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annotate hgext/fetch.py @ 4531:b51a8138292a

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Avoid extra filelogs entries. Right now, there are some situations in which localrepo.filecommit can create filelog entries even though they're not needed. For example: - permissions for a file have changed; - qrefresh can create a filelog entry identical to its parent (see the added test); - convert-repo creates extra filelog entries in every merge where the first parent has added files (for example, changeset ebebe9577a1a of the kernel repo added extra filelog entries to files in the arch/blackfin directory, even though the merge should only touch the drivers/ata directory). This makes "hg log file" in a converted repo less useful than it could be, since it may mention many merges that don't actually touch that specific file. They all come from the same basic problem: localrepo.commit (through filecommit) creates new filelog entries for all files passed to it (except for some cases during a merge). Patch and test case provided by Benoit. This should fix issue351.
author Alexis S. L. Carvalho <alexis@cecm.usp.br>
date Sat, 09 Jun 2007 01:04:28 -0300
parents 6b4127c7d52a
children 0c61124ad877
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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
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8 from mercurial.i18n import _
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9 from mercurial.node import *
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10 from mercurial import commands, hg, node, util
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11
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12 def fetch(ui, repo, source='default', **opts):
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13 '''Pull changes from a remote repository, merge new changes if needed.
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14
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15 This finds all changes from the repository at the specified path
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16 or URL and adds them to the local repository.
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17
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18 If the pulled changes add a new head, the head is automatically
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19 merged, and the result of the merge is committed. Otherwise, the
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20 working directory is updated.'''
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21
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22 def postincoming(other, modheads):
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23 if modheads == 0:
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24 return 0
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25 if modheads == 1:
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26 return hg.clean(repo, repo.changelog.tip(), wlock=wlock)
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27 newheads = repo.heads(parent)
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28 newchildren = [n for n in repo.heads(parent) if n != parent]
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29 newparent = parent
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30 if newchildren:
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31 newparent = newchildren[0]
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32 hg.clean(repo, newparent, wlock=wlock)
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33 newheads = [n for n in repo.heads() if n != newparent]
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34 err = False
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35 if newheads:
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36 ui.status(_('merging with new head %d:%s\n') %
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37 (repo.changelog.rev(newheads[0]), short(newheads[0])))
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38 err = hg.merge(repo, newheads[0], remind=False, wlock=wlock)
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39 if not err and len(newheads) > 1:
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40 ui.status(_('not merging with %d other new heads '
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41 '(use "hg heads" and "hg merge" to merge them)') %
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42 (len(newheads) - 1))
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43 if not err:
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44 mod, add, rem = repo.status(wlock=wlock)[:3]
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45 message = (commands.logmessage(opts) or
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46 (_('Automated merge with %s') % other.url()))
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47 n = repo.commit(mod + add + rem, message,
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48 opts['user'], opts['date'], lock=lock, wlock=wlock,
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49 force_editor=opts.get('force_editor'))
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50 ui.status(_('new changeset %d:%s merges remote changes '
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51 'with local\n') % (repo.changelog.rev(n),
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52 short(n)))
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53 def pull():
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54 commands.setremoteconfig(ui, opts)
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55
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56 other = hg.repository(ui, ui.expandpath(source))
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57 ui.status(_('pulling from %s\n') % ui.expandpath(source))
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58 revs = None
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59 if opts['rev'] and not other.local():
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60 raise util.Abort(_("fetch -r doesn't work for remote repositories yet"))
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61 elif opts['rev']:
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62 revs = [other.lookup(rev) for rev in opts['rev']]
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63 modheads = repo.pull(other, heads=revs, lock=lock)
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64 return postincoming(other, modheads)
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65
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66 parent, p2 = repo.dirstate.parents()
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67 if parent != repo.changelog.tip():
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68 raise util.Abort(_('working dir not at tip '
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69 '(use "hg update" to check out tip)'))
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70 if p2 != nullid:
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71 raise util.Abort(_('outstanding uncommitted merge'))
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72 wlock = repo.wlock()
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73 lock = repo.lock()
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74 try:
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75 mod, add, rem = repo.status(wlock=wlock)[:3]
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76 if mod or add or rem:
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77 raise util.Abort(_('outstanding uncommitted changes'))
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78 if len(repo.heads()) > 1:
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79 raise util.Abort(_('multiple heads in this repository '
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80 '(use "hg heads" and "hg merge" to merge)'))
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81 return pull()
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82 finally:
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83 lock.release()
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84 wlock.release()
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85
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86 cmdtable = {
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87 'fetch':
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88 (fetch,
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89 [('e', 'ssh', '', _('specify ssh command to use')),
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90 ('m', 'message', '', _('use <text> as commit message')),
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91 ('l', 'logfile', '', _('read the commit message from <file>')),
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92 ('d', 'date', '', _('record datecode as commit date')),
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93 ('u', 'user', '', _('record user as commiter')),
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94 ('r', 'rev', [], _('a specific revision you would like to pull')),
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95 ('f', 'force-editor', None, _('edit commit message')),
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96 ('', 'remotecmd', '', _('hg command to run on the remote side'))],
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97 'hg fetch [SOURCE]'),
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98 }