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|
import cPickle as pickle
import posixpath
import os
import tempfile
from mercurial import context
from mercurial import util as hgutil
from mercurial import revlog
from mercurial import node
import util
import maps
import editor
def pickle_atomic(data, file_path, dir=None):
"""pickle some data to a path atomically.
This is present because I kept corrupting my revmap by managing to hit ^C
during the pickle of that file.
"""
try:
f, path = tempfile.mkstemp(prefix='pickling', dir=dir)
f = os.fdopen(f, 'w')
pickle.dump(data, f)
f.close()
except: #pragma: no cover
raise
else:
hgutil.rename(path, file_path)
class SVNMeta(object):
def __init__(self, repo, uuid=None, subdir=None):
"""path is the path to the target hg repo.
subdir is the subdirectory of the edits *on the svn server*.
It is needed for stripping paths off in certain cases.
"""
self.ui = repo.ui
self.repo = repo
self.path = os.path.normpath(repo.join('..'))
if not os.path.isdir(self.meta_data_dir):
os.makedirs(self.meta_data_dir)
self.uuid = uuid
self.subdir = subdir
self.revmap = maps.RevMap(repo)
author_host = self.ui.config('hgsubversion', 'defaulthost', uuid)
authors = self.ui.config('hgsubversion', 'authormap')
tag_locations = self.ui.configlist('hgsubversion', 'tagpaths', ['tags'])
self.usebranchnames = self.ui.configbool('hgsubversion',
'usebranchnames', True)
branchmap = self.ui.config('hgsubversion', 'branchmap')
tagmap = self.ui.config('hgsubversion', 'tagmap')
self.branches = {}
if os.path.exists(self.branch_info_file):
f = open(self.branch_info_file)
self.branches = pickle.load(f)
f.close()
self.prevbranches = dict(self.branches)
self.tags = maps.Tags(repo)
if os.path.exists(self.tag_locations_file):
f = open(self.tag_locations_file)
self.tag_locations = pickle.load(f)
f.close()
else:
self.tag_locations = tag_locations
if os.path.exists(self.layoutfile):
f = open(self.layoutfile)
self._layout = f.read().strip()
f.close()
self.repo.ui.setconfig('hgsubversion', 'layout', self._layout)
else:
self._layout = None
pickle_atomic(self.tag_locations, self.tag_locations_file,
self.meta_data_dir)
# ensure nested paths are handled properly
self.tag_locations.sort()
self.tag_locations.reverse()
self.authors = maps.AuthorMap(self.ui, self.authors_file,
defaulthost=author_host)
if authors: self.authors.load(authors)
self.branchmap = maps.BranchMap(self.ui, self.branchmapfile)
if branchmap:
self.branchmap.load(branchmap)
self.tagmap = maps.TagMap(self.ui, self.tagmapfile)
if tagmap:
self.tagmap.load(tagmap)
self.lastdate = '1970-01-01 00:00:00 -0000'
self.filemap = maps.FileMap(repo)
self.addedtags = {}
self.deletedtags = {}
@property
def layout(self):
# this method can't determine the layout, but it needs to be
# resolved into something other than auto before this ever
# gets called
if not self._layout or self._layout == 'auto':
lo = self.repo.ui.config('hgsubversion', 'layout', default='auto')
if lo == 'auto':
raise hgutil.Abort('layout not yet determined')
self._layout = lo
f = open(self.layoutfile, 'w')
f.write(self._layout)
f.close()
return self._layout
@property
def editor(self):
if not hasattr(self, '_editor'):
self._editor = editor.HgEditor(self)
return self._editor
def _get_subdir(self):
return self.__subdir
def _set_subdir(self, subdir):
if subdir:
subdir = '/'.join(p for p in subdir.split('/') if p)
subdirfile = os.path.join(self.meta_data_dir, 'subdir')
if os.path.isfile(subdirfile):
stored_subdir = open(subdirfile).read()
assert stored_subdir is not None
if subdir is None:
self.__subdir = stored_subdir
elif subdir != stored_subdir:
raise hgutil.Abort('unable to work on a different path in the '
'repository')
else:
self.__subdir = subdir
elif subdir is not None:
f = open(subdirfile, 'w')
f.write(subdir)
f.close()
self.__subdir = subdir
else:
raise hgutil.Abort("hgsubversion metadata unavailable; "
"please run 'hg svn rebuildmeta'")
subdir = property(_get_subdir, _set_subdir, None,
'Error-checked sub-directory of source Subversion '
'repository.')
def _get_uuid(self):
return self.__uuid
def _set_uuid(self, uuid):
uuidfile = os.path.join(self.meta_data_dir, 'uuid')
if os.path.isfile(uuidfile):
stored_uuid = open(uuidfile).read()
assert stored_uuid
if uuid and uuid != stored_uuid:
raise hgutil.Abort('unable to operate on unrelated repository')
self.__uuid = uuid or stored_uuid
elif uuid:
f = open(uuidfile, 'w')
f.write(uuid)
f.close()
self.__uuid = uuid
else:
raise hgutil.Abort("hgsubversion metadata unavailable; "
"please run 'hg svn rebuildmeta'")
uuid = property(_get_uuid, _set_uuid, None,
'Error-checked UUID of source Subversion repository.')
@property
def meta_data_dir(self):
return os.path.join(self.path, '.hg', 'svn')
@property
def branch_info_file(self):
return os.path.join(self.meta_data_dir, 'branch_info')
@property
def tag_locations_file(self):
return os.path.join(self.meta_data_dir, 'tag_locations')
@property
def authors_file(self):
return os.path.join(self.meta_data_dir, 'authors')
@property
def branchmapfile(self):
return os.path.join(self.meta_data_dir, 'branchmap')
@property
def tagmapfile(self):
# called tag-renames for backwards compatibility
return os.path.join(self.meta_data_dir, 'tag-renames')
@property
def layoutfile(self):
return os.path.join(self.meta_data_dir, 'layout')
def fixdate(self, date):
if date is not None:
date = date.replace('T', ' ').replace('Z', '').split('.')[0]
date += ' -0000'
self.lastdate = date
else:
date = self.lastdate
return date
def save(self):
'''Save the Subversion metadata. This should really be called after
every revision is created.
'''
pickle_atomic(self.branches, self.branch_info_file, self.meta_data_dir)
def localname(self, path):
"""Compute the local name for a branch located at path.
"""
if self.layout == 'single':
return 'default'
if path == 'trunk':
return None
elif path.startswith('branches/'):
return path[len('branches/'):]
return '../%s' % path
def remotename(self, branch):
if self.layout == 'single':
return ''
if branch == 'default' or branch is None:
return 'trunk'
elif branch.startswith('../'):
return branch[3:]
return 'branches/%s' % branch
def genextra(self, revnum, branch):
extra = {}
subdir = self.subdir
if subdir and subdir[-1] == '/':
subdir = subdir[:-1]
if subdir and subdir[0] != '/':
subdir = '/' + subdir
if self.layout == 'single':
path = subdir or '/'
else:
branchpath = 'trunk'
if branch:
extra['branch'] = branch
if branch.startswith('../'):
branchpath = branch[3:]
else:
branchpath = 'branches/%s' % branch
path = '%s/%s' % (subdir, branchpath)
extra['convert_revision'] = 'svn:%(uuid)s%(path)s@%(rev)s' % {
'uuid': self.uuid,
'path': path,
'rev': revnum,
}
return extra
def mapbranch(self, extra, close=False):
if close:
extra['close'] = 1
mapped = self.branchmap.get(extra.get('branch', 'default'))
if not self.usebranchnames or mapped == 'default':
extra.pop('branch', None)
elif mapped:
extra['branch'] = mapped
if extra.get('branch') == 'default':
extra.pop('branch', None)
def normalize(self, path):
'''Normalize a path to strip of leading slashes and our subdir if we
have one.
'''
if self.subdir and path == self.subdir[:-1]:
return ''
if path and path[0] == '/':
path = path[1:]
if path and path.startswith(self.subdir):
path = path[len(self.subdir):]
if path and path[0] == '/':
path = path[1:]
return path
def get_path_tag(self, path):
"""If path could represent the path to a tag, returns the
potential (non-empty) tag name. Otherwise, returns None
Note that it's only a tag if it was copied from the path '' in a branch
(or tag) we have, for our purposes.
"""
if self.layout != 'single':
path = self.normalize(path)
for tagspath in self.tag_locations:
if path.startswith(tagspath + '/'):
tag = path[len(tagspath) + 1:]
if tag:
return tag
return None
def split_branch_path(self, path, existing=True):
"""Figure out which branch inside our repo this path represents, and
also figure out which path inside that branch it is.
Returns a tuple of (path within branch, local branch name, server-side
branch path).
Note that tag paths can also be matched: assuming tags/tag-1.1
is a tag then:
tags/tag-1.1 => ('', '../tags/tag-1.1', 'tags/tag-1.1')
tags/tag-1.1/file => ('file', '../tags/tag-1.1', 'tags/tag-1.1')
tags/tag-1.2 => (None, None, None)
If existing=True, will return None, None, None if the file isn't on
some known branch. If existing=False, then it will guess what the
branch would be if it were known. Server-side branch path should be
relative to our subdirectory.
"""
path = self.normalize(path)
if self.layout == 'single':
return (path, None, '')
tag = self.get_path_tag(path)
if tag:
# consider the new tags when dispatching entries
matched = []
for tags in (self.tags, self.addedtags):
matched += [t for t in tags
if (tag == t or tag.startswith(t + '/'))]
if not matched:
return None, None, None
matched.sort(key=len, reverse=True)
if tag == matched[0]:
brpath = ''
svrpath = path
else:
brpath = tag[len(matched[0])+1:]
svrpath = path[:-(len(brpath)+1)]
ln = self.localname(svrpath)
return brpath, ln, svrpath
test = ''
path_comps = path.split('/')
while self.localname(test) not in self.branches and len(path_comps):
if not test:
test = path_comps.pop(0)
else:
test += '/%s' % path_comps.pop(0)
if self.localname(test) in self.branches:
return path[len(test)+1:], self.localname(test), test
if existing:
return None, None, None
if path == 'trunk' or path.startswith('trunk/'):
path = path.split('/')[1:]
test = 'trunk'
elif path.startswith('branches/'):
elts = path.split('/')
test = '/'.join(elts[:2])
path = '/'.join(elts[2:])
else:
path = test.split('/')[-1]
test = '/'.join(test.split('/')[:-1])
ln = self.localname(test)
if ln and ln.startswith('../'):
return None, None, None
return path, ln, test
def _determine_parent_branch(self, p, src_path, src_rev, revnum):
if src_path is not None:
src_file, src_branch = self.split_branch_path(src_path)[:2]
src_tag = self.get_path_tag(src_path)
if src_tag or src_file == '':
ln = self.localname(p)
if src_tag in self.tags:
changeid = self.tags[src_tag]
src_rev, src_branch = self.get_source_rev(changeid)[:2]
return {ln: (src_branch, src_rev, revnum)}
return {}
def is_path_valid(self, path):
if path is None:
return False
subpath = self.split_branch_path(path)[0]
if subpath is None:
return False
return subpath in self.filemap
def get_parent_svn_branch_and_rev(self, number, branch, exact=False):
"""Return the parent revision of branch at number as a tuple
(parentnum, parentbranch) or (None, None) if undefined.
By default, current revision copy records will be used to resolve
the parent. For instance, if branch1 is replaced by branch2 in
current revision, then the parent of current revision on branch1
will be branch2. In this case, use exact=True to select the
existing branch before looking at the copy records.
"""
if (number, branch) in self.revmap:
return number, branch
real_num = 0
for num, br in self.revmap.iterkeys():
if br != branch:
continue
if num <= number and num > real_num:
real_num = num
if branch in self.branches:
parent_branch = self.branches[branch][0]
parent_branch_rev = self.branches[branch][1]
# check to see if this branch already existed and is the same
if parent_branch_rev < real_num:
return real_num, branch
# if that wasn't true, then this is the a new branch with the
# same name as some old deleted branch
if parent_branch_rev <= 0 and real_num == 0:
return None, None
branch_created_rev = self.branches[branch][2]
if parent_branch == 'trunk':
parent_branch = None
if branch_created_rev <= number + 1 and branch != parent_branch:
# did the branch exist in previous run
if exact and branch in self.prevbranches:
if self.prevbranches[branch][1] < real_num:
return real_num, branch
return self.get_parent_svn_branch_and_rev(
parent_branch_rev, parent_branch)
if real_num != 0:
return real_num, branch
return None, None
def get_parent_revision(self, number, branch, exact=False):
'''Get the parent revision hash for a commit on a specific branch.
'''
tag = self.get_path_tag(self.remotename(branch))
if tag:
# Reference a tag being created
if tag in self.addedtags:
tbranch, trev = self.addedtags[tag]
fromtag = self.get_path_tag(self.remotename(tbranch))
if not fromtag:
# Created from a regular branch, not another tag
tagged = self.get_parent_svn_branch_and_rev(trev, tbranch)
return node.hex(self.revmap[tagged])
tag = fromtag
# Reference an existing tag
limitedtags = maps.Tags(self.repo, endrev=number - 1)
if tag in limitedtags:
return limitedtags[tag]
r, br = self.get_parent_svn_branch_and_rev(number - 1, branch, exact)
if r is not None:
return self.revmap[r, br]
return revlog.nullid
def get_source_rev(self, changeid=None, ctx=None):
"""Return the source svn revision, the branch name and the svn
branch path or a converted changeset. If supplied revision
has no conversion record, raise KeyError.
If ctx is None, build one from supplied changeid
"""
if ctx is None:
ctx = self.repo[changeid]
extra = ctx.extra()
if 'convert_revision' not in extra:
raise KeyError('%s has no conversion record' % ctx)
branchpath, revnum = extra['convert_revision'][40:].rsplit('@', 1)
branch = self.localname(self.normalize(branchpath))
if self.layout == 'single':
branchpath = ''
if branchpath and branchpath[0] == '/':
branchpath = branchpath[1:]
return int(revnum), branch, branchpath
def update_branch_tag_map_for_rev(self, revision):
"""Given a revision object, determine changes to branches.
Returns: a dict of {
'branches': (added_branches, self.closebranches),
} where adds are dicts where the keys are branch names and
values are the place the branch came from. The deletions are
sets of the deleted branches.
"""
if self.layout == 'single':
return {'branches': ({None: (None, 0, -1), }, set()),
}
paths = revision.paths
added_branches = {}
# Reset the tags delta before detecting the new one, and take
# care not to fill them until done since split_branch_path()
# use them.
self.addedtags, self.deletedtags = {}, {}
addedtags, deletedtags = {}, {}
self.closebranches = set()
for p in sorted(paths):
t_name = self.get_path_tag(p)
if t_name:
src_p, src_rev = paths[p].copyfrom_path, paths[p].copyfrom_rev
if src_p is not None and src_rev is not None:
file, branch = self.split_branch_path(src_p)[:2]
from_tag = self.get_path_tag(src_p)
if file is None and not from_tag:
continue
if from_tag and from_tag not in self.tags:
# Ignore copies from unknown tags
continue
if not file:
# Direct branch or tag copy
if from_tag:
changeid = self.tags[from_tag]
src_rev, branch = self.get_source_rev(changeid)[:2]
if t_name not in addedtags:
addedtags[t_name] = branch, src_rev
else:
# Subbranch or subtag copy
t_name = t_name[:-(len(file)+1)]
found = t_name in addedtags
if found and src_rev > addedtags[t_name][1]:
addedtags[t_name] = branch, src_rev
elif (paths[p].action == 'D' and p.endswith(t_name)
and t_name in self.tags):
branch = self.get_source_rev(self.tags[t_name])[1]
deletedtags[t_name] = branch, None
continue
# At this point we know the path is not a tag. In that
# case, we only care if it is the root of a new branch (in
# this function). This is determined by the following
# checks:
# 1. Is the file located inside any currently known
# branch? If yes, then we're done with it, this isn't
# interesting.
# 2. Does the file have copyfrom information? If yes, then
# we're done: this is a new branch, and we record the
# copyfrom in added_branches if it comes from the root
# of another branch, or create it from scratch.
# 3. Neither of the above. This could be a branch, but it
# might never work out for us. It's only ever a branch
# (as far as we're concerned) if it gets committed to,
# which we have to detect at file-write time anyway. So
# we do nothing here.
# 4. It's the root of an already-known branch, with an
# action of 'D'. We mark the branch as deleted.
# 5. It's the parent directory of one or more
# already-known branches, so we mark them as deleted.
# 6. It's a branch being replaced by another branch - the
# action will be 'R'.
fi, br = self.split_branch_path(p)[:2]
if fi is not None:
if fi == '':
if paths[p].action == 'D':
self.closebranches.add(br) # case 4
elif paths[p].action == 'R':
parent = self._determine_parent_branch(
p, paths[p].copyfrom_path, paths[p].copyfrom_rev,
revision.revnum)
added_branches.update(parent)
continue # case 1
if paths[p].action == 'D':
for known in self.branches:
if self.remotename(known).startswith(p):
self.closebranches.add(known) # case 5
parent = self._determine_parent_branch(
p, paths[p].copyfrom_path, paths[p].copyfrom_rev,
revision.revnum)
if not parent and paths[p].copyfrom_path:
bpath, branch = self.split_branch_path(p, False)[:2]
if (bpath is not None
and branch not in self.branches
and branch not in added_branches):
parent = {branch: (None, 0, revision.revnum)}
elif bpath is None:
srcpath = paths[p].copyfrom_path
srcrev = paths[p].copyfrom_rev
parent = {}
for br in self.branches:
rn = self.remotename(br)
if rn.startswith(srcpath[1:] + '/'):
bname = posixpath.basename(rn)
newbr = posixpath.join(p, bname)
parent.update(
self._determine_parent_branch(
newbr, rn, srcrev, revision.revnum))
added_branches.update(parent)
self.addedtags, self.deletedtags = addedtags, deletedtags
return {
'branches': (added_branches, self.closebranches),
}
def save_tbdelta(self, tbdelta):
self.prevbranches = dict(self.branches)
for br in tbdelta['branches'][1]:
del self.branches[br]
self.branches.update(tbdelta['branches'][0])
def movetag(self, tag, hash, rev, date):
if tag in self.tags and self.tags[tag] == hash:
return
# determine branch from earliest unclosed ancestor
branchparent = self.repo[hash]
while branchparent.extra().get('close'):
branchparent = branchparent.parents()[0]
branch = self.get_source_rev(ctx=branchparent)[1]
parentctx = self.repo[self.get_parent_revision(rev.revnum + 1, branch)]
if '.hgtags' in parentctx:
tagdata = parentctx.filectx('.hgtags').data()
else:
tagdata = ''
tagdata += '%s %s\n' % (node.hex(hash), self.tagmap.get(tag, tag))
def hgtagsfn(repo, memctx, path):
assert path == '.hgtags'
return context.memfilectx(path=path,
data=tagdata,
islink=False,
isexec=False,
copied=False)
revnum, branch = self.get_source_rev(ctx=parentctx)[:2]
newparent = None
for child in parentctx.children():
if (self.get_source_rev(ctx=child)[1] == branch
and child.extra().get('close', False)):
newparent = child
if newparent:
parentctx = newparent
revnum, branch = self.get_source_rev(ctx=parentctx)[:2]
ctx = context.memctx(self.repo,
(parentctx.node(), node.nullid),
rev.message or util.default_commit_msg(self.ui),
['.hgtags', ],
hgtagsfn,
self.authors[rev.author],
date,
parentctx.extra())
new_hash = self.repo.svn_commitctx(ctx)
if not newparent:
assert self.revmap[revnum, branch] == parentctx.node()
self.revmap[revnum, branch] = new_hash
self.tags[tag] = hash, rev.revnum
util.describe_commit(self.ui, new_hash, branch)
def committags(self, rev, endbranches):
if not self.addedtags and not self.deletedtags:
return
date = self.fixdate(rev.date)
# determine additions/deletions per branch
branches = {}
for tags in (self.addedtags, self.deletedtags):
for tag, (branch, srcrev) in tags.iteritems():
op = srcrev is None and 'rm' or 'add'
branches.setdefault(branch, []).append((op, tag, srcrev))
for b, tags in branches.iteritems():
# modify parent's .hgtags source
parent = self.repo[self.get_parent_revision(rev.revnum, b)]
if '.hgtags' not in parent:
src = ''
else:
src = parent['.hgtags'].data()
fromtag = self.get_path_tag(self.remotename(b))
for op, tag, r in sorted(tags, reverse=True):
if tag in self.tagmap and not self.tagmap[tag]:
continue
tagged = node.hex(node.nullid) # op != 'add'
if op == 'add':
if fromtag:
if fromtag in self.tags:
tagged = node.hex(self.tags[fromtag])
else:
tagged = node.hex(self.revmap[
self.get_parent_svn_branch_and_rev(r, b)])
src += '%s %s\n' % (tagged, self.tagmap.get(tag, tag))
self.tags[tag] = node.bin(tagged), rev.revnum
# add new changeset containing updated .hgtags
def fctxfun(repo, memctx, path):
return context.memfilectx(path='.hgtags', data=src,
islink=False, isexec=False,
copied=None)
extra = self.genextra(rev.revnum, b)
if fromtag:
extra['branch'] = parent.extra().get('branch', 'default')
self.mapbranch(extra, b in endbranches or fromtag)
ctx = context.memctx(self.repo,
(parent.node(), node.nullid),
rev.message or ' ',
['.hgtags'],
fctxfun,
self.authors[rev.author],
date,
extra)
new = self.repo.svn_commitctx(ctx)
if not fromtag and (rev.revnum, b) not in self.revmap:
self.revmap[rev.revnum, b] = new
if b in endbranches:
endbranches.pop(b)
bname = b or 'default'
self.ui.status('Marked branch %s as closed.\n' % bname)
def delbranch(self, branch, node, rev):
pctx = self.repo[node]
files = pctx.manifest().keys()
extra = self.genextra(rev.revnum, branch)
self.mapbranch(extra, True)
ctx = context.memctx(self.repo,
(node, revlog.nullid),
rev.message or util.default_commit_msg(self.ui),
[],
lambda x, y, z: None,
self.authors[rev.author],
self.fixdate(rev.date),
extra)
new = self.repo.svn_commitctx(ctx)
self.ui.status('Marked branch %s as closed.\n' % (branch or 'default'))
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