/usr/share/pyshared/hgext/git/overlay.py is in mercurial-git 0.4.0-2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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# unifies access to unimported git objects and committed hg objects
# designed to support incoming
#
# incomplete, implemented on demand
from mercurial import context
from mercurial.node import bin, hex, nullid
class overlaymanifest(object):
def __init__(self, repo, sha):
self.repo = repo
self.tree = repo.handler.git.get_object(sha)
self._map = None
self._flagmap = None
def withflags(self):
self.load()
return set([path for path, flag in self._flagmap.iteritems()
if flag & 020100])
def copy(self):
return overlaymanifest(self.repo, self.tree.id)
def keys(self):
self.load()
return self._map.keys()
def flags(self, path):
self.load()
def hgflag(gitflag):
if gitflag & 0100:
return 'x'
elif gitflag & 020000:
return 'l'
else:
return ''
return hgflag(self._flagmap[path])
def load(self):
if self._map is not None:
return
self._map = {}
self._flagmap = {}
def addtree(tree, dirname):
for entry in tree.iteritems():
if entry.mode & 040000:
# expand directory
subtree = self.repo.handler.git.get_object(entry.sha)
addtree(subtree, dirname + entry.path + '/')
else:
path = dirname + entry.path
self._map[path] = bin(entry.sha)
self._flagmap[path] = entry.mode
addtree(self.tree, '')
def __iter__(self):
self.load()
return self._map.__iter__()
def __getitem__(self, path):
self.load()
return self._map[path]
def __delitem__(self, path):
del self._map[path]
class overlayfilectx(object):
def __init__(self, repo, path, fileid=None):
self.repo = repo
self._path = path
self.fileid = fileid
# this is a hack to skip copy detection
def ancestors(self):
return [self, self]
def rev(self):
return -1
def path(self):
return self._path
def filelog(self):
return self.fileid
def data(self):
blob = self.repo.handler.git.get_object(self.fileid)
return blob.data
class overlaychangectx(context.changectx):
def __init__(self, repo, sha):
self.repo = repo
self.commit = repo.handler.git.get_object(sha)
def node(self):
return bin(self.commit.id)
def rev(self):
return self.repo.rev(bin(self.commit.id))
def date(self):
return self.commit.author_time, self.commit.author_timezone
def branch(self):
return 'default'
def user(self):
return self.commit.author
def files(self):
return []
def extra(self):
return {}
def description(self):
return self.commit.message
def parents(self):
return [overlaychangectx(self.repo, sha) for sha in self.commit.parents]
def manifestnode(self):
return bin(self.commit.tree)
def hex(self):
return self.commit.id
def tags(self):
return []
def bookmarks(self):
return []
def manifest(self):
return overlaymanifest(self.repo, self.commit.tree)
def filectx(self, path, filelog=None):
mf = self.manifest()
return overlayfilectx(self.repo, path, mf[path])
def flags(self, path):
mf = self.manifest()
return mf.flags(path)
def __nonzero__(self):
return True
def phase(self):
try:
from mercurial import phases
return phases.draft
except ImportError:
return 1
class overlayrevlog(object):
def __init__(self, repo, base):
self.repo = repo
self.base = base
def parents(self, n):
gitrev = self.repo.revmap.get(n)
if not gitrev:
# we've reached a revision we have
return self.base.parents(n)
commit = self.repo.handler.git.get_object(n)
def gitorhg(n):
hn = self.repo.handler.map_hg_get(hex(n))
if hn is not None:
return bin(hn)
return n
# currently ignores the octopus
p1 = gitorhg(bin(commit.parents[0]))
if len(commit.parents) > 1:
p2 = gitorhg(bin(commit.parents[1]))
else:
p2 = nullid
return [p1, p2]
def parentrevs(self, rev):
return [self.rev(p) for p in self.parents(self.node(rev))]
def node(self, rev):
gitnode = self.repo.nodemap.get(rev)
if gitnode is None:
return self.base.node(rev)
return gitnode
def rev(self, n):
gitrev = self.repo.revmap.get(n)
if gitrev is None:
return self.base.rev(n)
return gitrev
def nodesbetween(self, nodelist, revs):
# this is called by pre-1.9 incoming with the nodelist we returned from
# getremotechanges. Just return it back.
return [nodelist]
def __len__(self):
return len(self.repo.handler.repo) + len(self.repo.revmap)
class overlayrepo(object):
def __init__(self, handler, commits, refs):
self.handler = handler
self.changelog = overlayrevlog(self, handler.repo.changelog)
self.manifest = overlayrevlog(self, handler.repo.manifest)
# for incoming -p
self.root = handler.repo.root
self.getcwd = handler.repo.getcwd
self.status = handler.repo.status
self.ui = handler.repo.ui
self.revmap = None
self.nodemap = None
self.refmap = None
self.tagmap = None
self._makemaps(commits, refs)
def __getitem__(self, n):
if n not in self.revmap:
return self.handler.repo[n]
return overlaychangectx(self, n)
def node(self, n):
"""Returns an Hg or Git hash for the specified Git hash"""
if bin(n) in self.revmap:
return n
return self.handler.map_hg_get(n)
def nodebookmarks(self, n):
return self.refmap.get(n, [])
def nodetags(self, n):
return self.tagmap.get(n, [])
def rev(self, n):
return self.revmap[n]
def filectx(self, path, fileid=None):
return overlayfilectx(self, path, fileid=fileid)
def _makemaps(self, commits, refs):
baserev = self.handler.repo['tip'].rev()
self.revmap = {}
self.nodemap = {}
for i, n in enumerate(commits):
rev = baserev + i + 1
self.revmap[n] = rev
self.nodemap[rev] = n
self.refmap = {}
self.tagmap = {}
for ref in refs:
if ref.startswith('refs/heads/'):
refname = ref[11:]
self.refmap.setdefault(bin(refs[ref]), []).append(refname)
elif ref.startswith('refs/tags/'):
tagname = ref[10:]
self.tagmap.setdefault(bin(refs[ref]), []).append(tagname)
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