# hg backend for convert extension
# Notes for hg->hg conversion:
#
# * Old versions of Mercurial didn't trim the whitespace from the ends
# of commit messages, but new versions do. Changesets created by
# those older versions, then converted, may thus have different
# hashes for changesets that are otherwise identical.
#
# * By default, the source revision is stored in the converted
# revision. This will cause the converted revision to have a
# different identity than the source. To avoid this, use the
# following option: "--config convert.hg.saverev=false"
import os, time
from mercurial.i18n import _
from mercurial.repo import RepoError
from mercurial.node import bin, hex, nullid
from mercurial import hg, revlog, util, context
from common import NoRepo, commit, converter_source, converter_sink
class mercurial_sink(converter_sink):
def __init__(self, ui, path):
converter_sink.__init__(self, ui, path)
self.branchnames = ui.configbool('convert', 'hg.usebranchnames', True)
self.clonebranches = ui.configbool('convert', 'hg.clonebranches', False)
self.tagsbranch = ui.config('convert', 'hg.tagsbranch', 'default')
self.lastbranch = None
if os.path.isdir(path) and len(os.listdir(path)) > 0:
try:
self.repo = hg.repository(self.ui, path)
if not self.repo.local():
raise NoRepo(_('%s is not a local Mercurial repo') % path)
except RepoError, err:
ui.print_exc()
raise NoRepo(err.args[0])
else:
try:
ui.status(_('initializing destination %s repository\n') % path)
self.repo = hg.repository(self.ui, path, create=True)
if not self.repo.local():
raise NoRepo(_('%s is not a local Mercurial repo') % path)
self.created.append(path)
except RepoError, err:
ui.print_exc()
raise NoRepo("could not create hg repo %s as sink" % path)
self.lock = None
self.wlock = None
self.filemapmode = False
def before(self):
self.ui.debug(_('run hg sink pre-conversion action\n'))
self.wlock = self.repo.wlock()
self.lock = self.repo.lock()
def after(self):
self.ui.debug(_('run hg sink post-conversion action\n'))
self.lock = None
self.wlock = None
def revmapfile(self):
return os.path.join(self.path, ".hg", "shamap")
def authorfile(self):
return os.path.join(self.path, ".hg", "authormap")
def getheads(self):
h = self.repo.changelog.heads()
return [ hex(x) for x in h ]
def setbranch(self, branch, pbranches):
if not self.clonebranches:
return
setbranch = (branch != self.lastbranch)
self.lastbranch = branch
if not branch:
branch = 'default'
pbranches = [(b[0], b[1] and b[1] or 'default') for b in pbranches]
pbranch = pbranches and pbranches[0][1] or 'default'
branchpath = os.path.join(self.path, branch)
if setbranch:
self.after()
try:
self.repo = hg.repository(self.ui, branchpath)
except:
self.repo = hg.repository(self.ui, branchpath, create=True)
self.before()
# pbranches may bring revisions from other branches (merge parents)
# Make sure we have them, or pull them.
missings = {}
for b in pbranches:
try:
self.repo.lookup(b[0])
except:
missings.setdefault(b[1], []).append(b[0])
if missings:
self.after()
for pbranch, heads in missings.iteritems():
pbranchpath = os.path.join(self.path, pbranch)
prepo = hg.repository(self.ui, pbranchpath)
self.ui.note(_('pulling from %s into %s\n') % (pbranch, branch))
self.repo.pull(prepo, [prepo.lookup(h) for h in heads])
self.before()
def putcommit(self, files, copies, parents, commit, source):
files = dict(files)
def getfilectx(repo, memctx, f):
v = files[f]
data = source.getfile(f, v)
e = source.getmode(f, v)
return context.memfilectx(f, data, 'l' in e, 'x' in e, copies.get(f))
pl = []
for p in parents:
if p not in pl:
pl.append(p)
parents = pl
nparents = len(parents)
if self.filemapmode and nparents == 1:
m1node = self.repo.changelog.read(bin(parents[0]))[0]
parent = parents[0]
if len(parents) < 2: parents.append("0" * 40)
if len(parents) < 2: parents.append("0" * 40)
p2 = parents.pop(0)
text = commit.desc
extra = commit.extra.copy()
if self.branchnames and commit.branch:
extra['branch'] = commit.branch
if commit.rev:
extra['convert_revision'] = commit.rev
while parents:
p1 = p2
p2 = parents.pop(0)
ctx = context.memctx(self.repo, (p1, p2), text, files.keys(), getfilectx,
commit.author, commit.date, extra)
a = self.repo.commitctx(ctx)
text = "(octopus merge fixup)\n"
p2 = hex(self.repo.changelog.tip())
if self.filemapmode and nparents == 1:
man = self.repo.manifest
mnode = self.repo.changelog.read(bin(p2))[0]
if not man.cmp(m1node, man.revision(mnode)):
self.repo.rollback()
return parent
return p2
def puttags(self, tags):
try:
parentctx = self.repo[self.tagsbranch]
tagparent = parentctx.node()
except RepoError, inst:
parentctx = None
tagparent = nullid
try:
old = parentctx.filectx(".hgtags").data()
oldlines = old.splitlines(1)
oldlines.sort()
except:
oldlines = []
newlines = [("%s %s\n" % (tags[tag], tag)) for tag in tags.keys()]
newlines.sort()
if newlines == oldlines:
return None
data = "".join(newlines)
def getfilectx(repo, memctx, f):
return context.memfilectx(f, data, False, False, None)
self.ui.status("updating tags\n")
date = "%s 0" % int(time.mktime(time.gmtime()))
extra = {'branch': self.tagsbranch}
ctx = context.memctx(self.repo, (tagparent, None), "update tags",
[".hgtags"], getfilectx, "convert-repo", date,
extra)
self.repo.commitctx(ctx)
return hex(self.repo.changelog.tip())
def setfilemapmode(self, active):
self.filemapmode = active
class mercurial_source(converter_source):
def __init__(self, ui, path, rev=None):
converter_source.__init__(self, ui, path, rev)
self.saverev = ui.configbool('convert', 'hg.saverev', True)
try:
self.repo = hg.repository(self.ui, path)
# try to provoke an exception if this isn't really a hg
# repo, but some other bogus compatible-looking url
if not self.repo.local():
raise RepoError()
except RepoError:
ui.print_exc()
raise NoRepo("%s is not a local Mercurial repo" % path)
self.lastrev = None
self.lastctx = None
self._changescache = None
self.convertfp = None
def changectx(self, rev):
if self.lastrev != rev:
self.lastctx = self.repo[rev]
self.lastrev = rev
return self.lastctx
def getheads(self):
if self.rev:
return [hex(self.repo[self.rev].node())]
else:
return [hex(node) for node in self.repo.heads()]
def getfile(self, name, rev):
try:
return self.changectx(rev)[name].data()
except revlog.LookupError, err:
raise IOError(err)
def getmode(self, name, rev):
m = self.changectx(rev).manifest()
return (m.execf(name) and 'x' or '') + (m.linkf(name) and 'l' or '')
def getchanges(self, rev):
ctx = self.changectx(rev)
if self._changescache and self._changescache[0] == rev:
m, a, r = self._changescache[1]
else:
m, a, r = self.repo.status(ctx.parents()[0].node(), ctx.node())[:3]
changes = [(name, rev) for name in m + a + r]
changes.sort()
return (changes, self.getcopies(ctx, m + a))
def getcopies(self, ctx, files):
copies = {}
for name in files:
try:
copies[name] = ctx.filectx(name).renamed()[0]
except TypeError:
pass
return copies
def getcommit(self, rev):
ctx = self.changectx(rev)
parents = [hex(p.node()) for p in ctx.parents() if p.node() != nullid]
if self.saverev:
crev = rev
else:
crev = None
return commit(author=ctx.user(), date=util.datestr(ctx.date()),
desc=ctx.description(), rev=crev, parents=parents,
branch=ctx.branch(), extra=ctx.extra())
def gettags(self):
tags = [t for t in self.repo.tagslist() if t[0] != 'tip']
return dict([(name, hex(node)) for name, node in tags])
def getchangedfiles(self, rev, i):
ctx = self.changectx(rev)
i = i or 0
changes = self.repo.status(ctx.parents()[i].node(), ctx.node())[:3]
if i == 0:
self._changescache = (rev, changes)
return changes[0] + changes[1] + changes[2]
def converted(self, rev, destrev):
if self.convertfp is None:
self.convertfp = open(os.path.join(self.path, '.hg', 'shamap'),
'a')
self.convertfp.write('%s %s\n' % (destrev, rev))
self.convertfp.flush()
def before(self):
self.ui.debug(_('run hg source pre-conversion action\n'))
def after(self):
self.ui.debug(_('run hg source post-conversion action\n'))