Mercurial > hg
view hgext/convert/subversion.py @ 47084:27f1191b1305
sidedata: replace sidedata upgrade mechanism with the new one
Note: this is split into a separate change (like some other patches in this
series) because it's not easy to have all patches work 100% and this seemed
easier for reviewers.
When cloning or upgrading a repo, we may need to compute (or remove) sidedata.
This is the same mechanism that is used in exchange, so we re-use the new
system to simplify the code and fix the remaining issues (correctly dropping
flags and handling partial removal, etc.).
This also highlighted an issue with `test-copies-in-changeset.t` that kept
sidedata categories that are not relevant anymore. They should probably be
dropped entirely, but that would be for another patch.
Differential Revision: https://phab.mercurial-scm.org/D10359
author | Raphaël Gomès <rgomes@octobus.net> |
---|---|
date | Mon, 19 Apr 2021 11:22:24 +0200 |
parents | 7525e77b5eac |
children | f38bf44e077f |
line wrap: on
line source
# Subversion 1.4/1.5 Python API backend # # Copyright(C) 2007 Daniel Holth et al from __future__ import absolute_import import codecs import locale import os import re import xml.dom.minidom from mercurial.i18n import _ from mercurial.pycompat import open from mercurial import ( encoding, error, pycompat, util, vfs as vfsmod, ) from mercurial.utils import ( dateutil, procutil, stringutil, ) from . import common pickle = util.pickle stringio = util.stringio propertycache = util.propertycache urlerr = util.urlerr urlreq = util.urlreq commandline = common.commandline commit = common.commit converter_sink = common.converter_sink converter_source = common.converter_source decodeargs = common.decodeargs encodeargs = common.encodeargs makedatetimestamp = common.makedatetimestamp mapfile = common.mapfile MissingTool = common.MissingTool NoRepo = common.NoRepo # Subversion stuff. Works best with very recent Python SVN bindings # e.g. SVN 1.5 or backports. Thanks to the bzr folks for enhancing # these bindings. try: import svn import svn.client import svn.core import svn.ra import svn.delta from . import transport import warnings warnings.filterwarnings( 'ignore', module='svn.core', category=DeprecationWarning ) svn.core.SubversionException # trigger import to catch error except ImportError: svn = None # In Subversion, paths and URLs are Unicode (encoded as UTF-8), which # Subversion converts from / to native strings when interfacing with the OS. # When passing paths and URLs to Subversion, we have to recode them such that # it roundstrips with what Subversion is doing. fsencoding = None def init_fsencoding(): global fsencoding, fsencoding_is_utf8 if fsencoding is not None: return if pycompat.iswindows: # On Windows, filenames are Unicode, but we store them using the MBCS # encoding. fsencoding = 'mbcs' else: # This is the encoding used to convert UTF-8 back to natively-encoded # strings in Subversion 1.14.0 or earlier with APR 1.7.0 or earlier. with util.with_lc_ctype(): fsencoding = locale.nl_langinfo(locale.CODESET) or 'ISO-8859-1' fsencoding = codecs.lookup(fsencoding).name fsencoding_is_utf8 = fsencoding == codecs.lookup('utf-8').name def fs2svn(s): if fsencoding_is_utf8: return s else: return s.decode(fsencoding).encode('utf-8') def formatsvndate(date): return dateutil.datestr(date, b'%Y-%m-%dT%H:%M:%S.000000Z') def parsesvndate(s): # Example SVN datetime. Includes microseconds. # ISO-8601 conformant # '2007-01-04T17:35:00.902377Z' return dateutil.parsedate(s[:19] + b' UTC', [b'%Y-%m-%dT%H:%M:%S']) class SvnPathNotFound(Exception): pass def revsplit(rev): """Parse a revision string and return (uuid, path, revnum). >>> revsplit(b'svn:a2147622-4a9f-4db4-a8d3-13562ff547b2' ... b'/proj%20B/mytrunk/mytrunk@1') ('a2147622-4a9f-4db4-a8d3-13562ff547b2', '/proj%20B/mytrunk/mytrunk', 1) >>> revsplit(b'svn:8af66a51-67f5-4354-b62c-98d67cc7be1d@1') ('', '', 1) >>> revsplit(b'@7') ('', '', 7) >>> revsplit(b'7') ('', '', 0) >>> revsplit(b'bad') ('', '', 0) """ parts = rev.rsplit(b'@', 1) revnum = 0 if len(parts) > 1: revnum = int(parts[1]) parts = parts[0].split(b'/', 1) uuid = b'' mod = b'' if len(parts) > 1 and parts[0].startswith(b'svn:'): uuid = parts[0][4:] mod = b'/' + parts[1] return uuid, mod, revnum def quote(s): # As of svn 1.7, many svn calls expect "canonical" paths. In # theory, we should call svn.core.*canonicalize() on all paths # before passing them to the API. Instead, we assume the base url # is canonical and copy the behaviour of svn URL encoding function # so we can extend it safely with new components. The "safe" # characters were taken from the "svn_uri__char_validity" table in # libsvn_subr/path.c. return urlreq.quote(s, b"!$&'()*+,-./:=@_~") def geturl(path): """Convert path or URL to a SVN URL, encoded in UTF-8. This can raise UnicodeDecodeError if the path or URL can't be converted to unicode using `fsencoding`. """ try: return svn.client.url_from_path( svn.core.svn_path_canonicalize(fs2svn(path)) ) except svn.core.SubversionException: # svn.client.url_from_path() fails with local repositories pass if os.path.isdir(path): path = os.path.normpath(os.path.abspath(path)) if pycompat.iswindows: path = b'/' + util.normpath(path) # Module URL is later compared with the repository URL returned # by svn API, which is UTF-8. path = fs2svn(path) path = b'file://%s' % quote(path) return svn.core.svn_path_canonicalize(path) def optrev(number): optrev = svn.core.svn_opt_revision_t() optrev.kind = svn.core.svn_opt_revision_number optrev.value.number = number return optrev class changedpath(object): def __init__(self, p): self.copyfrom_path = p.copyfrom_path self.copyfrom_rev = p.copyfrom_rev self.action = p.action def get_log_child( fp, url, paths, start, end, limit=0, discover_changed_paths=True, strict_node_history=False, ): protocol = -1 def receiver(orig_paths, revnum, author, date, message, pool): paths = {} if orig_paths is not None: for k, v in pycompat.iteritems(orig_paths): paths[k] = changedpath(v) pickle.dump((paths, revnum, author, date, message), fp, protocol) try: # Use an ra of our own so that our parent can consume # our results without confusing the server. t = transport.SvnRaTransport(url=url) svn.ra.get_log( t.ra, paths, start, end, limit, discover_changed_paths, strict_node_history, receiver, ) except IOError: # Caller may interrupt the iteration pickle.dump(None, fp, protocol) except Exception as inst: pickle.dump(stringutil.forcebytestr(inst), fp, protocol) else: pickle.dump(None, fp, protocol) fp.flush() # With large history, cleanup process goes crazy and suddenly # consumes *huge* amount of memory. The output file being closed, # there is no need for clean termination. os._exit(0) def debugsvnlog(ui, **opts): """Fetch SVN log in a subprocess and channel them back to parent to avoid memory collection issues. """ with util.with_lc_ctype(): if svn is None: raise error.Abort( _(b'debugsvnlog could not load Subversion python bindings') ) args = decodeargs(ui.fin.read()) get_log_child(ui.fout, *args) class logstream(object): """Interruptible revision log iterator.""" def __init__(self, stdout): self._stdout = stdout def __iter__(self): while True: try: entry = pickle.load(self._stdout) except EOFError: raise error.Abort( _( b'Mercurial failed to run itself, check' b' hg executable is in PATH' ) ) try: orig_paths, revnum, author, date, message = entry except (TypeError, ValueError): if entry is None: break raise error.Abort(_(b"log stream exception '%s'") % entry) yield entry def close(self): if self._stdout: self._stdout.close() self._stdout = None class directlogstream(list): """Direct revision log iterator. This can be used for debugging and development but it will probably leak memory and is not suitable for real conversions.""" def __init__( self, url, paths, start, end, limit=0, discover_changed_paths=True, strict_node_history=False, ): def receiver(orig_paths, revnum, author, date, message, pool): paths = {} if orig_paths is not None: for k, v in pycompat.iteritems(orig_paths): paths[k] = changedpath(v) self.append((paths, revnum, author, date, message)) # Use an ra of our own so that our parent can consume # our results without confusing the server. t = transport.SvnRaTransport(url=url) svn.ra.get_log( t.ra, paths, start, end, limit, discover_changed_paths, strict_node_history, receiver, ) def close(self): pass # Check to see if the given path is a local Subversion repo. Verify this by # looking for several svn-specific files and directories in the given # directory. def filecheck(ui, path, proto): for x in (b'locks', b'hooks', b'format', b'db'): if not os.path.exists(os.path.join(path, x)): return False return True # Check to see if a given path is the root of an svn repo over http. We verify # this by requesting a version-controlled URL we know can't exist and looking # for the svn-specific "not found" XML. def httpcheck(ui, path, proto): try: opener = urlreq.buildopener() rsp = opener.open( pycompat.strurl(b'%s://%s/!svn/ver/0/.svn' % (proto, path)), b'rb' ) data = rsp.read() except urlerr.httperror as inst: if inst.code != 404: # Except for 404 we cannot know for sure this is not an svn repo ui.warn( _( b'svn: cannot probe remote repository, assume it could ' b'be a subversion repository. Use --source-type if you ' b'know better.\n' ) ) return True data = inst.fp.read() except Exception: # Could be urlerr.urlerror if the URL is invalid or anything else. return False return b'<m:human-readable errcode="160013">' in data protomap = { b'http': httpcheck, b'https': httpcheck, b'file': filecheck, } class NonUtf8PercentEncodedBytes(Exception): pass # Subversion paths are Unicode. Since the percent-decoding is done on # UTF-8-encoded strings, percent-encoded bytes are interpreted as UTF-8. def url2pathname_like_subversion(unicodepath): if pycompat.ispy3: # On Python 3, we have to pass unicode to urlreq.url2pathname(). # Percent-decoded bytes get decoded using UTF-8 and the 'replace' error # handler. unicodepath = urlreq.url2pathname(unicodepath) if u'\N{REPLACEMENT CHARACTER}' in unicodepath: raise NonUtf8PercentEncodedBytes else: return unicodepath else: # If we passed unicode on Python 2, it would be converted using the # latin-1 encoding. Therefore, we pass UTF-8-encoded bytes. unicodepath = urlreq.url2pathname(unicodepath.encode('utf-8')) try: return unicodepath.decode('utf-8') except UnicodeDecodeError: raise NonUtf8PercentEncodedBytes def issvnurl(ui, url): try: proto, path = url.split(b'://', 1) if proto == b'file': if ( pycompat.iswindows and path[:1] == b'/' and path[1:2].isalpha() and path[2:6].lower() == b'%3a/' ): path = path[:2] + b':/' + path[6:] try: unicodepath = path.decode(fsencoding) except UnicodeDecodeError: ui.warn( _( b'Subversion requires that file URLs can be converted ' b'to Unicode using the current locale encoding (%s)\n' ) % pycompat.sysbytes(fsencoding) ) return False try: unicodepath = url2pathname_like_subversion(unicodepath) except NonUtf8PercentEncodedBytes: ui.warn( _( b'Subversion does not support non-UTF-8 ' b'percent-encoded bytes in file URLs\n' ) ) return False # Below, we approximate how Subversion checks the path. On Unix, we # should therefore convert the path to bytes using `fsencoding` # (like Subversion does). On Windows, the right thing would # actually be to leave the path as unicode. For now, we restrict # the path to MBCS. path = unicodepath.encode(fsencoding) except ValueError: proto = b'file' path = os.path.abspath(url) try: path.decode(fsencoding) except UnicodeDecodeError: ui.warn( _( b'Subversion requires that paths can be converted to ' b'Unicode using the current locale encoding (%s)\n' ) % pycompat.sysbytes(fsencoding) ) return False if proto == b'file': path = util.pconvert(path) elif proto in (b'http', 'https'): if not encoding.isasciistr(path): ui.warn( _( b"Subversion sources don't support non-ASCII characters in " b"HTTP(S) URLs. Please percent-encode them.\n" ) ) return False check = protomap.get(proto, lambda *args: False) while b'/' in path: if check(ui, path, proto): return True path = path.rsplit(b'/', 1)[0] return False # SVN conversion code stolen from bzr-svn and tailor # # Subversion looks like a versioned filesystem, branches structures # are defined by conventions and not enforced by the tool. First, # we define the potential branches (modules) as "trunk" and "branches" # children directories. Revisions are then identified by their # module and revision number (and a repository identifier). # # The revision graph is really a tree (or a forest). By default, a # revision parent is the previous revision in the same module. If the # module directory is copied/moved from another module then the # revision is the module root and its parent the source revision in # the parent module. A revision has at most one parent. # class svn_source(converter_source): def __init__(self, ui, repotype, url, revs=None): super(svn_source, self).__init__(ui, repotype, url, revs=revs) init_fsencoding() if not ( url.startswith(b'svn://') or url.startswith(b'svn+ssh://') or ( os.path.exists(url) and os.path.exists(os.path.join(url, b'.svn')) ) or issvnurl(ui, url) ): raise NoRepo( _(b"%s does not look like a Subversion repository") % url ) if svn is None: raise MissingTool(_(b'could not load Subversion python bindings')) try: version = svn.core.SVN_VER_MAJOR, svn.core.SVN_VER_MINOR if version < (1, 4): raise MissingTool( _( b'Subversion python bindings %d.%d found, ' b'1.4 or later required' ) % version ) except AttributeError: raise MissingTool( _( b'Subversion python bindings are too old, 1.4 ' b'or later required' ) ) self.lastrevs = {} latest = None try: # Support file://path@rev syntax. Useful e.g. to convert # deleted branches. at = url.rfind(b'@') if at >= 0: latest = int(url[at + 1 :]) url = url[:at] except ValueError: pass self.url = geturl(url) self.encoding = b'UTF-8' # Subversion is always nominal UTF-8 try: with util.with_lc_ctype(): self.transport = transport.SvnRaTransport(url=self.url) self.ra = self.transport.ra self.ctx = self.transport.client self.baseurl = svn.ra.get_repos_root(self.ra) # Module is either empty or a repository path starting with # a slash and not ending with a slash. self.module = urlreq.unquote(self.url[len(self.baseurl) :]) self.prevmodule = None self.rootmodule = self.module self.commits = {} self.paths = {} self.uuid = svn.ra.get_uuid(self.ra) except svn.core.SubversionException: ui.traceback() svnversion = b'%d.%d.%d' % ( svn.core.SVN_VER_MAJOR, svn.core.SVN_VER_MINOR, svn.core.SVN_VER_MICRO, ) raise NoRepo( _( b"%s does not look like a Subversion repository " b"to libsvn version %s" ) % (self.url, svnversion) ) if revs: if len(revs) > 1: raise error.Abort( _( b'subversion source does not support ' b'specifying multiple revisions' ) ) try: latest = int(revs[0]) except ValueError: raise error.Abort( _(b'svn: revision %s is not an integer') % revs[0] ) trunkcfg = self.ui.config(b'convert', b'svn.trunk') if trunkcfg is None: trunkcfg = b'trunk' self.trunkname = trunkcfg.strip(b'/') self.startrev = self.ui.config(b'convert', b'svn.startrev') try: self.startrev = int(self.startrev) if self.startrev < 0: self.startrev = 0 except ValueError: raise error.Abort( _(b'svn: start revision %s is not an integer') % self.startrev ) try: with util.with_lc_ctype(): self.head = self.latest(self.module, latest) except SvnPathNotFound: self.head = None if not self.head: raise error.Abort( _(b'no revision found in module %s') % self.module ) self.last_changed = self.revnum(self.head) self._changescache = (None, None) if os.path.exists(os.path.join(url, b'.svn/entries')): self.wc = url else: self.wc = None self.convertfp = None def before(self): self.with_lc_ctype = util.with_lc_ctype() self.with_lc_ctype.__enter__() def after(self): self.with_lc_ctype.__exit__(None, None, None) def setrevmap(self, revmap): lastrevs = {} for revid in revmap: uuid, module, revnum = revsplit(revid) lastrevnum = lastrevs.setdefault(module, revnum) if revnum > lastrevnum: lastrevs[module] = revnum self.lastrevs = lastrevs def exists(self, path, optrev): try: svn.client.ls( self.url.rstrip(b'/') + b'/' + quote(path), optrev, False, self.ctx, ) return True except svn.core.SubversionException: return False def getheads(self): def isdir(path, revnum): kind = self._checkpath(path, revnum) return kind == svn.core.svn_node_dir def getcfgpath(name, rev): cfgpath = self.ui.config(b'convert', b'svn.' + name) if cfgpath is not None and cfgpath.strip() == b'': return None path = (cfgpath or name).strip(b'/') if not self.exists(path, rev): if self.module.endswith(path) and name == b'trunk': # we are converting from inside this directory return None if cfgpath: raise error.Abort( _(b'expected %s to be at %r, but not found') % (name, path) ) return None self.ui.note( _(b'found %s at %r\n') % (name, pycompat.bytestr(path)) ) return path rev = optrev(self.last_changed) oldmodule = b'' trunk = getcfgpath(b'trunk', rev) self.tags = getcfgpath(b'tags', rev) branches = getcfgpath(b'branches', rev) # If the project has a trunk or branches, we will extract heads # from them. We keep the project root otherwise. if trunk: oldmodule = self.module or b'' self.module += b'/' + trunk self.head = self.latest(self.module, self.last_changed) if not self.head: raise error.Abort( _(b'no revision found in module %s') % self.module ) # First head in the list is the module's head self.heads = [self.head] if self.tags is not None: self.tags = b'%s/%s' % (oldmodule, (self.tags or b'tags')) # Check if branches bring a few more heads to the list if branches: rpath = self.url.strip(b'/') branchnames = svn.client.ls( rpath + b'/' + quote(branches), rev, False, self.ctx ) for branch in sorted(branchnames): module = b'%s/%s/%s' % (oldmodule, branches, branch) if not isdir(module, self.last_changed): continue brevid = self.latest(module, self.last_changed) if not brevid: self.ui.note(_(b'ignoring empty branch %s\n') % branch) continue self.ui.note( _(b'found branch %s at %d\n') % (branch, self.revnum(brevid)) ) self.heads.append(brevid) if self.startrev and self.heads: if len(self.heads) > 1: raise error.Abort( _( b'svn: start revision is not supported ' b'with more than one branch' ) ) revnum = self.revnum(self.heads[0]) if revnum < self.startrev: raise error.Abort( _(b'svn: no revision found after start revision %d') % self.startrev ) return self.heads def _getchanges(self, rev, full): (paths, parents) = self.paths[rev] copies = {} if parents: files, self.removed, copies = self.expandpaths(rev, paths, parents) if full or not parents: # Perform a full checkout on roots uuid, module, revnum = revsplit(rev) entries = svn.client.ls( self.baseurl + quote(module), optrev(revnum), True, self.ctx ) files = [ n for n, e in pycompat.iteritems(entries) if e.kind == svn.core.svn_node_file ] self.removed = set() files.sort() files = pycompat.ziplist(files, [rev] * len(files)) return (files, copies) def getchanges(self, rev, full): # reuse cache from getchangedfiles if self._changescache[0] == rev and not full: (files, copies) = self._changescache[1] else: (files, copies) = self._getchanges(rev, full) # caller caches the result, so free it here to release memory del self.paths[rev] return (files, copies, set()) def getchangedfiles(self, rev, i): # called from filemap - cache computed values for reuse in getchanges (files, copies) = self._getchanges(rev, False) self._changescache = (rev, (files, copies)) return [f[0] for f in files] def getcommit(self, rev): if rev not in self.commits: uuid, module, revnum = revsplit(rev) self.module = module self.reparent(module) # We assume that: # - requests for revisions after "stop" come from the # revision graph backward traversal. Cache all of them # down to stop, they will be used eventually. # - requests for revisions before "stop" come to get # isolated branches parents. Just fetch what is needed. stop = self.lastrevs.get(module, 0) if revnum < stop: stop = revnum + 1 self._fetch_revisions(revnum, stop) if rev not in self.commits: raise error.Abort(_(b'svn: revision %s not found') % revnum) revcommit = self.commits[rev] # caller caches the result, so free it here to release memory del self.commits[rev] return revcommit def checkrevformat(self, revstr, mapname=b'splicemap'): """ fails if revision format does not match the correct format""" if not re.match( br'svn:[0-9a-f]{8,8}-[0-9a-f]{4,4}-' br'[0-9a-f]{4,4}-[0-9a-f]{4,4}-[0-9a-f]' br'{12,12}(.*)@[0-9]+$', revstr, ): raise error.Abort( _(b'%s entry %s is not a valid revision identifier') % (mapname, revstr) ) def numcommits(self): return int(self.head.rsplit(b'@', 1)[1]) - self.startrev def gettags(self): tags = {} if self.tags is None: return tags # svn tags are just a convention, project branches left in a # 'tags' directory. There is no other relationship than # ancestry, which is expensive to discover and makes them hard # to update incrementally. Worse, past revisions may be # referenced by tags far away in the future, requiring a deep # history traversal on every calculation. Current code # performs a single backward traversal, tracking moves within # the tags directory (tag renaming) and recording a new tag # everytime a project is copied from outside the tags # directory. It also lists deleted tags, this behaviour may # change in the future. pendings = [] tagspath = self.tags start = svn.ra.get_latest_revnum(self.ra) stream = self._getlog([self.tags], start, self.startrev) try: for entry in stream: origpaths, revnum, author, date, message = entry if not origpaths: origpaths = [] copies = [ (e.copyfrom_path, e.copyfrom_rev, p) for p, e in pycompat.iteritems(origpaths) if e.copyfrom_path ] # Apply moves/copies from more specific to general copies.sort(reverse=True) srctagspath = tagspath if copies and copies[-1][2] == tagspath: # Track tags directory moves srctagspath = copies.pop()[0] for source, sourcerev, dest in copies: if not dest.startswith(tagspath + b'/'): continue for tag in pendings: if tag[0].startswith(dest): tagpath = source + tag[0][len(dest) :] tag[:2] = [tagpath, sourcerev] break else: pendings.append([source, sourcerev, dest]) # Filter out tags with children coming from different # parts of the repository like: # /tags/tag.1 (from /trunk:10) # /tags/tag.1/foo (from /branches/foo:12) # Here/tags/tag.1 discarded as well as its children. # It happens with tools like cvs2svn. Such tags cannot # be represented in mercurial. addeds = { p: e.copyfrom_path for p, e in pycompat.iteritems(origpaths) if e.action == b'A' and e.copyfrom_path } badroots = set() for destroot in addeds: for source, sourcerev, dest in pendings: if not dest.startswith( destroot + b'/' ) or source.startswith(addeds[destroot] + b'/'): continue badroots.add(destroot) break for badroot in badroots: pendings = [ p for p in pendings if p[2] != badroot and not p[2].startswith(badroot + b'/') ] # Tell tag renamings from tag creations renamings = [] for source, sourcerev, dest in pendings: tagname = dest.split(b'/')[-1] if source.startswith(srctagspath): renamings.append([source, sourcerev, tagname]) continue if tagname in tags: # Keep the latest tag value continue # From revision may be fake, get one with changes try: tagid = self.latest(source, sourcerev) if tagid and tagname not in tags: tags[tagname] = tagid except SvnPathNotFound: # It happens when we are following directories # we assumed were copied with their parents # but were really created in the tag # directory. pass pendings = renamings tagspath = srctagspath finally: stream.close() return tags def converted(self, rev, destrev): if not self.wc: return if self.convertfp is None: self.convertfp = open( os.path.join(self.wc, b'.svn', b'hg-shamap'), b'ab' ) self.convertfp.write( util.tonativeeol(b'%s %d\n' % (destrev, self.revnum(rev))) ) self.convertfp.flush() def revid(self, revnum, module=None): return b'svn:%s%s@%d' % (self.uuid, module or self.module, revnum) def revnum(self, rev): return int(rev.split(b'@')[-1]) def latest(self, path, stop=None): """Find the latest revid affecting path, up to stop revision number. If stop is None, default to repository latest revision. It may return a revision in a different module, since a branch may be moved without a change being reported. Return None if computed module does not belong to rootmodule subtree. """ def findchanges(path, start, stop=None): stream = self._getlog([path], start, stop or 1) try: for entry in stream: paths, revnum, author, date, message = entry if stop is None and paths: # We do not know the latest changed revision, # keep the first one with changed paths. break if stop is not None and revnum <= stop: break for p in paths: if not path.startswith(p) or not paths[p].copyfrom_path: continue newpath = paths[p].copyfrom_path + path[len(p) :] self.ui.debug( b"branch renamed from %s to %s at %d\n" % (path, newpath, revnum) ) path = newpath break if not paths: revnum = None return revnum, path finally: stream.close() if not path.startswith(self.rootmodule): # Requests on foreign branches may be forbidden at server level self.ui.debug(b'ignoring foreign branch %r\n' % path) return None if stop is None: stop = svn.ra.get_latest_revnum(self.ra) try: prevmodule = self.reparent(b'') dirent = svn.ra.stat(self.ra, path.strip(b'/'), stop) self.reparent(prevmodule) except svn.core.SubversionException: dirent = None if not dirent: raise SvnPathNotFound( _(b'%s not found up to revision %d') % (path, stop) ) # stat() gives us the previous revision on this line of # development, but it might be in *another module*. Fetch the # log and detect renames down to the latest revision. revnum, realpath = findchanges(path, stop, dirent.created_rev) if revnum is None: # Tools like svnsync can create empty revision, when # synchronizing only a subtree for instance. These empty # revisions created_rev still have their original values # despite all changes having disappeared and can be # returned by ra.stat(), at least when stating the root # module. In that case, do not trust created_rev and scan # the whole history. revnum, realpath = findchanges(path, stop) if revnum is None: self.ui.debug(b'ignoring empty branch %r\n' % realpath) return None if not realpath.startswith(self.rootmodule): self.ui.debug(b'ignoring foreign branch %r\n' % realpath) return None return self.revid(revnum, realpath) def reparent(self, module): """Reparent the svn transport and return the previous parent.""" if self.prevmodule == module: return module svnurl = self.baseurl + quote(module) prevmodule = self.prevmodule if prevmodule is None: prevmodule = b'' self.ui.debug(b"reparent to %s\n" % svnurl) svn.ra.reparent(self.ra, svnurl) self.prevmodule = module return prevmodule def expandpaths(self, rev, paths, parents): changed, removed = set(), set() copies = {} new_module, revnum = revsplit(rev)[1:] if new_module != self.module: self.module = new_module self.reparent(self.module) progress = self.ui.makeprogress( _(b'scanning paths'), unit=_(b'paths'), total=len(paths) ) for i, (path, ent) in enumerate(paths): progress.update(i, item=path) entrypath = self.getrelpath(path) kind = self._checkpath(entrypath, revnum) if kind == svn.core.svn_node_file: changed.add(self.recode(entrypath)) if not ent.copyfrom_path or not parents: continue # Copy sources not in parent revisions cannot be # represented, ignore their origin for now pmodule, prevnum = revsplit(parents[0])[1:] if ent.copyfrom_rev < prevnum: continue copyfrom_path = self.getrelpath(ent.copyfrom_path, pmodule) if not copyfrom_path: continue self.ui.debug( b"copied to %s from %s@%d\n" % (entrypath, copyfrom_path, ent.copyfrom_rev) ) copies[self.recode(entrypath)] = self.recode(copyfrom_path) elif kind == 0: # gone, but had better be a deleted *file* self.ui.debug(b"gone from %d\n" % ent.copyfrom_rev) pmodule, prevnum = revsplit(parents[0])[1:] parentpath = pmodule + b"/" + entrypath fromkind = self._checkpath(entrypath, prevnum, pmodule) if fromkind == svn.core.svn_node_file: removed.add(self.recode(entrypath)) elif fromkind == svn.core.svn_node_dir: oroot = parentpath.strip(b'/') nroot = path.strip(b'/') children = self._iterfiles(oroot, prevnum) for childpath in children: childpath = childpath.replace(oroot, nroot) childpath = self.getrelpath(b"/" + childpath, pmodule) if childpath: removed.add(self.recode(childpath)) else: self.ui.debug( b'unknown path in revision %d: %s\n' % (revnum, path) ) elif kind == svn.core.svn_node_dir: if ent.action == b'M': # If the directory just had a prop change, # then we shouldn't need to look for its children. continue if ent.action == b'R' and parents: # If a directory is replacing a file, mark the previous # file as deleted pmodule, prevnum = revsplit(parents[0])[1:] pkind = self._checkpath(entrypath, prevnum, pmodule) if pkind == svn.core.svn_node_file: removed.add(self.recode(entrypath)) elif pkind == svn.core.svn_node_dir: # We do not know what files were kept or removed, # mark them all as changed. for childpath in self._iterfiles(pmodule, prevnum): childpath = self.getrelpath(b"/" + childpath) if childpath: changed.add(self.recode(childpath)) for childpath in self._iterfiles(path, revnum): childpath = self.getrelpath(b"/" + childpath) if childpath: changed.add(self.recode(childpath)) # Handle directory copies if not ent.copyfrom_path or not parents: continue # Copy sources not in parent revisions cannot be # represented, ignore their origin for now pmodule, prevnum = revsplit(parents[0])[1:] if ent.copyfrom_rev < prevnum: continue copyfrompath = self.getrelpath(ent.copyfrom_path, pmodule) if not copyfrompath: continue self.ui.debug( b"mark %s came from %s:%d\n" % (path, copyfrompath, ent.copyfrom_rev) ) children = self._iterfiles(ent.copyfrom_path, ent.copyfrom_rev) for childpath in children: childpath = self.getrelpath(b"/" + childpath, pmodule) if not childpath: continue copytopath = path + childpath[len(copyfrompath) :] copytopath = self.getrelpath(copytopath) copies[self.recode(copytopath)] = self.recode(childpath) progress.complete() changed.update(removed) return (list(changed), removed, copies) def _fetch_revisions(self, from_revnum, to_revnum): if from_revnum < to_revnum: from_revnum, to_revnum = to_revnum, from_revnum self.child_cset = None def parselogentry(orig_paths, revnum, author, date, message): """Return the parsed commit object or None, and True if the revision is a branch root. """ self.ui.debug( b"parsing revision %d (%d changes)\n" % (revnum, len(orig_paths)) ) branched = False rev = self.revid(revnum) # branch log might return entries for a parent we already have if rev in self.commits or revnum < to_revnum: return None, branched parents = [] # check whether this revision is the start of a branch or part # of a branch renaming orig_paths = sorted(pycompat.iteritems(orig_paths)) root_paths = [ (p, e) for p, e in orig_paths if self.module.startswith(p) ] if root_paths: path, ent = root_paths[-1] if ent.copyfrom_path: branched = True newpath = ent.copyfrom_path + self.module[len(path) :] # ent.copyfrom_rev may not be the actual last revision previd = self.latest(newpath, ent.copyfrom_rev) if previd is not None: prevmodule, prevnum = revsplit(previd)[1:] if prevnum >= self.startrev: parents = [previd] self.ui.note( _(b'found parent of branch %s at %d: %s\n') % (self.module, prevnum, prevmodule) ) else: self.ui.debug(b"no copyfrom path, don't know what to do.\n") paths = [] # filter out unrelated paths for path, ent in orig_paths: if self.getrelpath(path) is None: continue paths.append((path, ent)) date = parsesvndate(date) if self.ui.configbool(b'convert', b'localtimezone'): date = makedatetimestamp(date[0]) if message: log = self.recode(message) else: log = b'' if author: author = self.recode(author) else: author = b'' try: branch = self.module.split(b"/")[-1] if branch == self.trunkname: branch = None except IndexError: branch = None cset = commit( author=author, date=dateutil.datestr(date, b'%Y-%m-%d %H:%M:%S %1%2'), desc=log, parents=parents, branch=branch, rev=rev, ) self.commits[rev] = cset # The parents list is *shared* among self.paths and the # commit object. Both will be updated below. self.paths[rev] = (paths, cset.parents) if self.child_cset and not self.child_cset.parents: self.child_cset.parents[:] = [rev] self.child_cset = cset return cset, branched self.ui.note( _(b'fetching revision log for "%s" from %d to %d\n') % (self.module, from_revnum, to_revnum) ) try: firstcset = None lastonbranch = False stream = self._getlog([self.module], from_revnum, to_revnum) try: for entry in stream: paths, revnum, author, date, message = entry if revnum < self.startrev: lastonbranch = True break if not paths: self.ui.debug(b'revision %d has no entries\n' % revnum) # If we ever leave the loop on an empty # revision, do not try to get a parent branch lastonbranch = lastonbranch or revnum == 0 continue cset, lastonbranch = parselogentry( paths, revnum, author, date, message ) if cset: firstcset = cset if lastonbranch: break finally: stream.close() if not lastonbranch and firstcset and not firstcset.parents: # The first revision of the sequence (the last fetched one) # has invalid parents if not a branch root. Find the parent # revision now, if any. try: firstrevnum = self.revnum(firstcset.rev) if firstrevnum > 1: latest = self.latest(self.module, firstrevnum - 1) if latest: firstcset.parents.append(latest) except SvnPathNotFound: pass except svn.core.SubversionException as xxx_todo_changeme: (inst, num) = xxx_todo_changeme.args if num == svn.core.SVN_ERR_FS_NO_SUCH_REVISION: raise error.Abort( _(b'svn: branch has no revision %s') % to_revnum ) raise def getfile(self, file, rev): # TODO: ra.get_file transmits the whole file instead of diffs. if file in self.removed: return None, None try: new_module, revnum = revsplit(rev)[1:] if self.module != new_module: self.module = new_module self.reparent(self.module) io = stringio() info = svn.ra.get_file(self.ra, file, revnum, io) data = io.getvalue() # ra.get_file() seems to keep a reference on the input buffer # preventing collection. Release it explicitly. io.close() if isinstance(info, list): info = info[-1] mode = (b"svn:executable" in info) and b'x' or b'' mode = (b"svn:special" in info) and b'l' or mode except svn.core.SubversionException as e: notfound = ( svn.core.SVN_ERR_FS_NOT_FOUND, svn.core.SVN_ERR_RA_DAV_PATH_NOT_FOUND, ) if e.apr_err in notfound: # File not found return None, None raise if mode == b'l': link_prefix = b"link " if data.startswith(link_prefix): data = data[len(link_prefix) :] return data, mode def _iterfiles(self, path, revnum): """Enumerate all files in path at revnum, recursively.""" path = path.strip(b'/') pool = svn.core.Pool() rpath = b'/'.join([self.baseurl, quote(path)]).strip(b'/') entries = svn.client.ls(rpath, optrev(revnum), True, self.ctx, pool) if path: path += b'/' return ( (path + p) for p, e in pycompat.iteritems(entries) if e.kind == svn.core.svn_node_file ) def getrelpath(self, path, module=None): if module is None: module = self.module # Given the repository url of this wc, say # "http://server/plone/CMFPlone/branches/Plone-2_0-branch" # extract the "entry" portion (a relative path) from what # svn log --xml says, i.e. # "/CMFPlone/branches/Plone-2_0-branch/tests/PloneTestCase.py" # that is to say "tests/PloneTestCase.py" if path.startswith(module): relative = path.rstrip(b'/')[len(module) :] if relative.startswith(b'/'): return relative[1:] elif relative == b'': return relative # The path is outside our tracked tree... self.ui.debug( b'%r is not under %r, ignoring\n' % (pycompat.bytestr(path), pycompat.bytestr(module)) ) return None def _checkpath(self, path, revnum, module=None): if module is not None: prevmodule = self.reparent(b'') path = module + b'/' + path try: # ra.check_path does not like leading slashes very much, it leads # to PROPFIND subversion errors return svn.ra.check_path(self.ra, path.strip(b'/'), revnum) finally: if module is not None: self.reparent(prevmodule) def _getlog( self, paths, start, end, limit=0, discover_changed_paths=True, strict_node_history=False, ): # Normalize path names, svn >= 1.5 only wants paths relative to # supplied URL relpaths = [] for p in paths: if not p.startswith(b'/'): p = self.module + b'/' + p relpaths.append(p.strip(b'/')) args = [ self.baseurl, relpaths, start, end, limit, discover_changed_paths, strict_node_history, ] # developer config: convert.svn.debugsvnlog if not self.ui.configbool(b'convert', b'svn.debugsvnlog'): return directlogstream(*args) arg = encodeargs(args) hgexe = procutil.hgexecutable() cmd = b'%s debugsvnlog' % procutil.shellquote(hgexe) stdin, stdout = procutil.popen2(cmd) stdin.write(arg) try: stdin.close() except IOError: raise error.Abort( _( b'Mercurial failed to run itself, check' b' hg executable is in PATH' ) ) return logstream(stdout) pre_revprop_change_template = b'''#!/bin/sh REPOS="$1" REV="$2" USER="$3" PROPNAME="$4" ACTION="$5" %(rules)s echo "Changing prohibited revision property" >&2 exit 1 ''' def gen_pre_revprop_change_hook(prop_actions_allowed): rules = [] for action, propname in prop_actions_allowed: rules.append( ( b'if [ "$ACTION" = "%s" -a "$PROPNAME" = "%s" ]; ' b'then exit 0; fi' ) % (action, propname) ) return pre_revprop_change_template % {b'rules': b'\n'.join(rules)} class svn_sink(converter_sink, commandline): commit_re = re.compile(br'Committed revision (\d+).', re.M) uuid_re = re.compile(br'Repository UUID:\s*(\S+)', re.M) def prerun(self): if self.wc: os.chdir(self.wc) def postrun(self): if self.wc: os.chdir(self.cwd) def join(self, name): return os.path.join(self.wc, b'.svn', name) def revmapfile(self): return self.join(b'hg-shamap') def authorfile(self): return self.join(b'hg-authormap') def __init__(self, ui, repotype, path): converter_sink.__init__(self, ui, repotype, path) commandline.__init__(self, ui, b'svn') self.delete = [] self.setexec = [] self.delexec = [] self.copies = [] self.wc = None self.cwd = encoding.getcwd() created = False if os.path.isfile(os.path.join(path, b'.svn', b'entries')): self.wc = os.path.realpath(path) self.run0(b'update') else: if not re.search(br'^(file|http|https|svn|svn\+ssh)://', path): path = os.path.realpath(path) if os.path.isdir(os.path.dirname(path)): if not os.path.exists( os.path.join(path, b'db', b'fs-type') ): ui.status( _(b"initializing svn repository '%s'\n") % os.path.basename(path) ) commandline(ui, b'svnadmin').run0(b'create', path) created = path path = util.normpath(path) if not path.startswith(b'/'): path = b'/' + path path = b'file://' + path wcpath = os.path.join( encoding.getcwd(), os.path.basename(path) + b'-wc' ) ui.status( _(b"initializing svn working copy '%s'\n") % os.path.basename(wcpath) ) self.run0(b'checkout', path, wcpath) self.wc = wcpath self.opener = vfsmod.vfs(self.wc) self.wopener = vfsmod.vfs(self.wc) self.childmap = mapfile(ui, self.join(b'hg-childmap')) if util.checkexec(self.wc): self.is_exec = util.isexec else: self.is_exec = None if created: prop_actions_allowed = [ (b'M', b'svn:log'), (b'A', b'hg:convert-branch'), (b'A', b'hg:convert-rev'), ] if self.ui.configbool( b'convert', b'svn.dangerous-set-commit-dates' ): prop_actions_allowed.append((b'M', b'svn:date')) hook = os.path.join(created, b'hooks', b'pre-revprop-change') fp = open(hook, b'wb') fp.write(gen_pre_revprop_change_hook(prop_actions_allowed)) fp.close() util.setflags(hook, False, True) output = self.run0(b'info') self.uuid = self.uuid_re.search(output).group(1).strip() def wjoin(self, *names): return os.path.join(self.wc, *names) @propertycache def manifest(self): # As of svn 1.7, the "add" command fails when receiving # already tracked entries, so we have to track and filter them # ourselves. m = set() output = self.run0(b'ls', recursive=True, xml=True) doc = xml.dom.minidom.parseString(output) for e in doc.getElementsByTagName('entry'): for n in e.childNodes: if n.nodeType != n.ELEMENT_NODE or n.tagName != 'name': continue name = ''.join( c.data for c in n.childNodes if c.nodeType == c.TEXT_NODE ) # Entries are compared with names coming from # mercurial, so bytes with undefined encoding. Our # best bet is to assume they are in local # encoding. They will be passed to command line calls # later anyway, so they better be. m.add(encoding.unitolocal(name)) break return m def putfile(self, filename, flags, data): if b'l' in flags: self.wopener.symlink(data, filename) else: try: if os.path.islink(self.wjoin(filename)): os.unlink(filename) except OSError: pass if self.is_exec: # We need to check executability of the file before the change, # because `vfs.write` is able to reset exec bit. wasexec = False if os.path.exists(self.wjoin(filename)): wasexec = self.is_exec(self.wjoin(filename)) self.wopener.write(filename, data) if self.is_exec: if wasexec: if b'x' not in flags: self.delexec.append(filename) else: if b'x' in flags: self.setexec.append(filename) util.setflags(self.wjoin(filename), False, b'x' in flags) def _copyfile(self, source, dest): # SVN's copy command pukes if the destination file exists, but # our copyfile method expects to record a copy that has # already occurred. Cross the semantic gap. wdest = self.wjoin(dest) exists = os.path.lexists(wdest) if exists: fd, tempname = pycompat.mkstemp( prefix=b'hg-copy-', dir=os.path.dirname(wdest) ) os.close(fd) os.unlink(tempname) os.rename(wdest, tempname) try: self.run0(b'copy', source, dest) finally: self.manifest.add(dest) if exists: try: os.unlink(wdest) except OSError: pass os.rename(tempname, wdest) def dirs_of(self, files): dirs = set() for f in files: if os.path.isdir(self.wjoin(f)): dirs.add(f) i = len(f) for i in iter(lambda: f.rfind(b'/', 0, i), -1): dirs.add(f[:i]) return dirs def add_dirs(self, files): add_dirs = [ d for d in sorted(self.dirs_of(files)) if d not in self.manifest ] if add_dirs: self.manifest.update(add_dirs) self.xargs(add_dirs, b'add', non_recursive=True, quiet=True) return add_dirs def add_files(self, files): files = [f for f in files if f not in self.manifest] if files: self.manifest.update(files) self.xargs(files, b'add', quiet=True) return files def addchild(self, parent, child): self.childmap[parent] = child def revid(self, rev): return b"svn:%s@%s" % (self.uuid, rev) def putcommit( self, files, copies, parents, commit, source, revmap, full, cleanp2 ): for parent in parents: try: return self.revid(self.childmap[parent]) except KeyError: pass # Apply changes to working copy for f, v in files: data, mode = source.getfile(f, v) if data is None: self.delete.append(f) else: self.putfile(f, mode, data) if f in copies: self.copies.append([copies[f], f]) if full: self.delete.extend(sorted(self.manifest.difference(files))) files = [f[0] for f in files] entries = set(self.delete) files = frozenset(files) entries.update(self.add_dirs(files.difference(entries))) if self.copies: for s, d in self.copies: self._copyfile(s, d) self.copies = [] if self.delete: self.xargs(self.delete, b'delete') for f in self.delete: self.manifest.remove(f) self.delete = [] entries.update(self.add_files(files.difference(entries))) if self.delexec: self.xargs(self.delexec, b'propdel', b'svn:executable') self.delexec = [] if self.setexec: self.xargs(self.setexec, b'propset', b'svn:executable', b'*') self.setexec = [] fd, messagefile = pycompat.mkstemp(prefix=b'hg-convert-') fp = os.fdopen(fd, 'wb') fp.write(util.tonativeeol(commit.desc)) fp.close() try: output = self.run0( b'commit', username=stringutil.shortuser(commit.author), file=messagefile, encoding=b'utf-8', ) try: rev = self.commit_re.search(output).group(1) except AttributeError: if not files: return parents[0] if parents else b'None' self.ui.warn(_(b'unexpected svn output:\n')) self.ui.warn(output) raise error.Abort(_(b'unable to cope with svn output')) if commit.rev: self.run( b'propset', b'hg:convert-rev', commit.rev, revprop=True, revision=rev, ) if commit.branch and commit.branch != b'default': self.run( b'propset', b'hg:convert-branch', commit.branch, revprop=True, revision=rev, ) if self.ui.configbool( b'convert', b'svn.dangerous-set-commit-dates' ): # Subverson always uses UTC to represent date and time date = dateutil.parsedate(commit.date) date = (date[0], 0) # The only way to set date and time for svn commit is to use propset after commit is done self.run( b'propset', b'svn:date', formatsvndate(date), revprop=True, revision=rev, ) for parent in parents: self.addchild(parent, rev) return self.revid(rev) finally: os.unlink(messagefile) def puttags(self, tags): self.ui.warn(_(b'writing Subversion tags is not yet implemented\n')) return None, None def hascommitfrommap(self, rev): # We trust that revisions referenced in a map still is present # TODO: implement something better if necessary and feasible return True def hascommitforsplicemap(self, rev): # This is not correct as one can convert to an existing subversion # repository and childmap would not list all revisions. Too bad. if rev in self.childmap: return True raise error.Abort( _( b'splice map revision %s not found in subversion ' b'child map (revision lookups are not implemented)' ) % rev )