revlog: use a "radix" to address revlog
Instead of pointing to the index directly and to derive the other file from
that, we directly provide the radix and let the revlog determine the associated
file path internally. This is more robust and will give us more flexibility for
picking this file name in the future.
Differential Revision: https://phab.mercurial-scm.org/D10576
# 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
)