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#!/usr/bin/env python
# vim: tabstop=4 shiftwidth=4 softtabstop=4
# Copyright (c) 2012, Cloudscaling
# All Rights Reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
"""cloudinit HACKING file compliance testing (based off of nova hacking.py)
built on top of pep8.py
"""
import inspect
import logging
import re
import sys
import pep8
# Don't need this for testing
logging.disable('LOG')
# N1xx comments
# N2xx except
# N3xx imports
# N4xx docstrings
# N[5-9]XX (future use)
DOCSTRING_TRIPLE = ['"""', "'''"]
VERBOSE_MISSING_IMPORT = False
_missingImport = set([])
def import_normalize(line):
# convert "from x import y" to "import x.y"
# handle "from x import y as z" to "import x.y as z"
split_line = line.split()
if (line.startswith("from ") and "," not in line and
split_line[2] == "import" and split_line[3] != "*" and
split_line[1] != "__future__" and
(len(split_line) == 4 or
(len(split_line) == 6 and split_line[4] == "as"))):
return "import %s.%s" % (split_line[1], split_line[3])
else:
return line
def cloud_import_alphabetical(physical_line, line_number, lines):
"""Check for imports in alphabetical order.
HACKING guide recommendation for imports:
imports in human alphabetical order
N306
"""
# handle import x
# use .lower since capitalization shouldn't dictate order
split_line = import_normalize(physical_line.strip()).lower().split()
split_previous = import_normalize(lines[line_number - 2])
split_previous = split_previous.strip().lower().split()
# with or without "as y"
length = [2, 4]
if (len(split_line) in length and len(split_previous) in length and
split_line[0] == "import" and split_previous[0] == "import"):
if split_line[1] < split_previous[1]:
return (0, "N306: imports not in alphabetical order (%s, %s)"
% (split_previous[1], split_line[1]))
def cloud_docstring_start_space(physical_line):
"""Check for docstring not start with space.
HACKING guide recommendation for docstring:
Docstring should not start with space
N401
"""
pos = max([physical_line.find(i) for i in DOCSTRING_TRIPLE]) # start
if (pos != -1 and len(physical_line) > pos + 1):
if (physical_line[pos + 3] == ' '):
return (pos, "N401: one line docstring should not start with"
" a space")
def cloud_todo_format(physical_line):
"""Check for 'TODO()'.
HACKING guide recommendation for TODO:
Include your name with TODOs as in "#TODO(termie)"
N101
"""
pos = physical_line.find('TODO')
pos1 = physical_line.find('TODO(')
pos2 = physical_line.find('#') # make sure it's a comment
if (pos != pos1 and pos2 >= 0 and pos2 < pos):
return pos, "N101: Use TODO(NAME)"
def cloud_docstring_one_line(physical_line):
"""Check one line docstring end.
HACKING guide recommendation for one line docstring:
A one line docstring looks like this and ends in a period.
N402
"""
pos = max([physical_line.find(i) for i in DOCSTRING_TRIPLE]) # start
end = max([physical_line[-4:-1] == i for i in DOCSTRING_TRIPLE]) # end
if (pos != -1 and end and len(physical_line) > pos + 4):
if (physical_line[-5] != '.'):
return pos, "N402: one line docstring needs a period"
def cloud_docstring_multiline_end(physical_line):
"""Check multi line docstring end.
HACKING guide recommendation for docstring:
Docstring should end on a new line
N403
"""
pos = max([physical_line.find(i) for i in DOCSTRING_TRIPLE]) # start
if (pos != -1 and len(physical_line) == pos):
print physical_line
if (physical_line[pos + 3] == ' '):
return (pos, "N403: multi line docstring end on new line")
current_file = ""
def readlines(filename):
"""Record the current file being tested."""
pep8.current_file = filename
return open(filename).readlines()
def add_cloud():
"""Monkey patch pep8 for cloud-init guidelines.
Look for functions that start with cloud_
and add them to pep8 module.
Assumes you know how to write pep8.py checks
"""
for name, function in globals().items():
if not inspect.isfunction(function):
continue
if name.startswith("cloud_"):
exec("pep8.%s = %s" % (name, name)) # pylint: disable=W0122
if __name__ == "__main__":
# NOVA based 'hacking.py' error codes start with an N
pep8.ERRORCODE_REGEX = re.compile(r'[EWN]\d{3}')
add_cloud()
pep8.current_file = current_file
pep8.readlines = readlines
try:
pep8._main() # pylint: disable=W0212
finally:
if len(_missingImport) > 0:
print >> sys.stderr, ("%i imports missing in this test environment"
% len(_missingImport))
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