mirror of https://github.com/morpheus65535/bazarr
680 lines
26 KiB
Python
680 lines
26 KiB
Python
![]() |
import os
|
||
|
|
||
|
from git.compat import (
|
||
|
string_types,
|
||
|
defenc
|
||
|
)
|
||
|
from git.objects import Object, Commit
|
||
|
from git.util import (
|
||
|
join_path,
|
||
|
join_path_native,
|
||
|
to_native_path_linux,
|
||
|
assure_directory_exists,
|
||
|
hex_to_bin,
|
||
|
LockedFD
|
||
|
)
|
||
|
from gitdb.exc import (
|
||
|
BadObject,
|
||
|
BadName
|
||
|
)
|
||
|
|
||
|
import os.path as osp
|
||
|
|
||
|
from .log import RefLog
|
||
|
|
||
|
|
||
|
__all__ = ["SymbolicReference"]
|
||
|
|
||
|
|
||
|
def _git_dir(repo, path):
|
||
|
""" Find the git dir that's appropriate for the path"""
|
||
|
name = "%s" % (path,)
|
||
|
if name in ['HEAD', 'ORIG_HEAD', 'FETCH_HEAD', 'index', 'logs']:
|
||
|
return repo.git_dir
|
||
|
return repo.common_dir
|
||
|
|
||
|
|
||
|
class SymbolicReference(object):
|
||
|
|
||
|
"""Represents a special case of a reference such that this reference is symbolic.
|
||
|
It does not point to a specific commit, but to another Head, which itself
|
||
|
specifies a commit.
|
||
|
|
||
|
A typical example for a symbolic reference is HEAD."""
|
||
|
__slots__ = ("repo", "path")
|
||
|
_resolve_ref_on_create = False
|
||
|
_points_to_commits_only = True
|
||
|
_common_path_default = ""
|
||
|
_remote_common_path_default = "refs/remotes"
|
||
|
_id_attribute_ = "name"
|
||
|
|
||
|
def __init__(self, repo, path):
|
||
|
self.repo = repo
|
||
|
self.path = path
|
||
|
|
||
|
def __str__(self):
|
||
|
return self.path
|
||
|
|
||
|
def __repr__(self):
|
||
|
return '<git.%s "%s">' % (self.__class__.__name__, self.path)
|
||
|
|
||
|
def __eq__(self, other):
|
||
|
if hasattr(other, 'path'):
|
||
|
return self.path == other.path
|
||
|
return False
|
||
|
|
||
|
def __ne__(self, other):
|
||
|
return not (self == other)
|
||
|
|
||
|
def __hash__(self):
|
||
|
return hash(self.path)
|
||
|
|
||
|
@property
|
||
|
def name(self):
|
||
|
"""
|
||
|
:return:
|
||
|
In case of symbolic references, the shortest assumable name
|
||
|
is the path itself."""
|
||
|
return self.path
|
||
|
|
||
|
@property
|
||
|
def abspath(self):
|
||
|
return join_path_native(_git_dir(self.repo, self.path), self.path)
|
||
|
|
||
|
@classmethod
|
||
|
def _get_packed_refs_path(cls, repo):
|
||
|
return osp.join(repo.common_dir, 'packed-refs')
|
||
|
|
||
|
@classmethod
|
||
|
def _iter_packed_refs(cls, repo):
|
||
|
"""Returns an iterator yielding pairs of sha1/path pairs (as bytes) for the corresponding refs.
|
||
|
:note: The packed refs file will be kept open as long as we iterate"""
|
||
|
try:
|
||
|
with open(cls._get_packed_refs_path(repo), 'rt') as fp:
|
||
|
for line in fp:
|
||
|
line = line.strip()
|
||
|
if not line:
|
||
|
continue
|
||
|
if line.startswith('#'):
|
||
|
# "# pack-refs with: peeled fully-peeled sorted"
|
||
|
# the git source code shows "peeled",
|
||
|
# "fully-peeled" and "sorted" as the keywords
|
||
|
# that can go on this line, as per comments in git file
|
||
|
# refs/packed-backend.c
|
||
|
# I looked at master on 2017-10-11,
|
||
|
# commit 111ef79afe, after tag v2.15.0-rc1
|
||
|
# from repo https://github.com/git/git.git
|
||
|
if line.startswith('# pack-refs with:') and 'peeled' not in line:
|
||
|
raise TypeError("PackingType of packed-Refs not understood: %r" % line)
|
||
|
# END abort if we do not understand the packing scheme
|
||
|
continue
|
||
|
# END parse comment
|
||
|
|
||
|
# skip dereferenced tag object entries - previous line was actual
|
||
|
# tag reference for it
|
||
|
if line[0] == '^':
|
||
|
continue
|
||
|
|
||
|
yield tuple(line.split(' ', 1))
|
||
|
# END for each line
|
||
|
except (OSError, IOError):
|
||
|
return
|
||
|
# END no packed-refs file handling
|
||
|
# NOTE: Had try-finally block around here to close the fp,
|
||
|
# but some python version wouldn't allow yields within that.
|
||
|
# I believe files are closing themselves on destruction, so it is
|
||
|
# alright.
|
||
|
|
||
|
@classmethod
|
||
|
def dereference_recursive(cls, repo, ref_path):
|
||
|
"""
|
||
|
:return: hexsha stored in the reference at the given ref_path, recursively dereferencing all
|
||
|
intermediate references as required
|
||
|
:param repo: the repository containing the reference at ref_path"""
|
||
|
while True:
|
||
|
hexsha, ref_path = cls._get_ref_info(repo, ref_path)
|
||
|
if hexsha is not None:
|
||
|
return hexsha
|
||
|
# END recursive dereferencing
|
||
|
|
||
|
@classmethod
|
||
|
def _get_ref_info_helper(cls, repo, ref_path):
|
||
|
"""Return: (str(sha), str(target_ref_path)) if available, the sha the file at
|
||
|
rela_path points to, or None. target_ref_path is the reference we
|
||
|
point to, or None"""
|
||
|
tokens = None
|
||
|
repodir = _git_dir(repo, ref_path)
|
||
|
try:
|
||
|
with open(osp.join(repodir, ref_path), 'rt') as fp:
|
||
|
value = fp.read().rstrip()
|
||
|
# Don't only split on spaces, but on whitespace, which allows to parse lines like
|
||
|
# 60b64ef992065e2600bfef6187a97f92398a9144 branch 'master' of git-server:/path/to/repo
|
||
|
tokens = value.split()
|
||
|
assert(len(tokens) != 0)
|
||
|
except (OSError, IOError):
|
||
|
# Probably we are just packed, find our entry in the packed refs file
|
||
|
# NOTE: We are not a symbolic ref if we are in a packed file, as these
|
||
|
# are excluded explicitly
|
||
|
for sha, path in cls._iter_packed_refs(repo):
|
||
|
if path != ref_path:
|
||
|
continue
|
||
|
# sha will be used
|
||
|
tokens = sha, path
|
||
|
break
|
||
|
# END for each packed ref
|
||
|
# END handle packed refs
|
||
|
if tokens is None:
|
||
|
raise ValueError("Reference at %r does not exist" % ref_path)
|
||
|
|
||
|
# is it a reference ?
|
||
|
if tokens[0] == 'ref:':
|
||
|
return (None, tokens[1])
|
||
|
|
||
|
# its a commit
|
||
|
if repo.re_hexsha_only.match(tokens[0]):
|
||
|
return (tokens[0], None)
|
||
|
|
||
|
raise ValueError("Failed to parse reference information from %r" % ref_path)
|
||
|
|
||
|
@classmethod
|
||
|
def _get_ref_info(cls, repo, ref_path):
|
||
|
"""Return: (str(sha), str(target_ref_path)) if available, the sha the file at
|
||
|
rela_path points to, or None. target_ref_path is the reference we
|
||
|
point to, or None"""
|
||
|
return cls._get_ref_info_helper(repo, ref_path)
|
||
|
|
||
|
def _get_object(self):
|
||
|
"""
|
||
|
:return:
|
||
|
The object our ref currently refers to. Refs can be cached, they will
|
||
|
always point to the actual object as it gets re-created on each query"""
|
||
|
# have to be dynamic here as we may be a tag which can point to anything
|
||
|
# Our path will be resolved to the hexsha which will be used accordingly
|
||
|
return Object.new_from_sha(self.repo, hex_to_bin(self.dereference_recursive(self.repo, self.path)))
|
||
|
|
||
|
def _get_commit(self):
|
||
|
"""
|
||
|
:return:
|
||
|
Commit object we point to, works for detached and non-detached
|
||
|
SymbolicReferences. The symbolic reference will be dereferenced recursively."""
|
||
|
obj = self._get_object()
|
||
|
if obj.type == 'tag':
|
||
|
obj = obj.object
|
||
|
# END dereference tag
|
||
|
|
||
|
if obj.type != Commit.type:
|
||
|
raise TypeError("Symbolic Reference pointed to object %r, commit was required" % obj)
|
||
|
# END handle type
|
||
|
return obj
|
||
|
|
||
|
def set_commit(self, commit, logmsg=None):
|
||
|
"""As set_object, but restricts the type of object to be a Commit
|
||
|
|
||
|
:raise ValueError: If commit is not a Commit object or doesn't point to
|
||
|
a commit
|
||
|
:return: self"""
|
||
|
# check the type - assume the best if it is a base-string
|
||
|
invalid_type = False
|
||
|
if isinstance(commit, Object):
|
||
|
invalid_type = commit.type != Commit.type
|
||
|
elif isinstance(commit, SymbolicReference):
|
||
|
invalid_type = commit.object.type != Commit.type
|
||
|
else:
|
||
|
try:
|
||
|
invalid_type = self.repo.rev_parse(commit).type != Commit.type
|
||
|
except (BadObject, BadName):
|
||
|
raise ValueError("Invalid object: %s" % commit)
|
||
|
# END handle exception
|
||
|
# END verify type
|
||
|
|
||
|
if invalid_type:
|
||
|
raise ValueError("Need commit, got %r" % commit)
|
||
|
# END handle raise
|
||
|
|
||
|
# we leave strings to the rev-parse method below
|
||
|
self.set_object(commit, logmsg)
|
||
|
|
||
|
return self
|
||
|
|
||
|
def set_object(self, object, logmsg=None): # @ReservedAssignment
|
||
|
"""Set the object we point to, possibly dereference our symbolic reference first.
|
||
|
If the reference does not exist, it will be created
|
||
|
|
||
|
:param object: a refspec, a SymbolicReference or an Object instance. SymbolicReferences
|
||
|
will be dereferenced beforehand to obtain the object they point to
|
||
|
:param logmsg: If not None, the message will be used in the reflog entry to be
|
||
|
written. Otherwise the reflog is not altered
|
||
|
:note: plain SymbolicReferences may not actually point to objects by convention
|
||
|
:return: self"""
|
||
|
if isinstance(object, SymbolicReference):
|
||
|
object = object.object # @ReservedAssignment
|
||
|
# END resolve references
|
||
|
|
||
|
is_detached = True
|
||
|
try:
|
||
|
is_detached = self.is_detached
|
||
|
except ValueError:
|
||
|
pass
|
||
|
# END handle non-existing ones
|
||
|
|
||
|
if is_detached:
|
||
|
return self.set_reference(object, logmsg)
|
||
|
|
||
|
# set the commit on our reference
|
||
|
return self._get_reference().set_object(object, logmsg)
|
||
|
|
||
|
commit = property(_get_commit, set_commit, doc="Query or set commits directly")
|
||
|
object = property(_get_object, set_object, doc="Return the object our ref currently refers to")
|
||
|
|
||
|
def _get_reference(self):
|
||
|
""":return: Reference Object we point to
|
||
|
:raise TypeError: If this symbolic reference is detached, hence it doesn't point
|
||
|
to a reference, but to a commit"""
|
||
|
sha, target_ref_path = self._get_ref_info(self.repo, self.path)
|
||
|
if target_ref_path is None:
|
||
|
raise TypeError("%s is a detached symbolic reference as it points to %r" % (self, sha))
|
||
|
return self.from_path(self.repo, target_ref_path)
|
||
|
|
||
|
def set_reference(self, ref, logmsg=None):
|
||
|
"""Set ourselves to the given ref. It will stay a symbol if the ref is a Reference.
|
||
|
Otherwise an Object, given as Object instance or refspec, is assumed and if valid,
|
||
|
will be set which effectively detaches the refererence if it was a purely
|
||
|
symbolic one.
|
||
|
|
||
|
:param ref: SymbolicReference instance, Object instance or refspec string
|
||
|
Only if the ref is a SymbolicRef instance, we will point to it. Everything
|
||
|
else is dereferenced to obtain the actual object.
|
||
|
:param logmsg: If set to a string, the message will be used in the reflog.
|
||
|
Otherwise, a reflog entry is not written for the changed reference.
|
||
|
The previous commit of the entry will be the commit we point to now.
|
||
|
|
||
|
See also: log_append()
|
||
|
|
||
|
:return: self
|
||
|
:note: This symbolic reference will not be dereferenced. For that, see
|
||
|
``set_object(...)``"""
|
||
|
write_value = None
|
||
|
obj = None
|
||
|
if isinstance(ref, SymbolicReference):
|
||
|
write_value = "ref: %s" % ref.path
|
||
|
elif isinstance(ref, Object):
|
||
|
obj = ref
|
||
|
write_value = ref.hexsha
|
||
|
elif isinstance(ref, string_types):
|
||
|
try:
|
||
|
obj = self.repo.rev_parse(ref + "^{}") # optionally deref tags
|
||
|
write_value = obj.hexsha
|
||
|
except (BadObject, BadName):
|
||
|
raise ValueError("Could not extract object from %s" % ref)
|
||
|
# END end try string
|
||
|
else:
|
||
|
raise ValueError("Unrecognized Value: %r" % ref)
|
||
|
# END try commit attribute
|
||
|
|
||
|
# typecheck
|
||
|
if obj is not None and self._points_to_commits_only and obj.type != Commit.type:
|
||
|
raise TypeError("Require commit, got %r" % obj)
|
||
|
# END verify type
|
||
|
|
||
|
oldbinsha = None
|
||
|
if logmsg is not None:
|
||
|
try:
|
||
|
oldbinsha = self.commit.binsha
|
||
|
except ValueError:
|
||
|
oldbinsha = Commit.NULL_BIN_SHA
|
||
|
# END handle non-existing
|
||
|
# END retrieve old hexsha
|
||
|
|
||
|
fpath = self.abspath
|
||
|
assure_directory_exists(fpath, is_file=True)
|
||
|
|
||
|
lfd = LockedFD(fpath)
|
||
|
fd = lfd.open(write=True, stream=True)
|
||
|
ok = True
|
||
|
try:
|
||
|
fd.write(write_value.encode('ascii') + b'\n')
|
||
|
lfd.commit()
|
||
|
ok = True
|
||
|
finally:
|
||
|
if not ok:
|
||
|
lfd.rollback()
|
||
|
# Adjust the reflog
|
||
|
if logmsg is not None:
|
||
|
self.log_append(oldbinsha, logmsg)
|
||
|
|
||
|
return self
|
||
|
|
||
|
# aliased reference
|
||
|
reference = property(_get_reference, set_reference, doc="Returns the Reference we point to")
|
||
|
ref = reference
|
||
|
|
||
|
def is_valid(self):
|
||
|
"""
|
||
|
:return:
|
||
|
True if the reference is valid, hence it can be read and points to
|
||
|
a valid object or reference."""
|
||
|
try:
|
||
|
self.object
|
||
|
except (OSError, ValueError):
|
||
|
return False
|
||
|
else:
|
||
|
return True
|
||
|
|
||
|
@property
|
||
|
def is_detached(self):
|
||
|
"""
|
||
|
:return:
|
||
|
True if we are a detached reference, hence we point to a specific commit
|
||
|
instead to another reference"""
|
||
|
try:
|
||
|
self.ref
|
||
|
return False
|
||
|
except TypeError:
|
||
|
return True
|
||
|
|
||
|
def log(self):
|
||
|
"""
|
||
|
:return: RefLog for this reference. Its last entry reflects the latest change
|
||
|
applied to this reference
|
||
|
|
||
|
.. note:: As the log is parsed every time, its recommended to cache it for use
|
||
|
instead of calling this method repeatedly. It should be considered read-only."""
|
||
|
return RefLog.from_file(RefLog.path(self))
|
||
|
|
||
|
def log_append(self, oldbinsha, message, newbinsha=None):
|
||
|
"""Append a logentry to the logfile of this ref
|
||
|
|
||
|
:param oldbinsha: binary sha this ref used to point to
|
||
|
:param message: A message describing the change
|
||
|
:param newbinsha: The sha the ref points to now. If None, our current commit sha
|
||
|
will be used
|
||
|
:return: added RefLogEntry instance"""
|
||
|
# NOTE: we use the committer of the currently active commit - this should be
|
||
|
# correct to allow overriding the committer on a per-commit level.
|
||
|
# See https://github.com/gitpython-developers/GitPython/pull/146
|
||
|
try:
|
||
|
committer_or_reader = self.commit.committer
|
||
|
except ValueError:
|
||
|
committer_or_reader = self.repo.config_reader()
|
||
|
# end handle newly cloned repositories
|
||
|
return RefLog.append_entry(committer_or_reader, RefLog.path(self), oldbinsha,
|
||
|
(newbinsha is None and self.commit.binsha) or newbinsha,
|
||
|
message)
|
||
|
|
||
|
def log_entry(self, index):
|
||
|
""":return: RefLogEntry at the given index
|
||
|
:param index: python list compatible positive or negative index
|
||
|
|
||
|
.. note:: This method must read part of the reflog during execution, hence
|
||
|
it should be used sparringly, or only if you need just one index.
|
||
|
In that case, it will be faster than the ``log()`` method"""
|
||
|
return RefLog.entry_at(RefLog.path(self), index)
|
||
|
|
||
|
@classmethod
|
||
|
def to_full_path(cls, path):
|
||
|
"""
|
||
|
:return: string with a full repository-relative path which can be used to initialize
|
||
|
a Reference instance, for instance by using ``Reference.from_path``"""
|
||
|
if isinstance(path, SymbolicReference):
|
||
|
path = path.path
|
||
|
full_ref_path = path
|
||
|
if not cls._common_path_default:
|
||
|
return full_ref_path
|
||
|
if not path.startswith(cls._common_path_default + "/"):
|
||
|
full_ref_path = '%s/%s' % (cls._common_path_default, path)
|
||
|
return full_ref_path
|
||
|
|
||
|
@classmethod
|
||
|
def delete(cls, repo, path):
|
||
|
"""Delete the reference at the given path
|
||
|
|
||
|
:param repo:
|
||
|
Repository to delete the reference from
|
||
|
|
||
|
:param path:
|
||
|
Short or full path pointing to the reference, i.e. refs/myreference
|
||
|
or just "myreference", hence 'refs/' is implied.
|
||
|
Alternatively the symbolic reference to be deleted"""
|
||
|
full_ref_path = cls.to_full_path(path)
|
||
|
abs_path = osp.join(repo.common_dir, full_ref_path)
|
||
|
if osp.exists(abs_path):
|
||
|
os.remove(abs_path)
|
||
|
else:
|
||
|
# check packed refs
|
||
|
pack_file_path = cls._get_packed_refs_path(repo)
|
||
|
try:
|
||
|
with open(pack_file_path, 'rb') as reader:
|
||
|
new_lines = []
|
||
|
made_change = False
|
||
|
dropped_last_line = False
|
||
|
for line in reader:
|
||
|
# keep line if it is a comment or if the ref to delete is not
|
||
|
# in the line
|
||
|
# If we deleted the last line and this one is a tag-reference object,
|
||
|
# we drop it as well
|
||
|
line = line.decode(defenc)
|
||
|
if (line.startswith('#') or full_ref_path not in line) and \
|
||
|
(not dropped_last_line or dropped_last_line and not line.startswith('^')):
|
||
|
new_lines.append(line)
|
||
|
dropped_last_line = False
|
||
|
continue
|
||
|
# END skip comments and lines without our path
|
||
|
|
||
|
# drop this line
|
||
|
made_change = True
|
||
|
dropped_last_line = True
|
||
|
|
||
|
# write the new lines
|
||
|
if made_change:
|
||
|
# write-binary is required, otherwise windows will
|
||
|
# open the file in text mode and change LF to CRLF !
|
||
|
with open(pack_file_path, 'wb') as fd:
|
||
|
fd.writelines(l.encode(defenc) for l in new_lines)
|
||
|
|
||
|
except (OSError, IOError):
|
||
|
pass # it didn't exist at all
|
||
|
|
||
|
# delete the reflog
|
||
|
reflog_path = RefLog.path(cls(repo, full_ref_path))
|
||
|
if osp.isfile(reflog_path):
|
||
|
os.remove(reflog_path)
|
||
|
# END remove reflog
|
||
|
|
||
|
@classmethod
|
||
|
def _create(cls, repo, path, resolve, reference, force, logmsg=None):
|
||
|
"""internal method used to create a new symbolic reference.
|
||
|
If resolve is False, the reference will be taken as is, creating
|
||
|
a proper symbolic reference. Otherwise it will be resolved to the
|
||
|
corresponding object and a detached symbolic reference will be created
|
||
|
instead"""
|
||
|
git_dir = _git_dir(repo, path)
|
||
|
full_ref_path = cls.to_full_path(path)
|
||
|
abs_ref_path = osp.join(git_dir, full_ref_path)
|
||
|
|
||
|
# figure out target data
|
||
|
target = reference
|
||
|
if resolve:
|
||
|
target = repo.rev_parse(str(reference))
|
||
|
|
||
|
if not force and osp.isfile(abs_ref_path):
|
||
|
target_data = str(target)
|
||
|
if isinstance(target, SymbolicReference):
|
||
|
target_data = target.path
|
||
|
if not resolve:
|
||
|
target_data = "ref: " + target_data
|
||
|
with open(abs_ref_path, 'rb') as fd:
|
||
|
existing_data = fd.read().decode(defenc).strip()
|
||
|
if existing_data != target_data:
|
||
|
raise OSError("Reference at %r does already exist, pointing to %r, requested was %r" %
|
||
|
(full_ref_path, existing_data, target_data))
|
||
|
# END no force handling
|
||
|
|
||
|
ref = cls(repo, full_ref_path)
|
||
|
ref.set_reference(target, logmsg)
|
||
|
return ref
|
||
|
|
||
|
@classmethod
|
||
|
def create(cls, repo, path, reference='HEAD', force=False, logmsg=None):
|
||
|
"""Create a new symbolic reference, hence a reference pointing to another reference.
|
||
|
|
||
|
:param repo:
|
||
|
Repository to create the reference in
|
||
|
|
||
|
:param path:
|
||
|
full path at which the new symbolic reference is supposed to be
|
||
|
created at, i.e. "NEW_HEAD" or "symrefs/my_new_symref"
|
||
|
|
||
|
:param reference:
|
||
|
The reference to which the new symbolic reference should point to.
|
||
|
If it is a commit'ish, the symbolic ref will be detached.
|
||
|
|
||
|
:param force:
|
||
|
if True, force creation even if a symbolic reference with that name already exists.
|
||
|
Raise OSError otherwise
|
||
|
|
||
|
:param logmsg:
|
||
|
If not None, the message to append to the reflog. Otherwise no reflog
|
||
|
entry is written.
|
||
|
|
||
|
:return: Newly created symbolic Reference
|
||
|
|
||
|
:raise OSError:
|
||
|
If a (Symbolic)Reference with the same name but different contents
|
||
|
already exists.
|
||
|
|
||
|
:note: This does not alter the current HEAD, index or Working Tree"""
|
||
|
return cls._create(repo, path, cls._resolve_ref_on_create, reference, force, logmsg)
|
||
|
|
||
|
def rename(self, new_path, force=False):
|
||
|
"""Rename self to a new path
|
||
|
|
||
|
:param new_path:
|
||
|
Either a simple name or a full path, i.e. new_name or features/new_name.
|
||
|
The prefix refs/ is implied for references and will be set as needed.
|
||
|
In case this is a symbolic ref, there is no implied prefix
|
||
|
|
||
|
:param force:
|
||
|
If True, the rename will succeed even if a head with the target name
|
||
|
already exists. It will be overwritten in that case
|
||
|
|
||
|
:return: self
|
||
|
:raise OSError: In case a file at path but a different contents already exists """
|
||
|
new_path = self.to_full_path(new_path)
|
||
|
if self.path == new_path:
|
||
|
return self
|
||
|
|
||
|
new_abs_path = osp.join(_git_dir(self.repo, new_path), new_path)
|
||
|
cur_abs_path = osp.join(_git_dir(self.repo, self.path), self.path)
|
||
|
if osp.isfile(new_abs_path):
|
||
|
if not force:
|
||
|
# if they point to the same file, its not an error
|
||
|
with open(new_abs_path, 'rb') as fd1:
|
||
|
f1 = fd1.read().strip()
|
||
|
with open(cur_abs_path, 'rb') as fd2:
|
||
|
f2 = fd2.read().strip()
|
||
|
if f1 != f2:
|
||
|
raise OSError("File at path %r already exists" % new_abs_path)
|
||
|
# else: we could remove ourselves and use the otherone, but
|
||
|
# but clarity we just continue as usual
|
||
|
# END not force handling
|
||
|
os.remove(new_abs_path)
|
||
|
# END handle existing target file
|
||
|
|
||
|
dname = osp.dirname(new_abs_path)
|
||
|
if not osp.isdir(dname):
|
||
|
os.makedirs(dname)
|
||
|
# END create directory
|
||
|
|
||
|
os.rename(cur_abs_path, new_abs_path)
|
||
|
self.path = new_path
|
||
|
|
||
|
return self
|
||
|
|
||
|
@classmethod
|
||
|
def _iter_items(cls, repo, common_path=None):
|
||
|
if common_path is None:
|
||
|
common_path = cls._common_path_default
|
||
|
rela_paths = set()
|
||
|
|
||
|
# walk loose refs
|
||
|
# Currently we do not follow links
|
||
|
for root, dirs, files in os.walk(join_path_native(repo.common_dir, common_path)):
|
||
|
if 'refs' not in root.split(os.sep): # skip non-refs subfolders
|
||
|
refs_id = [d for d in dirs if d == 'refs']
|
||
|
if refs_id:
|
||
|
dirs[0:] = ['refs']
|
||
|
# END prune non-refs folders
|
||
|
|
||
|
for f in files:
|
||
|
if f == 'packed-refs':
|
||
|
continue
|
||
|
abs_path = to_native_path_linux(join_path(root, f))
|
||
|
rela_paths.add(abs_path.replace(to_native_path_linux(repo.common_dir) + '/', ""))
|
||
|
# END for each file in root directory
|
||
|
# END for each directory to walk
|
||
|
|
||
|
# read packed refs
|
||
|
for sha, rela_path in cls._iter_packed_refs(repo): # @UnusedVariable
|
||
|
if rela_path.startswith(common_path):
|
||
|
rela_paths.add(rela_path)
|
||
|
# END relative path matches common path
|
||
|
# END packed refs reading
|
||
|
|
||
|
# return paths in sorted order
|
||
|
for path in sorted(rela_paths):
|
||
|
try:
|
||
|
yield cls.from_path(repo, path)
|
||
|
except ValueError:
|
||
|
continue
|
||
|
# END for each sorted relative refpath
|
||
|
|
||
|
@classmethod
|
||
|
def iter_items(cls, repo, common_path=None):
|
||
|
"""Find all refs in the repository
|
||
|
|
||
|
:param repo: is the Repo
|
||
|
|
||
|
:param common_path:
|
||
|
Optional keyword argument to the path which is to be shared by all
|
||
|
returned Ref objects.
|
||
|
Defaults to class specific portion if None assuring that only
|
||
|
refs suitable for the actual class are returned.
|
||
|
|
||
|
:return:
|
||
|
git.SymbolicReference[], each of them is guaranteed to be a symbolic
|
||
|
ref which is not detached and pointing to a valid ref
|
||
|
|
||
|
List is lexicographically sorted
|
||
|
The returned objects represent actual subclasses, such as Head or TagReference"""
|
||
|
return (r for r in cls._iter_items(repo, common_path) if r.__class__ == SymbolicReference or not r.is_detached)
|
||
|
|
||
|
@classmethod
|
||
|
def from_path(cls, repo, path):
|
||
|
"""
|
||
|
:param path: full .git-directory-relative path name to the Reference to instantiate
|
||
|
:note: use to_full_path() if you only have a partial path of a known Reference Type
|
||
|
:return:
|
||
|
Instance of type Reference, Head, or Tag
|
||
|
depending on the given path"""
|
||
|
if not path:
|
||
|
raise ValueError("Cannot create Reference from %r" % path)
|
||
|
|
||
|
# Names like HEAD are inserted after the refs module is imported - we have an import dependency
|
||
|
# cycle and don't want to import these names in-function
|
||
|
from . import HEAD, Head, RemoteReference, TagReference, Reference
|
||
|
for ref_type in (HEAD, Head, RemoteReference, TagReference, Reference, SymbolicReference):
|
||
|
try:
|
||
|
instance = ref_type(repo, path)
|
||
|
if instance.__class__ == SymbolicReference and instance.is_detached:
|
||
|
raise ValueError("SymbolRef was detached, we drop it")
|
||
|
return instance
|
||
|
except ValueError:
|
||
|
pass
|
||
|
# END exception handling
|
||
|
# END for each type to try
|
||
|
raise ValueError("Could not find reference type suitable to handle path %r" % path)
|
||
|
|
||
|
def is_remote(self):
|
||
|
""":return: True if this symbolic reference points to a remote branch"""
|
||
|
return self.path.startswith(self._remote_common_path_default + "/")
|