Mercurial > hg
annotate hgext/split.py @ 37548:8e7a4435ab6d
httppeer: extract code for performing an HTTP request
This is generic and doesn't need to live as a method of httppeer.
Differential Revision: https://phab.mercurial-scm.org/D3233
author | Gregory Szorc <gregory.szorc@gmail.com> |
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date | Tue, 10 Apr 2018 10:27:49 -0700 |
parents | 83bade6206d4 |
children | 5ba0cf22e4d0 |
rev | line source |
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35455 | 1 # split.py - split a changeset into smaller ones |
2 # | |
3 # Copyright 2015 Laurent Charignon <lcharignon@fb.com> | |
4 # Copyright 2017 Facebook, Inc. | |
5 # | |
6 # This software may be used and distributed according to the terms of the | |
7 # GNU General Public License version 2 or any later version. | |
8 """command to split a changeset into smaller ones (EXPERIMENTAL)""" | |
9 | |
10 from __future__ import absolute_import | |
11 | |
12 from mercurial.i18n import _ | |
13 | |
14 from mercurial.node import ( | |
15 nullid, | |
16 short, | |
17 ) | |
18 | |
19 from mercurial import ( | |
20 bookmarks, | |
21 cmdutil, | |
22 commands, | |
23 error, | |
24 hg, | |
25 obsolete, | |
26 phases, | |
36400
7b86aa31b004
py3: fix handling of keyword arguments at more places
Pulkit Goyal <7895pulkit@gmail.com>
parents:
35455
diff
changeset
|
27 pycompat, |
35455 | 28 registrar, |
29 revsetlang, | |
30 scmutil, | |
31 ) | |
32 | |
33 # allow people to use split without explicitly enabling rebase extension | |
34 from . import ( | |
35 rebase, | |
36 ) | |
37 | |
38 cmdtable = {} | |
39 command = registrar.command(cmdtable) | |
40 | |
41 # Note for extension authors: ONLY specify testedwith = 'ships-with-hg-core' for | |
42 # extensions which SHIP WITH MERCURIAL. Non-mainline extensions should | |
43 # be specifying the version(s) of Mercurial they are tested with, or | |
44 # leave the attribute unspecified. | |
45 testedwith = 'ships-with-hg-core' | |
46 | |
47 @command('^split', | |
48 [('r', 'rev', '', _("revision to split"), _('REV')), | |
49 ('', 'rebase', True, _('rebase descendants after split')), | |
50 ] + cmdutil.commitopts2, | |
51 _('hg split [--no-rebase] [[-r] REV]')) | |
52 def split(ui, repo, *revs, **opts): | |
53 """split a changeset into smaller ones | |
54 | |
55 Repeatedly prompt changes and commit message for new changesets until there | |
56 is nothing left in the original changeset. | |
57 | |
58 If --rev was not given, split the working directory parent. | |
59 | |
60 By default, rebase connected non-obsoleted descendants onto the new | |
61 changeset. Use --no-rebase to avoid the rebase. | |
62 """ | |
63 revlist = [] | |
64 if opts.get('rev'): | |
65 revlist.append(opts.get('rev')) | |
66 revlist.extend(revs) | |
67 with repo.wlock(), repo.lock(), repo.transaction('split') as tr: | |
68 revs = scmutil.revrange(repo, revlist or ['.']) | |
69 if len(revs) > 1: | |
70 raise error.Abort(_('cannot split multiple revisions')) | |
71 | |
72 rev = revs.first() | |
73 ctx = repo[rev] | |
74 if rev is None or ctx.node() == nullid: | |
75 ui.status(_('nothing to split\n')) | |
76 return 1 | |
77 if ctx.node() is None: | |
78 raise error.Abort(_('cannot split working directory')) | |
79 | |
80 # rewriteutil.precheck is not very useful here because: | |
81 # 1. null check is done above and it's more friendly to return 1 | |
82 # instead of abort | |
83 # 2. mergestate check is done below by cmdutil.bailifchanged | |
84 # 3. unstable check is more complex here because of --rebase | |
85 # | |
86 # So only "public" check is useful and it's checked directly here. | |
87 if ctx.phase() == phases.public: | |
88 raise error.Abort(_('cannot split public changeset'), | |
89 hint=_("see 'hg help phases' for details")) | |
90 | |
91 descendants = list(repo.revs('(%d::) - (%d)', rev, rev)) | |
92 alloworphaned = obsolete.isenabled(repo, obsolete.allowunstableopt) | |
93 if opts.get('rebase'): | |
94 # Skip obsoleted descendants and their descendants so the rebase | |
95 # won't cause conflicts for sure. | |
96 torebase = list(repo.revs('%ld - (%ld & obsolete())::', | |
97 descendants, descendants)) | |
98 if not alloworphaned and len(torebase) != len(descendants): | |
99 raise error.Abort(_('split would leave orphaned changesets ' | |
100 'behind')) | |
101 else: | |
102 if not alloworphaned and descendants: | |
103 raise error.Abort( | |
104 _('cannot split changeset with children without rebase')) | |
105 torebase = () | |
106 | |
107 if len(ctx.parents()) > 1: | |
108 raise error.Abort(_('cannot split a merge changeset')) | |
109 | |
110 cmdutil.bailifchanged(repo) | |
111 | |
112 # Deactivate bookmark temporarily so it won't get moved unintentionally | |
113 bname = repo._activebookmark | |
114 if bname and repo._bookmarks[bname] != ctx.node(): | |
115 bookmarks.deactivate(repo) | |
116 | |
117 wnode = repo['.'].node() | |
118 top = None | |
119 try: | |
120 top = dosplit(ui, repo, tr, ctx, opts) | |
121 finally: | |
122 # top is None: split failed, need update --clean recovery. | |
123 # wnode == ctx.node(): wnode split, no need to update. | |
124 if top is None or wnode != ctx.node(): | |
125 hg.clean(repo, wnode, show_stats=False) | |
126 if bname: | |
127 bookmarks.activate(repo, bname) | |
128 if torebase and top: | |
129 dorebase(ui, repo, torebase, top) | |
130 | |
131 def dosplit(ui, repo, tr, ctx, opts): | |
132 committed = [] # [ctx] | |
133 | |
134 # Set working parent to ctx.p1(), and keep working copy as ctx's content | |
135 # NOTE: if we can have "update without touching working copy" API, the | |
136 # revert step could be cheaper. | |
137 hg.clean(repo, ctx.p1().node(), show_stats=False) | |
138 parents = repo.changelog.parents(ctx.node()) | |
139 ui.pushbuffer() | |
140 cmdutil.revert(ui, repo, ctx, parents) | |
141 ui.popbuffer() # discard "reverting ..." messages | |
142 | |
143 # Any modified, added, removed, deleted result means split is incomplete | |
144 incomplete = lambda repo: any(repo.status()[:4]) | |
145 | |
146 # Main split loop | |
147 while incomplete(repo): | |
148 if committed: | |
149 header = (_('HG: Splitting %s. So far it has been split into:\n') | |
150 % short(ctx.node())) | |
151 for c in committed: | |
152 firstline = c.description().split('\n', 1)[0] | |
153 header += _('HG: - %s: %s\n') % (short(c.node()), firstline) | |
154 header += _('HG: Write commit message for the next split ' | |
155 'changeset.\n') | |
156 else: | |
157 header = _('HG: Splitting %s. Write commit message for the ' | |
158 'first split changeset.\n') % short(ctx.node()) | |
159 opts.update({ | |
160 'edit': True, | |
161 'interactive': True, | |
162 'message': header + ctx.description(), | |
163 }) | |
36400
7b86aa31b004
py3: fix handling of keyword arguments at more places
Pulkit Goyal <7895pulkit@gmail.com>
parents:
35455
diff
changeset
|
164 commands.commit(ui, repo, **pycompat.strkwargs(opts)) |
35455 | 165 newctx = repo['.'] |
166 committed.append(newctx) | |
167 | |
168 if not committed: | |
169 raise error.Abort(_('cannot split an empty revision')) | |
170 | |
171 scmutil.cleanupnodes(repo, {ctx.node(): [c.node() for c in committed]}, | |
172 operation='split') | |
173 | |
174 return committed[-1] | |
175 | |
36408
83bade6206d4
split: use ctx.rev() instead of %d % ctx
Gregory Szorc <gregory.szorc@gmail.com>
parents:
36400
diff
changeset
|
176 def dorebase(ui, repo, src, destctx): |
35455 | 177 rebase.rebase(ui, repo, rev=[revsetlang.formatspec('%ld', src)], |
36408
83bade6206d4
split: use ctx.rev() instead of %d % ctx
Gregory Szorc <gregory.szorc@gmail.com>
parents:
36400
diff
changeset
|
178 dest=revsetlang.formatspec('%d', destctx.rev())) |