Repository navigation
Expand file tree
/
Copy pathcommit.py
More file actions
507 lines (435 loc) · 19.3 KB
/
Copy pathcommit.py
File metadata and controls
507 lines (435 loc) · 19.3 KB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
# commit.py
# Copyright (C) 2008, 2009 Michael Trier (mtrier@gmail.com) and contributors
#
# This module is part of GitPython and is released under
# the BSD License: http://www.opensource.org/licenses/bsd-license.php
from gitdb import IStream
from gitdb.util import hex_to_bin
from git.util import (
Actor,
Iterable,
Stats,
finalize_process
)
from git.diff import Diffable
from .tree import Tree
from . import base
from .util import (
Traversable,
Serializable,
parse_date,
altz_to_utctz_str,
parse_actor_and_date
)
from git.compat import text_type
from time import (
time,
altzone
)
import os
from io import BytesIO
import logging
log = logging.getLogger('git.objects.commit')
__all__ = ('Commit', )
class Commit(base.Object, Iterable, Diffable, Traversable, Serializable):
"""Wraps a git Commit object.
This class will act lazily on some of its attributes and will query the
value on demand only if it involves calling the git binary."""
# ENVIRONMENT VARIABLES
# read when creating new commits
env_author_date = "GIT_AUTHOR_DATE"
env_committer_date = "GIT_COMMITTER_DATE"
# CONFIGURATION KEYS
conf_encoding = 'i18n.commitencoding'
# INVARIANTS
default_encoding = "UTF-8"
# object configuration
type = "commit"
__slots__ = ("tree",
"author", "authored_date", "author_tz_offset",
"committer", "committed_date", "committer_tz_offset",
"message", "parents", "encoding", "gpgsig")
_id_attribute_ = "hexsha"
def __init__(self, repo, binsha, tree=None, author=None, authored_date=None, author_tz_offset=None,
committer=None, committed_date=None, committer_tz_offset=None,
message=None, parents=None, encoding=None, gpgsig=None):
"""Instantiate a new Commit. All keyword arguments taking None as default will
be implicitly set on first query.
:param binsha: 20 byte sha1
:param parents: tuple( Commit, ... )
is a tuple of commit ids or actual Commits
:param tree: Tree
Tree object
:param author: Actor
is the author string ( will be implicitly converted into an Actor object )
:param authored_date: int_seconds_since_epoch
is the authored DateTime - use time.gmtime() to convert it into a
different format
:param author_tz_offset: int_seconds_west_of_utc
is the timezone that the authored_date is in
:param committer: Actor
is the committer string
:param committed_date: int_seconds_since_epoch
is the committed DateTime - use time.gmtime() to convert it into a
different format
:param committer_tz_offset: int_seconds_west_of_utc
is the timezone that the authored_date is in
:param message: string
is the commit message
:param encoding: string
encoding of the message, defaults to UTF-8
:param parents:
List or tuple of Commit objects which are our parent(s) in the commit
dependency graph
:return: git.Commit
:note:
Timezone information is in the same format and in the same sign
as what time.altzone returns. The sign is inverted compared to git's
UTC timezone."""
super(Commit, self).__init__(repo, binsha)
if tree is not None:
assert isinstance(tree, Tree), "Tree needs to be a Tree instance, was %s" % type(tree)
if tree is not None:
self.tree = tree
if author is not None:
self.author = author
if authored_date is not None:
self.authored_date = authored_date
if author_tz_offset is not None:
self.author_tz_offset = author_tz_offset
if committer is not None:
self.committer = committer
if committed_date is not None:
self.committed_date = committed_date
if committer_tz_offset is not None:
self.committer_tz_offset = committer_tz_offset
if message is not None:
self.message = message
if parents is not None:
self.parents = parents
if encoding is not None:
self.encoding = encoding
self.gpgsig = gpgsig
@classmethod
def _get_intermediate_items(cls, commit):
return commit.parents
def _set_cache_(self, attr):
if attr in Commit.__slots__:
# read the data in a chunk, its faster - then provide a file wrapper
binsha, typename, self.size, stream = self.repo.odb.stream(self.binsha)
self._deserialize(BytesIO(stream.read()))
else:
super(Commit, self)._set_cache_(attr)
# END handle attrs
@property
def summary(self):
""":return: First line of the commit message"""
return self.message.split('\n', 1)[0]
def count(self, paths='', **kwargs):
"""Count the number of commits reachable from this commit
:param paths:
is an optinal path or a list of paths restricting the return value
to commits actually containing the paths
:param kwargs:
Additional options to be passed to git-rev-list. They must not alter
the ouput style of the command, or parsing will yield incorrect results
:return: int defining the number of reachable commits"""
# yes, it makes a difference whether empty paths are given or not in our case
# as the empty paths version will ignore merge commits for some reason.
if paths:
return len(self.repo.git.rev_list(self.hexsha, '--', paths, **kwargs).splitlines())
else:
return len(self.repo.git.rev_list(self.hexsha, **kwargs).splitlines())
@property
def name_rev(self):
"""
:return:
String describing the commits hex sha based on the closest Reference.
Mostly useful for UI purposes"""
return self.repo.git.name_rev(self)
@classmethod
def iter_items(cls, repo, rev, paths='', **kwargs):
"""Find all commits matching the given criteria.
:param repo: is the Repo
:param rev: revision specifier, see git-rev-parse for viable options
:param paths:
is an optinal path or list of paths, if set only Commits that include the path
or paths will be considered
:param kwargs:
optional keyword arguments to git rev-list where
``max_count`` is the maximum number of commits to fetch
``skip`` is the number of commits to skip
``since`` all commits since i.e. '1970-01-01'
:return: iterator yielding Commit items"""
if 'pretty' in kwargs:
raise ValueError("--pretty cannot be used as parsing expects single sha's only")
# END handle pretty
# use -- in any case, to prevent possibility of ambiguous arguments
# see https://github.com/gitpython-developers/GitPython/issues/264
args = ['--']
if paths:
args.extend((paths, ))
# END if paths
proc = repo.git.rev_list(rev, args, as_process=True, **kwargs)
return cls._iter_from_process_or_stream(repo, proc)
def iter_parents(self, paths='', **kwargs):
"""Iterate _all_ parents of this commit.
:param paths:
Optional path or list of paths limiting the Commits to those that
contain at least one of the paths
:param kwargs: All arguments allowed by git-rev-list
:return: Iterator yielding Commit objects which are parents of self """
# skip ourselves
skip = kwargs.get("skip", 1)
if skip == 0: # skip ourselves
skip = 1
kwargs['skip'] = skip
return self.iter_items(self.repo, self, paths, **kwargs)
@property
def stats(self):
"""Create a git stat from changes between this commit and its first parent
or from all changes done if this is the very first commit.
:return: git.Stats"""
if not self.parents:
text = self.repo.git.diff_tree(self.hexsha, '--', numstat=True, root=True)
text2 = ""
for line in text.splitlines()[1:]:
(insertions, deletions, filename) = line.split("\t")
text2 += "%s\t%s\t%s\n" % (insertions, deletions, filename)
text = text2
else:
text = self.repo.git.diff(self.parents[0].hexsha, self.hexsha, '--', numstat=True)
return Stats._list_from_string(self.repo, text)
@classmethod
def _iter_from_process_or_stream(cls, repo, proc_or_stream):
"""Parse out commit information into a list of Commit objects
We expect one-line per commit, and parse the actual commit information directly
from our lighting fast object database
:param proc: git-rev-list process instance - one sha per line
:return: iterator returning Commit objects"""
stream = proc_or_stream
if not hasattr(stream, 'readline'):
stream = proc_or_stream.stdout
readline = stream.readline
while True:
line = readline()
if not line:
break
hexsha = line.strip()
if len(hexsha) > 40:
# split additional information, as returned by bisect for instance
hexsha, rest = line.split(None, 1)
# END handle extra info
assert len(hexsha) == 40, "Invalid line: %s" % hexsha
yield Commit(repo, hex_to_bin(hexsha))
# END for each line in stream
# TODO: Review this - it seems process handling got a bit out of control
# due to many developers trying to fix the open file handles issue
if hasattr(proc_or_stream, 'wait'):
finalize_process(proc_or_stream)
@classmethod
def create_from_tree(cls, repo, tree, message, parent_commits=None, head=False, author=None, committer=None):
"""Commit the given tree, creating a commit object.
:param repo: Repo object the commit should be part of
:param tree: Tree object or hex or bin sha
the tree of the new commit
:param message: Commit message. It may be an empty string if no message is provided.
It will be converted to a string in any case.
:param parent_commits:
Optional Commit objects to use as parents for the new commit.
If empty list, the commit will have no parents at all and become
a root commit.
If None , the current head commit will be the parent of the
new commit object
:param head:
If True, the HEAD will be advanced to the new commit automatically.
Else the HEAD will remain pointing on the previous commit. This could
lead to undesired results when diffing files.
:param author: The name of the author, optional. If unset, the repository
configuration is used to obtain this value.
:param committer: The name of the committer, optional. If unset, the
repository configuration is used to obtain this value.
:return: Commit object representing the new commit
:note:
Additional information about the committer and Author are taken from the
environment or from the git configuration, see git-commit-tree for
more information"""
if parent_commits is None:
try:
parent_commits = [repo.head.commit]
except ValueError:
# empty repositories have no head commit
parent_commits = list()
# END handle parent commits
else:
for p in parent_commits:
if not isinstance(p, cls):
raise ValueError("Parent commit '%r' must be of type %s" % (p, cls))
# end check parent commit types
# END if parent commits are unset
# retrieve all additional information, create a commit object, and
# serialize it
# Generally:
# * Environment variables override configuration values
# * Sensible defaults are set according to the git documentation
# COMMITER AND AUTHOR INFO
cr = repo.config_reader()
env = os.environ
committer = committer or Actor.committer(cr)
author = author or Actor.author(cr)
# PARSE THE DATES
unix_time = int(time())
offset = altzone
author_date_str = env.get(cls.env_author_date, '')
if author_date_str:
author_time, author_offset = parse_date(author_date_str)
else:
author_time, author_offset = unix_time, offset
# END set author time
committer_date_str = env.get(cls.env_committer_date, '')
if committer_date_str:
committer_time, committer_offset = parse_date(committer_date_str)
else:
committer_time, committer_offset = unix_time, offset
# END set committer time
# assume utf8 encoding
enc_section, enc_option = cls.conf_encoding.split('.')
conf_encoding = cr.get_value(enc_section, enc_option, cls.default_encoding)
# if the tree is no object, make sure we create one - otherwise
# the created commit object is invalid
if isinstance(tree, str):
tree = repo.tree(tree)
# END tree conversion
# CREATE NEW COMMIT
new_commit = cls(repo, cls.NULL_BIN_SHA, tree,
author, author_time, author_offset,
committer, committer_time, committer_offset,
message, parent_commits, conf_encoding)
stream = BytesIO()
new_commit._serialize(stream)
streamlen = stream.tell()
stream.seek(0)
istream = repo.odb.store(IStream(cls.type, streamlen, stream))
new_commit.binsha = istream.binsha
if head:
# need late import here, importing git at the very beginning throws
# as well ...
import git.refs
try:
repo.head.set_commit(new_commit, logmsg=message)
except ValueError:
# head is not yet set to the ref our HEAD points to
# Happens on first commit
master = git.refs.Head.create(repo, repo.head.ref, new_commit, logmsg="commit (initial): %s" % message)
repo.head.set_reference(master, logmsg='commit: Switching to %s' % master)
# END handle empty repositories
# END advance head handling
return new_commit
#{ Serializable Implementation
def _serialize(self, stream):
write = stream.write
write(("tree %s\n" % self.tree).encode('ascii'))
for p in self.parents:
write(("parent %s\n" % p).encode('ascii'))
a = self.author
aname = a.name
c = self.committer
fmt = "%s %s <%s> %s %s\n"
write((fmt % ("author", aname, a.email,
self.authored_date,
altz_to_utctz_str(self.author_tz_offset))).encode(self.encoding))
# encode committer
aname = c.name
write((fmt % ("committer", aname, c.email,
self.committed_date,
altz_to_utctz_str(self.committer_tz_offset))).encode(self.encoding))
if self.encoding != self.default_encoding:
write(("encoding %s\n" % self.encoding).encode('ascii'))
if self.gpgsig:
write(b"gpgsig")
for sigline in self.gpgsig.rstrip("\n").split("\n"):
write((" " + sigline + "\n").encode('ascii'))
write(b"\n")
# write plain bytes, be sure its encoded according to our encoding
if isinstance(self.message, text_type):
write(self.message.encode(self.encoding))
else:
write(self.message)
# END handle encoding
return self
def _deserialize(self, stream):
""":param from_rev_list: if true, the stream format is coming from the rev-list command
Otherwise it is assumed to be a plain data stream from our object"""
readline = stream.readline
self.tree = Tree(self.repo, hex_to_bin(readline().split()[1]), Tree.tree_id << 12, '')
self.parents = list()
next_line = None
while True:
parent_line = readline()
if not parent_line.startswith(b'parent'):
next_line = parent_line
break
# END abort reading parents
self.parents.append(type(self)(self.repo, hex_to_bin(parent_line.split()[-1].decode('ascii'))))
# END for each parent line
self.parents = tuple(self.parents)
# we don't know actual author encoding before we have parsed it, so keep the lines around
author_line = next_line
committer_line = readline()
# we might run into one or more mergetag blocks, skip those for now
next_line = readline()
while next_line.startswith(b'mergetag '):
next_line = readline()
while next_line.startswith(b' '):
next_line = readline()
# end skip mergetags
# now we can have the encoding line, or an empty line followed by the optional
# message.
self.encoding = self.default_encoding
# read headers
enc = next_line
buf = enc.strip()
while buf:
if buf[0:10] == b"encoding ":
self.encoding = buf[buf.find(' ') + 1:].decode('ascii')
elif buf[0:7] == b"gpgsig ":
sig = buf[buf.find(b' ') + 1:] + b"\n"
is_next_header = False
while True:
sigbuf = readline()
if not sigbuf:
break
if sigbuf[0:1] != b" ":
buf = sigbuf.strip()
is_next_header = True
break
sig += sigbuf[1:]
# end read all signature
self.gpgsig = sig.rstrip(b"\n").decode('ascii')
if is_next_header:
continue
buf = readline().strip()
# decode the authors name
try:
self.author, self.authored_date, self.author_tz_offset = \
parse_actor_and_date(author_line.decode(self.encoding))
except UnicodeDecodeError:
log.error("Failed to decode author line '%s' using encoding %s", author_line, self.encoding,
exc_info=True)
try:
self.committer, self.committed_date, self.committer_tz_offset = \
parse_actor_and_date(committer_line.decode(self.encoding))
except UnicodeDecodeError:
log.error("Failed to decode committer line '%s' using encoding %s", committer_line, self.encoding,
exc_info=True)
# END handle author's encoding
# a stream from our data simply gives us the plain message
# The end of our message stream is marked with a newline that we strip
self.message = stream.read()
try:
self.message = self.message.decode(self.encoding)
except UnicodeDecodeError:
log.error("Failed to decode message '%s' using encoding %s", self.message, self.encoding, exc_info=True)
# END exception handling
return self
#} END serializable implementation