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tag.py
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93 lines (70 loc) · 2.89 KB
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from .referenceimportReference
__all__= ["TagReference","Tag"]
classTagReference(Reference):
"""Class representing a lightweight tag reference which either points to a commit
,a tag object or any other object. In the latter case additional information,
like the signature or the tag-creator, is available.
This tag object will always point to a commit object, but may carry additional
information in a tag object::
tagref = TagReference.list_items(repo)[0]
print(tagref.commit.message)
if tagref.tag is not None:
print(tagref.tag.message)"""
__slots__= ()
_common_path_default="refs/tags"
@property
defcommit(self):
""":return: Commit object the tag ref points to
:raise ValueError: if the tag points to a tree or blob"""
obj=self.object
whileobj.type!='commit':
ifobj.type=="tag":
# it is a tag object which carries the commit as an object - we can point to anything
obj=obj.object
else:
raiseValueError(("Cannot resolve commit as tag %s points to a %s object - "+
"use the `.object` property instead to access it")% (self,obj.type))
returnobj
@property
deftag(self):
"""
:return: Tag object this tag ref points to or None in case
we are a light weight tag"""
obj=self.object
ifobj.type=="tag":
returnobj
returnNone
# make object read-only
# It should be reasonably hard to adjust an existing tag
object=property(Reference._get_object)
@classmethod
defcreate(cls,repo,path,ref='HEAD',message=None,force=False,**kwargs):
"""Create a new tag reference.
:param path:
The name of the tag, i.e. 1.0 or releases/1.0.
The prefix refs/tags is implied
:param ref:
A reference to the object you want to tag. It can be a commit, tree or
blob.
:param message:
If not None, the message will be used in your tag object. This will also
create an additional tag object that allows to obtain that information, i.e.::
tagref.tag.message
:param force:
If True, to force creation of a tag even though that tag already exists.
:param kwargs:
Additional keyword arguments to be passed to git-tag
:return: A new TagReference"""
args= (path,ref)
ifmessage:
kwargs['m']=message
ifforce:
kwargs['f']=True
repo.git.tag(*args,**kwargs)
returnTagReference(repo,"%s/%s"% (cls._common_path_default,path))
@classmethod
defdelete(cls,repo,*tags):
"""Delete the given existing tag or tags"""
repo.git.tag("-d",*tags)
# provide an alias
Tag=TagReference