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>
date Tue, 23 Jun 2020 16:07:18 +0200
parents 687b865b95ad
children a5206e71c536
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1 # filelog.py - file history class for mercurial
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2 #
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3 # Copyright 2005-2007 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
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6 # GNU General Public License version 2 or any later version.
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7
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8 from __future__ import absolute_import
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9
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10 from .i18n import _
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11 from .node import (
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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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Augie Fackler <augie@google.com>
parents: 42814
diff changeset
143 ):
40389
1b183edbb68e repository: teach addgroup() to receive data with missing parents
Gregory Szorc <gregory.szorc@gmail.com>
parents: 40387
diff changeset
144 if maybemissingparents:
43076
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parents: 42814
diff changeset
145 raise error.Abort(
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parents: 42814
diff changeset
146 _(
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Augie Fackler <augie@google.com>
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diff changeset
147 b'revlog storage does not support missing '
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parents: 43076
diff changeset
148 b'parents write mode'
43076
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parents: 42814
diff changeset
149 )
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parents: 42814
diff changeset
150 )
40389
1b183edbb68e repository: teach addgroup() to receive data with missing parents
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parents: 40387
diff changeset
151
43076
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diff changeset
152 return self._revlog.addgroup(
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parents: 42814
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153 deltas, linkmapper, transaction, addrevisioncb=addrevisioncb
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parents: 42814
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154 )
37497
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155
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Gregory Szorc <gregory.szorc@gmail.com>
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156 def getstrippoint(self, minlink):
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parents: 37443
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157 return self._revlog.getstrippoint(minlink)
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parents: 37443
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158
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Gregory Szorc <gregory.szorc@gmail.com>
parents: 37443
diff changeset
159 def strip(self, minlink, transaction):
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parents: 37443
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160 return self._revlog.strip(minlink, transaction)
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parents: 37443
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161
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Gregory Szorc <gregory.szorc@gmail.com>
parents: 39765
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162 def censorrevision(self, tr, node, tombstone=b''):
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parents: 40007
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163 return self._revlog.censorrevision(tr, node, tombstone=tombstone)
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parents: 39765
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164
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165 def files(self):
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Gregory Szorc <gregory.szorc@gmail.com>
parents: 37443
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166 return self._revlog.files()
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167
0
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
168 def read(self, node):
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1b65fb4d43d6 storageutil: new function for extracting metadata-less content from text
Gregory Szorc <gregory.szorc@gmail.com>
parents: 39878
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169 return storageutil.filtermetadata(self.revision(node))
360
10519e4cbd02 filelog: add metadata support
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parents: 358
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170
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mpm@selenic.com
parents: 358
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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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parents: 39876
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173 text = storageutil.packmeta(meta, text)
0
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mpm@selenic.com
parents:
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174 return self.addrevision(text, transaction, link, p1, p2)
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175
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mpm@selenic.com
parents: 1089
diff changeset
176 def renamed(self, node):
40005
1d97a332c6d9 storageutil: extract copy metadata retrieval out of filelog
Gregory Szorc <gregory.szorc@gmail.com>
parents: 40002
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177 return storageutil.filerevisioncopied(self, node)
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parents: 1089
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178
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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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parents: 2895
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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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parents: 2895
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184 if self.renamed(node):
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parents: 2895
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185 return len(self.read(node))
24118
76f6ae06ddf5 revlog: add "iscensored()" to revlog public API
Mike Edgar <adgar@google.com>
parents: 24117
diff changeset
186 if self.iscensored(rev):
22597
58ec36686f0e filelog: censored files compare against empty data, have 0 size
Mike Edgar <adgar@google.com>
parents: 22596
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187 return 0
2898
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188
11540
2370e270a29a filelog: test behaviour for data starting with "\1\n"
Nicolas Dumazet <nicdumz.commits@gmail.com>
parents: 11539
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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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diff changeset
191
2887
05257fd28591 filelog: add hash-based comparisons
Matt Mackall <mpm@selenic.com>
parents: 2859
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192 def cmp(self, node, text):
11539
a463e3c50212 cmp: document the fact that we return True if content is different
Nicolas Dumazet <nicdumz.commits@gmail.com>
parents: 10706
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193 """compare text with a given file revision
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parents: 10706
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194
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Nicolas Dumazet <nicdumz.commits@gmail.com>
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195 returns True if text is different than what is stored.
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Nicolas Dumazet <nicdumz.commits@gmail.com>
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196 """
40007
1470183068b8 storageutil: invert logic of file data comparison
Gregory Szorc <gregory.szorc@gmail.com>
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197 return not storageutil.filedataequivalent(self, node, text)
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198
39842
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Gregory Szorc <gregory.szorc@gmail.com>
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199 def verifyintegrity(self, state):
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Gregory Szorc <gregory.szorc@gmail.com>
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200 return self._revlog.verifyintegrity(state)
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parents: 39785
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201
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diff changeset
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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diff changeset
209 ):
39869
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diff changeset
210 return self._revlog.storageinfo(
43076
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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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parents: 42814
diff changeset
216 )
39869
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parents: 39867
diff changeset
217
39783
76f92d208f7a filelog: record what's using attributes
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diff changeset
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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parents: 39782
diff changeset
220
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parents: 39782
diff changeset
221 # Used by bundlefilelog, unionfilelog.
37497
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parents: 37443
diff changeset
222 @property
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Gregory Szorc <gregory.szorc@gmail.com>
parents: 37443
diff changeset
223 def indexfile(self):
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Gregory Szorc <gregory.szorc@gmail.com>
parents: 37443
diff changeset
224 return self._revlog.indexfile
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Gregory Szorc <gregory.szorc@gmail.com>
parents: 37443
diff changeset
225
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Gregory Szorc <gregory.szorc@gmail.com>
parents: 37443
diff changeset
226 @indexfile.setter
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Gregory Szorc <gregory.szorc@gmail.com>
parents: 37443
diff changeset
227 def indexfile(self, value):
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Gregory Szorc <gregory.szorc@gmail.com>
parents: 37443
diff changeset
228 self._revlog.indexfile = value
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229
39783
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parents: 39782
diff changeset
230 # Used by repo upgrade.
37497
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Gregory Szorc <gregory.szorc@gmail.com>
parents: 37443
diff changeset
231 def clone(self, tr, destrevlog, **kwargs):
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Gregory Szorc <gregory.szorc@gmail.com>
parents: 37443
diff changeset
232 if not isinstance(destrevlog, filelog):
43077
687b865b95ad formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents: 43076
diff changeset
233 raise error.ProgrammingError(b'expected filelog to clone()')
37497
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Gregory Szorc <gregory.szorc@gmail.com>
parents: 37443
diff changeset
234
1541e1a8e87d filelog: wrap revlog instead of inheriting it (API)
Gregory Szorc <gregory.szorc@gmail.com>
parents: 37443
diff changeset
235 return self._revlog.clone(tr, destrevlog._revlog, **kwargs)
1541e1a8e87d filelog: wrap revlog instead of inheriting it (API)
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parents: 37443
diff changeset
236
43076
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diff changeset
237
39765
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Gregory Szorc <gregory.szorc@gmail.com>
parents: 39283
diff changeset
238 class narrowfilelog(filelog):
3e801ffd7269 filelog: custom filelog to be used with narrow repos
Gregory Szorc <gregory.szorc@gmail.com>
parents: 39283
diff changeset
239 """Filelog variation to be used with narrow stores."""
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parents: 39283
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240
3e801ffd7269 filelog: custom filelog to be used with narrow repos
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parents: 39283
diff changeset
241 def __init__(self, opener, path, narrowmatch):
3e801ffd7269 filelog: custom filelog to be used with narrow repos
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parents: 39283
diff changeset
242 super(narrowfilelog, self).__init__(opener, path)
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parents: 39283
diff changeset
243 self._narrowmatch = narrowmatch
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parents: 39283
diff changeset
244
3e801ffd7269 filelog: custom filelog to be used with narrow repos
Gregory Szorc <gregory.szorc@gmail.com>
parents: 39283
diff changeset
245 def renamed(self, node):
3e801ffd7269 filelog: custom filelog to be used with narrow repos
Gregory Szorc <gregory.szorc@gmail.com>
parents: 39283
diff changeset
246 res = super(narrowfilelog, self).renamed(node)
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parents: 39283
diff changeset
247
3e801ffd7269 filelog: custom filelog to be used with narrow repos
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parents: 39283
diff changeset
248 # Renames that come from outside the narrowspec are problematic
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Gregory Szorc <gregory.szorc@gmail.com>
parents: 39283
diff changeset
249 # because we may lack the base text for the rename. This can result
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Gregory Szorc <gregory.szorc@gmail.com>
parents: 39283
diff changeset
250 # in code attempting to walk the ancestry or compute a diff
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Gregory Szorc <gregory.szorc@gmail.com>
parents: 39283
diff changeset
251 # encountering a missing revision. We address this by silently
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Gregory Szorc <gregory.szorc@gmail.com>
parents: 39283
diff changeset
252 # removing rename metadata if the source file is outside the
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Gregory Szorc <gregory.szorc@gmail.com>
parents: 39283
diff changeset
253 # narrow spec.
3e801ffd7269 filelog: custom filelog to be used with narrow repos
Gregory Szorc <gregory.szorc@gmail.com>
parents: 39283
diff changeset
254 #
3e801ffd7269 filelog: custom filelog to be used with narrow repos
Gregory Szorc <gregory.szorc@gmail.com>
parents: 39283
diff changeset
255 # A better solution would be to see if the base revision is available,
3e801ffd7269 filelog: custom filelog to be used with narrow repos
Gregory Szorc <gregory.szorc@gmail.com>
parents: 39283
diff changeset
256 # rather than assuming it isn't.
3e801ffd7269 filelog: custom filelog to be used with narrow repos
Gregory Szorc <gregory.szorc@gmail.com>
parents: 39283
diff changeset
257 #
3e801ffd7269 filelog: custom filelog to be used with narrow repos
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parents: 39283
diff changeset
258 # An even better solution would be to teach all consumers of rename
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Gregory Szorc <gregory.szorc@gmail.com>
parents: 39283
diff changeset
259 # metadata that the base revision may not be available.
3e801ffd7269 filelog: custom filelog to be used with narrow repos
Gregory Szorc <gregory.szorc@gmail.com>
parents: 39283
diff changeset
260 #
3e801ffd7269 filelog: custom filelog to be used with narrow repos
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parents: 39283
diff changeset
261 # TODO consider better ways of doing this.
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Gregory Szorc <gregory.szorc@gmail.com>
parents: 39283
diff changeset
262 if res and not self._narrowmatch(res[0]):
3e801ffd7269 filelog: custom filelog to be used with narrow repos
Gregory Szorc <gregory.szorc@gmail.com>
parents: 39283
diff changeset
263 return None
3e801ffd7269 filelog: custom filelog to be used with narrow repos
Gregory Szorc <gregory.szorc@gmail.com>
parents: 39283
diff changeset
264
3e801ffd7269 filelog: custom filelog to be used with narrow repos
Gregory Szorc <gregory.szorc@gmail.com>
parents: 39283
diff changeset
265 return res
3e801ffd7269 filelog: custom filelog to be used with narrow repos
Gregory Szorc <gregory.szorc@gmail.com>
parents: 39283
diff changeset
266
3e801ffd7269 filelog: custom filelog to be used with narrow repos
Gregory Szorc <gregory.szorc@gmail.com>
parents: 39283
diff changeset
267 def size(self, rev):
3e801ffd7269 filelog: custom filelog to be used with narrow repos
Gregory Szorc <gregory.szorc@gmail.com>
parents: 39283
diff changeset
268 # Because we have a custom renamed() that may lie, we need to call
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Gregory Szorc <gregory.szorc@gmail.com>
parents: 39283
diff changeset
269 # the base renamed() to report accurate results.
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Gregory Szorc <gregory.szorc@gmail.com>
parents: 39283
diff changeset
270 node = self.node(rev)
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Gregory Szorc <gregory.szorc@gmail.com>
parents: 39283
diff changeset
271 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
272 return len(self.read(node))
3e801ffd7269 filelog: custom filelog to be used with narrow repos
Gregory Szorc <gregory.szorc@gmail.com>
parents: 39283
diff changeset
273 else:
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Gregory Szorc <gregory.szorc@gmail.com>
parents: 39283
diff changeset
274 return super(narrowfilelog, self).size(rev)
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parents: 39283
diff changeset
275
3e801ffd7269 filelog: custom filelog to be used with narrow repos
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parents: 39283
diff changeset
276 def cmp(self, node, text):
3e801ffd7269 filelog: custom filelog to be used with narrow repos
Gregory Szorc <gregory.szorc@gmail.com>
parents: 39283
diff changeset
277 different = super(narrowfilelog, self).cmp(node, text)
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parents: 39283
diff changeset
278
3e801ffd7269 filelog: custom filelog to be used with narrow repos
Gregory Szorc <gregory.szorc@gmail.com>
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279 # Because renamed() may lie, we may get false positives for
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Gregory Szorc <gregory.szorc@gmail.com>
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280 # different content. Check for this by comparing against the original
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Gregory Szorc <gregory.szorc@gmail.com>
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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