, rev): |
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296 # Because we have a custom renamed() that may lie, we need to call |
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297 # the base renamed() to report accurate results. |
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298 node = self.node(rev) |
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299 if super(narrowfilelog, self).renamed(node): |
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300 return len(self.read(node)) |
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301 else: |
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302 return super(narrowfilelog, self).size(rev) |
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303 |
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304 def cmp(self, node, text): |
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305 # We don't call `super` because narrow parents can be buggy in case of a |
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306 # ambiguous dirstate. Always take the slow path until there is a better |
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307 # fix, see issue6150. |
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308 |
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309 # Censored files compare against the empty file. |
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310 if self.iscensored(self.rev(node)): |
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311 return text != b'' |
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312 |
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313 return self.read(node) != text |