1117 lines
40 KiB
Python
1117 lines
40 KiB
Python
|
# -*- coding: utf-8 -*-
|
|||
|
|
#
|
|||
|
|
# Copyright (C) 2013-2017 Vinay Sajip.
|
|||
|
|
# Licensed to the Python Software Foundation under a contributor agreement.
|
|||
|
|
# See LICENSE.txt and CONTRIBUTORS.txt.
|
|||
|
|
#
|
|||
|
|
from __future__ import absolute_import
|
|||
|
|
|
|||
|
|
import os
|
|||
|
|
import re
|
|||
|
|
import sys
|
|||
|
|
|
|||
|
|
try:
|
|||
|
|
import ssl
|
|||
|
|
except ImportError: # pragma: no cover
|
|||
|
|
ssl = None
|
|||
|
|
|
|||
|
|
if sys.version_info[0] < 3: # pragma: no cover
|
|||
|
|
from StringIO import StringIO
|
|||
|
|
string_types = basestring,
|
|||
|
|
text_type = unicode
|
|||
|
|
from types import FileType as file_type
|
|||
|
|
import __builtin__ as builtins
|
|||
|
|
import ConfigParser as configparser
|
|||
|
|
from urlparse import urlparse, urlunparse, urljoin, urlsplit, urlunsplit
|
|||
|
|
from urllib import (urlretrieve, quote as _quote, unquote, url2pathname,
|
|||
|
|
pathname2url, ContentTooShortError, splittype)
|
|||
|
|
|
|||
|
|
def quote(s):
|
|||
|
|
if isinstance(s, unicode):
|
|||
|
|
s = s.encode('utf-8')
|
|||
|
|
return _quote(s)
|
|||
|
|
|
|||
|
|
import urllib2
|
|||
|
|
from urllib2 import (Request, urlopen, URLError, HTTPError,
|
|||
|
|
HTTPBasicAuthHandler, HTTPPasswordMgr,
|
|||
|
|
HTTPHandler, HTTPRedirectHandler,
|
|||
|
|
build_opener)
|
|||
|
|
if ssl:
|
|||
|
|
from urllib2 import HTTPSHandler
|
|||
|
|
import httplib
|
|||
|
|
import xmlrpclib
|
|||
|
|
import Queue as queue
|
|||
|
|
from HTMLParser import HTMLParser
|
|||
|
|
import htmlentitydefs
|
|||
|
|
raw_input = raw_input
|
|||
|
|
from itertools import ifilter as filter
|
|||
|
|
from itertools import ifilterfalse as filterfalse
|
|||
|
|
|
|||
|
|
# Leaving this around for now, in case it needs resurrecting in some way
|
|||
|
|
# _userprog = None
|
|||
|
|
# def splituser(host):
|
|||
|
|
# """splituser('user[:passwd]@host[:port]') --> 'user[:passwd]', 'host[:port]'."""
|
|||
|
|
# global _userprog
|
|||
|
|
# if _userprog is None:
|
|||
|
|
# import re
|
|||
|
|
# _userprog = re.compile('^(.*)@(.*)$')
|
|||
|
|
|
|||
|
|
# match = _userprog.match(host)
|
|||
|
|
# if match: return match.group(1, 2)
|
|||
|
|
# return None, host
|
|||
|
|
|
|||
|
|
else: # pragma: no cover
|
|||
|
|
from io import StringIO
|
|||
|
|
string_types = str,
|
|||
|
|
text_type = str
|
|||
|
|
from io import TextIOWrapper as file_type
|
|||
|
|
import builtins
|
|||
|
|
import configparser
|
|||
|
|
import shutil
|
|||
|
|
from urllib.parse import (urlparse, urlunparse, urljoin, quote,
|
|||
|
|
unquote, urlsplit, urlunsplit, splittype)
|
|||
|
|
from urllib.request import (urlopen, urlretrieve, Request, url2pathname,
|
|||
|
|
pathname2url,
|
|||
|
|
HTTPBasicAuthHandler, HTTPPasswordMgr,
|
|||
|
|
HTTPHandler, HTTPRedirectHandler,
|
|||
|
|
build_opener)
|
|||
|
|
if ssl:
|
|||
|
|
from urllib.request import HTTPSHandler
|
|||
|
|
from urllib.error import HTTPError, URLError, ContentTooShortError
|
|||
|
|
import http.client as httplib
|
|||
|
|
import urllib.request as urllib2
|
|||
|
|
import xmlrpc.client as xmlrpclib
|
|||
|
|
import queue
|
|||
|
|
from html.parser import HTMLParser
|
|||
|
|
import html.entities as htmlentitydefs
|
|||
|
|
raw_input = input
|
|||
|
|
from itertools import filterfalse
|
|||
|
|
filter = filter
|
|||
|
|
|
|||
|
|
|
|||
|
|
try:
|
|||
|
|
from ssl import match_hostname, CertificateError
|
|||
|
|
except ImportError: # pragma: no cover
|
|||
|
|
class CertificateError(ValueError):
|
|||
|
|
pass
|
|||
|
|
|
|||
|
|
|
|||
|
|
def _dnsname_match(dn, hostname, max_wildcards=1):
|
|||
|
|
"""Matching according to RFC 6125, section 6.4.3
|
|||
|
|
|
|||
|
|
http://tools.ietf.org/html/rfc6125#section-6.4.3
|
|||
|
|
"""
|
|||
|
|
pats = []
|
|||
|
|
if not dn:
|
|||
|
|
return False
|
|||
|
|
|
|||
|
|
parts = dn.split('.')
|
|||
|
|
leftmost, remainder = parts[0], parts[1:]
|
|||
|
|
|
|||
|
|
wildcards = leftmost.count('*')
|
|||
|
|
if wildcards > max_wildcards:
|
|||
|
|
# Issue #17980: avoid denials of service by refusing more
|
|||
|
|
# than one wildcard per fragment. A survey of established
|
|||
|
|
# policy among SSL implementations showed it to be a
|
|||
|
|
# reasonable choice.
|
|||
|
|
raise CertificateError(
|
|||
|
|
"too many wildcards in certificate DNS name: " + repr(dn))
|
|||
|
|
|
|||
|
|
# speed up common case w/o wildcards
|
|||
|
|
if not wildcards:
|
|||
|
|
return dn.lower() == hostname.lower()
|
|||
|
|
|
|||
|
|
# RFC 6125, section 6.4.3, subitem 1.
|
|||
|
|
# The client SHOULD NOT attempt to match a presented identifier in which
|
|||
|
|
# the wildcard character comprises a label other than the left-most label.
|
|||
|
|
if leftmost == '*':
|
|||
|
|
# When '*' is a fragment by itself, it matches a non-empty dotless
|
|||
|
|
# fragment.
|
|||
|
|
pats.append('[^.]+')
|
|||
|
|
elif leftmost.startswith('xn--') or hostname.startswith('xn--'):
|
|||
|
|
# RFC 6125, section 6.4.3, subitem 3.
|
|||
|
|
# The client SHOULD NOT attempt to match a presented identifier
|
|||
|
|
# where the wildcard character is embedded within an A-label or
|
|||
|
|
# U-label of an internationalized domain name.
|
|||
|
|
pats.append(re.escape(leftmost))
|
|||
|
|
else:
|
|||
|
|
# Otherwise, '*' matches any dotless string, e.g. www*
|
|||
|
|
pats.append(re.escape(leftmost).replace(r'\*', '[^.]*'))
|
|||
|
|
|
|||
|
|
# add the remaining fragments, ignore any wildcards
|
|||
|
|
for frag in remainder:
|
|||
|
|
pats.append(re.escape(frag))
|
|||
|
|
|
|||
|
|
pat = re.compile(r'\A' + r'\.'.join(pats) + r'\Z', re.IGNORECASE)
|
|||
|
|
return pat.match(hostname)
|
|||
|
|
|
|||
|
|
|
|||
|
|
def match_hostname(cert, hostname):
|
|||
|
|
"""Verify that *cert* (in decoded format as returned by
|
|||
|
|
SSLSocket.getpeercert()) matches the *hostname*. RFC 2818 and RFC 6125
|
|||
|
|
rules are followed, but IP addresses are not accepted for *hostname*.
|
|||
|
|
|
|||
|
|
CertificateError is raised on failure. On success, the function
|
|||
|
|
returns nothing.
|
|||
|
|
"""
|
|||
|
|
if not cert:
|
|||
|
|
raise ValueError("empty or no certificate, match_hostname needs a "
|
|||
|
|
"SSL socket or SSL context with either "
|
|||
|
|
"CERT_OPTIONAL or CERT_REQUIRED")
|
|||
|
|
dnsnames = []
|
|||
|
|
san = cert.get('subjectAltName', ())
|
|||
|
|
for key, value in san:
|
|||
|
|
if key == 'DNS':
|
|||
|
|
if _dnsname_match(value, hostname):
|
|||
|
|
return
|
|||
|
|
dnsnames.append(value)
|
|||
|
|
if not dnsnames:
|
|||
|
|
# The subject is only checked when there is no dNSName entry
|
|||
|
|
# in subjectAltName
|
|||
|
|
for sub in cert.get('subject', ()):
|
|||
|
|
for key, value in sub:
|
|||
|
|
# XXX according to RFC 2818, the most specific Common Name
|
|||
|
|
# must be used.
|
|||
|
|
if key == 'commonName':
|
|||
|
|
if _dnsname_match(value, hostname):
|
|||
|
|
return
|
|||
|
|
dnsnames.append(value)
|
|||
|
|
if len(dnsnames) > 1:
|
|||
|
|
raise CertificateError("hostname %r "
|
|||
|
|
"doesn't match either of %s"
|
|||
|
|
% (hostname, ', '.join(map(repr, dnsnames))))
|
|||
|
|
elif len(dnsnames) == 1:
|
|||
|
|
raise CertificateError("hostname %r "
|
|||
|
|
"doesn't match %r"
|
|||
|
|
% (hostname, dnsnames[0]))
|
|||
|
|
else:
|
|||
|
|
raise CertificateError("no appropriate commonName or "
|
|||
|
|
"subjectAltName fields were found")
|
|||
|
|
|
|||
|
|
|
|||
|
|
try:
|
|||
|
|
from types import SimpleNamespace as Container
|
|||
|
|
except ImportError: # pragma: no cover
|
|||
|
|
class Container(object):
|
|||
|
|
"""
|
|||
|
|
A generic container for when multiple values need to be returned
|
|||
|
|
"""
|
|||
|
|
def __init__(self, **kwargs):
|
|||
|
|
self.__dict__.update(kwargs)
|
|||
|
|
|
|||
|
|
|
|||
|
|
try:
|
|||
|
|
from shutil import which
|
|||
|
|
except ImportError: # pragma: no cover
|
|||
|
|
# Implementation from Python 3.3
|
|||
|
|
def which(cmd, mode=os.F_OK | os.X_OK, path=None):
|
|||
|
|
"""Given a command, mode, and a PATH string, return the path which
|
|||
|
|
conforms to the given mode on the PATH, or None if there is no such
|
|||
|
|
file.
|
|||
|
|
|
|||
|
|
`mode` defaults to os.F_OK | os.X_OK. `path` defaults to the result
|
|||
|
|
of os.environ.get("PATH"), or can be overridden with a custom search
|
|||
|
|
path.
|
|||
|
|
|
|||
|
|
"""
|
|||
|
|
# Check that a given file can be accessed with the correct mode.
|
|||
|
|
# Additionally check that `file` is not a directory, as on Windows
|
|||
|
|
# directories pass the os.access check.
|
|||
|
|
def _access_check(fn, mode):
|
|||
|
|
return (os.path.exists(fn) and os.access(fn, mode)
|
|||
|
|
and not os.path.isdir(fn))
|
|||
|
|
|
|||
|
|
# If we're given a path with a directory part, look it up directly rather
|
|||
|
|
# than referring to PATH directories. This includes checking relative to the
|
|||
|
|
# current directory, e.g. ./script
|
|||
|
|
if os.path.dirname(cmd):
|
|||
|
|
if _access_check(cmd, mode):
|
|||
|
|
return cmd
|
|||
|
|
return None
|
|||
|
|
|
|||
|
|
if path is None:
|
|||
|
|
path = os.environ.get("PATH", os.defpath)
|
|||
|
|
if not path:
|
|||
|
|
return None
|
|||
|
|
path = path.split(os.pathsep)
|
|||
|
|
|
|||
|
|
if sys.platform == "win32":
|
|||
|
|
# The current directory takes precedence on Windows.
|
|||
|
|
if not os.curdir in path:
|
|||
|
|
path.insert(0, os.curdir)
|
|||
|
|
|
|||
|
|
# PATHEXT is necessary to check on Windows.
|
|||
|
|
pathext = os.environ.get("PATHEXT", "").split(os.pathsep)
|
|||
|
|
# See if the given file matches any of the expected path extensions.
|
|||
|
|
# This will allow us to short circuit when given "python.exe".
|
|||
|
|
# If it does match, only test that one, otherwise we have to try
|
|||
|
|
# others.
|
|||
|
|
if any(cmd.lower().endswith(ext.lower()) for ext in pathext):
|
|||
|
|
files = [cmd]
|
|||
|
|
else:
|
|||
|
|
files = [cmd + ext for ext in pathext]
|
|||
|
|
else:
|
|||
|
|
# On other platforms you don't have things like PATHEXT to tell you
|
|||
|
|
# what file suffixes are executable, so just pass on cmd as-is.
|
|||
|
|
files = [cmd]
|
|||
|
|
|
|||
|
|
seen = set()
|
|||
|
|
for dir in path:
|
|||
|
|
normdir = os.path.normcase(dir)
|
|||
|
|
if not normdir in seen:
|
|||
|
|
seen.add(normdir)
|
|||
|
|
for thefile in files:
|
|||
|
|
name = os.path.join(dir, thefile)
|
|||
|
|
if _access_check(name, mode):
|
|||
|
|
return name
|
|||
|
|
return None
|
|||
|
|
|
|||
|
|
|
|||
|
|
# ZipFile is a context manager in 2.7, but not in 2.6
|
|||
|
|
|
|||
|
|
from zipfile import ZipFile as BaseZipFile
|
|||
|
|
|
|||
|
|
if hasattr(BaseZipFile, '__enter__'): # pragma: no cover
|
|||
|
|
ZipFile = BaseZipFile
|
|||
|
|
else: # pragma: no cover
|
|||
|
|
from zipfile import ZipExtFile as BaseZipExtFile
|
|||
|
|
|
|||
|
|
class ZipExtFile(BaseZipExtFile):
|
|||
|
|
def __init__(self, base):
|
|||
|
|
self.__dict__.update(base.__dict__)
|
|||
|
|
|
|||
|
|
def __enter__(self):
|
|||
|
|
return self
|
|||
|
|
|
|||
|
|
def __exit__(self, *exc_info):
|
|||
|
|
self.close()
|
|||
|
|
# return None, so if an exception occurred, it will propagate
|
|||
|
|
|
|||
|
|
class ZipFile(BaseZipFile):
|
|||
|
|
def __enter__(self):
|
|||
|
|
return self
|
|||
|
|
|
|||
|
|
def __exit__(self, *exc_info):
|
|||
|
|
self.close()
|
|||
|
|
# return None, so if an exception occurred, it will propagate
|
|||
|
|
|
|||
|
|
def open(self, *args, **kwargs):
|
|||
|
|
base = BaseZipFile.open(self, *args, **kwargs)
|
|||
|
|
return ZipExtFile(base)
|
|||
|
|
|
|||
|
|
try:
|
|||
|
|
from platform import python_implementation
|
|||
|
|
except ImportError: # pragma: no cover
|
|||
|
|
def python_implementation():
|
|||
|
|
"""Return a string identifying the Python implementation."""
|
|||
|
|
if 'PyPy' in sys.version:
|
|||
|
|
return 'PyPy'
|
|||
|
|
if os.name == 'java':
|
|||
|
|
return 'Jython'
|
|||
|
|
if sys.version.startswith('IronPython'):
|
|||
|
|
return 'IronPython'
|
|||
|
|
return 'CPython'
|
|||
|
|
|
|||
|
|
import shutil
|
|||
|
|
import sysconfig
|
|||
|
|
|
|||
|
|
try:
|
|||
|
|
callable = callable
|
|||
|
|
except NameError: # pragma: no cover
|
|||
|
|
from collections.abc import Callable
|
|||
|
|
|
|||
|
|
def callable(obj):
|
|||
|
|
return isinstance(obj, Callable)
|
|||
|
|
|
|||
|
|
|
|||
|
|
try:
|
|||
|
|
fsencode = os.fsencode
|
|||
|
|
fsdecode = os.fsdecode
|
|||
|
|
except AttributeError: # pragma: no cover
|
|||
|
|
# Issue #99: on some systems (e.g. containerised),
|
|||
|
|
# sys.getfilesystemencoding() returns None, and we need a real value,
|
|||
|
|
# so fall back to utf-8. From the CPython 2.7 docs relating to Unix and
|
|||
|
|
# sys.getfilesystemencoding(): the return value is "the user’s preference
|
|||
|
|
# according to the result of nl_langinfo(CODESET), or None if the
|
|||
|
|
# nl_langinfo(CODESET) failed."
|
|||
|
|
_fsencoding = sys.getfilesystemencoding() or 'utf-8'
|
|||
|
|
if _fsencoding == 'mbcs':
|
|||
|
|
_fserrors = 'strict'
|
|||
|
|
else:
|
|||
|
|
_fserrors = 'surrogateescape'
|
|||
|
|
|
|||
|
|
def fsencode(filename):
|
|||
|
|
if isinstance(filename, bytes):
|
|||
|
|
return filename
|
|||
|
|
elif isinstance(filename, text_type):
|
|||
|
|
return filename.encode(_fsencoding, _fserrors)
|
|||
|
|
else:
|
|||
|
|
raise TypeError("expect bytes or str, not %s" %
|
|||
|
|
type(filename).__name__)
|
|||
|
|
|
|||
|
|
def fsdecode(filename):
|
|||
|
|
if isinstance(filename, text_type):
|
|||
|
|
return filename
|
|||
|
|
elif isinstance(filename, bytes):
|
|||
|
|
return filename.decode(_fsencoding, _fserrors)
|
|||
|
|
else:
|
|||
|
|
raise TypeError("expect bytes or str, not %s" %
|
|||
|
|
type(filename).__name__)
|
|||
|
|
|
|||
|
|
try:
|
|||
|
|
from tokenize import detect_encoding
|
|||
|
|
except ImportError: # pragma: no cover
|
|||
|
|
from codecs import BOM_UTF8, lookup
|
|||
|
|
import re
|
|||
|
|
|
|||
|
|
cookie_re = re.compile(r"coding[:=]\s*([-\w.]+)")
|
|||
|
|
|
|||
|
|
def _get_normal_name(orig_enc):
|
|||
|
|
"""Imitates get_normal_name in tokenizer.c."""
|
|||
|
|
# Only care about the first 12 characters.
|
|||
|
|
enc = orig_enc[:12].lower().replace("_", "-")
|
|||
|
|
if enc == "utf-8" or enc.startswith("utf-8-"):
|
|||
|
|
return "utf-8"
|
|||
|
|
if enc in ("latin-1", "iso-8859-1", "iso-latin-1") or \
|
|||
|
|
enc.startswith(("latin-1-", "iso-8859-1-", "iso-latin-1-")):
|
|||
|
|
return "iso-8859-1"
|
|||
|
|
return orig_enc
|
|||
|
|
|
|||
|
|
def detect_encoding(readline):
|
|||
|
|
"""
|
|||
|
|
The detect_encoding() function is used to detect the encoding that should
|
|||
|
|
be used to decode a Python source file. It requires one argument, readline,
|
|||
|
|
in the same way as the tokenize() generator.
|
|||
|
|
|
|||
|
|
It will call readline a maximum of twice, and return the encoding used
|
|||
|
|
(as a string) and a list of any lines (left as bytes) it has read in.
|
|||
|
|
|
|||
|
|
It detects the encoding from the presence of a utf-8 bom or an encoding
|
|||
|
|
cookie as specified in pep-0263. If both a bom and a cookie are present,
|
|||
|
|
but disagree, a SyntaxError will be raised. If the encoding cookie is an
|
|||
|
|
invalid charset, raise a SyntaxError. Note that if a utf-8 bom is found,
|
|||
|
|
'utf-8-sig' is returned.
|
|||
|
|
|
|||
|
|
If no encoding is specified, then the default of 'utf-8' will be returned.
|
|||
|
|
"""
|
|||
|
|
try:
|
|||
|
|
filename = readline.__self__.name
|
|||
|
|
except AttributeError:
|
|||
|
|
filename = None
|
|||
|
|
bom_found = False
|
|||
|
|
encoding = None
|
|||
|
|
default = 'utf-8'
|
|||
|
|
def read_or_stop():
|
|||
|
|
try:
|
|||
|
|
return readline()
|
|||
|
|
except StopIteration:
|
|||
|
|
return b''
|
|||
|
|
|
|||
|
|
def find_cookie(line):
|
|||
|
|
try:
|
|||
|
|
# Decode as UTF-8. Either the line is an encoding declaration,
|
|||
|
|
# in which case it should be pure ASCII, or it must be UTF-8
|
|||
|
|
# per default encoding.
|
|||
|
|
line_string = line.decode('utf-8')
|
|||
|
|
except UnicodeDecodeError:
|
|||
|
|
msg = "invalid or missing encoding declaration"
|
|||
|
|
if filename is not None:
|
|||
|
|
msg = '{} for {!r}'.format(msg, filename)
|
|||
|
|
raise SyntaxError(msg)
|
|||
|
|
|
|||
|
|
matches = cookie_re.findall(line_string)
|
|||
|
|
if not matches:
|
|||
|
|
return None
|
|||
|
|
encoding = _get_normal_name(matches[0])
|
|||
|
|
try:
|
|||
|
|
codec = lookup(encoding)
|
|||
|
|
except LookupError:
|
|||
|
|
# This behaviour mimics the Python interpreter
|
|||
|
|
if filename is None:
|
|||
|
|
msg = "unknown encoding: " + encoding
|
|||
|
|
else:
|
|||
|
|
msg = "unknown encoding for {!r}: {}".format(filename,
|
|||
|
|
encoding)
|
|||
|
|
raise SyntaxError(msg)
|
|||
|
|
|
|||
|
|
if bom_found:
|
|||
|
|
if codec.name != 'utf-8':
|
|||
|
|
# This behaviour mimics the Python interpreter
|
|||
|
|
if filename is None:
|
|||
|
|
msg = 'encoding problem: utf-8'
|
|||
|
|
else:
|
|||
|
|
msg = 'encoding problem for {!r}: utf-8'.format(filename)
|
|||
|
|
raise SyntaxError(msg)
|
|||
|
|
encoding += '-sig'
|
|||
|
|
return encoding
|
|||
|
|
|
|||
|
|
first = read_or_stop()
|
|||
|
|
if first.startswith(BOM_UTF8):
|
|||
|
|
bom_found = True
|
|||
|
|
first = first[3:]
|
|||
|
|
default = 'utf-8-sig'
|
|||
|
|
if not first:
|
|||
|
|
return default, []
|
|||
|
|
|
|||
|
|
encoding = find_cookie(first)
|
|||
|
|
if encoding:
|
|||
|
|
return encoding, [first]
|
|||
|
|
|
|||
|
|
second = read_or_stop()
|
|||
|
|
if not second:
|
|||
|
|
return default, [first]
|
|||
|
|
|
|||
|
|
encoding = find_cookie(second)
|
|||
|
|
if encoding:
|
|||
|
|
return encoding, [first, second]
|
|||
|
|
|
|||
|
|
return default, [first, second]
|
|||
|
|
|
|||
|
|
# For converting & <-> & etc.
|
|||
|
|
try:
|
|||
|
|
from html import escape
|
|||
|
|
except ImportError:
|
|||
|
|
from cgi import escape
|
|||
|
|
if sys.version_info[:2] < (3, 4):
|
|||
|
|
unescape = HTMLParser().unescape
|
|||
|
|
else:
|
|||
|
|
from html import unescape
|
|||
|
|
|
|||
|
|
try:
|
|||
|
|
from collections import ChainMap
|
|||
|
|
except ImportError: # pragma: no cover
|
|||
|
|
from collections import MutableMapping
|
|||
|
|
|
|||
|
|
try:
|
|||
|
|
from reprlib import recursive_repr as _recursive_repr
|
|||
|
|
except ImportError:
|
|||
|
|
def _recursive_repr(fillvalue='...'):
|
|||
|
|
'''
|
|||
|
|
Decorator to make a repr function return fillvalue for a recursive
|
|||
|
|
call
|
|||
|
|
'''
|
|||
|
|
|
|||
|
|
def decorating_function(user_function):
|
|||
|
|
repr_running = set()
|
|||
|
|
|
|||
|
|
def wrapper(self):
|
|||
|
|
key = id(self), get_ident()
|
|||
|
|
if key in repr_running:
|
|||
|
|
return fillvalue
|
|||
|
|
repr_running.add(key)
|
|||
|
|
try:
|
|||
|
|
result = user_function(self)
|
|||
|
|
finally:
|
|||
|
|
repr_running.discard(key)
|
|||
|
|
return result
|
|||
|
|
|
|||
|
|
# Can't use functools.wraps() here because of bootstrap issues
|
|||
|
|
wrapper.__module__ = getattr(user_function, '__module__')
|
|||
|
|
wrapper.__doc__ = getattr(user_function, '__doc__')
|
|||
|
|
wrapper.__name__ = getattr(user_function, '__name__')
|
|||
|
|
wrapper.__annotations__ = getattr(user_function, '__annotations__', {})
|
|||
|
|
return wrapper
|
|||
|
|
|
|||
|
|
return decorating_function
|
|||
|
|
|
|||
|
|
class ChainMap(MutableMapping):
|
|||
|
|
''' A ChainMap groups multiple dicts (or other mappings) together
|
|||
|
|
to create a single, updateable view.
|
|||
|
|
|
|||
|
|
The underlying mappings are stored in a list. That list is public and can
|
|||
|
|
accessed or updated using the *maps* attribute. There is no other state.
|
|||
|
|
|
|||
|
|
Lookups search the underlying mappings successively until a key is found.
|
|||
|
|
In contrast, writes, updates, and deletions only operate on the first
|
|||
|
|
mapping.
|
|||
|
|
|
|||
|
|
'''
|
|||
|
|
|
|||
|
|
def __init__(self, *maps):
|
|||
|
|
'''Initialize a ChainMap by setting *maps* to the given mappings.
|
|||
|
|
If no mappings are provided, a single empty dictionary is used.
|
|||
|
|
|
|||
|
|
'''
|
|||
|
|
self.maps = list(maps) or [{}] # always at least one map
|
|||
|
|
|
|||
|
|
def __missing__(self, key):
|
|||
|
|
raise KeyError(key)
|
|||
|
|
|
|||
|
|
def __getitem__(self, key):
|
|||
|
|
for mapping in self.maps:
|
|||
|
|
try:
|
|||
|
|
return mapping[key] # can't use 'key in mapping' with defaultdict
|
|||
|
|
except KeyError:
|
|||
|
|
pass
|
|||
|
|
return self.__missing__(key) # support subclasses that define __missing__
|
|||
|
|
|
|||
|
|
def get(self, key, default=None):
|
|||
|
|
return self[key] if key in self else default
|
|||
|
|
|
|||
|
|
def __len__(self):
|
|||
|
|
return len(set().union(*self.maps)) # reuses stored hash values if possible
|
|||
|
|
|
|||
|
|
def __iter__(self):
|
|||
|
|
return iter(set().union(*self.maps))
|
|||
|
|
|
|||
|
|
def __contains__(self, key):
|
|||
|
|
return any(key in m for m in self.maps)
|
|||
|
|
|
|||
|
|
def __bool__(self):
|
|||
|
|
return any(self.maps)
|
|||
|
|
|
|||
|
|
@_recursive_repr()
|
|||
|
|
def __repr__(self):
|
|||
|
|
return '{0.__class__.__name__}({1})'.format(
|
|||
|
|
self, ', '.join(map(repr, self.maps)))
|
|||
|
|
|
|||
|
|
@classmethod
|
|||
|
|
def fromkeys(cls, iterable, *args):
|
|||
|
|
'Create a ChainMap with a single dict created from the iterable.'
|
|||
|
|
return cls(dict.fromkeys(iterable, *args))
|
|||
|
|
|
|||
|
|
def copy(self):
|
|||
|
|
'New ChainMap or subclass with a new copy of maps[0] and refs to maps[1:]'
|
|||
|
|
return self.__class__(self.maps[0].copy(), *self.maps[1:])
|
|||
|
|
|
|||
|
|
__copy__ = copy
|
|||
|
|
|
|||
|
|
def new_child(self): # like Django's Context.push()
|
|||
|
|
'New ChainMap with a new dict followed by all previous maps.'
|
|||
|
|
return self.__class__({}, *self.maps)
|
|||
|
|
|
|||
|
|
@property
|
|||
|
|
def parents(self): # like Django's Context.pop()
|
|||
|
|
'New ChainMap from maps[1:].'
|
|||
|
|
return self.__class__(*self.maps[1:])
|
|||
|
|
|
|||
|
|
def __setitem__(self, key, value):
|
|||
|
|
self.maps[0][key] = value
|
|||
|
|
|
|||
|
|
def __delitem__(self, key):
|
|||
|
|
try:
|
|||
|
|
del self.maps[0][key]
|
|||
|
|
except KeyError:
|
|||
|
|
raise KeyError('Key not found in the first mapping: {!r}'.format(key))
|
|||
|
|
|
|||
|
|
def popitem(self):
|
|||
|
|
'Remove and return an item pair from maps[0]. Raise KeyError is maps[0] is empty.'
|
|||
|
|
try:
|
|||
|
|
return self.maps[0].popitem()
|
|||
|
|
except KeyError:
|
|||
|
|
raise KeyError('No keys found in the first mapping.')
|
|||
|
|
|
|||
|
|
def pop(self, key, *args):
|
|||
|
|
'Remove *key* from maps[0] and return its value. Raise KeyError if *key* not in maps[0].'
|
|||
|
|
try:
|
|||
|
|
return self.maps[0].pop(key, *args)
|
|||
|
|
except KeyError:
|
|||
|
|
raise KeyError('Key not found in the first mapping: {!r}'.format(key))
|
|||
|
|
|
|||
|
|
def clear(self):
|
|||
|
|
'Clear maps[0], leaving maps[1:] intact.'
|
|||
|
|
self.maps[0].clear()
|
|||
|
|
|
|||
|
|
try:
|
|||
|
|
from importlib.util import cache_from_source # Python >= 3.4
|
|||
|
|
except ImportError: # pragma: no cover
|
|||
|
|
def cache_from_source(path, debug_override=None):
|
|||
|
|
assert path.endswith('.py')
|
|||
|
|
if debug_override is None:
|
|||
|
|
debug_override = __debug__
|
|||
|
|
if debug_override:
|
|||
|
|
suffix = 'c'
|
|||
|
|
else:
|
|||
|
|
suffix = 'o'
|
|||
|
|
return path + suffix
|
|||
|
|
|
|||
|
|
try:
|
|||
|
|
from collections import OrderedDict
|
|||
|
|
except ImportError: # pragma: no cover
|
|||
|
|
## {{{ http://code.activestate.com/recipes/576693/ (r9)
|
|||
|
|
# Backport of OrderedDict() class that runs on Python 2.4, 2.5, 2.6, 2.7 and pypy.
|
|||
|
|
# Passes Python2.7's test suite and incorporates all the latest updates.
|
|||
|
|
try:
|
|||
|
|
from thread import get_ident as _get_ident
|
|||
|
|
except ImportError:
|
|||
|
|
from dummy_thread import get_ident as _get_ident
|
|||
|
|
|
|||
|
|
try:
|
|||
|
|
from _abcoll import KeysView, ValuesView, ItemsView
|
|||
|
|
except ImportError:
|
|||
|
|
pass
|
|||
|
|
|
|||
|
|
|
|||
|
|
class OrderedDict(dict):
|
|||
|
|
'Dictionary that remembers insertion order'
|
|||
|
|
# An inherited dict maps keys to values.
|
|||
|
|
# The inherited dict provides __getitem__, __len__, __contains__, and get.
|
|||
|
|
# The remaining methods are order-aware.
|
|||
|
|
# Big-O running times for all methods are the same as for regular dictionaries.
|
|||
|
|
|
|||
|
|
# The internal self.__map dictionary maps keys to links in a doubly linked list.
|
|||
|
|
# The circular doubly linked list starts and ends with a sentinel element.
|
|||
|
|
# The sentinel element never gets deleted (this simplifies the algorithm).
|
|||
|
|
# Each link is stored as a list of length three: [PREV, NEXT, KEY].
|
|||
|
|
|
|||
|
|
def __init__(self, *args, **kwds):
|
|||
|
|
'''Initialize an ordered dictionary. Signature is the same as for
|
|||
|
|
regular dictionaries, but keyword arguments are not recommended
|
|||
|
|
because their insertion order is arbitrary.
|
|||
|
|
|
|||
|
|
'''
|
|||
|
|
if len(args) > 1:
|
|||
|
|
raise TypeError('expected at most 1 arguments, got %d' % len(args))
|
|||
|
|
try:
|
|||
|
|
self.__root
|
|||
|
|
except AttributeError:
|
|||
|
|
self.__root = root = [] # sentinel node
|
|||
|
|
root[:] = [root, root, None]
|
|||
|
|
self.__map = {}
|
|||
|
|
self.__update(*args, **kwds)
|
|||
|
|
|
|||
|
|
def __setitem__(self, key, value, dict_setitem=dict.__setitem__):
|
|||
|
|
'od.__setitem__(i, y) <==> od[i]=y'
|
|||
|
|
# Setting a new item creates a new link which goes at the end of the linked
|
|||
|
|
# list, and the inherited dictionary is updated with the new key/value pair.
|
|||
|
|
if key not in self:
|
|||
|
|
root = self.__root
|
|||
|
|
last = root[0]
|
|||
|
|
last[1] = root[0] = self.__map[key] = [last, root, key]
|
|||
|
|
dict_setitem(self, key, value)
|
|||
|
|
|
|||
|
|
def __delitem__(self, key, dict_delitem=dict.__delitem__):
|
|||
|
|
'od.__delitem__(y) <==> del od[y]'
|
|||
|
|
# Deleting an existing item uses self.__map to find the link which is
|
|||
|
|
# then removed by updating the links in the predecessor and successor nodes.
|
|||
|
|
dict_delitem(self, key)
|
|||
|
|
link_prev, link_next, key = self.__map.pop(key)
|
|||
|
|
link_prev[1] = link_next
|
|||
|
|
link_next[0] = link_prev
|
|||
|
|
|
|||
|
|
def __iter__(self):
|
|||
|
|
'od.__iter__() <==> iter(od)'
|
|||
|
|
root = self.__root
|
|||
|
|
curr = root[1]
|
|||
|
|
while curr is not root:
|
|||
|
|
yield curr[2]
|
|||
|
|
curr = curr[1]
|
|||
|
|
|
|||
|
|
def __reversed__(self):
|
|||
|
|
'od.__reversed__() <==> reversed(od)'
|
|||
|
|
root = self.__root
|
|||
|
|
curr = root[0]
|
|||
|
|
while curr is not root:
|
|||
|
|
yield curr[2]
|
|||
|
|
curr = curr[0]
|
|||
|
|
|
|||
|
|
def clear(self):
|
|||
|
|
'od.clear() -> None. Remove all items from od.'
|
|||
|
|
try:
|
|||
|
|
for node in self.__map.itervalues():
|
|||
|
|
del node[:]
|
|||
|
|
root = self.__root
|
|||
|
|
root[:] = [root, root, None]
|
|||
|
|
self.__map.clear()
|
|||
|
|
except AttributeError:
|
|||
|
|
pass
|
|||
|
|
dict.clear(self)
|
|||
|
|
|
|||
|
|
def popitem(self, last=True):
|
|||
|
|
'''od.popitem() -> (k, v), return and remove a (key, value) pair.
|
|||
|
|
Pairs are returned in LIFO order if last is true or FIFO order if false.
|
|||
|
|
|
|||
|
|
'''
|
|||
|
|
if not self:
|
|||
|
|
raise KeyError('dictionary is empty')
|
|||
|
|
root = self.__root
|
|||
|
|
if last:
|
|||
|
|
link = root[0]
|
|||
|
|
link_prev = link[0]
|
|||
|
|
link_prev[1] = root
|
|||
|
|
root[0] = link_prev
|
|||
|
|
else:
|
|||
|
|
link = root[1]
|
|||
|
|
link_next = link[1]
|
|||
|
|
root[1] = link_next
|
|||
|
|
link_next[0] = root
|
|||
|
|
key = link[2]
|
|||
|
|
del self.__map[key]
|
|||
|
|
value = dict.pop(self, key)
|
|||
|
|
return key, value
|
|||
|
|
|
|||
|
|
# -- the following methods do not depend on the internal structure --
|
|||
|
|
|
|||
|
|
def keys(self):
|
|||
|
|
'od.keys() -> list of keys in od'
|
|||
|
|
return list(self)
|
|||
|
|
|
|||
|
|
def values(self):
|
|||
|
|
'od.values() -> list of values in od'
|
|||
|
|
return [self[key] for key in self]
|
|||
|
|
|
|||
|
|
def items(self):
|
|||
|
|
'od.items() -> list of (key, value) pairs in od'
|
|||
|
|
return [(key, self[key]) for key in self]
|
|||
|
|
|
|||
|
|
def iterkeys(self):
|
|||
|
|
'od.iterkeys() -> an iterator over the keys in od'
|
|||
|
|
return iter(self)
|
|||
|
|
|
|||
|
|
def itervalues(self):
|
|||
|
|
'od.itervalues -> an iterator over the values in od'
|
|||
|
|
for k in self:
|
|||
|
|
yield self[k]
|
|||
|
|
|
|||
|
|
def iteritems(self):
|
|||
|
|
'od.iteritems -> an iterator over the (key, value) items in od'
|
|||
|
|
for k in self:
|
|||
|
|
yield (k, self[k])
|
|||
|
|
|
|||
|
|
def update(*args, **kwds):
|
|||
|
|
'''od.update(E, **F) -> None. Update od from dict/iterable E and F.
|
|||
|
|
|
|||
|
|
If E is a dict instance, does: for k in E: od[k] = E[k]
|
|||
|
|
If E has a .keys() method, does: for k in E.keys(): od[k] = E[k]
|
|||
|
|
Or if E is an iterable of items, does: for k, v in E: od[k] = v
|
|||
|
|
In either case, this is followed by: for k, v in F.items(): od[k] = v
|
|||
|
|
|
|||
|
|
'''
|
|||
|
|
if len(args) > 2:
|
|||
|
|
raise TypeError('update() takes at most 2 positional '
|
|||
|
|
'arguments (%d given)' % (len(args),))
|
|||
|
|
elif not args:
|
|||
|
|
raise TypeError('update() takes at least 1 argument (0 given)')
|
|||
|
|
self = args[0]
|
|||
|
|
# Make progressively weaker assumptions about "other"
|
|||
|
|
other = ()
|
|||
|
|
if len(args) == 2:
|
|||
|
|
other = args[1]
|
|||
|
|
if isinstance(other, dict):
|
|||
|
|
for key in other:
|
|||
|
|
self[key] = other[key]
|
|||
|
|
elif hasattr(other, 'keys'):
|
|||
|
|
for key in other.keys():
|
|||
|
|
self[key] = other[key]
|
|||
|
|
else:
|
|||
|
|
for key, value in other:
|
|||
|
|
self[key] = value
|
|||
|
|
for key, value in kwds.items():
|
|||
|
|
self[key] = value
|
|||
|
|
|
|||
|
|
__update = update # let subclasses override update without breaking __init__
|
|||
|
|
|
|||
|
|
__marker = object()
|
|||
|
|
|
|||
|
|
def pop(self, key, default=__marker):
|
|||
|
|
'''od.pop(k[,d]) -> v, remove specified key and return the corresponding value.
|
|||
|
|
If key is not found, d is returned if given, otherwise KeyError is raised.
|
|||
|
|
|
|||
|
|
'''
|
|||
|
|
if key in self:
|
|||
|
|
result = self[key]
|
|||
|
|
del self[key]
|
|||
|
|
return result
|
|||
|
|
if default is self.__marker:
|
|||
|
|
raise KeyError(key)
|
|||
|
|
return default
|
|||
|
|
|
|||
|
|
def setdefault(self, key, default=None):
|
|||
|
|
'od.setdefault(k[,d]) -> od.get(k,d), also set od[k]=d if k not in od'
|
|||
|
|
if key in self:
|
|||
|
|
return self[key]
|
|||
|
|
self[key] = default
|
|||
|
|
return default
|
|||
|
|
|
|||
|
|
def __repr__(self, _repr_running=None):
|
|||
|
|
'od.__repr__() <==> repr(od)'
|
|||
|
|
if not _repr_running: _repr_running = {}
|
|||
|
|
call_key = id(self), _get_ident()
|
|||
|
|
if call_key in _repr_running:
|
|||
|
|
return '...'
|
|||
|
|
_repr_running[call_key] = 1
|
|||
|
|
try:
|
|||
|
|
if not self:
|
|||
|
|
return '%s()' % (self.__class__.__name__,)
|
|||
|
|
return '%s(%r)' % (self.__class__.__name__, self.items())
|
|||
|
|
finally:
|
|||
|
|
del _repr_running[call_key]
|
|||
|
|
|
|||
|
|
def __reduce__(self):
|
|||
|
|
'Return state information for pickling'
|
|||
|
|
items = [[k, self[k]] for k in self]
|
|||
|
|
inst_dict = vars(self).copy()
|
|||
|
|
for k in vars(OrderedDict()):
|
|||
|
|
inst_dict.pop(k, None)
|
|||
|
|
if inst_dict:
|
|||
|
|
return (self.__class__, (items,), inst_dict)
|
|||
|
|
return self.__class__, (items,)
|
|||
|
|
|
|||
|
|
def copy(self):
|
|||
|
|
'od.copy() -> a shallow copy of od'
|
|||
|
|
return self.__class__(self)
|
|||
|
|
|
|||
|
|
@classmethod
|
|||
|
|
def fromkeys(cls, iterable, value=None):
|
|||
|
|
'''OD.fromkeys(S[, v]) -> New ordered dictionary with keys from S
|
|||
|
|
and values equal to v (which defaults to None).
|
|||
|
|
|
|||
|
|
'''
|
|||
|
|
d = cls()
|
|||
|
|
for key in iterable:
|
|||
|
|
d[key] = value
|
|||
|
|
return d
|
|||
|
|
|
|||
|
|
def __eq__(self, other):
|
|||
|
|
'''od.__eq__(y) <==> od==y. Comparison to another OD is order-sensitive
|
|||
|
|
while comparison to a regular mapping is order-insensitive.
|
|||
|
|
|
|||
|
|
'''
|
|||
|
|
if isinstance(other, OrderedDict):
|
|||
|
|
return len(self)==len(other) and self.items() == other.items()
|
|||
|
|
return dict.__eq__(self, other)
|
|||
|
|
|
|||
|
|
def __ne__(self, other):
|
|||
|
|
return not self == other
|
|||
|
|
|
|||
|
|
# -- the following methods are only used in Python 2.7 --
|
|||
|
|
|
|||
|
|
def viewkeys(self):
|
|||
|
|
"od.viewkeys() -> a set-like object providing a view on od's keys"
|
|||
|
|
return KeysView(self)
|
|||
|
|
|
|||
|
|
def viewvalues(self):
|
|||
|
|
"od.viewvalues() -> an object providing a view on od's values"
|
|||
|
|
return ValuesView(self)
|
|||
|
|
|
|||
|
|
def viewitems(self):
|
|||
|
|
"od.viewitems() -> a set-like object providing a view on od's items"
|
|||
|
|
return ItemsView(self)
|
|||
|
|
|
|||
|
|
try:
|
|||
|
|
from logging.config import BaseConfigurator, valid_ident
|
|||
|
|
except ImportError: # pragma: no cover
|
|||
|
|
IDENTIFIER = re.compile('^[a-z_][a-z0-9_]*$', re.I)
|
|||
|
|
|
|||
|
|
|
|||
|
|
def valid_ident(s):
|
|||
|
|
m = IDENTIFIER.match(s)
|
|||
|
|
if not m:
|
|||
|
|
raise ValueError('Not a valid Python identifier: %r' % s)
|
|||
|
|
return True
|
|||
|
|
|
|||
|
|
|
|||
|
|
# The ConvertingXXX classes are wrappers around standard Python containers,
|
|||
|
|
# and they serve to convert any suitable values in the container. The
|
|||
|
|
# conversion converts base dicts, lists and tuples to their wrapped
|
|||
|
|
# equivalents, whereas strings which match a conversion format are converted
|
|||
|
|
# appropriately.
|
|||
|
|
#
|
|||
|
|
# Each wrapper should have a configurator attribute holding the actual
|
|||
|
|
# configurator to use for conversion.
|
|||
|
|
|
|||
|
|
class ConvertingDict(dict):
|
|||
|
|
"""A converting dictionary wrapper."""
|
|||
|
|
|
|||
|
|
def __getitem__(self, key):
|
|||
|
|
value = dict.__getitem__(self, key)
|
|||
|
|
result = self.configurator.convert(value)
|
|||
|
|
#If the converted value is different, save for next time
|
|||
|
|
if value is not result:
|
|||
|
|
self[key] = result
|
|||
|
|
if type(result) in (ConvertingDict, ConvertingList,
|
|||
|
|
ConvertingTuple):
|
|||
|
|
result.parent = self
|
|||
|
|
result.key = key
|
|||
|
|
return result
|
|||
|
|
|
|||
|
|
def get(self, key, default=None):
|
|||
|
|
value = dict.get(self, key, default)
|
|||
|
|
result = self.configurator.convert(value)
|
|||
|
|
#If the converted value is different, save for next time
|
|||
|
|
if value is not result:
|
|||
|
|
self[key] = result
|
|||
|
|
if type(result) in (ConvertingDict, ConvertingList,
|
|||
|
|
ConvertingTuple):
|
|||
|
|
result.parent = self
|
|||
|
|
result.key = key
|
|||
|
|
return result
|
|||
|
|
|
|||
|
|
def pop(self, key, default=None):
|
|||
|
|
value = dict.pop(self, key, default)
|
|||
|
|
result = self.configurator.convert(value)
|
|||
|
|
if value is not result:
|
|||
|
|
if type(result) in (ConvertingDict, ConvertingList,
|
|||
|
|
ConvertingTuple):
|
|||
|
|
result.parent = self
|
|||
|
|
result.key = key
|
|||
|
|
return result
|
|||
|
|
|
|||
|
|
class ConvertingList(list):
|
|||
|
|
"""A converting list wrapper."""
|
|||
|
|
def __getitem__(self, key):
|
|||
|
|
value = list.__getitem__(self, key)
|
|||
|
|
result = self.configurator.convert(value)
|
|||
|
|
#If the converted value is different, save for next time
|
|||
|
|
if value is not result:
|
|||
|
|
self[key] = result
|
|||
|
|
if type(result) in (ConvertingDict, ConvertingList,
|
|||
|
|
ConvertingTuple):
|
|||
|
|
result.parent = self
|
|||
|
|
result.key = key
|
|||
|
|
return result
|
|||
|
|
|
|||
|
|
def pop(self, idx=-1):
|
|||
|
|
value = list.pop(self, idx)
|
|||
|
|
result = self.configurator.convert(value)
|
|||
|
|
if value is not result:
|
|||
|
|
if type(result) in (ConvertingDict, ConvertingList,
|
|||
|
|
ConvertingTuple):
|
|||
|
|
result.parent = self
|
|||
|
|
return result
|
|||
|
|
|
|||
|
|
class ConvertingTuple(tuple):
|
|||
|
|
"""A converting tuple wrapper."""
|
|||
|
|
def __getitem__(self, key):
|
|||
|
|
value = tuple.__getitem__(self, key)
|
|||
|
|
result = self.configurator.convert(value)
|
|||
|
|
if value is not result:
|
|||
|
|
if type(result) in (ConvertingDict, ConvertingList,
|
|||
|
|
ConvertingTuple):
|
|||
|
|
result.parent = self
|
|||
|
|
result.key = key
|
|||
|
|
return result
|
|||
|
|
|
|||
|
|
class BaseConfigurator(object):
|
|||
|
|
"""
|
|||
|
|
The configurator base class which defines some useful defaults.
|
|||
|
|
"""
|
|||
|
|
|
|||
|
|
CONVERT_PATTERN = re.compile(r'^(?P<prefix>[a-z]+)://(?P<suffix>.*)$')
|
|||
|
|
|
|||
|
|
WORD_PATTERN = re.compile(r'^\s*(\w+)\s*')
|
|||
|
|
DOT_PATTERN = re.compile(r'^\.\s*(\w+)\s*')
|
|||
|
|
INDEX_PATTERN = re.compile(r'^\[\s*(\w+)\s*\]\s*')
|
|||
|
|
DIGIT_PATTERN = re.compile(r'^\d+$')
|
|||
|
|
|
|||
|
|
value_converters = {
|
|||
|
|
'ext' : 'ext_convert',
|
|||
|
|
'cfg' : 'cfg_convert',
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
# We might want to use a different one, e.g. importlib
|
|||
|
|
importer = staticmethod(__import__)
|
|||
|
|
|
|||
|
|
def __init__(self, config):
|
|||
|
|
self.config = ConvertingDict(config)
|
|||
|
|
self.config.configurator = self
|
|||
|
|
|
|||
|
|
def resolve(self, s):
|
|||
|
|
"""
|
|||
|
|
Resolve strings to objects using standard import and attribute
|
|||
|
|
syntax.
|
|||
|
|
"""
|
|||
|
|
name = s.split('.')
|
|||
|
|
used = name.pop(0)
|
|||
|
|
try:
|
|||
|
|
found = self.importer(used)
|
|||
|
|
for frag in name:
|
|||
|
|
used += '.' + frag
|
|||
|
|
try:
|
|||
|
|
found = getattr(found, frag)
|
|||
|
|
except AttributeError:
|
|||
|
|
self.importer(used)
|
|||
|
|
found = getattr(found, frag)
|
|||
|
|
return found
|
|||
|
|
except ImportError:
|
|||
|
|
e, tb = sys.exc_info()[1:]
|
|||
|
|
v = ValueError('Cannot resolve %r: %s' % (s, e))
|
|||
|
|
v.__cause__, v.__traceback__ = e, tb
|
|||
|
|
raise v
|
|||
|
|
|
|||
|
|
def ext_convert(self, value):
|
|||
|
|
"""Default converter for the ext:// protocol."""
|
|||
|
|
return self.resolve(value)
|
|||
|
|
|
|||
|
|
def cfg_convert(self, value):
|
|||
|
|
"""Default converter for the cfg:// protocol."""
|
|||
|
|
rest = value
|
|||
|
|
m = self.WORD_PATTERN.match(rest)
|
|||
|
|
if m is None:
|
|||
|
|
raise ValueError("Unable to convert %r" % value)
|
|||
|
|
else:
|
|||
|
|
rest = rest[m.end():]
|
|||
|
|
d = self.config[m.groups()[0]]
|
|||
|
|
#print d, rest
|
|||
|
|
while rest:
|
|||
|
|
m = self.DOT_PATTERN.match(rest)
|
|||
|
|
if m:
|
|||
|
|
d = d[m.groups()[0]]
|
|||
|
|
else:
|
|||
|
|
m = self.INDEX_PATTERN.match(rest)
|
|||
|
|
if m:
|
|||
|
|
idx = m.groups()[0]
|
|||
|
|
if not self.DIGIT_PATTERN.match(idx):
|
|||
|
|
d = d[idx]
|
|||
|
|
else:
|
|||
|
|
try:
|
|||
|
|
n = int(idx) # try as number first (most likely)
|
|||
|
|
d = d[n]
|
|||
|
|
except TypeError:
|
|||
|
|
d = d[idx]
|
|||
|
|
if m:
|
|||
|
|
rest = rest[m.end():]
|
|||
|
|
else:
|
|||
|
|
raise ValueError('Unable to convert '
|
|||
|
|
'%r at %r' % (value, rest))
|
|||
|
|
#rest should be empty
|
|||
|
|
return d
|
|||
|
|
|
|||
|
|
def convert(self, value):
|
|||
|
|
"""
|
|||
|
|
Convert values to an appropriate type. dicts, lists and tuples are
|
|||
|
|
replaced by their converting alternatives. Strings are checked to
|
|||
|
|
see if they have a conversion format and are converted if they do.
|
|||
|
|
"""
|
|||
|
|
if not isinstance(value, ConvertingDict) and isinstance(value, dict):
|
|||
|
|
value = ConvertingDict(value)
|
|||
|
|
value.configurator = self
|
|||
|
|
elif not isinstance(value, ConvertingList) and isinstance(value, list):
|
|||
|
|
value = ConvertingList(value)
|
|||
|
|
value.configurator = self
|
|||
|
|
elif not isinstance(value, ConvertingTuple) and\
|
|||
|
|
isinstance(value, tuple):
|
|||
|
|
value = ConvertingTuple(value)
|
|||
|
|
value.configurator = self
|
|||
|
|
elif isinstance(value, string_types):
|
|||
|
|
m = self.CONVERT_PATTERN.match(value)
|
|||
|
|
if m:
|
|||
|
|
d = m.groupdict()
|
|||
|
|
prefix = d['prefix']
|
|||
|
|
converter = self.value_converters.get(prefix, None)
|
|||
|
|
if converter:
|
|||
|
|
suffix = d['suffix']
|
|||
|
|
converter = getattr(self, converter)
|
|||
|
|
value = converter(suffix)
|
|||
|
|
return value
|
|||
|
|
|
|||
|
|
def configure_custom(self, config):
|
|||
|
|
"""Configure an object with a user-supplied factory."""
|
|||
|
|
c = config.pop('()')
|
|||
|
|
if not callable(c):
|
|||
|
|
c = self.resolve(c)
|
|||
|
|
props = config.pop('.', None)
|
|||
|
|
# Check for valid identifiers
|
|||
|
|
kwargs = dict([(k, config[k]) for k in config if valid_ident(k)])
|
|||
|
|
result = c(**kwargs)
|
|||
|
|
if props:
|
|||
|
|
for name, value in props.items():
|
|||
|
|
setattr(result, name, value)
|
|||
|
|
return result
|
|||
|
|
|
|||
|
|
def as_tuple(self, value):
|
|||
|
|
"""Utility function which converts lists to tuples."""
|
|||
|
|
if isinstance(value, list):
|
|||
|
|
value = tuple(value)
|
|||
|
|
return value
|