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git.py
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Sat, Apr 27, 22:36

git.py
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"""
Gather info for git based repos
"""
__author__ = "Guillaume Anciaux, and Nicolas Richart"
__copyright__ = "Copyright (C) 2015, EPFL (Ecole Polytechnique Fédérale de Lausanne) Laboratory " \
"(LSMS - Laboratoire de Simulation en Mécanique des Solides)"
__credits__ = ["Guillaume Anciaux", "Nicolas Richart"]
__license__ = "GPL"
__version__ = "1.0"
__maintainer__ = "Nicolas Richart"
__email__ = "nicolas.richart@epfl.ch"
import git
import binascii
import datetime as dt
import re
from .. import export
from .. import version_info
@export
class GITInfo(version_info.VersionInfo):
"""
git implementation of the version info class
"""
__repo = None
__other_names = []
def __init__(self, repo, filename, ignore_list, rev_to=None, **kwargs):
super().__init__(repo, filename, ignore_list, **kwargs)
self.__repo = git.Repo(self._repo)
self._name = filename.replace(self._repo, '')
commits = self._list_commits(rev_to=rev_to, ignore_list=ignore_list)
self._modification_dates = []
for c in commits:
if c.author.email not in ignore_list:
self._modification_dates.append(dt.datetime.fromtimestamp(c.authored_date))
self.__other_names = self._list_names(commits)
# noinspection PyIncorrectDocstring
def populate(self, author_db, rev_from=None, rev_to=None):
"""
populate the internal variables
"""
_commits = self._list_commits(rev_to=rev_to,
rev_from=rev_from)
for c in _commits:
email = c.author.email
a = author_db.find_by_email(email)
auth = a.user_name
if auth not in self._author_list:
self._author_list[auth] = []
if not author_db.is_author_in_ignore_list(a):
self._authors.add(a)
d = dt.datetime.fromtimestamp(c.authored_date)
rev = c.hexsha
msg = c.message
self._author_list[auth].append((d, rev, msg))
def get_modifications(self, revision):
hexsha = binascii.unhexlify(revision)
commit = git.objects.commit.Commit(self.__repo, hexsha)
stats = commit.stats.total
patches = []
subproject_meta = re.compile(r'[-+]Subproject commit [0-9a-z]+$')
header_modif = re.compile(r'[-+] * (@author|@brief|@date|Copyright +\(©\)) ')
if len(commit.parents) == 2: #merge commit
print('Skipping merge commit')
return '\n'.join(patches), stats
for parent in commit.parents:
diffs = commit.diff(parent, create_patch=True, ignore_space_change=True, paths=[self.__other_names])
patch = [d.diff.decode('utf-8', errors="surrogateescape") for d in diffs]
if len(patch) > 0 and not re.match(subproject_meta, str(patch)) and not re.match(header_modif, str(patch)):
patches.extend(patch)
return '\n'.join(patches), stats
def _list_commits(self, rev_to=None, rev_from=None, ignore_list=None):
if ignore_list is None:
ignore_list = []
_args = {'follow': True,
'all': True,
'pretty': 'tformat:%H'}
if rev_from is not None:
_args['since'] = rev_from.strftime("%Y-%m-%d")
if rev_to is not None:
_args['until'] = rev_to.strftime("%Y-%m-%d")
# git log can follow better renames in case there where badly done (add/rm instead of mv)
git_cmd = git.cmd.Git(working_dir=self.__repo.working_dir)
str_c = git_cmd.log(self._name, **_args)
if len(str_c) != 0:
binhashes = (binascii.unhexlify(c) for c in str_c.split('\n'))
else:
binhashes = []
list_commits = []
for b in binhashes:
c = git.objects.commit.Commit(self.__repo, b)
if c.author.email not in ignore_list:
list_commits.append(c)
if len(list_commits) == 0:
del _args['follow']
del _args['pretty']
return list(self.__repo.iter_commits(paths=self._name, **_args))
# list_commits = list(self.__repo.iter_commits(paths=self._name, **_args))
return list_commits
def _list_names(self, commits):
"""
Finds all the names of a given file
"""
names = [self._name]
for c in commits:
for p in c.parents:
diffs = c.diff(p, R=True, M=True)
for d in diffs.iter_change_type('R'):
if d.renamed and d.rename_to in names:
new_path = d.rename_from
self._names[new_path] = c.hexsha
names.append(new_path)
if len(self._names.keys()) == 0:
c = commits[-1]
self._names[self._name] = c.hexsha
names.reverse()
return names
@property
def oldest_name(self):
return self.__other_names[0]

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