author | Pierre-Yves David <pierre-yves.david@logilab.fr> |
Mon, 17 Dec 2012 17:12:02 +0100 | |
changeset 18102 | 3c7b67b76190 |
parent 18040 | fe8caf28d580 |
child 18121 | f8a13f061a8a |
permissions | -rw-r--r-- |
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# repair.py - functions for repository repair for mercurial |
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# |
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# Copyright 2005, 2006 Chris Mason <mason@suse.com> |
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# Copyright 2007 Matt Mackall |
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# |
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# This software may be used and distributed according to the terms of the |
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# GNU General Public License version 2 or any later version. |
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from mercurial import changegroup |
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from mercurial.node import short |
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from mercurial.i18n import _ |
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import os |
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import errno |
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def _bundle(repo, bases, heads, node, suffix, compress=True): |
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"""create a bundle with the specified revisions as a backup""" |
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cg = repo.changegroupsubset(bases, heads, 'strip') |
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backupdir = repo.join("strip-backup") |
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if not os.path.isdir(backupdir): |
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os.mkdir(backupdir) |
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name = os.path.join(backupdir, "%s-%s.hg" % (short(node), suffix)) |
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if compress: |
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bundletype = "HG10BZ" |
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else: |
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bundletype = "HG10UN" |
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return changegroup.writebundle(cg, name, bundletype) |
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def _collectfiles(repo, striprev): |
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"""find out the filelogs affected by the strip""" |
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files = set() |
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for x in xrange(striprev, len(repo)): |
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files.update(repo[x].files()) |
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return sorted(files) |
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def _collectbrokencsets(repo, files, striprev): |
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"""return the changesets which will be broken by the truncation""" |
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s = set() |
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def collectone(revlog): |
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linkgen = (revlog.linkrev(i) for i in revlog) |
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# find the truncation point of the revlog |
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for lrev in linkgen: |
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if lrev >= striprev: |
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break |
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# see if any revision after this point has a linkrev |
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# less than striprev (those will be broken by strip) |
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for lrev in linkgen: |
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if lrev < striprev: |
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s.add(lrev) |
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collectone(repo.manifest) |
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for fname in files: |
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collectone(repo.file(fname)) |
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return s |
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def strip(ui, repo, nodelist, backup="all", topic='backup'): |
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repo = repo.unfiltered() |
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# It simplifies the logic around updating the branchheads cache if we only |
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# have to consider the effect of the stripped revisions and not revisions |
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# missing because the cache is out-of-date. |
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repo.updatebranchcache() |
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cl = repo.changelog |
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# TODO handle undo of merge sets |
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if isinstance(nodelist, str): |
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nodelist = [nodelist] |
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striplist = [cl.rev(node) for node in nodelist] |
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striprev = min(striplist) |
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# Generate set of branches who will have nodes stripped. |
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striprevs = repo.revs("%ld::", striplist) |
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stripbranches = set([repo[rev].branch() for rev in striprevs]) |
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# Set of potential new heads resulting from the strip. The parents of any |
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# node removed could be a new head because the node to be removed could have |
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# been the only child of the parent. |
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newheadrevs = repo.revs("parents(%ld::) - %ld::", striprevs, striprevs) |
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newheadnodes = set([cl.node(rev) for rev in newheadrevs]) |
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newheadbranches = set([repo[rev].branch() for rev in newheadrevs]) |
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keeppartialbundle = backup == 'strip' |
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# Some revisions with rev > striprev may not be descendants of striprev. |
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# We have to find these revisions and put them in a bundle, so that |
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# we can restore them after the truncations. |
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# To create the bundle we use repo.changegroupsubset which requires |
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# the list of heads and bases of the set of interesting revisions. |
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# (head = revision in the set that has no descendant in the set; |
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# base = revision in the set that has no ancestor in the set) |
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tostrip = set(striplist) |
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for rev in striplist: |
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for desc in cl.descendants([rev]): |
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tostrip.add(desc) |
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files = _collectfiles(repo, striprev) |
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saverevs = _collectbrokencsets(repo, files, striprev) |
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# compute heads |
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saveheads = set(saverevs) |
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for r in xrange(striprev + 1, len(cl)): |
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if r not in tostrip: |
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saverevs.add(r) |
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saveheads.difference_update(cl.parentrevs(r)) |
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saveheads.add(r) |
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saveheads = [cl.node(r) for r in saveheads] |
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108 |
|
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109 |
# compute base nodes |
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|
110 |
if saverevs: |
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|
111 |
descendants = set(cl.descendants(saverevs)) |
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|
112 |
saverevs.difference_update(descendants) |
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|
113 |
savebases = [cl.node(r) for r in saverevs] |
16252
cf17e76be4dd
strip: enhance repair.strip to receive a list of nodes (issue3299)
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|
114 |
stripbases = [cl.node(r) for r in tostrip] |
18040
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|
115 |
|
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|
116 |
# For a set s, max(parents(s) - s) is the same as max(heads(::s - s)), but |
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|
117 |
# is much faster |
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|
118 |
newbmtarget = repo.revs('max(parents(%ld) - (%ld))', tostrip, tostrip) |
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|
119 |
if newbmtarget: |
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repair: use node to track post-strip bookmark target
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120 |
newbmtarget = repo[newbmtarget[0]].node() |
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|
121 |
else: |
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|
122 |
newbmtarget = '.' |
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|
123 |
|
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|
124 |
bm = repo._bookmarks |
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|
125 |
updatebm = [] |
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|
126 |
for m in bm: |
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|
127 |
rev = repo[bm[m]].rev() |
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|
128 |
if rev in tostrip: |
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|
129 |
updatebm.append(m) |
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|
130 |
|
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|
131 |
# create a changegroup for all the branches we need to keep |
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132 |
backupfile = None |
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|
133 |
if backup == "all": |
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repair: allow giving strip backup a different name
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parents:
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|
134 |
backupfile = _bundle(repo, stripbases, cl.heads(), node, topic) |
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|
135 |
repo.ui.status(_("saved backup bundle to %s\n") % backupfile) |
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|
136 |
if saveheads or savebases: |
11791
00cde9bddbe4
repair: do not compress partial bundle if we do not keep it on disk
Nicolas Dumazet <nicdumz.commits@gmail.com>
parents:
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|
137 |
# do not compress partial bundle if we remove it from disk later |
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|
138 |
chgrpfile = _bundle(repo, savebases, saveheads, node, 'temp', |
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|
139 |
compress=keeppartialbundle) |
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|
140 |
|
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parents:
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|
141 |
mfst = repo.manifest |
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changeset
|
142 |
|
10881
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localrepo: add desc parameter to transaction
Steve Borho <steve@borho.org>
parents:
10263
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changeset
|
143 |
tr = repo.transaction("strip") |
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|
144 |
offset = len(tr.entries) |
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|
145 |
|
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|
146 |
try: |
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|
147 |
tr.startgroup() |
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|
148 |
cl.strip(striprev, tr) |
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|
149 |
mfst.strip(striprev, tr) |
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|
150 |
for fn in files: |
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|
151 |
repo.file(fn).strip(striprev, tr) |
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|
152 |
tr.endgroup() |
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|
153 |
|
11197
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|
154 |
try: |
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|
155 |
for i in xrange(offset, len(tr.entries)): |
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|
156 |
file, troffset, ignore = tr.entries[i] |
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changeset
|
157 |
repo.sopener(file, 'a').truncate(troffset) |
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changeset
|
158 |
tr.close() |
16705
c2d9ef43ff6c
check-code: ignore naked excepts with a "re-raise" comment
Brodie Rao <brodie@sf.io>
parents:
16628
diff
changeset
|
159 |
except: # re-raises |
11197
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|
160 |
tr.abort() |
4bb4895e1693
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changeset
|
161 |
raise |
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changeset
|
162 |
|
15386
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changeset
|
163 |
if saveheads or savebases: |
11202
f974fe896921
strip: hide unbundle messages by default
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parents:
11200
diff
changeset
|
164 |
ui.note(_("adding branch\n")) |
11197
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|
165 |
f = open(chgrpfile, "rb") |
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|
166 |
gen = changegroup.readbundle(f, chgrpfile) |
11202
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parents:
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changeset
|
167 |
if not repo.ui.verbose: |
f974fe896921
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parents:
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diff
changeset
|
168 |
# silence internal shuffling chatter |
f974fe896921
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changeset
|
169 |
repo.ui.pushbuffer() |
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|
170 |
repo.addchangegroup(gen, 'strip', 'bundle:' + chgrpfile, True) |
11202
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parents:
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changeset
|
171 |
if not repo.ui.verbose: |
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changeset
|
172 |
repo.ui.popbuffer() |
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changeset
|
173 |
f.close() |
11791
00cde9bddbe4
repair: do not compress partial bundle if we do not keep it on disk
Nicolas Dumazet <nicdumz.commits@gmail.com>
parents:
11600
diff
changeset
|
174 |
if not keeppartialbundle: |
11197
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|
175 |
os.unlink(chgrpfile) |
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changeset
|
176 |
|
16237
b5c0c7d0f83f
repair: remove undo files after strip
Idan Kamara <idankk86@gmail.com>
parents:
15901
diff
changeset
|
177 |
# remove undo files |
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parents:
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changeset
|
178 |
for undofile in repo.undofiles(): |
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parents:
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changeset
|
179 |
try: |
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parents:
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changeset
|
180 |
os.unlink(undofile) |
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parents:
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changeset
|
181 |
except OSError, e: |
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parents:
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changeset
|
182 |
if e.errno != errno.ENOENT: |
b5c0c7d0f83f
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Idan Kamara <idankk86@gmail.com>
parents:
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diff
changeset
|
183 |
ui.warn(_('error removing %s: %s\n') % (undofile, str(e))) |
b5c0c7d0f83f
repair: remove undo files after strip
Idan Kamara <idankk86@gmail.com>
parents:
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diff
changeset
|
184 |
|
13362
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Matt Mackall <mpm@selenic.com>
parents:
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changeset
|
185 |
for m in updatebm: |
17264
ec7b9bec19c9
strip: move bookmarks to nearest ancestor rather than '.'
Augie Fackler <raf@durin42.com>
parents:
17013
diff
changeset
|
186 |
bm[m] = repo[newbmtarget].node() |
17922
7f5dab94e48c
bookmarks: introduce a bmstore to manage bookmark persistence
Augie Fackler <raf@durin42.com>
parents:
17796
diff
changeset
|
187 |
bm.write() |
16705
c2d9ef43ff6c
check-code: ignore naked excepts with a "re-raise" comment
Brodie Rao <brodie@sf.io>
parents:
16628
diff
changeset
|
188 |
except: # re-raises |
11197
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parents:
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changeset
|
189 |
if backupfile: |
11600
76454cbc11e4
mark ui.warn strings for translation
Martin Geisler <mg@lazybytes.net>
parents:
11333
diff
changeset
|
190 |
ui.warn(_("strip failed, full bundle stored in '%s'\n") |
76454cbc11e4
mark ui.warn strings for translation
Martin Geisler <mg@lazybytes.net>
parents:
11333
diff
changeset
|
191 |
% backupfile) |
11197
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parents:
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changeset
|
192 |
elif saveheads: |
11600
76454cbc11e4
mark ui.warn strings for translation
Martin Geisler <mg@lazybytes.net>
parents:
11333
diff
changeset
|
193 |
ui.warn(_("strip failed, partial bundle stored in '%s'\n") |
11197
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parents:
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changeset
|
194 |
% chgrpfile) |
8073
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strip: make repair.strip transactional to avoid repository corruption
Henrik Stuart <henrik.stuart@edlund.dk>
parents:
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changeset
|
195 |
raise |
4702
18e91c9def0c
strip: move strip code to a new repair module
Matt Mackall <mpm@selenic.com>
parents:
diff
changeset
|
196 |
|
17013
c8eda7bbdcab
strip: incrementally update the branchheads cache after a strip
Joshua Redstone <joshua.redstone@fb.com>
parents:
16867
diff
changeset
|
197 |
if len(stripbranches) == 1 and len(newheadbranches) == 1 \ |
c8eda7bbdcab
strip: incrementally update the branchheads cache after a strip
Joshua Redstone <joshua.redstone@fb.com>
parents:
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diff
changeset
|
198 |
and stripbranches == newheadbranches: |
c8eda7bbdcab
strip: incrementally update the branchheads cache after a strip
Joshua Redstone <joshua.redstone@fb.com>
parents:
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changeset
|
199 |
repo.destroyed(newheadnodes) |
c8eda7bbdcab
strip: incrementally update the branchheads cache after a strip
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changeset
|
200 |
else: |
c8eda7bbdcab
strip: incrementally update the branchheads cache after a strip
Joshua Redstone <joshua.redstone@fb.com>
parents:
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changeset
|
201 |
# Multiple branches involved in strip. Will allow branchcache to become |
c8eda7bbdcab
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parents:
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changeset
|
202 |
# invalid and later on rebuilt from scratch |
c8eda7bbdcab
strip: incrementally update the branchheads cache after a strip
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parents:
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changeset
|
203 |
repo.destroyed() |