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# -*- coding: utf-8 -*-
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#
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# Copyright (C) 2013-2017 Vinay Sajip.
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# Licensed to the Python Software Foundation under a contributor agreement.
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# See LICENSE.txt and CONTRIBUTORS.txt.
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#
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from __future__ import absolute_import
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import os
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import re
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import sys
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try:
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import ssl
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except ImportError: # pragma: no cover
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ssl = None
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if sys.version_info[0] < 3: # pragma: no cover
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from StringIO import StringIO
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string_types = basestring,
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text_type = unicode
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from types import FileType as file_type
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import __builtin__ as builtins
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import ConfigParser as configparser
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from ._backport import shutil
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from urlparse import urlparse, urlunparse, urljoin, urlsplit, urlunsplit
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from urllib import (urlretrieve, quote as _quote, unquote, url2pathname,
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pathname2url, ContentTooShortError, splittype)
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def quote(s):
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if isinstance(s, unicode):
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s = s.encode('utf-8')
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return _quote(s)
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import urllib2
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from urllib2 import (Request, urlopen, URLError, HTTPError,
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HTTPBasicAuthHandler, HTTPPasswordMgr,
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HTTPHandler, HTTPRedirectHandler,
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build_opener)
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if ssl:
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from urllib2 import HTTPSHandler
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import httplib
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import xmlrpclib
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import Queue as queue
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from HTMLParser import HTMLParser
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import htmlentitydefs
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raw_input = raw_input
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from itertools import ifilter as filter
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from itertools import ifilterfalse as filterfalse
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_userprog = None
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def splituser(host):
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"""splituser('user[:passwd]@host[:port]') --> 'user[:passwd]', 'host[:port]'."""
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global _userprog
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if _userprog is None:
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import re
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_userprog = re.compile('^(.*)@(.*)$')
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match = _userprog.match(host)
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if match: return match.group(1, 2)
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return None, host
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else: # pragma: no cover
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from io import StringIO
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string_types = str,
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text_type = str
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from io import TextIOWrapper as file_type
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import builtins
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import configparser
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import shutil
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from urllib.parse import (urlparse, urlunparse, urljoin, splituser, quote,
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unquote, urlsplit, urlunsplit, splittype)
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from urllib.request import (urlopen, urlretrieve, Request, url2pathname,
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pathname2url,
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HTTPBasicAuthHandler, HTTPPasswordMgr,
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HTTPHandler, HTTPRedirectHandler,
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build_opener)
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if ssl:
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from urllib.request import HTTPSHandler
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from urllib.error import HTTPError, URLError, ContentTooShortError
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import http.client as httplib
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import urllib.request as urllib2
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import xmlrpc.client as xmlrpclib
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import queue
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from html.parser import HTMLParser
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import html.entities as htmlentitydefs
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raw_input = input
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from itertools import filterfalse
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filter = filter
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try:
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from ssl import match_hostname, CertificateError
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except ImportError: # pragma: no cover
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class CertificateError(ValueError):
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pass
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def _dnsname_match(dn, hostname, max_wildcards=1):
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"""Matching according to RFC 6125, section 6.4.3
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http://tools.ietf.org/html/rfc6125#section-6.4.3
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"""
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pats = []
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if not dn:
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return False
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parts = dn.split('.')
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leftmost, remainder = parts[0], parts[1:]
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wildcards = leftmost.count('*')
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if wildcards > max_wildcards:
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# Issue #17980: avoid denials of service by refusing more
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# than one wildcard per fragment. A survey of established
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# policy among SSL implementations showed it to be a
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# reasonable choice.
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raise CertificateError(
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"too many wildcards in certificate DNS name: " + repr(dn))
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# speed up common case w/o wildcards
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if not wildcards:
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return dn.lower() == hostname.lower()
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# RFC 6125, section 6.4.3, subitem 1.
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# The client SHOULD NOT attempt to match a presented identifier in which
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# the wildcard character comprises a label other than the left-most label.
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if leftmost == '*':
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# When '*' is a fragment by itself, it matches a non-empty dotless
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# fragment.
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pats.append('[^.]+')
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elif leftmost.startswith('xn--') or hostname.startswith('xn--'):
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# RFC 6125, section 6.4.3, subitem 3.
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# The client SHOULD NOT attempt to match a presented identifier
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# where the wildcard character is embedded within an A-label or
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# U-label of an internationalized domain name.
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pats.append(re.escape(leftmost))
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else:
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# Otherwise, '*' matches any dotless string, e.g. www*
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pats.append(re.escape(leftmost).replace(r'\*', '[^.]*'))
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# add the remaining fragments, ignore any wildcards
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for frag in remainder:
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pats.append(re.escape(frag))
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pat = re.compile(r'\A' + r'\.'.join(pats) + r'\Z', re.IGNORECASE)
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return pat.match(hostname)
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def match_hostname(cert, hostname):
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"""Verify that *cert* (in decoded format as returned by
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SSLSocket.getpeercert()) matches the *hostname*. RFC 2818 and RFC 6125
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rules are followed, but IP addresses are not accepted for *hostname*.
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CertificateError is raised on failure. On success, the function
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returns nothing.
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"""
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if not cert:
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raise ValueError("empty or no certificate, match_hostname needs a "
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"SSL socket or SSL context with either "
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"CERT_OPTIONAL or CERT_REQUIRED")
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dnsnames = []
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san = cert.get('subjectAltName', ())
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for key, value in san:
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if key == 'DNS':
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if _dnsname_match(value, hostname):
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return
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dnsnames.append(value)
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if not dnsnames:
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# The subject is only checked when there is no dNSName entry
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# in subjectAltName
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for sub in cert.get('subject', ()):
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for key, value in sub:
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# XXX according to RFC 2818, the most specific Common Name
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# must be used.
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if key == 'commonName':
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if _dnsname_match(value, hostname):
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return
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dnsnames.append(value)
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if len(dnsnames) > 1:
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raise CertificateError("hostname %r "
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"doesn't match either of %s"
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% (hostname, ', '.join(map(repr, dnsnames))))
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elif len(dnsnames) == 1:
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raise CertificateError("hostname %r "
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"doesn't match %r"
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% (hostname, dnsnames[0]))
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else:
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raise CertificateError("no appropriate commonName or "
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"subjectAltName fields were found")
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try:
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from types import SimpleNamespace as Container
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except ImportError: # pragma: no cover
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class Container(object):
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"""
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A generic container for when multiple values need to be returned
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"""
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def __init__(self, **kwargs):
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self.__dict__.update(kwargs)
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try:
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from shutil import which
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except ImportError: # pragma: no cover
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# Implementation from Python 3.3
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def which(cmd, mode=os.F_OK | os.X_OK, path=None):
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"""Given a command, mode, and a PATH string, return the path which
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conforms to the given mode on the PATH, or None if there is no such
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file.
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`mode` defaults to os.F_OK | os.X_OK. `path` defaults to the result
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of os.environ.get("PATH"), or can be overridden with a custom search
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path.
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"""
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# Check that a given file can be accessed with the correct mode.
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# Additionally check that `file` is not a directory, as on Windows
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# directories pass the os.access check.
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def _access_check(fn, mode):
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return (os.path.exists(fn) and os.access(fn, mode)
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and not os.path.isdir(fn))
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# If we're given a path with a directory part, look it up directly rather
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# than referring to PATH directories. This includes checking relative to the
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# current directory, e.g. ./script
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if os.path.dirname(cmd):
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if _access_check(cmd, mode):
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return cmd
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return None
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if path is None:
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path = os.environ.get("PATH", os.defpath)
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if not path:
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return None
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path = path.split(os.pathsep)
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if sys.platform == "win32":
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# The current directory takes precedence on Windows.
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if not os.curdir in path:
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path.insert(0, os.curdir)
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# PATHEXT is necessary to check on Windows.
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pathext = os.environ.get("PATHEXT", "").split(os.pathsep)
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# See if the given file matches any of the expected path extensions.
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# This will allow us to short circuit when given "python.exe".
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# If it does match, only test that one, otherwise we have to try
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# others.
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if any(cmd.lower().endswith(ext.lower()) for ext in pathext):
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files = [cmd]
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else:
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files = [cmd + ext for ext in pathext]
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else:
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# On other platforms you don't have things like PATHEXT to tell you
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# what file suffixes are executable, so just pass on cmd as-is.
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files = [cmd]
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seen = set()
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for dir in path:
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normdir = os.path.normcase(dir)
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if not normdir in seen:
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seen.add(normdir)
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for thefile in files:
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name = os.path.join(dir, thefile)
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if _access_check(name, mode):
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return name
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return None
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# ZipFile is a context manager in 2.7, but not in 2.6
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from zipfile import ZipFile as BaseZipFile
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if hasattr(BaseZipFile, '__enter__'): # pragma: no cover
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ZipFile = BaseZipFile
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else: # pragma: no cover
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from zipfile import ZipExtFile as BaseZipExtFile
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class ZipExtFile(BaseZipExtFile):
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def __init__(self, base):
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self.__dict__.update(base.__dict__)
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def __enter__(self):
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return self
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def __exit__(self, *exc_info):
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self.close()
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# return None, so if an exception occurred, it will propagate
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class ZipFile(BaseZipFile):
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def __enter__(self):
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return self
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def __exit__(self, *exc_info):
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self.close()
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# return None, so if an exception occurred, it will propagate
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def open(self, *args, **kwargs):
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base = BaseZipFile.open(self, *args, **kwargs)
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return ZipExtFile(base)
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try:
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from platform import python_implementation
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except ImportError: # pragma: no cover
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def python_implementation():
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"""Return a string identifying the Python implementation."""
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if 'PyPy' in sys.version:
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return 'PyPy'
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if os.name == 'java':
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return 'Jython'
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if sys.version.startswith('IronPython'):
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return 'IronPython'
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return 'CPython'
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try:
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import sysconfig
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except ImportError: # pragma: no cover
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from ._backport import sysconfig
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try:
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callable = callable
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except NameError: # pragma: no cover
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from collections.abc import Callable
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def callable(obj):
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return isinstance(obj, Callable)
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try:
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fsencode = os.fsencode
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fsdecode = os.fsdecode
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except AttributeError: # pragma: no cover
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# Issue #99: on some systems (e.g. containerised),
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# sys.getfilesystemencoding() returns None, and we need a real value,
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# so fall back to utf-8. From the CPython 2.7 docs relating to Unix and
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# sys.getfilesystemencoding(): the return value is "the user’s preference
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# according to the result of nl_langinfo(CODESET), or None if the
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# nl_langinfo(CODESET) failed."
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_fsencoding = sys.getfilesystemencoding() or 'utf-8'
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if _fsencoding == 'mbcs':
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_fserrors = 'strict'
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else:
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_fserrors = 'surrogateescape'
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def fsencode(filename):
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if isinstance(filename, bytes):
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return filename
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elif isinstance(filename, text_type):
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return filename.encode(_fsencoding, _fserrors)
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else:
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raise TypeError("expect bytes or str, not %s" %
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type(filename).__name__)
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def fsdecode(filename):
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if isinstance(filename, text_type):
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return filename
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elif isinstance(filename, bytes):
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return filename.decode(_fsencoding, _fserrors)
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else:
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raise TypeError("expect bytes or str, not %s" %
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type(filename).__name__)
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try:
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from tokenize import detect_encoding
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except ImportError: # pragma: no cover
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from codecs import BOM_UTF8, lookup
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import re
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cookie_re = re.compile(r"coding[:=]\s*([-\w.]+)")
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def _get_normal_name(orig_enc):
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"""Imitates get_normal_name in tokenizer.c."""
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# Only care about the first 12 characters.
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enc = orig_enc[:12].lower().replace("_", "-")
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if enc == "utf-8" or enc.startswith("utf-8-"):
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return "utf-8"
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|
if enc in ("latin-1", "iso-8859-1", "iso-latin-1") or \
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enc.startswith(("latin-1-", "iso-8859-1-", "iso-latin-1-")):
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return "iso-8859-1"
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return orig_enc
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|
|
|
def detect_encoding(readline):
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"""
|
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|
The detect_encoding() function is used to detect the encoding that should
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be used to decode a Python source file. It requires one argument, readline,
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in the same way as the tokenize() generator.
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It will call readline a maximum of twice, and return the encoding used
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(as a string) and a list of any lines (left as bytes) it has read in.
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It detects the encoding from the presence of a utf-8 bom or an encoding
|
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|
cookie as specified in pep-0263. If both a bom and a cookie are present,
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but disagree, a SyntaxError will be raised. If the encoding cookie is an
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invalid charset, raise a SyntaxError. Note that if a utf-8 bom is found,
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'utf-8-sig' is returned.
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If no encoding is specified, then the default of 'utf-8' will be returned.
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"""
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try:
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filename = readline.__self__.name
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except AttributeError:
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filename = None
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bom_found = False
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encoding = None
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default = 'utf-8'
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def read_or_stop():
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try:
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return readline()
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except StopIteration:
|
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return b''
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|
|
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|
def find_cookie(line):
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try:
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|
# Decode as UTF-8. Either the line is an encoding declaration,
|
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|
# in which case it should be pure ASCII, or it must be UTF-8
|
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|
# per default encoding.
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|
line_string = line.decode('utf-8')
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|
except UnicodeDecodeError:
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|
msg = "invalid or missing encoding declaration"
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|
if filename is not None:
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|
msg = '{} for {!r}'.format(msg, filename)
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|
raise SyntaxError(msg)
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|
|
|
|
|
matches = cookie_re.findall(line_string)
|
|
|
if not matches:
|
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|
return None
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|
|
encoding = _get_normal_name(matches[0])
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|
|
try:
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|
codec = lookup(encoding)
|
|
|
except LookupError:
|
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|
# This behaviour mimics the Python interpreter
|
|
|
if filename is None:
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|
msg = "unknown encoding: " + encoding
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|
|
else:
|
|
|
msg = "unknown encoding for {!r}: {}".format(filename,
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|
encoding)
|
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|
raise SyntaxError(msg)
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|
|
|
|
|
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
|
|
|
try:
|
|
|
from imp import cache_from_source
|
|
|
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
|
