Mercurial > hg
annotate hgext/narrow/__init__.py @ 36821:0c7350656f93
xdiff: add comments for fields in xdfile_t
This makes the related code easier to understand.
Differential Revision: https://phab.mercurial-scm.org/D2685
author | Jun Wu <quark@fb.com> |
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date | Sun, 04 Mar 2018 11:30:16 -0800 |
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1 # __init__.py - narrowhg extension |
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2 # |
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3 # Copyright 2017 Google, Inc. |
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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 '''create clones which fetch history data for subset of files (EXPERIMENTAL)''' |
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8 |
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9 from __future__ import absolute_import |
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10 |
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11 # Note for extension authors: ONLY specify testedwith = 'ships-with-hg-core' for |
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12 # extensions which SHIP WITH MERCURIAL. Non-mainline extensions should |
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13 # be specifying the version(s) of Mercurial they are tested with, or |
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14 # leave the attribute unspecified. |
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15 testedwith = 'ships-with-hg-core' |
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16 |
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17 from mercurial import ( |
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18 changegroup, |
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19 extensions, |
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20 hg, |
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21 localrepo, |
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22 registrar, |
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23 verify as verifymod, |
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24 ) |
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25 |
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26 from . import ( |
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27 narrowbundle2, |
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28 narrowchangegroup, |
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29 narrowcommands, |
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30 narrowcopies, |
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31 narrowdirstate, |
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32 narrowmerge, |
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33 narrowpatch, |
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34 narrowrepo, |
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35 narrowrevlog, |
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36 narrowtemplates, |
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37 narrowwirepeer, |
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38 ) |
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39 |
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40 configtable = {} |
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41 configitem = registrar.configitem(configtable) |
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42 # Narrowhg *has* support for serving ellipsis nodes (which are used at |
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43 # least by Google's internal server), but that support is pretty |
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44 # fragile and has a lot of problems on real-world repositories that |
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45 # have complex graph topologies. This could probably be corrected, but |
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46 # absent someone needing the full support for ellipsis nodes in |
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47 # repositories with merges, it's unlikely this work will get done. As |
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48 # of this writining in late 2017, all repositories large enough for |
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49 # ellipsis nodes to be a hard requirement also enforce strictly linear |
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50 # history for other scaling reasons. |
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51 configitem('experimental', 'narrowservebrokenellipses', |
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52 default=False, |
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53 alias=[('narrow', 'serveellipses')], |
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54 ) |
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55 |
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56 # Export the commands table for Mercurial to see. |
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57 cmdtable = narrowcommands.table |
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58 |
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59 localrepo.localrepository._basesupported.add(changegroup.NARROW_REQUIREMENT) |
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60 |
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61 def uisetup(ui): |
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62 """Wraps user-facing mercurial commands with narrow-aware versions.""" |
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63 narrowrevlog.setup() |
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64 narrowbundle2.setup() |
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65 narrowmerge.setup() |
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66 narrowcommands.setup() |
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67 narrowchangegroup.setup() |
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68 narrowwirepeer.uisetup() |
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69 |
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70 def reposetup(ui, repo): |
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71 """Wraps local repositories with narrow repo support.""" |
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72 if not isinstance(repo, localrepo.localrepository): |
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73 return |
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74 |
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75 narrowrepo.wraprepo(repo) |
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76 if changegroup.NARROW_REQUIREMENT in repo.requirements: |
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77 narrowcopies.setup(repo) |
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78 narrowdirstate.setup(repo) |
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79 narrowpatch.setup(repo) |
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80 narrowwirepeer.reposetup(repo) |
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81 |
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82 def _verifierinit(orig, self, repo, matcher=None): |
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83 # The verifier's matcher argument was desgined for narrowhg, so it should |
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84 # be None from core. If another extension passes a matcher (unlikely), |
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85 # we'll have to fail until matchers can be composed more easily. |
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86 assert matcher is None |
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87 orig(self, repo, repo.narrowmatch()) |
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88 |
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89 def extsetup(ui): |
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90 extensions.wrapfunction(verifymod.verifier, '__init__', _verifierinit) |
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91 extensions.wrapfunction(hg, 'postshare', narrowrepo.wrappostshare) |
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92 extensions.wrapfunction(hg, 'copystore', narrowrepo.unsharenarrowspec) |
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93 |
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94 templatekeyword = narrowtemplates.templatekeyword |
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95 revsetpredicate = narrowtemplates.revsetpredicate |