Mercurial > hg
annotate mercurial/bundlerepo.py @ 19093:6f27efc7db23 stable
hgweb: fix empty navigation detection
For some obscure reason, changelog.node(0) returns nullid if changelog is empty.
this break empty navigation detection. We fix this code by using the length of
the changelog.
Using the length have some issue with revision filtering but this is a small
step in the right direction. Proper fix comes in later changeset.
author | Pierre-Yves David <pierre-yves.david@logilab.fr> |
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date | Tue, 30 Apr 2013 15:11:12 +0200 |
parents | f0564402d059 |
children | 81241f978fd2 |
rev | line source |
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1 # bundlerepo.py - repository class for viewing uncompressed bundles |
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2 # |
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3 # Copyright 2006, 2007 Benoit Boissinot <bboissin@gmail.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 """Repository class for viewing uncompressed bundles. |
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9 |
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10 This provides a read-only repository interface to bundles as if they |
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11 were part of the actual repository. |
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12 """ |
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13 |
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14 from node import nullid |
3891 | 15 from i18n import _ |
14158 | 16 import os, tempfile, shutil |
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17 import changegroup, util, mdiff, discovery, cmdutil, scmutil |
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18 import localrepo, changelog, manifest, filelog, revlog, error |
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19 |
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20 class bundlerevlog(revlog.revlog): |
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21 def __init__(self, opener, indexfile, bundle, linkmapper): |
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22 # How it works: |
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23 # To retrieve a revision, we need to know the offset of the revision in |
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24 # the bundle (an unbundle object). We store this offset in the index |
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25 # (start). The base of the delta is stored in the base field. |
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26 # |
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27 # To differentiate a rev in the bundle from a rev in the revlog, we |
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28 # check revision against repotiprev. |
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29 opener = scmutil.readonlyvfs(opener) |
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30 revlog.revlog.__init__(self, opener, indexfile) |
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31 self.bundle = bundle |
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32 n = len(self) |
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33 self.repotiprev = n - 1 |
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34 chain = None |
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35 self.bundlerevs = set() # used by 'bundle()' revset expression |
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36 while True: |
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37 chunkdata = bundle.deltachunk(chain) |
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38 if not chunkdata: |
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39 break |
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40 node = chunkdata['node'] |
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41 p1 = chunkdata['p1'] |
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42 p2 = chunkdata['p2'] |
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43 cs = chunkdata['cs'] |
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44 deltabase = chunkdata['deltabase'] |
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45 delta = chunkdata['delta'] |
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46 |
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47 size = len(delta) |
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48 start = bundle.tell() - size |
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49 |
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50 link = linkmapper(cs) |
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51 if node in self.nodemap: |
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52 # this can happen if two branches make the same change |
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53 chain = node |
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54 self.bundlerevs.add(self.nodemap[node]) |
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55 continue |
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56 |
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57 for p in (p1, p2): |
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58 if p not in self.nodemap: |
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59 raise error.LookupError(p, self.indexfile, |
7633 | 60 _("unknown parent")) |
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61 |
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62 if deltabase not in self.nodemap: |
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63 raise LookupError(deltabase, self.indexfile, |
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64 _('unknown delta base')) |
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65 |
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66 baserev = self.rev(deltabase) |
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67 # start, size, full unc. size, base (unused), link, p1, p2, node |
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68 e = (revlog.offset_type(start, 0), size, -1, baserev, link, |
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69 self.rev(p1), self.rev(p2), node) |
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70 self.index.insert(-1, e) |
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71 self.nodemap[node] = n |
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72 self.bundlerevs.add(n) |
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73 chain = node |
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74 n += 1 |
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75 |
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76 def _chunk(self, rev): |
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77 # Warning: in case of bundle, the diff is against what we stored as |
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78 # delta base, not against rev - 1 |
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79 # XXX: could use some caching |
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80 if rev <= self.repotiprev: |
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81 return revlog.revlog._chunk(self, rev) |
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82 self.bundle.seek(self.start(rev)) |
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83 return self.bundle.read(self.length(rev)) |
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84 |
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85 def revdiff(self, rev1, rev2): |
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86 """return or calculate a delta between two revisions""" |
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87 if rev1 > self.repotiprev and rev2 > self.repotiprev: |
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88 # hot path for bundle |
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89 revb = self.index[rev2][3] |
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90 if revb == rev1: |
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91 return self._chunk(rev2) |
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92 elif rev1 <= self.repotiprev and rev2 <= self.repotiprev: |
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93 return revlog.revlog.revdiff(self, rev1, rev2) |
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94 |
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95 return mdiff.textdiff(self.revision(self.node(rev1)), |
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96 self.revision(self.node(rev2))) |
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97 |
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98 def revision(self, nodeorrev): |
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99 """return an uncompressed revision of a given node or revision |
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100 number. |
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101 """ |
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102 if isinstance(nodeorrev, int): |
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103 rev = nodeorrev |
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104 node = self.node(rev) |
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105 else: |
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106 node = nodeorrev |
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107 rev = self.rev(node) |
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108 |
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109 if node == nullid: |
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110 return "" |
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111 |
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112 text = None |
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113 chain = [] |
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114 iterrev = rev |
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115 # reconstruct the revision if it is from a changegroup |
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116 while iterrev > self.repotiprev: |
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117 if self._cache and self._cache[1] == iterrev: |
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119 break |
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120 chain.append(iterrev) |
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121 iterrev = self.index[iterrev][3] |
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122 if text is None: |
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123 text = revlog.revlog.revision(self, iterrev) |
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124 |
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125 while chain: |
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126 delta = self._chunk(chain.pop()) |
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127 text = mdiff.patches(text, [delta]) |
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128 |
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129 self._checkhash(text, node, rev) |
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130 self._cache = (node, rev, text) |
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131 return text |
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132 |
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133 def addrevision(self, text, transaction, link, p1=None, p2=None, d=None): |
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134 raise NotImplementedError |
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135 def addgroup(self, revs, linkmapper, transaction): |
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136 raise NotImplementedError |
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137 def strip(self, rev, minlink): |
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138 raise NotImplementedError |
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139 def checksize(self): |
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140 raise NotImplementedError |
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141 |
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142 class bundlechangelog(bundlerevlog, changelog.changelog): |
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143 def __init__(self, opener, bundle): |
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144 changelog.changelog.__init__(self, opener) |
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145 linkmapper = lambda x: x |
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146 bundlerevlog.__init__(self, opener, self.indexfile, bundle, |
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147 linkmapper) |
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148 |
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149 class bundlemanifest(bundlerevlog, manifest.manifest): |
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150 def __init__(self, opener, bundle, linkmapper): |
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151 manifest.manifest.__init__(self, opener) |
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152 bundlerevlog.__init__(self, opener, self.indexfile, bundle, |
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153 linkmapper) |
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154 |
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155 class bundlefilelog(bundlerevlog, filelog.filelog): |
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156 def __init__(self, opener, path, bundle, linkmapper, repo): |
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157 filelog.filelog.__init__(self, opener, path) |
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158 bundlerevlog.__init__(self, opener, self.indexfile, bundle, |
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159 linkmapper) |
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160 self._repo = repo |
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161 |
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162 def _file(self, f): |
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163 self._repo.file(f) |
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164 |
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165 class bundlepeer(localrepo.localpeer): |
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166 def canpush(self): |
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167 return False |
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168 |
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169 class bundlerepository(localrepo.localrepository): |
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170 def __init__(self, ui, path, bundlename): |
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171 self._tempparent = None |
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172 try: |
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173 localrepo.localrepository.__init__(self, ui, path) |
7637 | 174 except error.RepoError: |
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175 self._tempparent = tempfile.mkdtemp() |
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176 localrepo.instance(ui, self._tempparent, 1) |
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177 localrepo.localrepository.__init__(self, ui, self._tempparent) |
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178 self.ui.setconfig('phases', 'publish', False) |
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179 |
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180 if path: |
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181 self._url = 'bundle:' + util.expandpath(path) + '+' + bundlename |
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182 else: |
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183 self._url = 'bundle:' + bundlename |
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184 |
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185 self.tempfile = None |
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186 f = util.posixfile(bundlename, "rb") |
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187 self.bundle = changegroup.readbundle(f, bundlename) |
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188 if self.bundle.compressed(): |
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189 fdtemp, temp = tempfile.mkstemp(prefix="hg-bundle-", |
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190 suffix=".hg10un", dir=self.path) |
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191 self.tempfile = temp |
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192 fptemp = os.fdopen(fdtemp, 'wb') |
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193 |
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194 try: |
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195 fptemp.write("HG10UN") |
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196 while True: |
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197 chunk = self.bundle.read(2**18) |
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198 if not chunk: |
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199 break |
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200 fptemp.write(chunk) |
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201 finally: |
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202 fptemp.close() |
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203 |
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204 f = util.posixfile(self.tempfile, "rb") |
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205 self.bundle = changegroup.readbundle(f, bundlename) |
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206 |
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207 # dict with the mapping 'filename' -> position in the bundle |
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208 self.bundlefilespos = {} |
5262 | 209 |
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210 @localrepo.unfilteredpropertycache |
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211 def changelog(self): |
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212 # consume the header if it exists |
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213 self.bundle.changelogheader() |
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214 c = bundlechangelog(self.sopener, self.bundle) |
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215 self.manstart = self.bundle.tell() |
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216 return c |
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217 |
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218 @localrepo.unfilteredpropertycache |
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219 def manifest(self): |
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220 self.bundle.seek(self.manstart) |
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221 # consume the header if it exists |
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222 self.bundle.manifestheader() |
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223 m = bundlemanifest(self.sopener, self.bundle, self.changelog.rev) |
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224 self.filestart = self.bundle.tell() |
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225 return m |
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226 |
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227 @localrepo.unfilteredpropertycache |
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228 def manstart(self): |
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229 self.changelog |
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230 return self.manstart |
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231 |
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232 @localrepo.unfilteredpropertycache |
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233 def filestart(self): |
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234 self.manifest |
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235 return self.filestart |
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236 |
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237 def url(self): |
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238 return self._url |
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239 |
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240 def file(self, f): |
5262 | 241 if not self.bundlefilespos: |
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242 self.bundle.seek(self.filestart) |
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243 while True: |
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244 chunkdata = self.bundle.filelogheader() |
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245 if not chunkdata: |
5262 | 246 break |
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247 fname = chunkdata['filename'] |
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248 self.bundlefilespos[fname] = self.bundle.tell() |
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249 while True: |
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250 c = self.bundle.deltachunk(None) |
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251 if not c: |
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252 break |
5262 | 253 |
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254 if f in self.bundlefilespos: |
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255 self.bundle.seek(self.bundlefilespos[f]) |
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256 return bundlefilelog(self.sopener, f, self.bundle, |
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257 self.changelog.rev, self) |
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258 else: |
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259 return filelog.filelog(self.sopener, f) |
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260 |
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261 def close(self): |
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262 """Close assigned bundle file immediately.""" |
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263 self.bundle.close() |
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264 if self.tempfile is not None: |
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265 os.unlink(self.tempfile) |
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266 if self._tempparent: |
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267 shutil.rmtree(self._tempparent, True) |
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268 |
6315 | 269 def cancopy(self): |
270 return False | |
271 | |
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272 def peer(self): |
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273 return bundlepeer(self) |
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274 |
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275 def getcwd(self): |
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276 return os.getcwd() # always outside the repo |
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277 |
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278 |
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279 def instance(ui, path, create): |
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280 if create: |
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281 raise util.Abort(_('cannot create new bundle repository')) |
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282 parentpath = ui.config("bundle", "mainreporoot", "") |
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283 if not parentpath: |
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284 # try to find the correct path to the working directory repo |
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285 parentpath = cmdutil.findrepo(os.getcwd()) |
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286 if parentpath is None: |
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287 parentpath = '' |
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288 if parentpath: |
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289 # Try to make the full path relative so we get a nice, short URL. |
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290 # In particular, we don't want temp dir names in test outputs. |
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291 cwd = os.getcwd() |
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292 if parentpath == cwd: |
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293 parentpath = '' |
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294 else: |
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295 cwd = os.path.join(cwd,'') |
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296 if parentpath.startswith(cwd): |
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297 parentpath = parentpath[len(cwd):] |
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298 u = util.url(path) |
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299 path = u.localpath() |
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300 if u.scheme == 'bundle': |
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301 s = path.split("+", 1) |
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302 if len(s) == 1: |
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303 repopath, bundlename = parentpath, s[0] |
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304 else: |
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305 repopath, bundlename = s |
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306 else: |
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307 repopath, bundlename = parentpath, path |
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308 return bundlerepository(ui, repopath, bundlename) |
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309 |
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310 def getremotechanges(ui, repo, other, onlyheads=None, bundlename=None, |
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311 force=False): |
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312 '''obtains a bundle of changes incoming from other |
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313 |
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314 "onlyheads" restricts the returned changes to those reachable from the |
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315 specified heads. |
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316 "bundlename", if given, stores the bundle to this file path permanently; |
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317 otherwise it's stored to a temp file and gets deleted again when you call |
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318 the returned "cleanupfn". |
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319 "force" indicates whether to proceed on unrelated repos. |
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320 |
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321 Returns a tuple (local, csets, cleanupfn): |
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322 |
16683 | 323 "local" is a local repo from which to obtain the actual incoming |
324 changesets; it is a bundlerepo for the obtained bundle when the | |
325 original "other" is remote. | |
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326 "csets" lists the incoming changeset node ids. |
16683 | 327 "cleanupfn" must be called without arguments when you're done processing |
328 the changes; it closes both the original "other" and the one returned | |
329 here. | |
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330 ''' |
16683 | 331 tmp = discovery.findcommonincoming(repo, other, heads=onlyheads, |
332 force=force) | |
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333 common, incoming, rheads = tmp |
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334 if not incoming: |
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335 try: |
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336 if bundlename: |
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337 os.unlink(bundlename) |
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338 except OSError: |
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339 pass |
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340 return repo, [], other.close |
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341 |
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342 bundle = None |
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343 bundlerepo = None |
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344 localrepo = other.local() |
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345 if bundlename or not localrepo: |
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346 # create a bundle (uncompressed if other repo is not local) |
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347 |
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348 if other.capable('getbundle'): |
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349 cg = other.getbundle('incoming', common=common, heads=rheads) |
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350 elif onlyheads is None and not other.capable('changegroupsubset'): |
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351 # compat with older servers when pulling all remote heads |
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352 cg = other.changegroup(incoming, "incoming") |
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353 rheads = None |
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354 else: |
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355 cg = other.changegroupsubset(incoming, rheads, 'incoming') |
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356 bundletype = localrepo and "HG10BZ" or "HG10UN" |
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357 fname = bundle = changegroup.writebundle(cg, bundlename, bundletype) |
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358 # keep written bundle? |
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359 if bundlename: |
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360 bundle = None |
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361 if not localrepo: |
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362 # use the created uncompressed bundlerepo |
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363 localrepo = bundlerepo = bundlerepository(repo.baseui, repo.root, |
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364 fname) |
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365 # this repo contains local and other now, so filter out local again |
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366 common = repo.heads() |
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367 if localrepo: |
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368 # Part of common may be remotely filtered |
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369 # So use an unfiltered version |
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370 # The discovery process probably need cleanup to avoid that |
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371 localrepo = localrepo.unfiltered() |
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372 |
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373 csets = localrepo.changelog.findmissing(common, rheads) |
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374 |
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375 def cleanup(): |
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376 if bundlerepo: |
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377 bundlerepo.close() |
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378 if bundle: |
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379 os.unlink(bundle) |
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380 other.close() |
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381 |
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382 return (localrepo, csets, cleanup) |