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Commit826cf16

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add replace method to git.Commit
This adds a replace method to git.Commit. The replace method returns acopy of the Commit object with attributes replaced from keywordarguments. For example:>>> old = repo.head.commit>>> new = old.replace(message='This is a test')closes#1123
1 parente1cd58b commit826cf16

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2 files changed

+33
-7
lines changed

2 files changed

+33
-7
lines changed

‎git/objects/commit.py

Lines changed: 19 additions & 7 deletions
Original file line numberDiff line numberDiff line change
@@ -136,6 +136,24 @@ def __init__(self, repo, binsha, tree=None, author=None, authored_date=None, aut
136136
def_get_intermediate_items(cls,commit):
137137
returncommit.parents
138138

139+
@classmethod
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def_calculate_sha_(cls,repo,commit):
141+
stream=BytesIO()
142+
commit._serialize(stream)
143+
streamlen=stream.tell()
144+
stream.seek(0)
145+
146+
istream=repo.odb.store(IStream(cls.type,streamlen,stream))
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returnistream.binsha
148+
149+
defreplace(self,**kwargs):
150+
attrs= {k:getattr(self,k)forkinself.__slots__}
151+
attrs.update(kwargs)
152+
new_commit=self.__class__(self.repo,self.__class__.NULL_BIN_SHA,**attrs)
153+
new_commit.binsha=self._calculate_sha_(self.repo,new_commit)
154+
155+
returnnew_commit
156+
139157
def_set_cache_(self,attr):
140158
ifattrinCommit.__slots__:
141159
# read the data in a chunk, its faster - then provide a file wrapper
@@ -375,13 +393,7 @@ def create_from_tree(cls, repo, tree, message, parent_commits=None, head=False,
375393
committer,committer_time,committer_offset,
376394
message,parent_commits,conf_encoding)
377395

378-
stream=BytesIO()
379-
new_commit._serialize(stream)
380-
streamlen=stream.tell()
381-
stream.seek(0)
382-
383-
istream=repo.odb.store(IStream(cls.type,streamlen,stream))
384-
new_commit.binsha=istream.binsha
396+
new_commit.binsha=cls._calculate_sha_(repo,new_commit)
385397

386398
ifhead:
387399
# need late import here, importing git at the very beginning throws

‎test/test_commit.py

Lines changed: 14 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -101,6 +101,20 @@ def test_bake(self):
101101
assertisinstance(commit.author_tz_offset,int)andisinstance(commit.committer_tz_offset,int)
102102
self.assertEqual(commit.message,"Added missing information to docstrings of commit and stats module\n")
103103

104+
deftest_replace_no_changes(self):
105+
old_commit=self.rorepo.commit('2454ae89983a4496a445ce347d7a41c0bb0ea7ae')
106+
new_commit=old_commit.replace()
107+
108+
forattrinold_commit.__slots__:
109+
assertgetattr(new_commit,attr)==getattr(old_commit,attr)
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111+
deftest_replace_new_sha(self):
112+
commit=self.rorepo.commit('2454ae89983a4496a445ce347d7a41c0bb0ea7ae')
113+
new_commit=commit.replace(message='Added replace method')
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115+
assertnew_commit.hexsha=='fc84cbecac1bd4ba4deaac07c1044889edd536e6'
116+
assertnew_commit.message=='Added replace method'
117+
104118
deftest_stats(self):
105119
commit=self.rorepo.commit('33ebe7acec14b25c5f84f35a664803fcab2f7781')
106120
stats=commit.stats

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