Mercurial > hg
annotate mercurial/repair.py @ 10492:0e64d814d7d0 stable
run commit and update hooks after command completion (issue1827)
Previously, the working dir state hadn't been written when these
hooks were invoked, so external commands couldn't see all changes.
author | Sune Foldager <cryo@cyanite.org> |
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date | Wed, 17 Feb 2010 15:43:21 +0100 |
parents | 25e572394f5c |
children | a685011ed38e |
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1 # repair.py - functions for repository repair for mercurial |
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2 # |
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3 # Copyright 2005, 2006 Chris Mason <mason@suse.com> |
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4 # Copyright 2007 Matt Mackall |
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5 # |
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6 # This software may be used and distributed according to the terms of the |
10263 | 7 # GNU General Public License version 2 or any later version. |
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8 |
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9 import changegroup |
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10 from node import nullrev, short |
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11 from i18n import _ |
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12 import os |
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13 |
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14 def _bundle(repo, bases, heads, node, suffix, extranodes=None): |
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15 """create a bundle with the specified revisions as a backup""" |
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16 cg = repo.changegroupsubset(bases, heads, 'strip', extranodes) |
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17 backupdir = repo.join("strip-backup") |
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18 if not os.path.isdir(backupdir): |
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19 os.mkdir(backupdir) |
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20 name = os.path.join(backupdir, "%s-%s" % (short(node), suffix)) |
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21 repo.ui.warn(_("saving bundle to %s\n") % name) |
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22 return changegroup.writebundle(cg, name, "HG10BZ") |
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23 |
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24 def _collectfiles(repo, striprev): |
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25 """find out the filelogs affected by the strip""" |
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26 files = set() |
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27 |
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28 for x in xrange(striprev, len(repo)): |
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29 files.update(repo[x].files()) |
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30 |
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31 return sorted(files) |
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32 |
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33 def _collectextranodes(repo, files, link): |
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34 """return the nodes that have to be saved before the strip""" |
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35 def collectone(revlog): |
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36 extra = [] |
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37 startrev = count = len(revlog) |
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38 # find the truncation point of the revlog |
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39 for i in xrange(count): |
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40 lrev = revlog.linkrev(i) |
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41 if lrev >= link: |
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42 startrev = i + 1 |
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43 break |
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44 |
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45 # see if any revision after that point has a linkrev less than link |
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46 # (we have to manually save these guys) |
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47 for i in xrange(startrev, count): |
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48 node = revlog.node(i) |
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49 lrev = revlog.linkrev(i) |
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50 if lrev < link: |
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51 extra.append((node, cl.node(lrev))) |
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52 |
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53 return extra |
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54 |
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55 extranodes = {} |
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56 cl = repo.changelog |
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57 extra = collectone(repo.manifest) |
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58 if extra: |
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59 extranodes[1] = extra |
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60 for fname in files: |
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61 f = repo.file(fname) |
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62 extra = collectone(f) |
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63 if extra: |
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64 extranodes[fname] = extra |
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65 |
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66 return extranodes |
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67 |
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68 def strip(ui, repo, node, backup="all"): |
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69 cl = repo.changelog |
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70 # TODO delete the undo files, and handle undo of merge sets |
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71 striprev = cl.rev(node) |
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72 |
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73 # Some revisions with rev > striprev may not be descendants of striprev. |
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74 # We have to find these revisions and put them in a bundle, so that |
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75 # we can restore them after the truncations. |
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76 # To create the bundle we use repo.changegroupsubset which requires |
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77 # the list of heads and bases of the set of interesting revisions. |
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78 # (head = revision in the set that has no descendant in the set; |
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79 # base = revision in the set that has no ancestor in the set) |
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80 tostrip = set((striprev,)) |
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81 saveheads = set() |
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82 savebases = [] |
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83 for r in xrange(striprev + 1, len(cl)): |
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84 parents = cl.parentrevs(r) |
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85 if parents[0] in tostrip or parents[1] in tostrip: |
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86 # r is a descendant of striprev |
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87 tostrip.add(r) |
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88 # if this is a merge and one of the parents does not descend |
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89 # from striprev, mark that parent as a savehead. |
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90 if parents[1] != nullrev: |
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91 for p in parents: |
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92 if p not in tostrip and p > striprev: |
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93 saveheads.add(p) |
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94 else: |
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95 # if no parents of this revision will be stripped, mark it as |
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96 # a savebase |
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97 if parents[0] < striprev and parents[1] < striprev: |
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98 savebases.append(cl.node(r)) |
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99 |
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100 saveheads.difference_update(parents) |
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101 saveheads.add(r) |
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102 |
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103 saveheads = [cl.node(r) for r in saveheads] |
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104 files = _collectfiles(repo, striprev) |
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105 |
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106 extranodes = _collectextranodes(repo, files, striprev) |
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107 |
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108 # create a changegroup for all the branches we need to keep |
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109 if backup == "all": |
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110 _bundle(repo, [node], cl.heads(), node, 'backup') |
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111 if saveheads or extranodes: |
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112 chgrpfile = _bundle(repo, savebases, saveheads, node, 'temp', |
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113 extranodes) |
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114 |
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115 mfst = repo.manifest |
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116 |
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117 tr = repo.transaction() |
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118 offset = len(tr.entries) |
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119 |
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120 tr.startgroup() |
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121 cl.strip(striprev, tr) |
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122 mfst.strip(striprev, tr) |
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123 for fn in files: |
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124 repo.file(fn).strip(striprev, tr) |
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125 tr.endgroup() |
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126 |
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127 try: |
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128 for i in xrange(offset, len(tr.entries)): |
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129 file, troffset, ignore = tr.entries[i] |
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130 repo.sopener(file, 'a').truncate(troffset) |
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131 tr.close() |
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132 except: |
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133 tr.abort() |
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134 raise |
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135 |
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136 if saveheads or extranodes: |
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137 ui.status(_("adding branch\n")) |
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138 f = open(chgrpfile, "rb") |
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139 gen = changegroup.readbundle(f, chgrpfile) |
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140 repo.addchangegroup(gen, 'strip', 'bundle:' + chgrpfile, True) |
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141 f.close() |
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142 if backup != "strip": |
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143 os.unlink(chgrpfile) |
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144 |
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145 repo.destroyed() |