annotate hgext/convert/bzr.py @ 40880:7cda0cacbbf6

util: implement pop() on lrucachedict This moves __delitem__() to pop() as the requirement is pretty much the same, and reimplement __delitem__() by using pop().
author Yuya Nishihara <yuya@tcha.org>
date Sun, 04 Nov 2018 16:57:05 +0900
parents 85da230c316a
children 2372284d9457
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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1 # bzr.py - bzr support for the convert extension
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2 #
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3 # Copyright 2008, 2009 Marek Kubica <marek@xivilization.net> and others
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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 # This module is for handling 'bzr', that was formerly known as Bazaar-NG;
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9 # it cannot access 'bar' repositories, but they were never used very much
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10 from __future__ import absolute_import
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11
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12 import os
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13
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14 from mercurial.i18n import _
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15 from mercurial import (
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16 demandimport,
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17 error
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18 )
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19 from . import common
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20
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21 # these do not work with demandimport, blacklist
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22 demandimport.IGNORES.update([
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23 'bzrlib.transactions',
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24 'bzrlib.urlutils',
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25 'ElementPath',
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26 ])
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27
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28 try:
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29 # bazaar imports
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30 import bzrlib.bzrdir
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31 import bzrlib.errors
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32 import bzrlib.revision
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33 import bzrlib.revisionspec
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34 bzrdir = bzrlib.bzrdir
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35 errors = bzrlib.errors
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36 revision = bzrlib.revision
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37 revisionspec = bzrlib.revisionspec
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38 revisionspec.RevisionSpec
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39 except ImportError:
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40 pass
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41
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42 supportedkinds = ('file', 'symlink')
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43
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44 class bzr_source(common.converter_source):
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45 """Reads Bazaar repositories by using the Bazaar Python libraries"""
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46
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47 def __init__(self, ui, repotype, path, revs=None):
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48 super(bzr_source, self).__init__(ui, repotype, path, revs=revs)
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49
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50 if not os.path.exists(os.path.join(path, '.bzr')):
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51 raise common.NoRepo(_('%s does not look like a Bazaar repository')
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52 % path)
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53
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54 try:
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55 # access bzrlib stuff
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56 bzrdir
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57 except NameError:
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58 raise common.NoRepo(_('Bazaar modules could not be loaded'))
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59
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60 path = os.path.abspath(path)
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61 self._checkrepotype(path)
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62 try:
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63 self.sourcerepo = bzrdir.BzrDir.open(path).open_repository()
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64 except errors.NoRepositoryPresent:
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65 raise common.NoRepo(_('%s does not look like a Bazaar repository')
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66 % path)
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67 self._parentids = {}
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68 self._saverev = ui.configbool('convert', 'bzr.saverev')
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69
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70 def _checkrepotype(self, path):
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71 # Lightweight checkouts detection is informational but probably
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72 # fragile at API level. It should not terminate the conversion.
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73 try:
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74 dir = bzrdir.BzrDir.open_containing(path)[0]
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75 try:
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76 tree = dir.open_workingtree(recommend_upgrade=False)
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77 branch = tree.branch
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78 except (errors.NoWorkingTree, errors.NotLocalUrl):
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79 tree = None
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80 branch = dir.open_branch()
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81 if (tree is not None and tree.bzrdir.root_transport.base !=
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82 branch.bzrdir.root_transport.base):
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83 self.ui.warn(_('warning: lightweight checkouts may cause '
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84 'conversion failures, try with a regular '
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85 'branch instead.\n'))
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86 except Exception:
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87 self.ui.note(_('bzr source type could not be determined\n'))
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88
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89 def before(self):
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90 """Before the conversion begins, acquire a read lock
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91 for all the operations that might need it. Fortunately
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92 read locks don't block other reads or writes to the
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93 repository, so this shouldn't have any impact on the usage of
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94 the source repository.
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95
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96 The alternative would be locking on every operation that
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97 needs locks (there are currently two: getting the file and
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98 getting the parent map) and releasing immediately after,
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99 but this approach can take even 40% longer."""
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100 self.sourcerepo.lock_read()
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101
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102 def after(self):
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103 self.sourcerepo.unlock()
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104
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105 def _bzrbranches(self):
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106 return self.sourcerepo.find_branches(using=True)
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107
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108 def getheads(self):
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109 if not self.revs:
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110 # Set using=True to avoid nested repositories (see issue3254)
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111 heads = sorted([b.last_revision() for b in self._bzrbranches()])
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112 else:
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113 revid = None
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114 for branch in self._bzrbranches():
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115 try:
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116 r = revisionspec.RevisionSpec.from_string(self.revs[0])
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117 info = r.in_history(branch)
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118 except errors.BzrError:
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119 pass
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120 revid = info.rev_id
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121 if revid is None:
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122 raise error.Abort(_('%s is not a valid revision')
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123 % self.revs[0])
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124 heads = [revid]
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125 # Empty repositories return 'null:', which cannot be retrieved
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126 heads = [h for h in heads if h != 'null:']
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127 return heads
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128
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129 def getfile(self, name, rev):
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130 revtree = self.sourcerepo.revision_tree(rev)
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131 fileid = revtree.path2id(name.decode(self.encoding or 'utf-8'))
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132 kind = None
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133 if fileid is not None:
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134 kind = revtree.kind(fileid)
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135 if kind not in supportedkinds:
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136 # the file is not available anymore - was deleted
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650b5b6e75ed convert: use None value for missing files instead of overloading IOError
Mads Kiilerich <madski@unity3d.com>
parents: 17424
diff changeset
137 return None, None
11134
33010ff1fd6f convert: merge sources getmode() into getfile()
Patrick Mezard <pmezard@gmail.com>
parents: 10939
diff changeset
138 mode = self._modecache[(name, rev)]
8423
eb7be0e752d9 convert/bzr: fix symlinks target (issue1626/2)
Patrick Mezard <pmezard@gmail.com>
parents: 8165
diff changeset
139 if kind == 'symlink':
eb7be0e752d9 convert/bzr: fix symlinks target (issue1626/2)
Patrick Mezard <pmezard@gmail.com>
parents: 8165
diff changeset
140 target = revtree.get_symlink_target(fileid)
eb7be0e752d9 convert/bzr: fix symlinks target (issue1626/2)
Patrick Mezard <pmezard@gmail.com>
parents: 8165
diff changeset
141 if target is None:
26587
56b2bcea2529 error: get Abort from 'error' instead of 'util'
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 25748
diff changeset
142 raise error.Abort(_('%s.%s symlink has no target')
8423
eb7be0e752d9 convert/bzr: fix symlinks target (issue1626/2)
Patrick Mezard <pmezard@gmail.com>
parents: 8165
diff changeset
143 % (name, rev))
11134
33010ff1fd6f convert: merge sources getmode() into getfile()
Patrick Mezard <pmezard@gmail.com>
parents: 10939
diff changeset
144 return target, mode
8423
eb7be0e752d9 convert/bzr: fix symlinks target (issue1626/2)
Patrick Mezard <pmezard@gmail.com>
parents: 8165
diff changeset
145 else:
eb7be0e752d9 convert/bzr: fix symlinks target (issue1626/2)
Patrick Mezard <pmezard@gmail.com>
parents: 8165
diff changeset
146 sio = revtree.get_file(fileid)
11134
33010ff1fd6f convert: merge sources getmode() into getfile()
Patrick Mezard <pmezard@gmail.com>
parents: 10939
diff changeset
147 return sio.read(), mode
7053
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parents:
diff changeset
148
22300
35ab037de989 convert: introduce --full for converting all files
Mads Kiilerich <madski@unity3d.com>
parents: 22296
diff changeset
149 def getchanges(self, version, full):
35ab037de989 convert: introduce --full for converting all files
Mads Kiilerich <madski@unity3d.com>
parents: 22296
diff changeset
150 if full:
26779
aaa33ec3c951 grammar: use does instead of do where appropriate
timeless@mozdev.org
parents: 26587
diff changeset
151 raise error.Abort(_("convert from cvs does not support --full"))
7053
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diff changeset
152 self._modecache = {}
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parents:
diff changeset
153 self._revtree = self.sourcerepo.revision_tree(version)
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parents:
diff changeset
154 # get the parentids from the cache
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parents:
diff changeset
155 parentids = self._parentids.pop(version)
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parents:
diff changeset
156 # only diff against first parent id
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parents:
diff changeset
157 prevtree = self.sourcerepo.revision_tree(parentids[0])
24395
216fa1ba9993 convert: optimize convert of files that are unmodified from p2 in merges
Mads Kiilerich <madski@unity3d.com>
parents: 22300
diff changeset
158 files, changes = self._gettreechanges(self._revtree, prevtree)
216fa1ba9993 convert: optimize convert of files that are unmodified from p2 in merges
Mads Kiilerich <madski@unity3d.com>
parents: 22300
diff changeset
159 return files, changes, set()
7053
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parents:
diff changeset
160
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parents:
diff changeset
161 def getcommit(self, version):
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parents:
diff changeset
162 rev = self.sourcerepo.get_revision(version)
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parents:
diff changeset
163 # populate parent id cache
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parents:
diff changeset
164 if not rev.parent_ids:
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parents:
diff changeset
165 parents = []
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parents:
diff changeset
166 self._parentids[version] = (revision.NULL_REVISION,)
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parents:
diff changeset
167 else:
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Marek Kubica <marek@xivilization.net>
parents:
diff changeset
168 parents = self._filterghosts(rev.parent_ids)
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parents:
diff changeset
169 self._parentids[version] = parents
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parents:
diff changeset
170
16060
f84dda152a55 convert/bzr: convert all branches (issue3229) (BC)
Patrick Mezard <pmezard@gmail.com>
parents: 16059
diff changeset
171 branch = self.recode(rev.properties.get('branch-nick', u'default'))
f84dda152a55 convert/bzr: convert all branches (issue3229) (BC)
Patrick Mezard <pmezard@gmail.com>
parents: 16059
diff changeset
172 if branch == 'trunk':
f84dda152a55 convert/bzr: convert all branches (issue3229) (BC)
Patrick Mezard <pmezard@gmail.com>
parents: 16059
diff changeset
173 branch = 'default'
28411
098bb5660580 convert: bzr use absolute_import
timeless <timeless@mozdev.org>
parents: 26779
diff changeset
174 return common.commit(parents=parents,
8305
7a0fcdd3828f convert/bzr: handle Bazaar timestamps correctly (issue1652).
Greg Ward <greg-hg@gerg.ca>
parents: 8250
diff changeset
175 date='%d %d' % (rev.timestamp, -rev.timezone),
7053
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parents:
diff changeset
176 author=self.recode(rev.committer),
209ef5f3534c convert: add bzr source
Marek Kubica <marek@xivilization.net>
parents:
diff changeset
177 desc=self.recode(rev.message),
16060
f84dda152a55 convert/bzr: convert all branches (issue3229) (BC)
Patrick Mezard <pmezard@gmail.com>
parents: 16059
diff changeset
178 branch=branch,
38572
85da230c316a convert: add a config knob for not saving the bzr revision
Matt Harbison <matt_harbison@yahoo.com>
parents: 37843
diff changeset
179 rev=version,
85da230c316a convert: add a config knob for not saving the bzr revision
Matt Harbison <matt_harbison@yahoo.com>
parents: 37843
diff changeset
180 saverev=self._saverev)
7053
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parents:
diff changeset
181
209ef5f3534c convert: add bzr source
Marek Kubica <marek@xivilization.net>
parents:
diff changeset
182 def gettags(self):
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Marek Kubica <marek@xivilization.net>
parents:
diff changeset
183 bytetags = {}
16099
4e4c416a0b1f convert/bzr: ignore nested repos when listing branches (issue3254)
Patrick Mezard <patrick@mezard.eu>
parents: 16061
diff changeset
184 for branch in self._bzrbranches():
16060
f84dda152a55 convert/bzr: convert all branches (issue3229) (BC)
Patrick Mezard <pmezard@gmail.com>
parents: 16059
diff changeset
185 if not branch.supports_tags():
f84dda152a55 convert/bzr: convert all branches (issue3229) (BC)
Patrick Mezard <pmezard@gmail.com>
parents: 16059
diff changeset
186 return {}
f84dda152a55 convert/bzr: convert all branches (issue3229) (BC)
Patrick Mezard <pmezard@gmail.com>
parents: 16059
diff changeset
187 tagdict = branch.tags.get_tag_dict()
f84dda152a55 convert/bzr: convert all branches (issue3229) (BC)
Patrick Mezard <pmezard@gmail.com>
parents: 16059
diff changeset
188 for name, rev in tagdict.iteritems():
f84dda152a55 convert/bzr: convert all branches (issue3229) (BC)
Patrick Mezard <pmezard@gmail.com>
parents: 16059
diff changeset
189 bytetags[self.recode(name)] = rev
7053
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diff changeset
190 return bytetags
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parents:
diff changeset
191
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parents:
diff changeset
192 def getchangedfiles(self, rev, i):
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parents:
diff changeset
193 self._modecache = {}
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parents:
diff changeset
194 curtree = self.sourcerepo.revision_tree(rev)
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parents:
diff changeset
195 if i is not None:
8165
78658990c725 convert/bzr: make it work with filemaps (issue1631)
Patrick Mezard <pmezard@gmail.com>
parents: 8148
diff changeset
196 parentid = self._parentids[rev][i]
7053
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197 else:
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parents:
diff changeset
198 # no parent id, get the empty revision
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parents:
diff changeset
199 parentid = revision.NULL_REVISION
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parents:
diff changeset
200
209ef5f3534c convert: add bzr source
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parents:
diff changeset
201 prevtree = self.sourcerepo.revision_tree(parentid)
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parents:
diff changeset
202 changes = [e[0] for e in self._gettreechanges(curtree, prevtree)[0]]
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parents:
diff changeset
203 return changes
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parents:
diff changeset
204
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Marek Kubica <marek@xivilization.net>
parents:
diff changeset
205 def _gettreechanges(self, current, origin):
10394
4612cded5176 fix coding style (reported by pylint)
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents: 10282
diff changeset
206 revid = current._revision_id
7053
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207 changes = []
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parents:
diff changeset
208 renames = {}
15461
6ba2fc0a87ab convert/bzr: correctly handle divergent nested renames (issue3089)
Patrick Mezard <pmezard@gmail.com>
parents: 12063
diff changeset
209 seen = set()
35198
759234670d19 convert: restore the ability to use bzr < 2.6.0 (issue5733)
Matt Harbison <matt_harbison@yahoo.com>
parents: 34488
diff changeset
210
759234670d19 convert: restore the ability to use bzr < 2.6.0 (issue5733)
Matt Harbison <matt_harbison@yahoo.com>
parents: 34488
diff changeset
211 # Fall back to the deprecated attribute for legacy installations.
759234670d19 convert: restore the ability to use bzr < 2.6.0 (issue5733)
Matt Harbison <matt_harbison@yahoo.com>
parents: 34488
diff changeset
212 try:
759234670d19 convert: restore the ability to use bzr < 2.6.0 (issue5733)
Matt Harbison <matt_harbison@yahoo.com>
parents: 34488
diff changeset
213 inventory = origin.root_inventory
759234670d19 convert: restore the ability to use bzr < 2.6.0 (issue5733)
Matt Harbison <matt_harbison@yahoo.com>
parents: 34488
diff changeset
214 except AttributeError:
759234670d19 convert: restore the ability to use bzr < 2.6.0 (issue5733)
Matt Harbison <matt_harbison@yahoo.com>
parents: 34488
diff changeset
215 inventory = origin.inventory
759234670d19 convert: restore the ability to use bzr < 2.6.0 (issue5733)
Matt Harbison <matt_harbison@yahoo.com>
parents: 34488
diff changeset
216
15461
6ba2fc0a87ab convert/bzr: correctly handle divergent nested renames (issue3089)
Patrick Mezard <pmezard@gmail.com>
parents: 12063
diff changeset
217 # Process the entries by reverse lexicographic name order to
6ba2fc0a87ab convert/bzr: correctly handle divergent nested renames (issue3089)
Patrick Mezard <pmezard@gmail.com>
parents: 12063
diff changeset
218 # handle nested renames correctly, most specific first.
6ba2fc0a87ab convert/bzr: correctly handle divergent nested renames (issue3089)
Patrick Mezard <pmezard@gmail.com>
parents: 12063
diff changeset
219 curchanges = sorted(current.iter_changes(origin),
6ba2fc0a87ab convert/bzr: correctly handle divergent nested renames (issue3089)
Patrick Mezard <pmezard@gmail.com>
parents: 12063
diff changeset
220 key=lambda c: c[1][0] or c[1][1],
6ba2fc0a87ab convert/bzr: correctly handle divergent nested renames (issue3089)
Patrick Mezard <pmezard@gmail.com>
parents: 12063
diff changeset
221 reverse=True)
7053
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Marek Kubica <marek@xivilization.net>
parents:
diff changeset
222 for (fileid, paths, changed_content, versioned, parent, name,
15461
6ba2fc0a87ab convert/bzr: correctly handle divergent nested renames (issue3089)
Patrick Mezard <pmezard@gmail.com>
parents: 12063
diff changeset
223 kind, executable) in curchanges:
7053
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parents:
diff changeset
224
209ef5f3534c convert: add bzr source
Marek Kubica <marek@xivilization.net>
parents:
diff changeset
225 if paths[0] == u'' or paths[1] == u'':
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parents:
diff changeset
226 # ignore changes to tree root
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parents:
diff changeset
227 continue
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parents:
diff changeset
228
209ef5f3534c convert: add bzr source
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parents:
diff changeset
229 # bazaar tracks directories, mercurial does not, so
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parents:
diff changeset
230 # we have to rename the directory contents
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Marek Kubica <marek@xivilization.net>
parents:
diff changeset
231 if kind[1] == 'directory':
8126
13b36eb14324 convert/bzr: handle files replaced by directories (issue1623)
Patrick Mezard <pmezard@gmail.com>
parents: 8045
diff changeset
232 if kind[0] not in (None, 'directory'):
13b36eb14324 convert/bzr: handle files replaced by directories (issue1623)
Patrick Mezard <pmezard@gmail.com>
parents: 8045
diff changeset
233 # Replacing 'something' with a directory, record it
13b36eb14324 convert/bzr: handle files replaced by directories (issue1623)
Patrick Mezard <pmezard@gmail.com>
parents: 8045
diff changeset
234 # so it can be removed.
13b36eb14324 convert/bzr: handle files replaced by directories (issue1623)
Patrick Mezard <pmezard@gmail.com>
parents: 8045
diff changeset
235 changes.append((self.recode(paths[0]), revid))
13b36eb14324 convert/bzr: handle files replaced by directories (issue1623)
Patrick Mezard <pmezard@gmail.com>
parents: 8045
diff changeset
236
15461
6ba2fc0a87ab convert/bzr: correctly handle divergent nested renames (issue3089)
Patrick Mezard <pmezard@gmail.com>
parents: 12063
diff changeset
237 if kind[0] == 'directory' and None not in paths:
6ba2fc0a87ab convert/bzr: correctly handle divergent nested renames (issue3089)
Patrick Mezard <pmezard@gmail.com>
parents: 12063
diff changeset
238 renaming = paths[0] != paths[1]
7053
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parents:
diff changeset
239 # neither an add nor an delete - a move
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parents:
diff changeset
240 # rename all directory contents manually
35198
759234670d19 convert: restore the ability to use bzr < 2.6.0 (issue5733)
Matt Harbison <matt_harbison@yahoo.com>
parents: 34488
diff changeset
241 subdir = inventory.path2id(paths[0])
7053
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parents:
diff changeset
242 # get all child-entries of the directory
35198
759234670d19 convert: restore the ability to use bzr < 2.6.0 (issue5733)
Matt Harbison <matt_harbison@yahoo.com>
parents: 34488
diff changeset
243 for name, entry in inventory.iter_entries(subdir):
7053
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parents:
diff changeset
244 # hg does not track directory renames
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Marek Kubica <marek@xivilization.net>
parents:
diff changeset
245 if entry.kind == 'directory':
209ef5f3534c convert: add bzr source
Marek Kubica <marek@xivilization.net>
parents:
diff changeset
246 continue
209ef5f3534c convert: add bzr source
Marek Kubica <marek@xivilization.net>
parents:
diff changeset
247 frompath = self.recode(paths[0] + '/' + name)
15461
6ba2fc0a87ab convert/bzr: correctly handle divergent nested renames (issue3089)
Patrick Mezard <pmezard@gmail.com>
parents: 12063
diff changeset
248 if frompath in seen:
6ba2fc0a87ab convert/bzr: correctly handle divergent nested renames (issue3089)
Patrick Mezard <pmezard@gmail.com>
parents: 12063
diff changeset
249 # Already handled by a more specific change entry
6ba2fc0a87ab convert/bzr: correctly handle divergent nested renames (issue3089)
Patrick Mezard <pmezard@gmail.com>
parents: 12063
diff changeset
250 # This is important when you have:
6ba2fc0a87ab convert/bzr: correctly handle divergent nested renames (issue3089)
Patrick Mezard <pmezard@gmail.com>
parents: 12063
diff changeset
251 # a => b
6ba2fc0a87ab convert/bzr: correctly handle divergent nested renames (issue3089)
Patrick Mezard <pmezard@gmail.com>
parents: 12063
diff changeset
252 # a/c => a/c
6ba2fc0a87ab convert/bzr: correctly handle divergent nested renames (issue3089)
Patrick Mezard <pmezard@gmail.com>
parents: 12063
diff changeset
253 # Here a/c must not be renamed into b/c
6ba2fc0a87ab convert/bzr: correctly handle divergent nested renames (issue3089)
Patrick Mezard <pmezard@gmail.com>
parents: 12063
diff changeset
254 continue
6ba2fc0a87ab convert/bzr: correctly handle divergent nested renames (issue3089)
Patrick Mezard <pmezard@gmail.com>
parents: 12063
diff changeset
255 seen.add(frompath)
6ba2fc0a87ab convert/bzr: correctly handle divergent nested renames (issue3089)
Patrick Mezard <pmezard@gmail.com>
parents: 12063
diff changeset
256 if not renaming:
6ba2fc0a87ab convert/bzr: correctly handle divergent nested renames (issue3089)
Patrick Mezard <pmezard@gmail.com>
parents: 12063
diff changeset
257 continue
7053
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parents:
diff changeset
258 topath = self.recode(paths[1] + '/' + name)
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parents:
diff changeset
259 # register the files as changed
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parents:
diff changeset
260 changes.append((frompath, revid))
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parents:
diff changeset
261 changes.append((topath, revid))
209ef5f3534c convert: add bzr source
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parents:
diff changeset
262 # add to mode cache
10282
08a0f04b56bd many, many trivial check-code fixups
Matt Mackall <mpm@selenic.com>
parents: 10263
diff changeset
263 mode = ((entry.executable and 'x')
08a0f04b56bd many, many trivial check-code fixups
Matt Mackall <mpm@selenic.com>
parents: 10263
diff changeset
264 or (entry.kind == 'symlink' and 's')
7053
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parents:
diff changeset
265 or '')
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parents:
diff changeset
266 self._modecache[(topath, revid)] = mode
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parents:
diff changeset
267 # register the change as move
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parents:
diff changeset
268 renames[topath] = frompath
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parents:
diff changeset
269
17424
e7cfe3587ea4 fix trivial spelling errors
Mads Kiilerich <mads@kiilerich.com>
parents: 16689
diff changeset
270 # no further changes, go to the next change
7053
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parents:
diff changeset
271 continue
209ef5f3534c convert: add bzr source
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parents:
diff changeset
272
209ef5f3534c convert: add bzr source
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parents:
diff changeset
273 # we got unicode paths, need to convert them
16059
f5b6046f6ce8 convert/bzr: expect unicode metadata, encode in UTF-8 (issue3232)
Patrick Mezard <pmezard@gmail.com>
parents: 15461
diff changeset
274 path, topath = paths
f5b6046f6ce8 convert/bzr: expect unicode metadata, encode in UTF-8 (issue3232)
Patrick Mezard <pmezard@gmail.com>
parents: 15461
diff changeset
275 if path is not None:
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276 path = self.recode(path)
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277 if topath is not None:
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278 topath = self.recode(topath)
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6ba2fc0a87ab convert/bzr: correctly handle divergent nested renames (issue3089)
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279 seen.add(path or topath)
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280
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281 if topath is None:
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282 # file deleted
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283 changes.append((path, revid))
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284 continue
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285
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286 # renamed
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287 if path and path != topath:
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288 renames[topath] = path
8035
cb77c0fbec39 convert: remove renamed source files (issue1505)
Xavier ALT <dex@phoenix-ind.net>
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289 changes.append((path, revid))
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290
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291 # populate the mode cache
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292 kind, executable = [e[1] for e in (kind, executable)]
8148
adce97d28389 convert/bzr: fix symlink handling (issue1626)
Patrick Mezard <pmezard@gmail.com>
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293 mode = ((executable and 'x') or (kind == 'symlink' and 'l')
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294 or '')
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295 self._modecache[(topath, revid)] = mode
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296 changes.append((topath, revid))
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297
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298 return changes, renames
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299
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300 def _filterghosts(self, ids):
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301 """Filters out ghost revisions which hg does not support, see
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302 <http://bazaar-vcs.org/GhostRevision>
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303 """
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304 parentmap = self.sourcerepo.get_parent_map(ids)
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Dirkjan Ochtman <dirkjan@ochtman.nl>
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305 parents = tuple([parent for parent in ids if parent in parentmap])
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306 return parents