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# Subversion 1.4/1.5 Python API backend
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#
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# Copyright(C) 2007 Daniel Holth et al
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import pprint
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import locale
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from mercurial import util
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# Subversion stuff. Works best with very recent Python SVN bindings
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# e.g. SVN 1.5 or backports. Thanks to the bzr folks for enhancing
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# these bindings.
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from cStringIO import StringIO
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from common import NoRepo, commit, converter_source
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try:
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from svn.core import SubversionException, Pool
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import svn.core
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import svn.ra
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import svn.delta
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import svn
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import transport
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except ImportError:
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pass
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class CompatibilityException(Exception): pass
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LOG_BATCH_SIZE = 50
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class svn_entry(object):
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"""Emulate a Subversion path change."""
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__slots__ = ['path', 'copyfrom_path', 'copyfrom_rev', 'action']
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def __init__(self, entry):
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self.copyfrom_path = entry.copyfrom_path
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self.copyfrom_rev = entry.copyfrom_rev
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self.action = entry.action
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def __str__(self):
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return "%s %s %s" % (self.action, self.copyfrom_path, self.copyfrom_rev)
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def __repr__(self):
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return self.__str__()
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class svn_paths(object):
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"""Emulate a Subversion ordered dictionary of changed paths."""
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__slots__ = ['values', 'order']
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def __init__(self, orig_paths):
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self.order = []
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self.values = {}
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if hasattr(orig_paths, 'keys'):
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self.order = sorted(orig_paths.keys())
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self.values.update(orig_paths)
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return
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if not orig_paths:
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return
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for path in orig_paths:
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self.order.append(path)
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self.values[path] = svn_entry(orig_paths[path])
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self.order.sort() # maybe the order it came in isn't so great...
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def __iter__(self):
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return iter(self.order)
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def __getitem__(self, key):
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return self.values[key]
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def __str__(self):
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s = "{\n"
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for path in self.order:
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s += "'%s': %s,\n" % (path, self.values[path])
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s += "}"
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return s
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def __repr__(self):
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return self.__str__()
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# SVN conversion code stolen from bzr-svn and tailor
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class convert_svn(converter_source):
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def __init__(self, ui, url, rev=None):
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try:
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SubversionException
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except NameError:
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msg = 'subversion python bindings could not be loaded\n'
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ui.warn(msg)
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raise NoRepo(msg)
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self.ui = ui
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self.encoding = locale.getpreferredencoding()
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latest = None
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if rev:
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try:
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latest = int(rev)
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except ValueError:
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raise util.Abort('svn: revision %s is not an integer' % rev)
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try:
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# Support file://path@rev syntax. Useful e.g. to convert
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# deleted branches.
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url, latest = url.rsplit("@", 1)
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latest = int(latest)
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except ValueError, e:
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pass
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self.url = url
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self.encoding = 'UTF-8' # Subversion is always nominal UTF-8
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try:
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self.transport = transport.SvnRaTransport(url = url)
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self.ra = self.transport.ra
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self.base = svn.ra.get_repos_root(self.ra)
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self.module = self.url[len(self.base):]
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self.modulemap = {} # revision, module
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self.commits = {}
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self.files = {}
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self.uuid = svn.ra.get_uuid(self.ra).decode(self.encoding)
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except SubversionException, e:
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raise NoRepo("couldn't open SVN repo %s" % url)
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try:
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self.get_blacklist()
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except IOError, e:
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pass
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if not latest:
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latest = svn.ra.get_latest_revnum(self.ra)
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dirent = svn.ra.stat(self.ra, self.module, latest)
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if not dirent:
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raise util.Abort('module %s not found in revision %d' % (self.module, latest))
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self.last_changed = dirent.created_rev
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self.head = self.rev(self.last_changed)
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def rev(self, revnum):
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return (u"svn:%s%s@%s" % (self.uuid, self.module, revnum)).decode(self.encoding)
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def revnum(self, rev):
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return int(rev.split('@')[-1])
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def get_blacklist(self):
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"""Avoid certain revision numbers.
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It is not uncommon for two nearby revisions to cancel each other
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out, e.g. 'I copied trunk into a subdirectory of itself instead
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of making a branch'. The converted repository is significantly
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smaller if we ignore such revisions."""
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self.blacklist = set()
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blacklist = self.blacklist
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for line in file("blacklist.txt", "r"):
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if not line.startswith("#"):
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try:
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svn_rev = int(line.strip())
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blacklist.add(svn_rev)
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except ValueError, e:
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pass # not an integer or a comment
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def is_blacklisted(self, svn_rev):
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return svn_rev in self.blacklist
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def reparent(self, module):
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svn_url = self.base + module
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self.ui.debug("reparent to %s\n" % svn_url.encode(self.encoding))
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svn.ra.reparent(self.ra, svn_url.encode(self.encoding))
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def _fetch_revisions(self, from_revnum = 0, to_revnum = 347, pb=None):
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# batching is broken for branches
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to_revnum = 0
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if not hasattr(self, 'child_rev'):
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self.child_rev = from_revnum
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self.child_cset = self.commits.get(self.child_rev)
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else:
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self.commits[self.child_rev] = self.child_cset
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# batching broken
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return
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# if the branch was created in the middle of the last batch,
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# svn log will complain that the path doesn't exist in this batch
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# so we roll the parser back to the last revision where this branch appeared
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revnum = self.revnum(self.child_rev)
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if revnum > from_revnum:
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from_revnum = revnum
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self.ui.debug('Fetching revisions %d to %d\n' % (from_revnum, to_revnum))
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def get_entry_from_path(path, module=self.module):
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# Given the repository url of this wc, say
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# "http://server/plone/CMFPlone/branches/Plone-2_0-branch"
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# extract the "entry" portion (a relative path) from what
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# svn log --xml says, ie
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# "/CMFPlone/branches/Plone-2_0-branch/tests/PloneTestCase.py"
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# that is to say "tests/PloneTestCase.py"
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if path.startswith(module):
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relative = path[len(module):]
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if relative.startswith('/'):
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return relative[1:]
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else:
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return relative
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# The path is outside our tracked tree...
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self.ui.debug('Ignoring %r since it is not under %r\n' % (path, module))
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return None
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received = []
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def rcvr(*arg, **args):
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orig_paths, revnum, author, date, message, pool = arg
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new_orig_paths = svn_paths(orig_paths)
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rcvr2(new_orig_paths, revnum, author, date, message, pool)
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def rcvr2(orig_paths, revnum, author, date, message, pool, better_paths = None):
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if not self.is_blacklisted(revnum):
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received.append((orig_paths, revnum, author, date, message))
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def after_received(orig_paths, revnum, author, date, message):
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if revnum in self.modulemap:
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new_module = self.modulemap[revnum]
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if new_module != self.module:
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self.module = new_module
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self.reparent(self.module)
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copyfrom = {} # Map of entrypath, revision for finding source of deleted revisions.
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copies = {}
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entries = []
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self.ui.debug("Parsing revision %d\n" % revnum)
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if orig_paths is not None:
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rev = self.rev(revnum)
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try:
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branch = self.module.split("/")[-1]
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if branch == 'trunk':
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branch = ''
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except IndexError:
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branch = None
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for path in orig_paths:
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# self.ui.write("path %s\n" % path)
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if path == self.module: # Follow branching back in history
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ent = orig_paths[path]
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if ent:
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if ent.copyfrom_path:
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self.modulemap[ent.copyfrom_rev] = ent.copyfrom_path
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else:
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self.ui.debug("No copyfrom path, don't know what to do.\n")
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# Maybe it was added and there is no more history.
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entrypath = get_entry_from_path(path, module=self.module)
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# self.ui.write("entrypath %s\n" % entrypath)
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if entrypath is None:
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# Outside our area of interest
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self.ui.debug("boring@%s: %s\n" % (revnum, path))
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continue
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entry = entrypath.decode(self.encoding)
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ent = orig_paths[path]
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if not entrypath:
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# TODO: branch creation event
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pass
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kind = svn.ra.check_path(self.ra, entrypath, revnum)
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if kind == svn.core.svn_node_file:
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if ent.copyfrom_path:
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copyfrom_path = get_entry_from_path(ent.copyfrom_path)
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if copyfrom_path:
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self.ui.debug("Copied to %s from %s@%s\n" % (entry, copyfrom_path, ent.copyfrom_rev))
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# It's probably important for hg that the source
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# exists in the revision's parent, not just the
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# ent.copyfrom_rev
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fromkind = svn.ra.check_path(self.ra, copyfrom_path, ent.copyfrom_rev)
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if fromkind != 0:
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copies[self.recode(entry)] = self.recode(copyfrom_path)
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entries.append(self.recode(entry))
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elif kind == 0: # gone, but had better be a deleted *file*
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self.ui.debug("gone from %s\n" % ent.copyfrom_rev)
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fromrev = revnum - 1
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# might always need to be revnum - 1 in these 3 lines?
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old_module = self.modulemap.get(fromrev, self.module)
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basepath = old_module + "/" + get_entry_from_path(path, module=self.module)
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entrypath = old_module + "/" + get_entry_from_path(path, module=self.module)
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def lookup_parts(p):
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rc = None
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parts = p.split("/")
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for i in range(len(parts)):
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part = "/".join(parts[:i])
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info = part, copyfrom.get(part, None)
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if info[1] is not None:
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self.ui.debug("Found parent directory %s\n" % info)
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rc = info
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return rc
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self.ui.debug("base, entry %s %s\n" % (basepath, entrypath))
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frompath, froment = lookup_parts(entrypath) or (None, revnum - 1)
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# need to remove fragment from lookup_parts and replace with copyfrom_path
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if frompath is not None:
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self.ui.debug("munge-o-matic\n")
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self.ui.debug(entrypath + '\n')
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self.ui.debug(entrypath[len(frompath):] + '\n')
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entrypath = froment.copyfrom_path + entrypath[len(frompath):]
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fromrev = froment.copyfrom_rev
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self.ui.debug("Info: %s %s %s %s\n" % (frompath, froment, ent, entrypath))
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fromkind = svn.ra.check_path(self.ra, entrypath, fromrev)
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if fromkind == svn.core.svn_node_file: # a deleted file
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entries.append(self.recode(entry))
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else:
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# print "Deleted/moved non-file:", revnum, path, ent
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# children = self._find_children(path, revnum - 1)
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# print "find children %s@%d from %d action %s" % (path, revnum, ent.copyfrom_rev, ent.action)
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# Sometimes this is tricky. For example: in
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# The Subversion Repository revision 6940 a dir
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# was copied and one of its files was deleted
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# from the new location in the same commit. This
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# code can't deal with that yet.
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if ent.action == 'C':
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children = self._find_children(path, fromrev)
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else:
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oroot = entrypath.strip('/')
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nroot = path.strip('/')
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children = self._find_children(oroot, fromrev)
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children = [s.replace(oroot,nroot) for s in children]
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# Mark all [files, not directories] as deleted.
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for child in children:
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# Can we move a child directory and its
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# parent in the same commit? (probably can). Could
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# cause problems if instead of revnum -1,
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# we have to look in (copyfrom_path, revnum - 1)
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entrypath = get_entry_from_path("/" + child, module=old_module)
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if entrypath:
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entry = self.recode(entrypath.decode(self.encoding))
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if entry in copies:
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# deleted file within a copy
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del copies[entry]
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else:
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entries.append(entry)
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elif kind == svn.core.svn_node_dir:
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# Should probably synthesize normal file entries
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# and handle as above to clean up copy/rename handling.
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# If the directory just had a prop change,
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# then we shouldn't need to look for its children.
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# Also this could create duplicate entries. Not sure
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# whether this will matter. Maybe should make entries a set.
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# print "Changed directory", revnum, path, ent.action, ent.copyfrom_path, ent.copyfrom_rev
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# This will fail if a directory was copied
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# from another branch and then some of its files
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# were deleted in the same transaction.
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children = self._find_children(path, revnum)
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children.sort()
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for child in children:
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# Can we move a child directory and its
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# parent in the same commit? (probably can). Could
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# cause problems if instead of revnum -1,
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# we have to look in (copyfrom_path, revnum - 1)
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entrypath = get_entry_from_path("/" + child, module=self.module)
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# print child, self.module, entrypath
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if entrypath:
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# Need to filter out directories here...
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kind = svn.ra.check_path(self.ra, entrypath, revnum)
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if kind != svn.core.svn_node_dir:
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entries.append(self.recode(entrypath))
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# Copies here (must copy all from source)
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# Probably not a real problem for us if
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# source does not exist
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# Can do this with the copy command "hg copy"
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# if ent.copyfrom_path:
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# copyfrom_entry = get_entry_from_path(ent.copyfrom_path.decode(self.encoding),
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# module=self.module)
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# copyto_entry = entrypath
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#
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# print "copy directory", copyfrom_entry, 'to', copyto_entry
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#
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# copies.append((copyfrom_entry, copyto_entry))
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if ent.copyfrom_path:
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copyfrom_path = ent.copyfrom_path.decode(self.encoding)
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copyfrom_entry = get_entry_from_path(copyfrom_path, module=self.module)
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if copyfrom_entry:
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copyfrom[path] = ent
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self.ui.debug("mark %s came from %s\n" % (path, copyfrom[path]))
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# Good, /probably/ a regular copy. Really should check
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# to see whether the parent revision actually contains
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# the directory in question.
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children = self._find_children(self.recode(copyfrom_path), ent.copyfrom_rev)
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children.sort()
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for child in children:
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entrypath = get_entry_from_path("/" + child, module=self.module)
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if entrypath:
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entry = entrypath.decode(self.encoding)
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# print "COPY COPY From", copyfrom_entry, entry
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copyto_path = path + entry[len(copyfrom_entry):]
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copyto_entry = get_entry_from_path(copyto_path, module=self.module)
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# print "COPY", entry, "COPY To", copyto_entry
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copies[self.recode(copyto_entry)] = self.recode(entry)
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# copy from quux splort/quuxfile
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self.modulemap[revnum] = self.module # track backwards in time
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# a list of (filename, id) where id lets us retrieve the file.
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# eg in git, id is the object hash. for svn it'll be the
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self.files[rev] = zip(entries, [rev] * len(entries))
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if not entries:
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return
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# Example SVN datetime. Includes microseconds.
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# ISO-8601 conformant
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# '2007-01-04T17:35:00.902377Z'
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date = util.parsedate(date[:18] + " UTC", ["%Y-%m-%dT%H:%M:%S"])
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log = message and self.recode(message)
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author = author and self.recode(author) or ''
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cset = commit(author=author,
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date=util.datestr(date),
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desc=log,
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parents=[],
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copies=copies,
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branch=branch)
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if self.child_cset and self.child_rev != rev:
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self.child_cset.parents = [rev]
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self.commits[self.child_rev] = self.child_cset
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self.child_cset = cset
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self.child_rev = rev
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try:
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discover_changed_paths = True
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strict_node_history = False
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svn.ra.get_log(self.ra, [self.module], from_revnum, to_revnum,
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0, discover_changed_paths, strict_node_history, rcvr)
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for args in received:
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after_received(*args)
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self.last_revnum = to_revnum
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except SubversionException, (_, num):
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if num == svn.core.SVN_ERR_FS_NO_SUCH_REVISION:
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raise NoSuchRevision(branch=self,
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revision="Revision number %d" % to_revnum)
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raise
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def getheads(self):
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# svn-url@rev
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# Not safe if someone committed:
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self.heads = [self.head]
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# print self.commits.keys()
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return self.heads
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def _getfile(self, file, rev):
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io = StringIO()
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# TODO: ra.get_file transmits the whole file instead of diffs.
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mode = ''
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try:
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revnum = self.revnum(rev)
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if self.module != self.modulemap[revnum]:
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self.module = self.modulemap[revnum]
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self.reparent(self.module)
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info = svn.ra.get_file(self.ra, file, revnum, io)
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if isinstance(info, list):
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info = info[-1]
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mode = ("svn:executable" in info) and 'x' or ''
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mode = ("svn:special" in info) and 'l' or mode
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except SubversionException, e:
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notfound = (svn.core.SVN_ERR_FS_NOT_FOUND,
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svn.core.SVN_ERR_RA_DAV_PATH_NOT_FOUND)
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if e.apr_err in notfound: # File not found
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raise IOError()
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raise
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data = io.getvalue()
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if mode == 'l':
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link_prefix = "link "
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if data.startswith(link_prefix):
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data = data[len(link_prefix):]
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return data, mode
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def getfile(self, file, rev):
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data, mode = self._getfile(file, rev)
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self.modecache[(file, rev)] = mode
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return data
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def getmode(self, file, rev):
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return self.modecache[(file, rev)]
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def getchanges(self, rev):
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self.modecache = {}
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files = self.files[rev]
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cl = files
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cl.sort()
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return cl
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def getcommit(self, rev):
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if rev not in self.commits:
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revnum = self.revnum(rev)
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minrev = revnum - LOG_BATCH_SIZE > 0 and revnum - LOG_BATCH_SIZE or 0
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self._fetch_revisions(from_revnum=revnum, to_revnum=minrev)
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return self.commits[rev]
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def gettags(self):
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return []
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def _find_children(self, path, revnum):
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path = path.strip("/")
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def _find_children_fallback(path, revnum):
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# SWIG python bindings for getdir are broken up to at least 1.4.3
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if not hasattr(self, 'client_ctx'):
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self.client_ctx = svn.client.create_context()
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optrev = svn.core.svn_opt_revision_t()
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optrev.kind = svn.core.svn_opt_revision_number
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optrev.value.number = revnum
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rpath = '/'.join([self.base, path]).strip('/')
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return ['%s/%s' % (path, x) for x in svn.client.ls(rpath, optrev, True, self.client_ctx).keys()]
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if hasattr(self, '_find_children_fallback'):
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return _find_children_fallback(path, revnum)
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self.reparent("/" + path)
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pool = Pool()
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children = []
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def find_children_inner(children, path, revnum = revnum):
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if hasattr(svn.ra, 'get_dir2'): # Since SVN 1.4
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fields = 0xffffffff # Binding does not provide SVN_DIRENT_ALL
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getdir = svn.ra.get_dir2(self.ra, path, revnum, fields, pool)
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else:
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getdir = svn.ra.get_dir(self.ra, path, revnum, pool)
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if type(getdir) == dict:
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# python binding for getdir is broken up to at least 1.4.3
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raise CompatibilityException()
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dirents = getdir[0]
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if type(dirents) == int:
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# got here once due to infinite recursion bug
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# pprint.pprint(getdir)
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return
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c = dirents.keys()
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c.sort()
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for child in c:
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dirent = dirents[child]
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if dirent.kind == svn.core.svn_node_dir:
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find_children_inner(children, (path + "/" + child).strip("/"))
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else:
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children.append((path + "/" + child).strip("/"))
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try:
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find_children_inner(children, "")
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except CompatibilityException:
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self._find_children_fallback = True
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self.reparent(self.module)
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return _find_children_fallback(path, revnum)
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self.reparent(self.module)
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return [path + "/" + c for c in children]
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