def entropy(self):
entropy = 0
file_lines = list()
file_total_line_count = 0
if self.__cache_entropy is None:
for st in self.file_stat:
modified_path = st['modified_path']
if in_our_extensions(modified_path) or \
(st['is_rename'] and in_our_extensions(st['current_path'])):
added_loc = st['added']
deleted_loc = st['deleted']
total_loc = added_loc + deleted_loc
file_total_line_count += total_loc
file_lines.append(total_loc)
minimum = 100
for f_loc in file_lines:
if f_loc == 0:
continue
else:
avg = 1.0 * f_loc / file_total_line_count
if avg < minimum:
minimum = avg
entropy -= avg * math.log(avg, 2)
if minimum != 100 and math.log(minimum, 2) != 0:
entropy /= abs(math.log(minimum, 2))
self.__cache_entropy = entropy
return self.__cache_entropy
def deleted_number(self):
count = 0
if self.__cache_deleted_number is None:
for st in self.file_stat:
if in_our_extensions(st['modified_path']):
count += st['deleted']
elif st['is_rename'] and in_our_extensions(st['current_path']):
count += st['deleted']
self.__cache_deleted_number = count
return self.__cache_deleted_number
def in_required_extensions(self, file_path):
if len(self.parents) > 1:
return False
if in_our_extensions(file_path):
return True
files, rename_files = self.stats.modified_files
if self.namestat.file_modify_type[file_path] == 'rename':
cur_path = rename_files[file_path]
if in_our_extensions(cur_path):
return True
return False
def evolve_from_prior_commit(self):
la = 0
ld = 0
lt = 0
nf = 0
gcf = GitOneCommitFeatures
stats = self.stats
namestats = self.namestat
if len(self.parents) == 0:
p = None
elif len(self.parents) == 1:
p = self.parents[0]
else:
if gcf.project_merge_numstat[
self.commit_id].base_commit is not None:
p = gcf.project_merge_numstat[self.commit_id].base_commit
stats = gcf.project_merge_numstat[self.commit_id]
namestats = gcf.project_merge_namestat[self.commit_id]
else:
p = self.parents[0]
stats = None
if stats is not None:
files, rename_files = stats.modified_files
else:
# merge后和两个分支对比都没有变化
files = []
rename_files = []
if p is not None:
file_stats = gcf.parent_file_stats[p]['files']
if gcf.parent_file_stats[p]['son_num'] == 1:
gcf.parent_file_stats[self.commit_id]['files'] = file_stats
else:
# 新建分支，file_stats deepcopy一份
gcf.parent_file_stats[self.commit_id]['files'] = deepcopy(
file_stats)
for f, added, deleted in files:
if namestats.file_modify_type[f] == 'add':
assert (deleted == 0)
#
gcf.parent_file_stats[self.commit_id]['files'][f] = added
if in_our_extensions(f):
nf += 1
la += added
elif namestats.file_modify_type[f] == 'delete':
assert (added == 0)
#assert(deleted == file_stats[f])
if in_our_extensions(f):
lt += file_stats[f]
nf += 1
ld += deleted
#
del gcf.parent_file_stats[self.commit_id]['files'][f]
elif namestats.file_modify_type[f] == 'rename':
cur_file = rename_files[f]
tmp = file_stats[f]
assert (tmp + added - deleted >= 0)
#
gcf.parent_file_stats[
self.commit_id]['files'][cur_file] = tmp + added - deleted
if in_our_extensions(f) or in_our_extensions(cur_file):
lt += tmp
nf += 1
la += added
ld += deleted
#
del gcf.parent_file_stats[self.commit_id]['files'][f]
else:
assert (namestats.file_modify_type[f] == 'modify')
tmp = file_stats[f]
assert (tmp + added - deleted >= 0)
#
gcf.parent_file_stats[
self.commit_id]['files'][f] = tmp + added - deleted
if in_our_extensions(f):
lt += tmp
nf += 1
la += added
ld += deleted
if len(self.parents) > 1:
lt = 0
la = 0
ld = 0
else:
nf = len(files)
if nf > 0:
lt = 1.0 * lt / nf
return lt, la, ld