Mercurial > hg
annotate mercurial/repair.py @ 16719:e7bf09acd410
localrepo: add branchtip() method for faster single-branch lookups
For the PyPy repo with 744 branches and 843 branch heads, this brings
hg log -r default over NFS from:
CallCount Recursive Total(ms) Inline(ms) module:lineno(function)
3249 0 1.3222 1.3222 <open>
3244 0 0.6211 0.6211 <method 'close' of 'file' objects>
3243 0 0.0800 0.0800 <method 'read' of 'file' objects>
3241 0 0.0660 0.0660 <method 'seek' of 'file' objects>
3905 0 0.0476 0.0476 <zlib.decompress>
3281 0 2.6756 0.0472 mercurial.changelog:182(read)
+3281 0 2.5256 0.0453 +mercurial.revlog:881(revision)
+3276 0 0.0389 0.0196 +mercurial.changelog:28(decodeextra)
+6562 0 0.0123 0.0123 +<method 'split' of 'str' objects>
+6562 0 0.0408 0.0073 +mercurial.encoding:61(tolocal)
+3281 0 0.0054 0.0054 +<method 'index' of 'str' objects>
3241 0 2.2464 0.0456 mercurial.revlog:818(_loadchunk)
+3241 0 0.6205 0.6205 +<method 'close' of 'file' objects>
+3241 0 0.0765 0.0765 +<method 'read' of 'file' objects>
+3241 0 0.0660 0.0660 +<method 'seek' of 'file' objects>
+3241 0 1.4209 0.0135 +mercurial.store:374(__call__)
+3241 0 0.0122 0.0107 +mercurial.revlog:810(_addchunk)
3281 0 2.5256 0.0453 mercurial.revlog:881(revision)
+3280 0 0.0175 0.0175 +mercurial.revlog:305(rev)
+3281 0 2.2819 0.0119 +mercurial.revlog:847(_chunkraw)
+3281 0 0.0603 0.0083 +mercurial.revlog:945(_checkhash)
+3281 0 0.0051 0.0051 +mercurial.revlog:349(flags)
+3281 0 0.0040 0.0040 +<mercurial.mpatch.patches>
13682 0 0.0479 0.0248 <method 'decode' of 'str' objects>
+7418 0 0.0228 0.0076 +encodings.utf_8:15(decode)
+1 0 0.0003 0.0000 +encodings:71(search_function)
3248 0 1.3995 0.0246 mercurial.scmutil:218(__call__)
+3248 0 1.3222 1.3222 +<open>
+3248 0 0.0235 0.0184 +os.path:80(split)
+3248 0 0.0084 0.0068 +mercurial.scmutil:92(__call__)
Time: real 2.750 secs (user 0.680+0.000 sys 0.360+0.000)
down to:
CallCount Recursive Total(ms) Inline(ms) module:lineno(function)
55 31 0.0197 0.0163 <__import__>
+1 0 0.0006 0.0002 +mercurial.context:8(<module>)
+1 0 0.0042 0.0001 +mercurial.revlog:12(<module>)
+1 0 0.0002 0.0001 +mercurial.match:8(<module>)
+1 0 0.0003 0.0001 +mercurial.dirstate:7(<module>)
+1 0 0.0057 0.0001 +mercurial.changelog:8(<module>)
1 0 0.0117 0.0032 mercurial.localrepo:525(_readbranchcache)
+844 0 0.0015 0.0015 +<binascii.unhexlify>
+845 0 0.0010 0.0010 +<method 'split' of 'str' objects>
+843 0 0.0045 0.0009 +mercurial.encoding:61(tolocal)
+843 0 0.0004 0.0004 +<method 'setdefault' of 'dict' objects>
+1 0 0.0003 0.0003 +<method 'close' of 'file' objects>
3 0 0.0029 0.0029 <method 'read' of 'file' objects>
9 0 0.0018 0.0018 <open>
990 0 0.0017 0.0017 <binascii.unhexlify>
53 0 0.0016 0.0016 mercurial.demandimport:43(__init__)
862 0 0.0015 0.0015 <_codecs.utf_8_decode>
862 0 0.0037 0.0014 <method 'decode' of 'str' objects>
+862 0 0.0023 0.0008 +encodings.utf_8:15(decode)
981 0 0.0011 0.0011 <method 'split' of 'str' objects>
861 0 0.0046 0.0009 mercurial.encoding:61(tolocal)
+861 0 0.0037 0.0014 +<method 'decode' of 'str' objects>
862 0 0.0023 0.0008 encodings.utf_8:15(decode)
+862 0 0.0015 0.0015 +<_codecs.utf_8_decode>
4 0 0.0008 0.0008 <method 'close' of 'file' objects>
179 154 0.0202 0.0004 mercurial.demandimport:83(__getattribute__)
+36 11 0.0199 0.0003 +mercurial.demandimport:55(_load)
+72 0 0.0001 0.0001 +mercurial.demandimport:83(__getattribute__)
+36 0 0.0000 0.0000 +<getattr>
1 0 0.0015 0.0004 mercurial.tags:148(_readtagcache)
Time: real 0.060 secs (user 0.030+0.000 sys 0.010+0.000)
author | Brodie Rao <brodie@sf.io> |
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date | Sun, 13 May 2012 14:04:04 +0200 |
parents | 0311a6abd38a |
children | 27b2e1823e83 |
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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 from mercurial import changegroup, bookmarks |
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10 from mercurial.node import short |
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11 from mercurial.i18n import _ |
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12 import os |
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13 import errno |
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14 |
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15 def _bundle(repo, bases, heads, node, suffix, compress=True): |
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16 """create a bundle with the specified revisions as a backup""" |
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17 cg = repo.changegroupsubset(bases, heads, 'strip') |
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18 backupdir = repo.join("strip-backup") |
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19 if not os.path.isdir(backupdir): |
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20 os.mkdir(backupdir) |
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21 name = os.path.join(backupdir, "%s-%s.hg" % (short(node), suffix)) |
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22 if compress: |
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23 bundletype = "HG10BZ" |
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24 else: |
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25 bundletype = "HG10UN" |
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26 return changegroup.writebundle(cg, name, bundletype) |
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27 |
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28 def _collectfiles(repo, striprev): |
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29 """find out the filelogs affected by the strip""" |
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30 files = set() |
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31 |
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32 for x in xrange(striprev, len(repo)): |
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33 files.update(repo[x].files()) |
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34 |
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35 return sorted(files) |
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36 |
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37 def _collectbrokencsets(repo, files, striprev): |
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38 """return the changesets which will be broken by the truncation""" |
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39 s = set() |
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40 def collectone(revlog): |
16628 | 41 linkgen = (revlog.linkrev(i) for i in revlog) |
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42 # find the truncation point of the revlog |
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44 if lrev >= striprev: |
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45 break |
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46 # see if any revision after this point has a linkrev |
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47 # less than striprev (those will be broken by strip) |
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49 if lrev < striprev: |
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50 s.add(lrev) |
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51 |
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52 collectone(repo.manifest) |
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53 for fname in files: |
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54 collectone(repo.file(fname)) |
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55 |
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56 return s |
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57 |
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58 def strip(ui, repo, nodelist, backup="all", topic='backup'): |
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59 # It simplifies the logic around updating the branchheads cache if we only |
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60 # have to consider the effect of the stripped revisions and not revisions |
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61 # missing because the cache is out-of-date. |
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62 repo.updatebranchcache() |
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63 |
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64 cl = repo.changelog |
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65 # TODO handle undo of merge sets |
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66 if isinstance(nodelist, str): |
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67 nodelist = [nodelist] |
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68 striplist = [cl.rev(node) for node in nodelist] |
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69 striprev = min(striplist) |
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70 |
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71 # Set of potential new heads resulting from the strip. The parents of any |
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72 # node removed could be a new head because the node to be removed could have |
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73 # been the only child of the parent. |
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74 # Do a list->set->list conversion to remove duplicates. |
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75 stringstriplist = [str(rev) for rev in striplist] |
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76 newheadrevs = set(repo.revs("parents(%lr::) - %lr::", stringstriplist, |
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77 stringstriplist)) |
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78 |
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79 keeppartialbundle = backup == 'strip' |
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80 |
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81 # Some revisions with rev > striprev may not be descendants of striprev. |
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82 # We have to find these revisions and put them in a bundle, so that |
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83 # we can restore them after the truncations. |
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84 # To create the bundle we use repo.changegroupsubset which requires |
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85 # the list of heads and bases of the set of interesting revisions. |
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86 # (head = revision in the set that has no descendant in the set; |
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87 # base = revision in the set that has no ancestor in the set) |
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88 tostrip = set(striplist) |
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89 for rev in striplist: |
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90 for desc in cl.descendants(rev): |
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91 tostrip.add(desc) |
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92 |
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93 files = _collectfiles(repo, striprev) |
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94 saverevs = _collectbrokencsets(repo, files, striprev) |
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95 |
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96 # compute heads |
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97 saveheads = set(saverevs) |
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98 for r in xrange(striprev + 1, len(cl)): |
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99 if r not in tostrip: |
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100 saverevs.add(r) |
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101 saveheads.difference_update(cl.parentrevs(r)) |
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102 saveheads.add(r) |
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103 saveheads = [cl.node(r) for r in saveheads] |
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104 |
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105 # compute base nodes |
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106 if saverevs: |
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107 descendants = set(cl.descendants(*saverevs)) |
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108 saverevs.difference_update(descendants) |
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109 savebases = [cl.node(r) for r in saverevs] |
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110 stripbases = [cl.node(r) for r in tostrip] |
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111 |
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112 bm = repo._bookmarks |
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113 updatebm = [] |
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114 for m in bm: |
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115 rev = repo[bm[m]].rev() |
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116 if rev in tostrip: |
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117 updatebm.append(m) |
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118 |
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119 # create a changegroup for all the branches we need to keep |
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120 backupfile = None |
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121 if backup == "all": |
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122 backupfile = _bundle(repo, stripbases, cl.heads(), node, topic) |
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123 repo.ui.status(_("saved backup bundle to %s\n") % backupfile) |
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124 if saveheads or savebases: |
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125 # do not compress partial bundle if we remove it from disk later |
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126 chgrpfile = _bundle(repo, savebases, saveheads, node, 'temp', |
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127 compress=keeppartialbundle) |
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128 |
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129 mfst = repo.manifest |
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130 |
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131 tr = repo.transaction("strip") |
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132 offset = len(tr.entries) |
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133 |
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134 try: |
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135 tr.startgroup() |
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136 cl.strip(striprev, tr) |
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137 mfst.strip(striprev, tr) |
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138 for fn in files: |
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139 repo.file(fn).strip(striprev, tr) |
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140 tr.endgroup() |
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141 |
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142 try: |
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143 for i in xrange(offset, len(tr.entries)): |
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144 file, troffset, ignore = tr.entries[i] |
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145 repo.sopener(file, 'a').truncate(troffset) |
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146 tr.close() |
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147 except: # re-raises |
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148 tr.abort() |
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149 raise |
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150 |
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151 if saveheads or savebases: |
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152 ui.note(_("adding branch\n")) |
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153 f = open(chgrpfile, "rb") |
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154 gen = changegroup.readbundle(f, chgrpfile) |
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155 if not repo.ui.verbose: |
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156 # silence internal shuffling chatter |
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157 repo.ui.pushbuffer() |
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158 repo.addchangegroup(gen, 'strip', 'bundle:' + chgrpfile, True) |
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159 if not repo.ui.verbose: |
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160 repo.ui.popbuffer() |
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161 f.close() |
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162 if not keeppartialbundle: |
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163 os.unlink(chgrpfile) |
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164 |
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165 # remove undo files |
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166 for undofile in repo.undofiles(): |
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167 try: |
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168 os.unlink(undofile) |
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169 except OSError, e: |
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170 if e.errno != errno.ENOENT: |
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171 ui.warn(_('error removing %s: %s\n') % (undofile, str(e))) |
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172 |
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173 for m in updatebm: |
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174 bm[m] = repo['.'].node() |
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175 bookmarks.write(repo) |
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176 except: # re-raises |
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177 if backupfile: |
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178 ui.warn(_("strip failed, full bundle stored in '%s'\n") |
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179 % backupfile) |
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180 elif saveheads: |
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181 ui.warn(_("strip failed, partial bundle stored in '%s'\n") |
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182 % chgrpfile) |
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183 raise |
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184 |
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185 repo.destroyed(newheadrevs) |