Mercurial > hg
annotate mercurial/filelog.py @ 44979:2fd8a8c11273 stable
share: provide a more useful text for hg help
Differential Revision: https://phab.mercurial-scm.org/D8651
author | Joerg Sonnenberger <joerg@bec.de> |
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date | Tue, 23 Jun 2020 16:07:18 +0200 |
parents | 687b865b95ad |
children | a5206e71c536 |
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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 revlog, |
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18 ) |
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19 from .interfaces import ( |
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20 repository, |
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21 util as interfaceutil, |
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22 ) |
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23 from .utils import storageutil |
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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, b'/'.join((b'data', path + b'.i')), censorable=True |
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31 ) |
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32 # Full name of the user visible file, relative to the repository root. |
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33 # Used by LFS. |
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34 self._revlog.filename = path |
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35 |
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36 def __len__(self): |
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37 return len(self._revlog) |
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38 |
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39 def __iter__(self): |
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40 return self._revlog.__iter__() |
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41 |
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42 def hasnode(self, node): |
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43 if node in (nullid, nullrev): |
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44 return False |
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45 |
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46 try: |
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47 self._revlog.rev(node) |
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48 return True |
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49 except (TypeError, ValueError, IndexError, error.LookupError): |
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50 return False |
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51 |
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52 def revs(self, start=0, stop=None): |
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53 return self._revlog.revs(start=start, stop=stop) |
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54 |
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55 def parents(self, node): |
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56 return self._revlog.parents(node) |
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57 |
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58 def parentrevs(self, rev): |
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59 return self._revlog.parentrevs(rev) |
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60 |
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61 def rev(self, node): |
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62 return self._revlog.rev(node) |
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63 |
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64 def node(self, rev): |
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65 return self._revlog.node(rev) |
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66 |
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67 def lookup(self, node): |
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68 return storageutil.fileidlookup( |
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69 self._revlog, node, self._revlog.indexfile |
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70 ) |
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71 |
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72 def linkrev(self, rev): |
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73 return self._revlog.linkrev(rev) |
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74 |
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75 def commonancestorsheads(self, node1, node2): |
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76 return self._revlog.commonancestorsheads(node1, node2) |
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77 |
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78 # Used by dagop.blockdescendants(). |
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79 def descendants(self, revs): |
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80 return self._revlog.descendants(revs) |
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81 |
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82 def heads(self, start=None, stop=None): |
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83 return self._revlog.heads(start, stop) |
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84 |
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85 # Used by hgweb, children extension. |
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86 def children(self, node): |
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87 return self._revlog.children(node) |
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88 |
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89 def iscensored(self, rev): |
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90 return self._revlog.iscensored(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 rawdata(self, node, _df=None): |
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96 return self._revlog.rawdata(node, _df=_df) |
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97 |
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98 def emitrevisions( |
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99 self, |
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100 nodes, |
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101 nodesorder=None, |
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102 revisiondata=False, |
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103 assumehaveparentrevisions=False, |
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104 deltamode=repository.CG_DELTAMODE_STD, |
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105 ): |
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106 return self._revlog.emitrevisions( |
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107 nodes, |
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108 nodesorder=nodesorder, |
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109 revisiondata=revisiondata, |
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110 assumehaveparentrevisions=assumehaveparentrevisions, |
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111 deltamode=deltamode, |
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112 ) |
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113 |
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114 def addrevision( |
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115 self, |
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116 revisiondata, |
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117 transaction, |
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118 linkrev, |
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119 p1, |
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120 p2, |
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121 node=None, |
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122 flags=revlog.REVIDX_DEFAULT_FLAGS, |
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123 cachedelta=None, |
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124 ): |
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125 return self._revlog.addrevision( |
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126 revisiondata, |
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127 transaction, |
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128 linkrev, |
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129 p1, |
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130 p2, |
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131 node=node, |
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132 flags=flags, |
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133 cachedelta=cachedelta, |
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134 ) |
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135 |
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136 def addgroup( |
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137 self, |
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138 deltas, |
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139 linkmapper, |
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140 transaction, |
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141 addrevisioncb=None, |
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142 maybemissingparents=False, |
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143 ): |
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144 if maybemissingparents: |
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145 raise error.Abort( |
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146 _( |
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147 b'revlog storage does not support missing ' |
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148 b'parents write mode' |
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149 ) |
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150 ) |
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151 |
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152 return self._revlog.addgroup( |
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153 deltas, linkmapper, transaction, addrevisioncb=addrevisioncb |
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154 ) |
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155 |
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156 def getstrippoint(self, minlink): |
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157 return self._revlog.getstrippoint(minlink) |
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158 |
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159 def strip(self, minlink, transaction): |
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160 return self._revlog.strip(minlink, transaction) |
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161 |
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162 def censorrevision(self, tr, node, tombstone=b''): |
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163 return self._revlog.censorrevision(tr, node, tombstone=tombstone) |
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164 |
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165 def files(self): |
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166 return self._revlog.files() |
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167 |
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168 def read(self, node): |
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169 return storageutil.filtermetadata(self.revision(node)) |
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171 def add(self, text, meta, transaction, link, p1=None, p2=None): | |
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172 if meta or text.startswith(b'\1\n'): |
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173 text = storageutil.packmeta(meta, text) |
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174 return self.addrevision(text, transaction, link, p1, p2) |
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175 |
1116 | 176 def renamed(self, node): |
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177 return storageutil.filerevisioncopied(self, node) |
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179 def size(self, rev): |
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180 """return the size of a given revision""" |
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181 |
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182 # for revisions with renames, we have to go the slow way |
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183 node = self.node(rev) |
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184 if self.renamed(node): |
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185 return len(self.read(node)) |
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186 if self.iscensored(rev): |
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187 return 0 |
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188 |
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189 # XXX if self.read(node).startswith("\1\n"), this returns (size+4) |
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190 return self._revlog.size(rev) |
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191 |
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192 def cmp(self, node, text): |
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193 """compare text with a given file revision |
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194 |
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195 returns True if text is different than what is stored. |
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196 """ |
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197 return not storageutil.filedataequivalent(self, node, text) |
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198 |
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199 def verifyintegrity(self, state): |
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200 return self._revlog.verifyintegrity(state) |
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201 |
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202 def storageinfo( |
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203 self, |
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204 exclusivefiles=False, |
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205 sharedfiles=False, |
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206 revisionscount=False, |
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207 trackedsize=False, |
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208 storedsize=False, |
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209 ): |
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210 return self._revlog.storageinfo( |
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211 exclusivefiles=exclusivefiles, |
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212 sharedfiles=sharedfiles, |
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213 revisionscount=revisionscount, |
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214 trackedsize=trackedsize, |
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215 storedsize=storedsize, |
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216 ) |
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217 |
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218 # TODO these aren't part of the interface and aren't internal methods. |
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219 # Callers should be fixed to not use them. |
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220 |
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221 # Used by bundlefilelog, unionfilelog. |
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222 @property |
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223 def indexfile(self): |
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224 return self._revlog.indexfile |
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225 |
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226 @indexfile.setter |
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227 def indexfile(self, value): |
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228 self._revlog.indexfile = value |
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229 |
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230 # Used by repo upgrade. |
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231 def clone(self, tr, destrevlog, **kwargs): |
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232 if not isinstance(destrevlog, filelog): |
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233 raise error.ProgrammingError(b'expected filelog to clone()') |
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234 |
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235 return self._revlog.clone(tr, destrevlog._revlog, **kwargs) |
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236 |
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237 |
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238 class narrowfilelog(filelog): |
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239 """Filelog variation to be used with narrow stores.""" |
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240 |
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241 def __init__(self, opener, path, narrowmatch): |
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242 super(narrowfilelog, self).__init__(opener, path) |
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243 self._narrowmatch = narrowmatch |
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244 |
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245 def renamed(self, node): |
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246 res = super(narrowfilelog, self).renamed(node) |
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247 |
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248 # Renames that come from outside the narrowspec are problematic |
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249 # because we may lack the base text for the rename. This can result |
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250 # in code attempting to walk the ancestry or compute a diff |
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251 # encountering a missing revision. We address this by silently |
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252 # removing rename metadata if the source file is outside the |
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253 # narrow spec. |
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254 # |
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255 # A better solution would be to see if the base revision is available, |
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256 # rather than assuming it isn't. |
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257 # |
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258 # An even better solution would be to teach all consumers of rename |
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259 # metadata that the base revision may not be available. |
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260 # |
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261 # TODO consider better ways of doing this. |
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262 if res and not self._narrowmatch(res[0]): |
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263 return None |
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264 |
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265 return res |
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266 |
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267 def size(self, rev): |
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268 # Because we have a custom renamed() that may lie, we need to call |
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269 # the base renamed() to report accurate results. |
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270 node = self.node(rev) |
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271 if super(narrowfilelog, self).renamed(node): |
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272 return len(self.read(node)) |
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273 else: |
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274 return super(narrowfilelog, self).size(rev) |
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275 |
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276 def cmp(self, node, text): |
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277 different = super(narrowfilelog, self).cmp(node, text) |
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278 |
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279 # Because renamed() may lie, we may get false positives for |
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280 # different content. Check for this by comparing against the original |
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281 # renamed() implementation. |
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282 if different: |
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283 if super(narrowfilelog, self).renamed(node): |
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284 t2 = self.read(node) |
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285 return t2 != text |
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286 |
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287 return different |