Mercurial > hg
annotate mercurial/repoview.py @ 21707:e22cfd1ae97c stable
keyword: suppress keyword expansion while 'hg histedit' for internal merge
Before this patch, 'hg histedit' may cause unexpected conflict, if 'hg
histedit'-ed changes are located near lines in which keywords are
embedded, because keywords are substituted with other strings in the
working directory.
This patch suppresses keyword expansion while 'hg histedit' for
internal merge by adding 'histedit' to 'restricted' command list like
'merge'.
Test in this patch just swaps order of revision #13 and #14: this is
enough to cause internal merge.
author | FUJIWARA Katsunori <foozy@lares.dti.ne.jp> |
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date | Thu, 05 Jun 2014 16:47:14 +0900 |
parents | d7e233df48e6 |
children | e5dfa8689cf0 |
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1 # repoview.py - Filtered view of a localrepo object |
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2 # |
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3 # Copyright 2012 Pierre-Yves David <pierre-yves.david@ens-lyon.org> |
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4 # Logilab SA <contact@logilab.fr> |
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5 # |
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6 # This software may be used and distributed according to the terms of the |
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7 # GNU General Public License version 2 or any later version. |
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8 |
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9 import copy |
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10 import phases |
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11 import util |
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12 import obsolete |
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13 import tags as tagsmod |
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14 |
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15 |
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16 def hideablerevs(repo): |
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17 """Revisions candidates to be hidden |
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18 |
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19 This is a standalone function to help extensions to wrap it.""" |
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20 return obsolete.getrevs(repo, 'obsolete') |
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21 |
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22 def _gethiddenblockers(repo): |
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23 """Get revisions that will block hidden changesets from being filtered |
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24 |
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25 This is a standalone function to help extensions to wrap it.""" |
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26 assert not repo.changelog.filteredrevs |
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27 hideable = hideablerevs(repo) |
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28 blockers = [] |
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29 if hideable: |
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30 # We use cl to avoid recursive lookup from repo[xxx] |
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31 cl = repo.changelog |
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32 firsthideable = min(hideable) |
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33 revs = cl.revs(start=firsthideable) |
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34 tofilter = repo.revs( |
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35 '(%ld) and children(%ld)', list(revs), list(hideable)) |
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36 blockers = [r for r in tofilter if r not in hideable] |
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37 for par in repo[None].parents(): |
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38 blockers.append(par.rev()) |
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39 for bm in repo._bookmarks.values(): |
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40 blockers.append(cl.rev(bm)) |
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41 tags = {} |
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42 tagsmod.readlocaltags(repo.ui, repo, tags, {}) |
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43 if tags: |
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44 blockers.extend(cl.rev(t[0]) for t in tags.values()) |
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45 return blockers |
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46 |
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47 def computehidden(repo): |
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48 """compute the set of hidden revision to filter |
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49 |
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50 During most operation hidden should be filtered.""" |
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51 assert not repo.changelog.filteredrevs |
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52 hideable = hideablerevs(repo) |
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53 if hideable: |
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54 cl = repo.changelog |
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55 blocked = cl.ancestors(_gethiddenblockers(repo), inclusive=True) |
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56 return frozenset(r for r in hideable if r not in blocked) |
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57 return frozenset() |
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58 |
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59 def computeunserved(repo): |
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60 """compute the set of revision that should be filtered when used a server |
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61 |
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62 Secret and hidden changeset should not pretend to be here.""" |
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63 assert not repo.changelog.filteredrevs |
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64 # fast path in simple case to avoid impact of non optimised code |
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65 hiddens = filterrevs(repo, 'visible') |
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66 if phases.hassecret(repo): |
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67 cl = repo.changelog |
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68 secret = phases.secret |
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69 getphase = repo._phasecache.phase |
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70 first = min(cl.rev(n) for n in repo._phasecache.phaseroots[secret]) |
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71 revs = cl.revs(start=first) |
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72 secrets = set(r for r in revs if getphase(repo, r) >= secret) |
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73 return frozenset(hiddens | secrets) |
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74 else: |
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75 return hiddens |
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76 |
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77 def computemutable(repo): |
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78 """compute the set of revision that should be filtered when used a server |
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79 |
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80 Secret and hidden changeset should not pretend to be here.""" |
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81 assert not repo.changelog.filteredrevs |
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82 # fast check to avoid revset call on huge repo |
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83 if util.any(repo._phasecache.phaseroots[1:]): |
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84 getphase = repo._phasecache.phase |
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85 maymutable = filterrevs(repo, 'base') |
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86 return frozenset(r for r in maymutable if getphase(repo, r)) |
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87 return frozenset() |
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88 |
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89 def computeimpactable(repo): |
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90 """Everything impactable by mutable revision |
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91 |
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92 The immutable filter still have some chance to get invalidated. This will |
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93 happen when: |
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94 |
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95 - you garbage collect hidden changeset, |
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96 - public phase is moved backward, |
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97 - something is changed in the filtering (this could be fixed) |
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98 |
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99 This filter out any mutable changeset and any public changeset that may be |
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100 impacted by something happening to a mutable revision. |
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101 |
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102 This is achieved by filtered everything with a revision number egal or |
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103 higher than the first mutable changeset is filtered.""" |
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104 assert not repo.changelog.filteredrevs |
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105 cl = repo.changelog |
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106 firstmutable = len(cl) |
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107 for roots in repo._phasecache.phaseroots[1:]: |
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108 if roots: |
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109 firstmutable = min(firstmutable, min(cl.rev(r) for r in roots)) |
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110 # protect from nullrev root |
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111 firstmutable = max(0, firstmutable) |
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112 return frozenset(xrange(firstmutable, len(cl))) |
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113 |
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114 # function to compute filtered set |
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115 # |
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116 # When adding a new filter you MUST update the table at: |
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117 # mercurial.branchmap.subsettable |
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118 # Otherwise your filter will have to recompute all its branches cache |
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119 # from scratch (very slow). |
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120 filtertable = {'visible': computehidden, |
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121 'served': computeunserved, |
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122 'immutable': computemutable, |
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123 'base': computeimpactable} |
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124 |
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125 def filterrevs(repo, filtername): |
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126 """returns set of filtered revision for this filter name""" |
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127 if filtername not in repo.filteredrevcache: |
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128 func = filtertable[filtername] |
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129 repo.filteredrevcache[filtername] = func(repo.unfiltered()) |
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130 return repo.filteredrevcache[filtername] |
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131 |
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132 class repoview(object): |
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133 """Provide a read/write view of a repo through a filtered changelog |
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134 |
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135 This object is used to access a filtered version of a repository without |
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136 altering the original repository object itself. We can not alter the |
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137 original object for two main reasons: |
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138 - It prevents the use of a repo with multiple filters at the same time. In |
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139 particular when multiple threads are involved. |
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140 - It makes scope of the filtering harder to control. |
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141 |
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142 This object behaves very closely to the original repository. All attribute |
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143 operations are done on the original repository: |
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144 - An access to `repoview.someattr` actually returns `repo.someattr`, |
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145 - A write to `repoview.someattr` actually sets value of `repo.someattr`, |
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146 - A deletion of `repoview.someattr` actually drops `someattr` |
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147 from `repo.__dict__`. |
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148 |
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149 The only exception is the `changelog` property. It is overridden to return |
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150 a (surface) copy of `repo.changelog` with some revisions filtered. The |
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151 `filtername` attribute of the view control the revisions that need to be |
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152 filtered. (the fact the changelog is copied is an implementation detail). |
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153 |
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154 Unlike attributes, this object intercepts all method calls. This means that |
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155 all methods are run on the `repoview` object with the filtered `changelog` |
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156 property. For this purpose the simple `repoview` class must be mixed with |
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157 the actual class of the repository. This ensures that the resulting |
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158 `repoview` object have the very same methods than the repo object. This |
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159 leads to the property below. |
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160 |
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161 repoview.method() --> repo.__class__.method(repoview) |
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162 |
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163 The inheritance has to be done dynamically because `repo` can be of any |
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164 subclasses of `localrepo`. Eg: `bundlerepo` or `statichttprepo`. |
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165 """ |
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166 |
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167 def __init__(self, repo, filtername): |
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168 object.__setattr__(self, '_unfilteredrepo', repo) |
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169 object.__setattr__(self, 'filtername', filtername) |
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170 object.__setattr__(self, '_clcachekey', None) |
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171 object.__setattr__(self, '_clcache', None) |
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172 |
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173 # not a propertycache on purpose we shall implement a proper cache later |
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174 @property |
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175 def changelog(self): |
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176 """return a filtered version of the changeset |
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177 |
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178 this changelog must not be used for writing""" |
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179 # some cache may be implemented later |
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180 unfi = self._unfilteredrepo |
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181 unfichangelog = unfi.changelog |
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182 revs = filterrevs(unfi, self.filtername) |
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183 cl = self._clcache |
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184 newkey = (len(unfichangelog), unfichangelog.tip(), hash(revs)) |
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185 if cl is not None: |
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186 # we need to check curkey too for some obscure reason. |
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187 # MQ test show a corruption of the underlying repo (in _clcache) |
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188 # without change in the cachekey. |
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189 oldfilter = cl.filteredrevs |
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190 try: |
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191 cl.filterrevs = () # disable filtering for tip |
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192 curkey = (len(cl), cl.tip(), hash(oldfilter)) |
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193 finally: |
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194 cl.filteredrevs = oldfilter |
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195 if newkey != self._clcachekey or newkey != curkey: |
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196 cl = None |
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197 # could have been made None by the previous if |
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198 if cl is None: |
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199 cl = copy.copy(unfichangelog) |
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200 cl.filteredrevs = revs |
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201 object.__setattr__(self, '_clcache', cl) |
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202 object.__setattr__(self, '_clcachekey', newkey) |
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203 return cl |
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204 |
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205 def unfiltered(self): |
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206 """Return an unfiltered version of a repo""" |
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207 return self._unfilteredrepo |
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208 |
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209 def filtered(self, name): |
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210 """Return a filtered version of a repository""" |
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211 if name == self.filtername: |
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212 return self |
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213 return self.unfiltered().filtered(name) |
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214 |
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215 # everything access are forwarded to the proxied repo |
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216 def __getattr__(self, attr): |
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217 return getattr(self._unfilteredrepo, attr) |
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218 |
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219 def __setattr__(self, attr, value): |
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220 return setattr(self._unfilteredrepo, attr, value) |
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221 |
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222 def __delattr__(self, attr): |
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223 return delattr(self._unfilteredrepo, attr) |
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224 |
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225 # The `requirements` attribute is initialized during __init__. But |
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226 # __getattr__ won't be called as it also exists on the class. We need |
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227 # explicit forwarding to main repo here |
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228 @property |
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229 def requirements(self): |
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230 return self._unfilteredrepo.requirements |