Mercurial > public > mercurial-scm > hg-stable

annotate hgext/fetch.py @ 7007:a6b74fbb5ce0

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fetch: added support for named branches Previously, fetch didn't really work when there were multiple named branches in the repository. Now it tries to do the right thing(tm) in all situations.
author Sune Foldager <cryo@cyanite.org>
date Mon, 08 Sep 2008 12:55:46 +0200
parents b2bc2d984bac
children 6489ee64b522
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1 # fetch.py - pull and merge remote changes
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2 #
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3 # Copyright 2006 Vadim Gelfer <vadim.gelfer@gmail.com>
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4 #
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5 # This software may be used and distributed according to the terms
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6 # of the GNU General Public License, incorporated herein by reference.
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7 '''pulling, updating and merging in one command'''
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8
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9 from mercurial.i18n import _
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10 from mercurial.node import nullid, short
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11 from mercurial import commands, cmdutil, hg, util
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12
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13 def fetch(ui, repo, source='default', **opts):
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14 '''Pull changes from a remote repository, merge new changes if needed.
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15
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16 This finds all changes from the repository at the specified path
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17 or URL and adds them to the local repository.
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18
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19 If the pulled changes add a new branch head, the head is automatically
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20 merged, and the result of the merge is committed. Otherwise, the
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21 working directory is updated to include the new changes.
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22
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23 When a merge occurs, the newly pulled changes are assumed to be
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24 "authoritative". The head of the new changes is used as the first
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25 parent, with local changes as the second. To switch the merge
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26 order, use --switch-parent.
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27
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28 See 'hg help dates' for a list of formats valid for -d/--date.
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29 '''
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30
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31 date = opts.get('date')
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32 if date:
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33 opts['date'] = util.parsedate(date)
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34
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35 parent, p2 = repo.dirstate.parents()
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36 branch = repo[parent].branch()
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37 if parent != repo[branch].node():
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38 raise util.Abort(_('working dir not at branch tip '
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39 '(use "hg update" to check out branch tip)'))
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40
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41 if p2 != nullid:
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42 raise util.Abort(_('outstanding uncommitted merge'))
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43
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44 wlock = lock = None
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45 try:
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46 wlock = repo.wlock()
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47 lock = repo.lock()
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48 mod, add, rem, del_ = repo.status()[:4]
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49
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50 if mod or add or rem:
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51 raise util.Abort(_('outstanding uncommitted changes'))
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52 if del_:
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53 raise util.Abort(_('working directory is missing some files'))
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54 if len(repo.branchheads(branch)) > 1:
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55 raise util.Abort(_('multiple heads in this branch '
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56 '(use "hg heads ." and "hg merge" to merge)'))
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57
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58 cmdutil.setremoteconfig(ui, opts)
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59
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60 other = hg.repository(ui, ui.expandpath(source))
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61 ui.status(_('pulling from %s\n') %
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62 util.hidepassword(ui.expandpath(source)))
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63 revs = None
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64 if opts['rev']:
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65 if not other.local():
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66 raise util.Abort(_("fetch -r doesn't work for remote "
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67 "repositories yet"))
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68 else:
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69 revs = [other.lookup(rev) for rev in opts['rev']]
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70
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71 # Are there any changes at all?
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72 modheads = repo.pull(other, heads=revs)
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73 if modheads == 0:
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74 return 0
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75
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76 # Is this a simple fast-forward along the current branch?
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77 newheads = repo.branchheads(branch)
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78 newchildren = repo.changelog.nodesbetween([parent], newheads)[2]
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79 if len(newheads) == 1:
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80 if newchildren[0] != parent:
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81 return hg.clean(repo, newchildren[0])
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82 else:
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83 return
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84
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85 # Are there more than one additional branch heads?
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86 newchildren = [n for n in newchildren if n != parent]
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87 newparent = parent
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88 if newchildren:
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89 newparent = newchildren[0]
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90 hg.clean(repo, newparent)
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91 newheads = [n for n in newheads if n != newparent]
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92 if len(newheads) > 1:
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93 ui.status(_('not merging with %d other new branch heads '
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94 '(use "hg heads ." and "hg merge" to merge them)\n') %
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95 (len(newheads) - 1))
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96 return
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97
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98 # Otherwise, let's merge.
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99 err = False
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100 if newheads:
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101 # By default, we consider the repository we're pulling
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102 # *from* as authoritative, so we merge our changes into
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103 # theirs.
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104 if opts['switch_parent']:
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105 firstparent, secondparent = newparent, newheads[0]
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106 else:
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107 firstparent, secondparent = newheads[0], newparent
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108 ui.status(_('updating to %d:%s\n') %
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109 (repo.changelog.rev(firstparent),
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110 short(firstparent)))
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111 hg.clean(repo, firstparent)
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112 ui.status(_('merging with %d:%s\n') %
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113 (repo.changelog.rev(secondparent), short(secondparent)))
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114 err = hg.merge(repo, secondparent, remind=False)
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115
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116 if not err:
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117 mod, add, rem = repo.status()[:3]
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118 message = (cmdutil.logmessage(opts) or
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119 (_('Automated merge with %s') %
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120 util.removeauth(other.url())))
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121 force_editor = opts.get('force_editor') or opts.get('edit')
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122 n = repo.commit(mod + add + rem, message,
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123 opts['user'], opts['date'], force=True,
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124 force_editor=force_editor)
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125 ui.status(_('new changeset %d:%s merges remote changes '
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126 'with local\n') % (repo.changelog.rev(n),
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127 short(n)))
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128
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129 finally:
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130 del lock, wlock
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131
135823f37304 new extension: fetch -> combine pull and merge/update
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
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132 cmdtable = {
135823f37304 new extension: fetch -> combine pull and merge/update
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
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133 'fetch':
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Thomas Arendsen Hein <thomas@intevation.de>
parents: 4549
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134 (fetch,
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c80af96943aa refactor options from cmdtable
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents: 4917
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135 [('r', 'rev', [], _('a specific revision you would like to pull')),
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595a69a01129 fetch: rename --force-editor option to --edit, for consistency
Bryan O'Sullivan <bos@serpentine.com>
parents: 6212
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136 ('e', 'edit', None, _('edit commit message')),
595a69a01129 fetch: rename --force-editor option to --edit, for consistency
Bryan O'Sullivan <bos@serpentine.com>
parents: 6212
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137 ('', 'force-editor', None, _('edit commit message (DEPRECATED)')),
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0b6f12495276 fetch: switch the default parent used for a merge
Bryan O'Sullivan <bos@serpentine.com>
parents: 6163
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138 ('', 'switch-parent', None, _('switch parents when merging')),
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c80af96943aa refactor options from cmdtable
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents: 4917
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139 ] + commands.commitopts + commands.commitopts2 + commands.remoteopts,
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Thomas Arendsen Hein <thomas@intevation.de>
parents: 4549
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140 _('hg fetch [SOURCE]')),
eadfaa9ec487 Updated command tables in commands.py and hgext extensions.
Thomas Arendsen Hein <thomas@intevation.de>
parents: 4549
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141 }