Mercurial > hg
view hgext/convert/cvs.py @ 49680:40e24d82b513
delta-find: make sure we only use newer full snapshot as candidate
The current code does not needs to protect against this, as there are no older
snapshot in the current cache. However as we are getting ready to reuse this
cache from one revision to another, we need the code to protect itself about
what's coming.
author | Pierre-Yves David <pierre-yves.david@octobus.net> |
---|---|
date | Sun, 06 Nov 2022 17:55:55 -0500 |
parents | 417a1691a273 |
children | 9282930f8b52 |
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# cvs.py: CVS conversion code inspired by hg-cvs-import and git-cvsimport # # Copyright 2005-2009 Olivia Mackall <olivia@selenic.com> and others # # This software may be used and distributed according to the terms of the # GNU General Public License version 2 or any later version. import errno import os import re import socket from mercurial.i18n import _ from mercurial.pycompat import ( getattr, open, ) from mercurial import ( encoding, error, util, ) from mercurial.utils import ( dateutil, procutil, ) from . import ( common, cvsps, ) stringio = util.stringio checktool = common.checktool commit = common.commit converter_source = common.converter_source makedatetimestamp = common.makedatetimestamp NoRepo = common.NoRepo class convert_cvs(converter_source): def __init__(self, ui, repotype, path, revs=None): super(convert_cvs, self).__init__(ui, repotype, path, revs=revs) cvs = os.path.join(path, b"CVS") if not os.path.exists(cvs): raise NoRepo(_(b"%s does not look like a CVS checkout") % path) checktool(b'cvs') self.changeset = None self.files = {} self.tags = {} self.lastbranch = {} self.socket = None self.cvsroot = open(os.path.join(cvs, b"Root"), b'rb').read()[:-1] self.cvsrepo = open(os.path.join(cvs, b"Repository"), b'rb').read()[:-1] self.encoding = encoding.encoding self._connect() def _parse(self): if self.changeset is not None: return self.changeset = {} maxrev = 0 if self.revs: if len(self.revs) > 1: raise error.Abort( _( b'cvs source does not support specifying ' b'multiple revs' ) ) # TODO: handle tags try: # patchset number? maxrev = int(self.revs[0]) except ValueError: raise error.Abort( _(b'revision %s is not a patchset number') % self.revs[0] ) d = encoding.getcwd() try: os.chdir(self.path) cache = b'update' if not self.ui.configbool(b'convert', b'cvsps.cache'): cache = None db = cvsps.createlog(self.ui, cache=cache) db = cvsps.createchangeset( self.ui, db, fuzz=int(self.ui.config(b'convert', b'cvsps.fuzz')), mergeto=self.ui.config(b'convert', b'cvsps.mergeto'), mergefrom=self.ui.config(b'convert', b'cvsps.mergefrom'), ) for cs in db: if maxrev and cs.id > maxrev: break id = b"%d" % cs.id cs.author = self.recode(cs.author) self.lastbranch[cs.branch] = id cs.comment = self.recode(cs.comment) if self.ui.configbool(b'convert', b'localtimezone'): cs.date = makedatetimestamp(cs.date[0]) date = dateutil.datestr(cs.date, b'%Y-%m-%d %H:%M:%S %1%2') self.tags.update(dict.fromkeys(cs.tags, id)) files = {} for f in cs.entries: files[f.file] = b"%s%s" % ( b'.'.join([(b"%d" % x) for x in f.revision]), [b'', b'(DEAD)'][f.dead], ) # add current commit to set c = commit( author=cs.author, date=date, parents=[(b"%d" % p.id) for p in cs.parents], desc=cs.comment, branch=cs.branch or b'', ) self.changeset[id] = c self.files[id] = files self.heads = self.lastbranch.values() finally: os.chdir(d) def _connect(self): root = self.cvsroot conntype = None user, host = None, None cmd = [b'cvs', b'server'] self.ui.status(_(b"connecting to %s\n") % root) if root.startswith(b":pserver:"): root = root[9:] m = re.match(r'(?:(.*?)(?::(.*?))?@)?([^:/]*)(?::(\d*))?(.*)', root) if m: conntype = b"pserver" user, passw, serv, port, root = m.groups() if not user: user = b"anonymous" if not port: port = 2401 else: port = int(port) format0 = b":pserver:%s@%s:%s" % (user, serv, root) format1 = b":pserver:%s@%s:%d%s" % (user, serv, port, root) if not passw: passw = b"A" cvspass = os.path.expanduser(b"~/.cvspass") try: pf = open(cvspass, b'rb') for line in pf.read().splitlines(): part1, part2 = line.split(b' ', 1) # /1 :pserver:user@example.com:2401/cvsroot/foo # Ah<Z if part1 == b'/1': part1, part2 = part2.split(b' ', 1) format = format1 # :pserver:user@example.com:/cvsroot/foo Ah<Z else: format = format0 if part1 == format: passw = part2 break pf.close() except IOError as inst: if inst.errno != errno.ENOENT: if not getattr(inst, 'filename', None): inst.filename = cvspass raise sck = socket.socket() sck.connect((serv, port)) sck.send( b"\n".join( [ b"BEGIN AUTH REQUEST", root, user, passw, b"END AUTH REQUEST", b"", ] ) ) if sck.recv(128) != b"I LOVE YOU\n": raise error.Abort(_(b"CVS pserver authentication failed")) self.writep = self.readp = sck.makefile(b'r+') if not conntype and root.startswith(b":local:"): conntype = b"local" root = root[7:] if not conntype: # :ext:user@host/home/user/path/to/cvsroot if root.startswith(b":ext:"): root = root[5:] m = re.match(br'(?:([^@:/]+)@)?([^:/]+):?(.*)', root) # Do not take Windows path "c:\foo\bar" for a connection strings if os.path.isdir(root) or not m: conntype = b"local" else: conntype = b"rsh" user, host, root = m.group(1), m.group(2), m.group(3) if conntype != b"pserver": if conntype == b"rsh": rsh = encoding.environ.get(b"CVS_RSH") or b"ssh" if user: cmd = [rsh, b'-l', user, host] + cmd else: cmd = [rsh, host] + cmd # popen2 does not support argument lists under Windows cmd = b' '.join(procutil.shellquote(arg) for arg in cmd) self.writep, self.readp = procutil.popen2(cmd) self.realroot = root self.writep.write(b"Root %s\n" % root) self.writep.write( b"Valid-responses ok error Valid-requests Mode" b" M Mbinary E Checked-in Created Updated" b" Merged Removed\n" ) self.writep.write(b"valid-requests\n") self.writep.flush() r = self.readp.readline() if not r.startswith(b"Valid-requests"): raise error.Abort( _( b'unexpected response from CVS server ' b'(expected "Valid-requests", but got %r)' ) % r ) if b"UseUnchanged" in r: self.writep.write(b"UseUnchanged\n") self.writep.flush() self.readp.readline() def getheads(self): self._parse() return self.heads def getfile(self, name, rev): def chunkedread(fp, count): # file-objects returned by socket.makefile() do not handle # large read() requests very well. chunksize = 65536 output = stringio() while count > 0: data = fp.read(min(count, chunksize)) if not data: raise error.Abort( _(b"%d bytes missing from remote file") % count ) count -= len(data) output.write(data) return output.getvalue() self._parse() if rev.endswith(b"(DEAD)"): return None, None args = (b"-N -P -kk -r %s --" % rev).split() args.append(self.cvsrepo + b'/' + name) for x in args: self.writep.write(b"Argument %s\n" % x) self.writep.write(b"Directory .\n%s\nco\n" % self.realroot) self.writep.flush() data = b"" mode = None while True: line = self.readp.readline() if line.startswith(b"Created ") or line.startswith(b"Updated "): self.readp.readline() # path self.readp.readline() # entries mode = self.readp.readline()[:-1] count = int(self.readp.readline()[:-1]) data = chunkedread(self.readp, count) elif line.startswith(b" "): data += line[1:] elif line.startswith(b"M "): pass elif line.startswith(b"Mbinary "): count = int(self.readp.readline()[:-1]) data = chunkedread(self.readp, count) else: if line == b"ok\n": if mode is None: raise error.Abort(_(b'malformed response from CVS')) return (data, b"x" in mode and b"x" or b"") elif line.startswith(b"E "): self.ui.warn(_(b"cvs server: %s\n") % line[2:]) elif line.startswith(b"Remove"): self.readp.readline() else: raise error.Abort(_(b"unknown CVS response: %s") % line) def getchanges(self, rev, full): if full: raise error.Abort(_(b"convert from cvs does not support --full")) self._parse() return sorted(self.files[rev].items()), {}, set() def getcommit(self, rev): self._parse() return self.changeset[rev] def gettags(self): self._parse() return self.tags def getchangedfiles(self, rev, i): self._parse() return sorted(self.files[rev])