Mercurial > hg
annotate hgext/narrow/narrowmerge.py @ 36160:9fd8c2a3db5a
narrowspec: move module into core
Having support for parsing the narrow specification in core is
necessary for moving many other parts of narrow to core.
We do still want to harmonize the narrow spec with the sparse
spec. And the format needs to be documented. But this shouldn't
hold up the code moving to core.
Differential Revision: https://phab.mercurial-scm.org/D2201
author | Gregory Szorc <gregory.szorc@gmail.com> |
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date | Mon, 12 Feb 2018 16:21:34 -0800 |
parents | a2a6e724d61a |
children | 53fe5a1a92bd |
rev | line source |
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1 # narrowmerge.py - extensions to mercurial merge module to support narrow clones |
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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 |
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8 from __future__ import absolute_import |
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9 |
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10 from mercurial.i18n import _ |
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11 from mercurial import ( |
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12 copies, |
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13 error, |
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14 extensions, |
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15 merge, |
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16 util, |
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17 ) |
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18 |
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19 def setup(): |
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20 def _manifestmerge(orig, repo, wctx, p2, pa, branchmerge, *args, **kwargs): |
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21 """Filter updates to only lay out files that match the narrow spec.""" |
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22 actions, diverge, renamedelete = orig( |
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23 repo, wctx, p2, pa, branchmerge, *args, **kwargs) |
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24 |
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25 if not util.safehasattr(repo, 'narrowmatch'): |
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26 return actions, diverge, renamedelete |
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27 |
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28 nooptypes = set(['k']) # TODO: handle with nonconflicttypes |
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29 nonconflicttypes = set('a am c cm f g r e'.split()) |
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30 narrowmatch = repo.narrowmatch() |
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31 for f, action in actions.items(): |
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32 if narrowmatch(f): |
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33 pass |
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34 elif not branchmerge: |
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35 del actions[f] # just updating, ignore changes outside clone |
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36 elif action[0] in nooptypes: |
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37 del actions[f] # merge does not affect file |
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38 elif action[0] in nonconflicttypes: |
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39 raise error.Abort(_('merge affects file \'%s\' outside narrow, ' |
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40 'which is not yet supported') % f, |
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41 hint=_('merging in the other direction ' |
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42 'may work')) |
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43 else: |
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44 raise error.Abort(_('conflict in file \'%s\' is outside ' |
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45 'narrow clone') % f) |
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46 |
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47 return actions, diverge, renamedelete |
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48 |
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49 extensions.wrapfunction(merge, 'manifestmerge', _manifestmerge) |
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50 |
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51 def _checkcollision(orig, repo, wmf, actions): |
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52 if util.safehasattr(repo, 'narrowmatch'): |
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53 narrowmatch = repo.narrowmatch() |
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54 wmf = wmf.matches(narrowmatch) |
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55 if actions: |
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56 narrowactions = {} |
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57 for m, actionsfortype in actions.iteritems(): |
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58 narrowactions[m] = [] |
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59 for (f, args, msg) in actionsfortype: |
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60 if narrowmatch(f): |
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61 narrowactions[m].append((f, args, msg)) |
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62 actions = narrowactions |
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63 return orig(repo, wmf, actions) |
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64 |
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65 extensions.wrapfunction(merge, '_checkcollision', _checkcollision) |
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66 |
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67 def _computenonoverlap(orig, repo, *args, **kwargs): |
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68 u1, u2 = orig(repo, *args, **kwargs) |
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69 if not util.safehasattr(repo, 'narrowmatch'): |
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70 return u1, u2 |
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71 |
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72 narrowmatch = repo.narrowmatch() |
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73 u1 = [f for f in u1 if narrowmatch(f)] |
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74 u2 = [f for f in u2 if narrowmatch(f)] |
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75 return u1, u2 |
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76 extensions.wrapfunction(copies, '_computenonoverlap', _computenonoverlap) |