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#! /usr/bin/python2.7
import re
import sys
import shutil
import os.path
import subprocess
import sysconfig
import reindent
import untabify
# Excluded directories which are copies of external libraries:
# don't check their coding style
EXCLUDE_DIRS = [os.path.join('Modules', '_ctypes', 'libffi'),
os.path.join('Modules', '_ctypes', 'libffi_osx'),
os.path.join('Modules', '_ctypes', 'libffi_msvc'),
os.path.join('Modules', 'expat'),
os.path.join('Modules', 'zlib')]
SRCDIR = sysconfig.get_config_var('srcdir')
def n_files_str(count):
"""Return 'N file(s)' with the proper plurality on 'file'."""
return "{} file{}".format(count, "s" if count != 1 else "")
def status(message, modal=False, info=None):
"""Decorator to output status info to stdout."""
def decorated_fxn(fxn):
def call_fxn(*args, **kwargs):
sys.stdout.write(message + ' ... ')
sys.stdout.flush()
result = fxn(*args, **kwargs)
if not modal and not info:
print "done"
elif info:
print info(result)
else:
print "yes" if result else "NO"
return result
return call_fxn
return decorated_fxn
def get_git_branch():
"""Get the symbolic name for the current git branch"""
cmd = "git rev-parse --abbrev-ref HEAD".split()
try:
return subprocess.check_output(cmd, stderr=subprocess.PIPE)
except subprocess.CalledProcessError:
return None
def get_git_upstream_remote():
"""Get the remote name to use for upstream branches
Uses "upstream" if it exists, "origin" otherwise
"""
cmd = "git remote get-url upstream".split()
try:
subprocess.check_output(cmd, stderr=subprocess.PIPE)
except subprocess.CalledProcessError:
return "origin"
return "upstream"
@status("Getting base branch for PR",
info=lambda x: x if x is not None else "not a PR branch")
def get_base_branch():
if not os.path.exists(os.path.join(SRCDIR, '.git')):
# Not a git checkout, so there's no base branch
return None
version = sys.version_info
if version.releaselevel == 'alpha':
base_branch = "master"
else:
base_branch = "{0.major}.{0.minor}".format(version)
this_branch = get_git_branch()
if this_branch is None or this_branch == base_branch:
# Not on a git PR branch, so there's no base branch
return None
upstream_remote = get_git_upstream_remote()
return upstream_remote + "/" + base_branch
@status("Getting the list of files that have been added/changed",
info=lambda x: n_files_str(len(x)))
def changed_files(base_branch=None):
"""Get the list of changed or added files from git."""
if os.path.exists(os.path.join(SRCDIR, '.git')):
# We just use an existence check here as:
# directory = normal git checkout/clone
# file = git worktree directory
if base_branch:
cmd = 'git diff --name-status ' + base_branch
else:
cmd = 'git status --porcelain'
filenames = []
st = subprocess.Popen(cmd.split(), stdout=subprocess.PIPE)
try:
for line in st.stdout:
line = line.decode().rstrip()
status_text, filename = line.split(None, 1)
status = set(status_text)
# modified, added or unmerged files
if not status.intersection('MAU'):
continue
if ' -> ' in filename:
# file is renamed
filename = filename.split(' -> ', 2)[1].strip()
filenames.append(filename)
finally:
st.stdout.close()
else:
sys.exit('need a git checkout to get modified files')
filenames2 = []
for filename in filenames:
# Normalize the path to be able to match using .startswith()
filename = os.path.normpath(filename)
if any(filename.startswith(path) for path in EXCLUDE_DIRS):
# Exclude the file
continue
filenames2.append(filename)
return filenames2
def report_modified_files(file_paths):
count = len(file_paths)
if count == 0:
return n_files_str(count)
else:
lines = ["{}:".format(n_files_str(count))]
for path in file_paths:
lines.append(" {}".format(path))
return "\n".join(lines)
@status("Fixing whitespace", info=report_modified_files)
def normalize_whitespace(file_paths):
"""Make sure that the whitespace for .py files have been normalized."""
reindent.makebackup = False # No need to create backups.
fixed = []
for path in (x for x in file_paths if x.endswith('.py')):
if reindent.check(os.path.join(SRCDIR, path)):
fixed.append(path)
return fixed
@status("Fixing C file whitespace", info=report_modified_files)
def normalize_c_whitespace(file_paths):
"""Report if any C files """
fixed = []
for path in file_paths:
abspath = os.path.join(SRCDIR, path)
with open(abspath, 'r') as f:
if '\t' not in f.read():
continue
untabify.process(abspath, 8, verbose=False)
fixed.append(path)
return fixed
ws_re = re.compile(br'\s+(\r?\n)$')
@status("Fixing docs whitespace", info=report_modified_files)
def normalize_docs_whitespace(file_paths):
fixed = []
for path in file_paths:
abspath = os.path.join(SRCDIR, path)
try:
with open(abspath, 'rb') as f:
lines = f.readlines()
new_lines = [ws_re.sub(br'\1', line) for line in lines]
if new_lines != lines:
shutil.copyfile(abspath, abspath + '.bak')
with open(abspath, 'wb') as f:
f.writelines(new_lines)
fixed.append(path)
except Exception as err:
print 'Cannot fix %s: %s' % (path, err)
return fixed
@status("Docs modified", modal=True)
def docs_modified(file_paths):
"""Report if any file in the Doc directory has been changed."""
return bool(file_paths)
@status("Misc/ACKS updated", modal=True)
def credit_given(file_paths):
"""Check if Misc/ACKS has been changed."""
return os.path.join('Misc', 'ACKS') in file_paths
@status("Misc/NEWS.d updated with `blurb`", modal=True)
def reported_news(file_paths):
"""Check if Misc/NEWS.d has been changed."""
return any(p.startswith(os.path.join('Misc', 'NEWS.d', 'next'))
for p in file_paths)
def main():
base_branch = get_base_branch()
file_paths = changed_files(base_branch)
python_files = [fn for fn in file_paths if fn.endswith('.py')]
c_files = [fn for fn in file_paths if fn.endswith(('.c', '.h'))]
doc_files = [fn for fn in file_paths if fn.startswith('Doc') and
fn.endswith(('.rst', '.inc'))]
misc_files = {p for p in file_paths if p.startswith('Misc')}
# PEP 8 whitespace rules enforcement.
normalize_whitespace(python_files)
# C rules enforcement.
normalize_c_whitespace(c_files)
# Doc whitespace enforcement.
normalize_docs_whitespace(doc_files)
# Docs updated.
docs_modified(doc_files)
# Misc/ACKS changed.
credit_given(misc_files)
# Misc/NEWS changed.
reported_news(misc_files)
# Test suite run and passed.
if python_files or c_files:
end = " and check for refleaks?" if c_files else "?"
print
print "Did you run the test suite" + end
if __name__ == '__main__':
main()