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"""isort/settings.py.

Defines how the default settings for isort should be loaded

(First from the default setting dictionary at the top of the file, then overridden by any settings

in ~/.isort.cfg if there are any)

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated

documentation files (the "Software"), to deal in the Software without restriction, including without limitation

the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and

to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or

substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED

TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL

THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF

CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR

OTHER DEALINGS IN THE SOFTWARE.

"""

from __future__ import absolute_import, division, print_function, unicode_literals

import fnmatch

import os

import posixpath

from collections import namedtuple

from .pie_slice import itemsview, lru_cache, native_str

try:

import configparser

except ImportError:

import ConfigParser as configparser

MAX_CONFIG_SEARCH_DEPTH = 25 # The number of parent directories isort will look for a config file within

DEFAULT_SECTIONS = ('FUTURE', 'STDLIB', 'THIRDPARTY', 'FIRSTPARTY', 'LOCALFOLDER')

WrapModes = ('GRID', 'VERTICAL', 'HANGING_INDENT', 'VERTICAL_HANGING_INDENT', 'VERTICAL_GRID', 'VERTICAL_GRID_GROUPED', 'NOQA')

WrapModes = namedtuple('WrapModes', WrapModes)(*range(len(WrapModes)))

# Note that none of these lists must be complete as they are simply fallbacks for when included auto-detection fails.

default = {'force_to_top': [],

'skip': ['__init__.py', ],

'skip_glob': [],

'line_length': 79,

'wrap_length': 0,

'sections': DEFAULT_SECTIONS,

'no_sections': False,

'known_future_library': ['__future__'],

'known_standard_library': ['AL', 'BaseHTTPServer', 'Bastion', 'CGIHTTPServer', 'Carbon', 'ColorPicker',

'ConfigParser', 'Cookie', 'DEVICE', 'DocXMLRPCServer', 'EasyDialogs', 'FL',

'FrameWork', 'GL', 'HTMLParser', 'MacOS', 'MimeWriter', 'MiniAEFrame', 'Nav',

'PixMapWrapper', 'Queue', 'SUNAUDIODEV', 'ScrolledText', 'SimpleHTTPServer',

'SimpleXMLRPCServer', 'SocketServer', 'StringIO', 'Tix', 'Tkinter', 'UserDict',

'UserList', 'UserString', 'W', '__builtin__', 'abc', 'aepack', 'aetools',

'aetypes', 'aifc', 'al', 'anydbm', 'applesingle', 'argparse', 'array', 'ast',

'asynchat', 'asyncio', 'asyncore', 'atexit', 'audioop', 'autoGIL', 'base64',

'bdb', 'binascii', 'binhex', 'bisect', 'bsddb', 'buildtools', 'builtins',

'bz2', 'cPickle', 'cProfile', 'cStringIO', 'calendar', 'cd', 'cfmfile', 'cgi',

'cgitb', 'chunk', 'cmath', 'cmd', 'code', 'codecs', 'codeop', 'collections',

'colorsys', 'commands', 'compileall', 'compiler', 'concurrent', 'configparser',

'contextlib', 'cookielib', 'copy', 'copy_reg', 'copyreg', 'crypt', 'csv',

'ctypes', 'curses', 'datetime', 'dbhash', 'dbm', 'decimal', 'difflib',

'dircache', 'dis', 'distutils', 'dl', 'doctest', 'dumbdbm', 'dummy_thread',

'dummy_threading', 'email', 'encodings', 'ensurepip', 'enum', 'errno',

'exceptions', 'faulthandler', 'fcntl', 'filecmp', 'fileinput', 'findertools',

'fl', 'flp', 'fm', 'fnmatch', 'formatter', 'fpectl', 'fpformat', 'fractions',

'ftplib', 'functools', 'future_builtins', 'gc', 'gdbm', 'gensuitemodule',

'getopt', 'getpass', 'gettext', 'gl', 'glob', 'grp', 'gzip', 'hashlib',

'heapq', 'hmac', 'hotshot', 'html', 'htmlentitydefs', 'htmllib', 'http',

'httplib', 'ic', 'icopen', 'imageop', 'imaplib', 'imgfile', 'imghdr', 'imp',

'importlib', 'imputil', 'inspect', 'io', 'ipaddress', 'itertools', 'jpeg',

'json', 'keyword', 'lib2to3', 'linecache', 'locale', 'logging', 'lzma',

'macerrors', 'macostools', 'macpath', 'macresource', 'mailbox', 'mailcap',

'marshal', 'math', 'md5', 'mhlib', 'mimetools', 'mimetypes', 'mimify', 'mmap',

'modulefinder', 'msilib', 'msvcrt', 'multifile', 'multiprocessing', 'mutex',

'netrc', 'new', 'nis', 'nntplib', 'numbers', 'operator', 'optparse', 'os',

'ossaudiodev', 'parser', 'pathlib', 'pdb', 'pickle', 'pickletools', 'pipes',

'pkgutil', 'platform', 'plistlib', 'popen2', 'poplib', 'posix', 'posixfile',

'pprint', 'profile', 'pstats', 'pty', 'pwd', 'py_compile', 'pyclbr', 'pydoc',

'queue', 'quopri', 'random', 're', 'readline', 'reprlib', 'resource', 'rexec',

'rfc822', 'rlcompleter', 'robotparser', 'runpy', 'sched', 'secrets', 'select',

'selectors', 'sets', 'sgmllib', 'sha', 'shelve', 'shlex', 'shutil', 'signal',

'site', 'sitecustomize', 'smtpd', 'smtplib', 'sndhdr', 'socket', 'socketserver',

'spwd', 'sqlite3', 'ssl', 'stat', 'statistics', 'statvfs', 'string', 'stringprep',

'struct', 'subprocess', 'sunau', 'sunaudiodev', 'symbol', 'symtable', 'sys',

'sysconfig', 'syslog', 'tabnanny', 'tarfile', 'telnetlib', 'tempfile', 'termios',

'test', 'textwrap', 'this', 'thread', 'threading', 'time', 'timeit', 'tkinter',

'token', 'tokenize', 'trace', 'traceback', 'tracemalloc', 'ttk', 'tty', 'turtle',

'turtledemo', 'types', 'typing', 'unicodedata', 'unittest', 'urllib', 'urllib2',

'urlparse', 'user', 'usercustomize', 'uu', 'uuid', 'venv', 'videoreader',

'warnings', 'wave', 'weakref', 'webbrowser', 'whichdb', 'winreg', 'winsound',

'wsgiref', 'xdrlib', 'xml', 'xmlrpc', 'xmlrpclib', 'zipapp', 'zipfile',

'zipimport', 'zlib'],

'known_third_party': ['google.appengine.api'],

'known_first_party': [],

'multi_line_output': WrapModes.GRID,

'forced_separate': [],

'indent': ' ' * 4,

'length_sort': False,

'add_imports': [],

'remove_imports': [],

'force_single_line': False,

'default_section': 'FIRSTPARTY',

'import_heading_future': '',

'import_heading_stdlib': '',

'import_heading_thirdparty': '',

'import_heading_firstparty': '',

'import_heading_localfolder': '',

'balanced_wrapping': False,

'use_parentheses': False,

'order_by_type': True,

'atomic': False,

'lines_after_imports': -1,

'lines_between_sections': 1,

'lines_between_types': 0,

'combine_as_imports': False,

'combine_star': False,

'include_trailing_comma': False,

'from_first': False,

'verbose': False,

'quiet': False,

'force_adds': False,

'force_alphabetical_sort_within_sections': False,

'force_alphabetical_sort': False,

'force_grid_wrap': 0,

'force_sort_within_sections': False,

'show_diff': False,

'ignore_whitespace': False}

@lru_cache()

def from_path(path):

computed_settings = default.copy()

_update_settings_with_config(path, '.editorconfig', '~/.editorconfig', ('*', '*.py', '**.py'), computed_settings)

_update_settings_with_config(path, '.isort.cfg', '~/.isort.cfg', ('settings', 'isort'), computed_settings)

_update_settings_with_config(path, 'setup.cfg', None, ('isort', ), computed_settings)

_update_settings_with_config(path, 'tox.ini', None, ('isort', ), computed_settings)

return computed_settings

def _update_settings_with_config(path, name, default, sections, computed_settings):

editor_config_file = default and os.path.expanduser(default)

tries = 0

current_directory = path

while current_directory and tries < MAX_CONFIG_SEARCH_DEPTH:

potential_path = os.path.join(current_directory, native_str(name))

if os.path.exists(potential_path):

editor_config_file = potential_path

break

new_directory = os.path.split(current_directory)[0]

if current_directory == new_directory:

break

current_directory = new_directory

tries += 1

if editor_config_file and os.path.exists(editor_config_file):

_update_with_config_file(editor_config_file, sections, computed_settings)

def _update_with_config_file(file_path, sections, computed_settings):

settings = _get_config_data(file_path, sections).copy()

if not settings:

return

if file_path.endswith('.editorconfig'):

indent_style = settings.pop('indent_style', '').strip()

indent_size = settings.pop('indent_size', '').strip()

if indent_style == 'space':

computed_settings['indent'] = ' ' * (indent_size and int(indent_size) or 4)

elif indent_style == 'tab':

computed_settings['indent'] = '\t' * (indent_size and int(indent_size) or 1)

max_line_length = settings.pop('max_line_length', '').strip()

if max_line_length:

computed_settings['line_length'] = float('inf') if max_line_length == 'off' else int(max_line_length)

for key, value in itemsview(settings):

access_key = key.replace('not_', '').lower()

existing_value_type = type(default.get(access_key, ''))

if existing_value_type in (list, tuple):

# sections has fixed order values; no adding or substraction from any set

if access_key == 'sections':

computed_settings[access_key] = tuple(_as_list(value))

else:

existing_data = set(computed_settings.get(access_key, default.get(access_key)))

if key.startswith('not_'):

computed_settings[access_key] = list(existing_data.difference(_as_list(value)))

else:

computed_settings[access_key] = list(existing_data.union(_as_list(value)))

elif existing_value_type == bool and value.lower().strip() == 'false':

computed_settings[access_key] = False

elif key.startswith('known_'):

computed_settings[access_key] = list(_as_list(value))

elif key == 'force_grid_wrap':

try:

result = existing_value_type(value)

except ValueError:

# backwards compat

result = default.get(access_key) if value.lower().strip() == 'false' else 2

computed_settings[access_key] = result

else:

computed_settings[access_key] = existing_value_type(value)

def _as_list(value):

return filter(bool, [item.strip() for item in value.replace('\n', ',').split(',')])

@lru_cache()

def _get_config_data(file_path, sections):

with open(file_path, 'rU') as config_file:

if file_path.endswith('.editorconfig'):

line = '\n'

last_position = config_file.tell()

while line:

line = config_file.readline()

if '[' in line:

config_file.seek(last_position)

break

last_position = config_file.tell()

config = configparser.SafeConfigParser()

config.readfp(config_file)

settings = dict()

for section in sections:

if config.has_section(section):

settings.update(dict(config.items(section)))

return settings

return {}

def should_skip(filename, config, path='/'):

"""Returns True if the file should be skipped based on the passed in settings."""

for skip_path in config['skip']:

if posixpath.abspath(posixpath.join(path, filename)) == posixpath.abspath(skip_path.replace('\\', '/')):

return True

position = os.path.split(filename)

while position[1]:

if position[1] in config['skip']:

return True

position = os.path.split(position[0])

for glob in config['skip_glob']:

if fnmatch.fnmatch(filename, glob):

return True

return False