Mercurial > hg
annotate hgext/transplant.py @ 3935:1158d7018052
Move README info to wiki
author | Matt Mackall <mpm@selenic.com> |
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date | Tue, 19 Dec 2006 17:17:08 -0600 |
parents | 6b4127c7d52a |
children | da3dc89f1e9a |
rev | line source |
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3714 | 1 # Patch transplanting extension for Mercurial |
2 # | |
3 # Copyright 2006 Brendan Cully <brendan@kublai.com> | |
4 # | |
5 # This software may be used and distributed according to the terms | |
6 # of the GNU General Public License, incorporated herein by reference. | |
7 | |
3891 | 8 from mercurial.i18n import _ |
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9 import os, tempfile |
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10 from mercurial import bundlerepo, cmdutil, commands, hg, merge, patch, revlog |
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11 from mercurial import util |
3714 | 12 |
13 '''patch transplanting tool | |
14 | |
15 This extension allows you to transplant patches from another branch. | |
16 | |
17 Transplanted patches are recorded in .hg/transplant/transplants, as a map | |
18 from a changeset hash to its hash in the source repository. | |
19 ''' | |
20 | |
21 class transplantentry: | |
22 def __init__(self, lnode, rnode): | |
23 self.lnode = lnode | |
24 self.rnode = rnode | |
25 | |
26 class transplants: | |
27 def __init__(self, path=None, transplantfile=None, opener=None): | |
28 self.path = path | |
29 self.transplantfile = transplantfile | |
30 self.opener = opener | |
31 | |
32 if not opener: | |
33 self.opener = util.opener(self.path) | |
34 self.transplants = [] | |
35 self.dirty = False | |
36 self.read() | |
37 | |
38 def read(self): | |
39 abspath = os.path.join(self.path, self.transplantfile) | |
40 if self.transplantfile and os.path.exists(abspath): | |
41 for line in self.opener(self.transplantfile).read().splitlines(): | |
42 lnode, rnode = map(revlog.bin, line.split(':')) | |
43 self.transplants.append(transplantentry(lnode, rnode)) | |
44 | |
45 def write(self): | |
46 if self.dirty and self.transplantfile: | |
47 if not os.path.isdir(self.path): | |
48 os.mkdir(self.path) | |
49 fp = self.opener(self.transplantfile, 'w') | |
50 for c in self.transplants: | |
51 l, r = map(revlog.hex, (c.lnode, c.rnode)) | |
52 fp.write(l + ':' + r + '\n') | |
53 fp.close() | |
54 self.dirty = False | |
55 | |
56 def get(self, rnode): | |
57 return [t for t in self.transplants if t.rnode == rnode] | |
58 | |
59 def set(self, lnode, rnode): | |
60 self.transplants.append(transplantentry(lnode, rnode)) | |
61 self.dirty = True | |
62 | |
63 def remove(self, transplant): | |
64 del self.transplants[self.transplants.index(transplant)] | |
65 self.dirty = True | |
66 | |
67 class transplanter: | |
68 def __init__(self, ui, repo): | |
69 self.ui = ui | |
70 self.path = repo.join('transplant') | |
71 self.opener = util.opener(self.path) | |
72 self.transplants = transplants(self.path, 'transplants', opener=self.opener) | |
73 | |
74 def applied(self, repo, node, parent): | |
75 '''returns True if a node is already an ancestor of parent | |
76 or has already been transplanted''' | |
77 if hasnode(repo, node): | |
78 if node in repo.changelog.reachable(parent, stop=node): | |
79 return True | |
80 for t in self.transplants.get(node): | |
81 # it might have been stripped | |
82 if not hasnode(repo, t.lnode): | |
83 self.transplants.remove(t) | |
84 return False | |
85 if t.lnode in repo.changelog.reachable(parent, stop=t.lnode): | |
86 return True | |
87 return False | |
88 | |
89 def apply(self, repo, source, revmap, merges, opts={}): | |
90 '''apply the revisions in revmap one by one in revision order''' | |
91 revs = revmap.keys() | |
92 revs.sort() | |
93 | |
94 p1, p2 = repo.dirstate.parents() | |
95 pulls = [] | |
96 diffopts = patch.diffopts(self.ui, opts) | |
97 diffopts.git = True | |
98 | |
99 lock = repo.lock() | |
100 wlock = repo.wlock() | |
101 try: | |
102 for rev in revs: | |
103 node = revmap[rev] | |
104 revstr = '%s:%s' % (rev, revlog.short(node)) | |
105 | |
106 if self.applied(repo, node, p1): | |
107 self.ui.warn(_('skipping already applied revision %s\n') % | |
108 revstr) | |
109 continue | |
110 | |
111 parents = source.changelog.parents(node) | |
112 if not opts.get('filter'): | |
113 # If the changeset parent is the same as the wdir's parent, | |
114 # just pull it. | |
115 if parents[0] == p1: | |
116 pulls.append(node) | |
117 p1 = node | |
118 continue | |
119 if pulls: | |
120 if source != repo: | |
121 repo.pull(source, heads=pulls, lock=lock) | |
122 merge.update(repo, pulls[-1], wlock=wlock) | |
123 p1, p2 = repo.dirstate.parents() | |
124 pulls = [] | |
125 | |
126 domerge = False | |
127 if node in merges: | |
128 # pulling all the merge revs at once would mean we couldn't | |
129 # transplant after the latest even if transplants before them | |
130 # fail. | |
131 domerge = True | |
132 if not hasnode(repo, node): | |
133 repo.pull(source, heads=[node], lock=lock) | |
134 | |
135 if parents[1] != revlog.nullid: | |
136 self.ui.note(_('skipping merge changeset %s:%s\n') | |
137 % (rev, revlog.short(node))) | |
138 patchfile = None | |
139 else: | |
140 fd, patchfile = tempfile.mkstemp(prefix='hg-transplant-') | |
141 fp = os.fdopen(fd, 'w') | |
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142 patch.diff(source, parents[0], node, fp=fp, opts=diffopts) |
3714 | 143 fp.close() |
144 | |
145 del revmap[rev] | |
146 if patchfile or domerge: | |
147 try: | |
148 n = self.applyone(repo, node, source.changelog.read(node), | |
149 patchfile, merge=domerge, | |
150 log=opts.get('log'), | |
151 filter=opts.get('filter'), | |
152 lock=lock, wlock=wlock) | |
153 if domerge: | |
154 self.ui.status(_('%s merged at %s\n') % (revstr, | |
155 revlog.short(n))) | |
156 else: | |
157 self.ui.status(_('%s transplanted to %s\n') % (revlog.short(node), | |
158 revlog.short(n))) | |
159 finally: | |
160 if patchfile: | |
161 os.unlink(patchfile) | |
162 if pulls: | |
163 repo.pull(source, heads=pulls, lock=lock) | |
164 merge.update(repo, pulls[-1], wlock=wlock) | |
165 finally: | |
166 self.saveseries(revmap, merges) | |
167 self.transplants.write() | |
168 | |
169 def filter(self, filter, changelog, patchfile): | |
170 '''arbitrarily rewrite changeset before applying it''' | |
171 | |
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172 self.ui.status('filtering %s\n' % patchfile) |
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173 user, date, msg = (changelog[1], changelog[2], changelog[4]) |
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174 |
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175 fd, headerfile = tempfile.mkstemp(prefix='hg-transplant-') |
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176 fp = os.fdopen(fd, 'w') |
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177 fp.write("# HG changeset patch\n") |
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178 fp.write("# User %s\n" % user) |
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179 fp.write("# Date %d %d\n" % date) |
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180 fp.write(changelog[4]) |
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181 fp.close() |
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182 |
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183 try: |
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184 util.system('%s %s %s' % (filter, util.shellquote(headerfile), |
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185 util.shellquote(patchfile)), |
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186 environ={'HGUSER': changelog[1]}, |
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187 onerr=util.Abort, errprefix=_('filter failed')) |
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188 user, date, msg = self.parselog(file(headerfile))[1:4] |
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189 finally: |
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190 os.unlink(headerfile) |
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191 |
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192 return (user, date, msg) |
3714 | 193 |
194 def applyone(self, repo, node, cl, patchfile, merge=False, log=False, | |
195 filter=None, lock=None, wlock=None): | |
196 '''apply the patch in patchfile to the repository as a transplant''' | |
197 (manifest, user, (time, timezone), files, message) = cl[:5] | |
198 date = "%d %d" % (time, timezone) | |
199 extra = {'transplant_source': node} | |
200 if filter: | |
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201 (user, date, message) = self.filter(filter, cl, patchfile) |
3714 | 202 |
203 if log: | |
204 message += '\n(transplanted from %s)' % revlog.hex(node) | |
205 | |
206 self.ui.status(_('applying %s\n') % revlog.short(node)) | |
207 self.ui.note('%s %s\n%s\n' % (user, date, message)) | |
208 | |
209 if not patchfile and not merge: | |
210 raise util.Abort(_('can only omit patchfile if merging')) | |
211 if patchfile: | |
212 try: | |
213 files = {} | |
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214 try: |
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215 fuzz = patch.patch(patchfile, self.ui, cwd=repo.root, |
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216 files=files) |
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217 if not files: |
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218 self.ui.warn(_('%s: empty changeset') % revlog.hex(node)) |
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219 return |
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220 finally: |
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221 files = patch.updatedir(self.ui, repo, files, wlock=wlock) |
3714 | 222 except Exception, inst: |
223 if filter: | |
224 os.unlink(patchfile) | |
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225 seriespath = os.path.join(self.path, 'series') |
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226 if os.path.exists(seriespath): |
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227 os.unlink(seriespath) |
3714 | 228 p1 = repo.dirstate.parents()[0] |
229 p2 = node | |
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230 self.log(user, date, message, p1, p2, merge=merge) |
3714 | 231 self.ui.write(str(inst) + '\n') |
232 raise util.Abort(_('Fix up the merge and run hg transplant --continue')) | |
233 else: | |
234 files = None | |
235 if merge: | |
236 p1, p2 = repo.dirstate.parents() | |
237 repo.dirstate.setparents(p1, node) | |
238 | |
239 n = repo.commit(files, message, user, date, lock=lock, wlock=wlock, | |
240 extra=extra) | |
241 if not merge: | |
242 self.transplants.set(n, node) | |
243 | |
244 return n | |
245 | |
246 def resume(self, repo, source, opts=None): | |
247 '''recover last transaction and apply remaining changesets''' | |
248 if os.path.exists(os.path.join(self.path, 'journal')): | |
249 n, node = self.recover(repo) | |
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250 self.ui.status(_('%s transplanted as %s\n') % (revlog.short(node), |
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251 revlog.short(n))) |
3714 | 252 seriespath = os.path.join(self.path, 'series') |
253 if not os.path.exists(seriespath): | |
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254 self.transplants.write() |
3714 | 255 return |
256 nodes, merges = self.readseries() | |
257 revmap = {} | |
258 for n in nodes: | |
259 revmap[source.changelog.rev(n)] = n | |
260 os.unlink(seriespath) | |
261 | |
262 self.apply(repo, source, revmap, merges, opts) | |
263 | |
264 def recover(self, repo): | |
265 '''commit working directory using journal metadata''' | |
266 node, user, date, message, parents = self.readlog() | |
267 merge = len(parents) == 2 | |
268 | |
269 if not user or not date or not message or not parents[0]: | |
270 raise util.Abort(_('transplant log file is corrupt')) | |
271 | |
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272 extra = {'transplant_source': node} |
3714 | 273 wlock = repo.wlock() |
274 p1, p2 = repo.dirstate.parents() | |
275 if p1 != parents[0]: | |
276 raise util.Abort(_('working dir not at transplant parent %s') % | |
277 revlog.hex(parents[0])) | |
278 if merge: | |
279 repo.dirstate.setparents(p1, parents[1]) | |
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280 n = repo.commit(None, message, user, date, wlock=wlock, extra=extra) |
3714 | 281 if not n: |
282 raise util.Abort(_('commit failed')) | |
283 if not merge: | |
284 self.transplants.set(n, node) | |
285 self.unlog() | |
286 | |
287 return n, node | |
288 | |
289 def readseries(self): | |
290 nodes = [] | |
291 merges = [] | |
292 cur = nodes | |
293 for line in self.opener('series').read().splitlines(): | |
294 if line.startswith('# Merges'): | |
295 cur = merges | |
296 continue | |
297 cur.append(revlog.bin(line)) | |
298 | |
299 return (nodes, merges) | |
300 | |
301 def saveseries(self, revmap, merges): | |
302 if not revmap: | |
303 return | |
304 | |
305 if not os.path.isdir(self.path): | |
306 os.mkdir(self.path) | |
307 series = self.opener('series', 'w') | |
308 revs = revmap.keys() | |
309 revs.sort() | |
310 for rev in revs: | |
311 series.write(revlog.hex(revmap[rev]) + '\n') | |
312 if merges: | |
313 series.write('# Merges\n') | |
314 for m in merges: | |
315 series.write(revlog.hex(m) + '\n') | |
316 series.close() | |
317 | |
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318 def parselog(self, fp): |
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319 parents = [] |
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320 message = [] |
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321 node = revlog.nullid |
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322 inmsg = False |
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323 for line in fp.read().splitlines(): |
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324 if inmsg: |
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325 message.append(line) |
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326 elif line.startswith('# User '): |
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327 user = line[7:] |
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328 elif line.startswith('# Date '): |
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329 date = line[7:] |
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330 elif line.startswith('# Node ID '): |
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331 node = revlog.bin(line[10:]) |
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332 elif line.startswith('# Parent '): |
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333 parents.append(revlog.bin(line[9:])) |
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334 elif not line.startswith('#'): |
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335 inmsg = True |
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336 message.append(line) |
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337 return (node, user, date, '\n'.join(message), parents) |
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338 |
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339 def log(self, user, date, message, p1, p2, merge=False): |
3714 | 340 '''journal changelog metadata for later recover''' |
341 | |
342 if not os.path.isdir(self.path): | |
343 os.mkdir(self.path) | |
344 fp = self.opener('journal', 'w') | |
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345 fp.write('# User %s\n' % user) |
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346 fp.write('# Date %s\n' % date) |
3714 | 347 fp.write('# Node ID %s\n' % revlog.hex(p2)) |
348 fp.write('# Parent ' + revlog.hex(p1) + '\n') | |
349 if merge: | |
350 fp.write('# Parent ' + revlog.hex(p2) + '\n') | |
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351 fp.write(message.rstrip() + '\n') |
3714 | 352 fp.close() |
353 | |
354 def readlog(self): | |
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355 return self.parselog(self.opener('journal')) |
3714 | 356 |
357 def unlog(self): | |
358 '''remove changelog journal''' | |
359 absdst = os.path.join(self.path, 'journal') | |
360 if os.path.exists(absdst): | |
361 os.unlink(absdst) | |
362 | |
363 def transplantfilter(self, repo, source, root): | |
364 def matchfn(node): | |
365 if self.applied(repo, node, root): | |
366 return False | |
367 if source.changelog.parents(node)[1] != revlog.nullid: | |
368 return False | |
369 extra = source.changelog.read(node)[5] | |
370 cnode = extra.get('transplant_source') | |
371 if cnode and self.applied(repo, cnode, root): | |
372 return False | |
373 return True | |
374 | |
375 return matchfn | |
376 | |
377 def hasnode(repo, node): | |
378 try: | |
379 return repo.changelog.rev(node) != None | |
380 except revlog.RevlogError: | |
381 return False | |
382 | |
383 def browserevs(ui, repo, nodes, opts): | |
384 '''interactively transplant changesets''' | |
385 def browsehelp(ui): | |
386 ui.write('y: transplant this changeset\n' | |
387 'n: skip this changeset\n' | |
388 'm: merge at this changeset\n' | |
389 'p: show patch\n' | |
390 'c: commit selected changesets\n' | |
391 'q: cancel transplant\n' | |
392 '?: show this help\n') | |
393 | |
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394 displayer = cmdutil.show_changeset(ui, repo, opts) |
3714 | 395 transplants = [] |
396 merges = [] | |
397 for node in nodes: | |
398 displayer.show(changenode=node) | |
399 action = None | |
400 while not action: | |
401 action = ui.prompt(_('apply changeset? [ynmpcq?]:')) | |
402 if action == '?': | |
403 browsehelp(ui) | |
404 action = None | |
405 elif action == 'p': | |
406 parent = repo.changelog.parents(node)[0] | |
407 patch.diff(repo, parent, node) | |
408 action = None | |
409 elif action not in ('y', 'n', 'm', 'c', 'q'): | |
410 ui.write('no such option\n') | |
411 action = None | |
412 if action == 'y': | |
413 transplants.append(node) | |
414 elif action == 'm': | |
415 merges.append(node) | |
416 elif action == 'c': | |
417 break | |
418 elif action == 'q': | |
419 transplants = () | |
420 merges = () | |
421 break | |
422 return (transplants, merges) | |
423 | |
424 def transplant(ui, repo, *revs, **opts): | |
425 '''transplant changesets from another branch | |
426 | |
427 Selected changesets will be applied on top of the current working | |
428 directory with the log of the original changeset. If --log is | |
429 specified, log messages will have a comment appended of the form: | |
430 | |
431 (transplanted from CHANGESETHASH) | |
432 | |
433 You can rewrite the changelog message with the --filter option. | |
434 Its argument will be invoked with the current changelog message | |
435 as $1 and the patch as $2. | |
436 | |
437 If --source is specified, selects changesets from the named | |
438 repository. If --branch is specified, selects changesets from the | |
439 branch holding the named revision, up to that revision. If --all | |
440 is specified, all changesets on the branch will be transplanted, | |
441 otherwise you will be prompted to select the changesets you want. | |
442 | |
443 hg transplant --branch REVISION --all will rebase the selected branch | |
444 (up to the named revision) onto your current working directory. | |
445 | |
446 You can optionally mark selected transplanted changesets as | |
447 merge changesets. You will not be prompted to transplant any | |
448 ancestors of a merged transplant, and you can merge descendants | |
449 of them normally instead of transplanting them. | |
450 | |
451 If no merges or revisions are provided, hg transplant will start | |
452 an interactive changeset browser. | |
453 | |
454 If a changeset application fails, you can fix the merge by hand and | |
455 then resume where you left off by calling hg transplant --continue. | |
456 ''' | |
457 def getoneitem(opts, item, errmsg): | |
458 val = opts.get(item) | |
459 if val: | |
460 if len(val) > 1: | |
461 raise util.Abort(errmsg) | |
462 else: | |
463 return val[0] | |
464 | |
465 def getremotechanges(repo, url): | |
466 sourcerepo = ui.expandpath(url) | |
467 source = hg.repository(ui, sourcerepo) | |
468 incoming = repo.findincoming(source, force=True) | |
469 if not incoming: | |
470 return (source, None, None) | |
471 | |
472 bundle = None | |
473 if not source.local(): | |
474 cg = source.changegroup(incoming, 'incoming') | |
475 bundle = commands.write_bundle(cg, compress=False) | |
476 source = bundlerepo.bundlerepository(ui, repo.root, bundle) | |
477 | |
478 return (source, incoming, bundle) | |
479 | |
480 def incwalk(repo, incoming, branches, match=util.always): | |
481 if not branches: | |
482 branches=None | |
483 for node in repo.changelog.nodesbetween(incoming, branches)[0]: | |
484 if match(node): | |
485 yield node | |
486 | |
487 def transplantwalk(repo, root, branches, match=util.always): | |
488 if not branches: | |
489 branches = repo.heads() | |
490 ancestors = [] | |
491 for branch in branches: | |
492 ancestors.append(repo.changelog.ancestor(root, branch)) | |
493 for node in repo.changelog.nodesbetween(ancestors, branches)[0]: | |
494 if match(node): | |
495 yield node | |
496 | |
497 def checkopts(opts, revs): | |
498 if opts.get('continue'): | |
499 if filter(lambda opt: opts.get(opt), ('branch', 'all', 'merge')): | |
500 raise util.Abort(_('--continue is incompatible with branch, all or merge')) | |
501 return | |
502 if not (opts.get('source') or revs or | |
503 opts.get('merge') or opts.get('branch')): | |
504 raise util.Abort(_('no source URL, branch tag or revision list provided')) | |
505 if opts.get('all'): | |
506 if not opts.get('branch'): | |
507 raise util.Abort(_('--all requires a branch revision')) | |
508 if revs: | |
509 raise util.Abort(_('--all is incompatible with a revision list')) | |
510 | |
511 checkopts(opts, revs) | |
512 | |
513 if not opts.get('log'): | |
514 opts['log'] = ui.config('transplant', 'log') | |
515 if not opts.get('filter'): | |
516 opts['filter'] = ui.config('transplant', 'filter') | |
517 | |
518 tp = transplanter(ui, repo) | |
519 | |
520 p1, p2 = repo.dirstate.parents() | |
521 if p1 == revlog.nullid: | |
522 raise util.Abort(_('no revision checked out')) | |
523 if not opts.get('continue'): | |
524 if p2 != revlog.nullid: | |
525 raise util.Abort(_('outstanding uncommitted merges')) | |
526 m, a, r, d = repo.status()[:4] | |
527 if m or a or r or d: | |
528 raise util.Abort(_('outstanding local changes')) | |
529 | |
530 bundle = None | |
531 source = opts.get('source') | |
532 if source: | |
533 (source, incoming, bundle) = getremotechanges(repo, source) | |
534 else: | |
535 source = repo | |
536 | |
537 try: | |
538 if opts.get('continue'): | |
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539 tp.resume(repo, source, opts) |
3714 | 540 return |
541 | |
542 tf=tp.transplantfilter(repo, source, p1) | |
543 if opts.get('prune'): | |
544 prune = [source.lookup(r) | |
545 for r in cmdutil.revrange(source, opts.get('prune'))] | |
546 matchfn = lambda x: tf(x) and x not in prune | |
547 else: | |
548 matchfn = tf | |
549 branches = map(source.lookup, opts.get('branch', ())) | |
550 merges = map(source.lookup, opts.get('merge', ())) | |
551 revmap = {} | |
552 if revs: | |
553 for r in cmdutil.revrange(source, revs): | |
554 revmap[int(r)] = source.lookup(r) | |
555 elif opts.get('all') or not merges: | |
556 if source != repo: | |
557 alltransplants = incwalk(source, incoming, branches, match=matchfn) | |
558 else: | |
559 alltransplants = transplantwalk(source, p1, branches, match=matchfn) | |
560 if opts.get('all'): | |
561 revs = alltransplants | |
562 else: | |
563 revs, newmerges = browserevs(ui, source, alltransplants, opts) | |
564 merges.extend(newmerges) | |
565 for r in revs: | |
566 revmap[source.changelog.rev(r)] = r | |
567 for r in merges: | |
568 revmap[source.changelog.rev(r)] = r | |
569 | |
570 revs = revmap.keys() | |
571 revs.sort() | |
572 pulls = [] | |
573 | |
574 tp.apply(repo, source, revmap, merges, opts) | |
575 finally: | |
576 if bundle: | |
577 os.unlink(bundle) | |
578 | |
579 cmdtable = { | |
580 "transplant": | |
581 (transplant, | |
582 [('s', 'source', '', _('pull patches from REPOSITORY')), | |
583 ('b', 'branch', [], _('pull patches from branch BRANCH')), | |
584 ('a', 'all', None, _('pull all changesets up to BRANCH')), | |
585 ('p', 'prune', [], _('skip over REV')), | |
586 ('m', 'merge', [], _('merge at REV')), | |
587 ('', 'log', None, _('append transplant info to log message')), | |
588 ('c', 'continue', None, _('continue last transplant session after repair')), | |
589 ('', 'filter', '', _('filter changesets through FILTER'))], | |
590 _('hg transplant [-s REPOSITORY] [-b BRANCH] [-p REV] [-m REV] [-n] REV...')) | |
591 } |