Mercurial > hg
view mercurial/repair.py @ 6034:83633602e2c5
qinit -c: add ^\.hg and ^\.mq to .hgignore
author | Alexis S. L. Carvalho <alexis@cecm.usp.br> |
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date | Fri, 08 Feb 2008 18:07:55 -0200 |
parents | 18e91c9def0c |
children | 52cfe86ebe55 |
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# repair.py - functions for repository repair for mercurial # # Copyright 2005, 2006 Chris Mason <mason@suse.com> # Copyright 2007 Matt Mackall # # This software may be used and distributed according to the terms # of the GNU General Public License, incorporated herein by reference. import changegroup, revlog, os, commands def strip(ui, repo, rev, backup="all"): def limitheads(chlog, stop): """return the list of all nodes that have no children""" p = {} h = [] stoprev = 0 if stop in chlog.nodemap: stoprev = chlog.rev(stop) for r in xrange(chlog.count() - 1, -1, -1): n = chlog.node(r) if n not in p: h.append(n) if n == stop: break if r < stoprev: break for pn in chlog.parents(n): p[pn] = 1 return h def bundle(repo, bases, heads, rev, suffix): cg = repo.changegroupsubset(bases, heads, 'strip') backupdir = repo.join("strip-backup") if not os.path.isdir(backupdir): os.mkdir(backupdir) name = os.path.join(backupdir, "%s-%s" % (revlog.short(rev), suffix)) ui.warn("saving bundle to %s\n" % name) return changegroup.writebundle(cg, name, "HG10BZ") def stripall(revnum): mm = repo.changectx(rev).manifest() seen = {} for x in xrange(revnum, repo.changelog.count()): for f in repo.changectx(x).files(): if f in seen: continue seen[f] = 1 if f in mm: filerev = mm[f] else: filerev = 0 seen[f] = filerev # we go in two steps here so the strip loop happens in a # sensible order. When stripping many files, this helps keep # our disk access patterns under control. seen_list = seen.keys() seen_list.sort() for f in seen_list: ff = repo.file(f) filerev = seen[f] if filerev != 0: if filerev in ff.nodemap: filerev = ff.rev(filerev) else: filerev = 0 ff.strip(filerev, revnum) chlog = repo.changelog # TODO delete the undo files, and handle undo of merge sets pp = chlog.parents(rev) revnum = chlog.rev(rev) # save is a list of all the branches we are truncating away # that we actually want to keep. changegroup will be used # to preserve them and add them back after the truncate saveheads = [] savebases = {} heads = limitheads(chlog, rev) seen = {} # search through all the heads, finding those where the revision # we want to strip away is an ancestor. Also look for merges # that might be turned into new heads by the strip. while heads: h = heads.pop() n = h while True: seen[n] = 1 pp = chlog.parents(n) if pp[1] != revlog.nullid: for p in pp: if chlog.rev(p) > revnum and p not in seen: heads.append(p) if pp[0] == revlog.nullid: break if chlog.rev(pp[0]) < revnum: break n = pp[0] if n == rev: break r = chlog.reachable(h, rev) if rev not in r: saveheads.append(h) for x in r: if chlog.rev(x) > revnum: savebases[x] = 1 # create a changegroup for all the branches we need to keep if backup == "all": bundle(repo, [rev], chlog.heads(), rev, 'backup') if saveheads: chgrpfile = bundle(repo, savebases.keys(), saveheads, rev, 'temp') stripall(revnum) change = chlog.read(rev) chlog.strip(revnum, revnum) repo.manifest.strip(repo.manifest.rev(change[0]), revnum) if saveheads: ui.status("adding branch\n") commands.unbundle(ui, repo, "file:%s" % chgrpfile, update=False) if backup != "strip": os.unlink(chgrpfile)