mirror of
https://github.com/morpheus65535/bazarr
synced 2024-12-30 19:46:25 +00:00
1340 lines
52 KiB
Python
1340 lines
52 KiB
Python
#!/usr/bin/env python
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# -*- coding: utf-8 -*-
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"""Configuration file parser.
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A configuration file consists of sections, lead by a "[section]" header,
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and followed by "name: value" entries, with continuations and such in
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the style of RFC 822.
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Intrinsic defaults can be specified by passing them into the
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ConfigParser constructor as a dictionary.
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class:
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ConfigParser -- responsible for parsing a list of
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configuration files, and managing the parsed database.
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methods:
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__init__(defaults=None, dict_type=_default_dict, allow_no_value=False,
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delimiters=('=', ':'), comment_prefixes=('#', ';'),
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inline_comment_prefixes=None, strict=True,
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empty_lines_in_values=True):
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Create the parser. When `defaults' is given, it is initialized into the
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dictionary or intrinsic defaults. The keys must be strings, the values
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must be appropriate for %()s string interpolation.
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When `dict_type' is given, it will be used to create the dictionary
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objects for the list of sections, for the options within a section, and
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for the default values.
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When `delimiters' is given, it will be used as the set of substrings
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that divide keys from values.
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When `comment_prefixes' is given, it will be used as the set of
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substrings that prefix comments in empty lines. Comments can be
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indented.
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When `inline_comment_prefixes' is given, it will be used as the set of
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substrings that prefix comments in non-empty lines.
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When `strict` is True, the parser won't allow for any section or option
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duplicates while reading from a single source (file, string or
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dictionary). Default is True.
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When `empty_lines_in_values' is False (default: True), each empty line
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marks the end of an option. Otherwise, internal empty lines of
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a multiline option are kept as part of the value.
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When `allow_no_value' is True (default: False), options without
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values are accepted; the value presented for these is None.
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sections()
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Return all the configuration section names, sans DEFAULT.
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has_section(section)
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Return whether the given section exists.
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has_option(section, option)
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Return whether the given option exists in the given section.
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options(section)
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Return list of configuration options for the named section.
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read(filenames, encoding=None)
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Read and parse the list of named configuration files, given by
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name. A single filename is also allowed. Non-existing files
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are ignored. Return list of successfully read files.
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read_file(f, filename=None)
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Read and parse one configuration file, given as a file object.
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The filename defaults to f.name; it is only used in error
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messages (if f has no `name' attribute, the string `<???>' is used).
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read_string(string)
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Read configuration from a given string.
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read_dict(dictionary)
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Read configuration from a dictionary. Keys are section names,
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values are dictionaries with keys and values that should be present
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in the section. If the used dictionary type preserves order, sections
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and their keys will be added in order. Values are automatically
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converted to strings.
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get(section, option, raw=False, vars=None, fallback=_UNSET)
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Return a string value for the named option. All % interpolations are
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expanded in the return values, based on the defaults passed into the
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constructor and the DEFAULT section. Additional substitutions may be
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provided using the `vars' argument, which must be a dictionary whose
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contents override any pre-existing defaults. If `option' is a key in
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`vars', the value from `vars' is used.
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getint(section, options, raw=False, vars=None, fallback=_UNSET)
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Like get(), but convert value to an integer.
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getfloat(section, options, raw=False, vars=None, fallback=_UNSET)
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Like get(), but convert value to a float.
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getboolean(section, options, raw=False, vars=None, fallback=_UNSET)
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Like get(), but convert value to a boolean (currently case
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insensitively defined as 0, false, no, off for False, and 1, true,
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yes, on for True). Returns False or True.
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items(section=_UNSET, raw=False, vars=None)
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If section is given, return a list of tuples with (name, value) for
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each option in the section. Otherwise, return a list of tuples with
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(section_name, section_proxy) for each section, including DEFAULTSECT.
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remove_section(section)
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Remove the given file section and all its options.
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remove_option(section, option)
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Remove the given option from the given section.
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set(section, option, value)
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Set the given option.
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write(fp, space_around_delimiters=True)
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Write the configuration state in .ini format. If
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`space_around_delimiters' is True (the default), delimiters
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between keys and values are surrounded by spaces.
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"""
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from __future__ import absolute_import
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from __future__ import division
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from __future__ import print_function
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from __future__ import unicode_literals
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from collections import MutableMapping
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import functools
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import io
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import itertools
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import re
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import sys
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import warnings
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from backports.configparser2.helpers import OrderedDict as _default_dict
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from backports.configparser2.helpers import ChainMap as _ChainMap
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from backports.configparser2.helpers import from_none, open, str, PY2
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__all__ = ["NoSectionError", "DuplicateOptionError", "DuplicateSectionError",
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"NoOptionError", "InterpolationError", "InterpolationDepthError",
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"InterpolationSyntaxError", "ParsingError",
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"MissingSectionHeaderError",
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"ConfigParser", "SafeConfigParser", "RawConfigParser",
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"DEFAULTSECT", "MAX_INTERPOLATION_DEPTH"]
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DEFAULTSECT = "DEFAULT"
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MAX_INTERPOLATION_DEPTH = 10
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# exception classes
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class Error(Exception):
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"""Base class for ConfigParser exceptions."""
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def __init__(self, msg=''):
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self.message = msg
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Exception.__init__(self, msg)
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def __repr__(self):
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return self.message
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__str__ = __repr__
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class NoSectionError(Error):
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"""Raised when no section matches a requested option."""
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def __init__(self, section):
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Error.__init__(self, 'No section: %r' % (section,))
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self.section = section
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self.args = (section, )
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class DuplicateSectionError(Error):
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"""Raised when a section is repeated in an input source.
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Possible repetitions that raise this exception are: multiple creation
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using the API or in strict parsers when a section is found more than once
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in a single input file, string or dictionary.
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"""
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def __init__(self, section, source=None, lineno=None):
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msg = [repr(section), " already exists"]
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if source is not None:
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message = ["While reading from ", repr(source)]
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if lineno is not None:
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message.append(" [line {0:2d}]".format(lineno))
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message.append(": section ")
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message.extend(msg)
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msg = message
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else:
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msg.insert(0, "Section ")
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Error.__init__(self, "".join(msg))
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self.section = section
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self.source = source
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self.lineno = lineno
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self.args = (section, source, lineno)
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class DuplicateOptionError(Error):
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"""Raised by strict parsers when an option is repeated in an input source.
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Current implementation raises this exception only when an option is found
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more than once in a single file, string or dictionary.
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"""
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def __init__(self, section, option, source=None, lineno=None):
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msg = [repr(option), " in section ", repr(section),
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" already exists"]
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if source is not None:
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message = ["While reading from ", repr(source)]
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if lineno is not None:
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message.append(" [line {0:2d}]".format(lineno))
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message.append(": option ")
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message.extend(msg)
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msg = message
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else:
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msg.insert(0, "Option ")
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Error.__init__(self, "".join(msg))
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self.section = section
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self.option = option
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self.source = source
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self.lineno = lineno
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self.args = (section, option, source, lineno)
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class NoOptionError(Error):
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"""A requested option was not found."""
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def __init__(self, option, section):
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Error.__init__(self, "No option %r in section: %r" %
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(option, section))
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self.option = option
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self.section = section
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self.args = (option, section)
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class InterpolationError(Error):
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"""Base class for interpolation-related exceptions."""
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def __init__(self, option, section, msg):
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Error.__init__(self, msg)
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self.option = option
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self.section = section
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self.args = (option, section, msg)
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class InterpolationMissingOptionError(InterpolationError):
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"""A string substitution required a setting which was not available."""
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def __init__(self, option, section, rawval, reference):
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msg = ("Bad value substitution:\n"
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"\tsection: [%s]\n"
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"\toption : %s\n"
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"\tkey : %s\n"
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"\trawval : %s\n"
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% (section, option, reference, rawval))
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InterpolationError.__init__(self, option, section, msg)
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self.reference = reference
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self.args = (option, section, rawval, reference)
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class InterpolationSyntaxError(InterpolationError):
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"""Raised when the source text contains invalid syntax.
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Current implementation raises this exception when the source text into
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which substitutions are made does not conform to the required syntax.
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"""
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class InterpolationDepthError(InterpolationError):
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"""Raised when substitutions are nested too deeply."""
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def __init__(self, option, section, rawval):
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msg = ("Value interpolation too deeply recursive:\n"
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"\tsection: [%s]\n"
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"\toption : %s\n"
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"\trawval : %s\n"
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% (section, option, rawval))
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InterpolationError.__init__(self, option, section, msg)
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self.args = (option, section, rawval)
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class ParsingError(Error):
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"""Raised when a configuration file does not follow legal syntax."""
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def __init__(self, source=None, filename=None):
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# Exactly one of `source'/`filename' arguments has to be given.
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# `filename' kept for compatibility.
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if filename and source:
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raise ValueError("Cannot specify both `filename' and `source'. "
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"Use `source'.")
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elif not filename and not source:
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raise ValueError("Required argument `source' not given.")
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elif filename:
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source = filename
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Error.__init__(self, 'Source contains parsing errors: %r' % source)
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self.source = source
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self.errors = []
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self.args = (source, )
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@property
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def filename(self):
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"""Deprecated, use `source'."""
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warnings.warn(
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"The 'filename' attribute will be removed in future versions. "
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"Use 'source' instead.",
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DeprecationWarning, stacklevel=2
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)
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return self.source
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@filename.setter
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def filename(self, value):
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"""Deprecated, user `source'."""
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warnings.warn(
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"The 'filename' attribute will be removed in future versions. "
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"Use 'source' instead.",
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DeprecationWarning, stacklevel=2
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)
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self.source = value
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def append(self, lineno, line):
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self.errors.append((lineno, line))
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self.message += '\n\t[line %2d]: %s' % (lineno, line)
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class MissingSectionHeaderError(ParsingError):
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"""Raised when a key-value pair is found before any section header."""
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def __init__(self, filename, lineno, line):
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Error.__init__(
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self,
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'File contains no section headers.\nfile: %r, line: %d\n%r' %
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(filename, lineno, line))
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self.source = filename
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self.lineno = lineno
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self.line = line
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self.args = (filename, lineno, line)
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# Used in parser getters to indicate the default behaviour when a specific
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# option is not found it to raise an exception. Created to enable `None' as
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# a valid fallback value.
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_UNSET = object()
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class Interpolation(object):
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"""Dummy interpolation that passes the value through with no changes."""
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def before_get(self, parser, section, option, value, defaults):
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return value
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def before_set(self, parser, section, option, value):
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return value
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def before_read(self, parser, section, option, value):
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return value
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def before_write(self, parser, section, option, value):
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return value
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class BasicInterpolation(Interpolation):
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"""Interpolation as implemented in the classic ConfigParser.
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The option values can contain format strings which refer to other values in
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the same section, or values in the special default section.
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For example:
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something: %(dir)s/whatever
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would resolve the "%(dir)s" to the value of dir. All reference
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expansions are done late, on demand. If a user needs to use a bare % in
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a configuration file, she can escape it by writing %%. Other other % usage
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is considered a user error and raises `InterpolationSyntaxError'."""
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_KEYCRE = re.compile(r"%\(([^)]+)\)s")
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def before_get(self, parser, section, option, value, defaults):
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L = []
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self._interpolate_some(parser, option, L, value, section, defaults, 1)
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return ''.join(L)
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def before_set(self, parser, section, option, value):
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tmp_value = value.replace('%%', '') # escaped percent signs
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tmp_value = self._KEYCRE.sub('', tmp_value) # valid syntax
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if '%' in tmp_value:
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raise ValueError("invalid interpolation syntax in %r at "
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"position %d" % (value, tmp_value.find('%')))
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return value
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def _interpolate_some(self, parser, option, accum, rest, section, map,
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depth):
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if depth > MAX_INTERPOLATION_DEPTH:
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raise InterpolationDepthError(option, section, rest)
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while rest:
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p = rest.find("%")
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if p < 0:
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accum.append(rest)
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return
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if p > 0:
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accum.append(rest[:p])
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rest = rest[p:]
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# p is no longer used
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c = rest[1:2]
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if c == "%":
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accum.append("%")
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rest = rest[2:]
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elif c == "(":
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m = self._KEYCRE.match(rest)
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if m is None:
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raise InterpolationSyntaxError(option, section,
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"bad interpolation variable reference %r" % rest)
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var = parser.optionxform(m.group(1))
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rest = rest[m.end():]
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try:
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v = map[var]
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except KeyError:
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raise from_none(InterpolationMissingOptionError(
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option, section, rest, var))
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if "%" in v:
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self._interpolate_some(parser, option, accum, v,
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section, map, depth + 1)
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else:
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accum.append(v)
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else:
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raise InterpolationSyntaxError(
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option, section,
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"'%%' must be followed by '%%' or '(', "
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"found: %r" % (rest,))
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class ExtendedInterpolation(Interpolation):
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"""Advanced variant of interpolation, supports the syntax used by
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`zc.buildout'. Enables interpolation between sections."""
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_KEYCRE = re.compile(r"\$\{([^}]+)\}")
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def before_get(self, parser, section, option, value, defaults):
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L = []
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self._interpolate_some(parser, option, L, value, section, defaults, 1)
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return ''.join(L)
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def before_set(self, parser, section, option, value):
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tmp_value = value.replace('$$', '') # escaped dollar signs
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tmp_value = self._KEYCRE.sub('', tmp_value) # valid syntax
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if '$' in tmp_value:
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raise ValueError("invalid interpolation syntax in %r at "
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"position %d" % (value, tmp_value.find('$')))
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return value
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def _interpolate_some(self, parser, option, accum, rest, section, map,
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depth):
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if depth > MAX_INTERPOLATION_DEPTH:
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raise InterpolationDepthError(option, section, rest)
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while rest:
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p = rest.find("$")
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if p < 0:
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accum.append(rest)
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return
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if p > 0:
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accum.append(rest[:p])
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rest = rest[p:]
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# p is no longer used
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c = rest[1:2]
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if c == "$":
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accum.append("$")
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rest = rest[2:]
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elif c == "{":
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m = self._KEYCRE.match(rest)
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if m is None:
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raise InterpolationSyntaxError(option, section,
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"bad interpolation variable reference %r" % rest)
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path = m.group(1).split(':')
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rest = rest[m.end():]
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sect = section
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opt = option
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try:
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if len(path) == 1:
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opt = parser.optionxform(path[0])
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v = map[opt]
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elif len(path) == 2:
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sect = path[0]
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opt = parser.optionxform(path[1])
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v = parser.get(sect, opt, raw=True)
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else:
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raise InterpolationSyntaxError(
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option, section,
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"More than one ':' found: %r" % (rest,))
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except (KeyError, NoSectionError, NoOptionError):
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raise from_none(InterpolationMissingOptionError(
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option, section, rest, ":".join(path)))
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if "$" in v:
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self._interpolate_some(parser, opt, accum, v, sect,
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dict(parser.items(sect, raw=True)),
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depth + 1)
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else:
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accum.append(v)
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else:
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raise InterpolationSyntaxError(
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option, section,
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"'$' must be followed by '$' or '{', "
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"found: %r" % (rest,))
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class LegacyInterpolation(Interpolation):
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"""Deprecated interpolation used in old versions of ConfigParser.
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Use BasicInterpolation or ExtendedInterpolation instead."""
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_KEYCRE = re.compile(r"%\(([^)]*)\)s|.")
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def before_get(self, parser, section, option, value, vars):
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rawval = value
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depth = MAX_INTERPOLATION_DEPTH
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while depth: # Loop through this until it's done
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depth -= 1
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if value and "%(" in value:
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replace = functools.partial(self._interpolation_replace,
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parser=parser)
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value = self._KEYCRE.sub(replace, value)
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try:
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value = value % vars
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except KeyError as e:
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raise from_none(InterpolationMissingOptionError(
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|
option, section, rawval, e.args[0]))
|
|
else:
|
|
break
|
|
if value and "%(" in value:
|
|
raise InterpolationDepthError(option, section, rawval)
|
|
return value
|
|
|
|
def before_set(self, parser, section, option, value):
|
|
return value
|
|
|
|
@staticmethod
|
|
def _interpolation_replace(match, parser):
|
|
s = match.group(1)
|
|
if s is None:
|
|
return match.group()
|
|
else:
|
|
return "%%(%s)s" % parser.optionxform(s)
|
|
|
|
|
|
class RawConfigParser(MutableMapping):
|
|
"""ConfigParser that does not do interpolation."""
|
|
|
|
# Regular expressions for parsing section headers and options
|
|
_SECT_TMPL = r"""
|
|
\[ # [
|
|
(?P<header>[^]]+) # very permissive!
|
|
\] # ]
|
|
"""
|
|
_OPT_TMPL = r"""
|
|
(?P<option>.*?) # very permissive!
|
|
\s*(?P<vi>{delim})\s* # any number of space/tab,
|
|
# followed by any of the
|
|
# allowed delimiters,
|
|
# followed by any space/tab
|
|
(?P<value>.*)$ # everything up to eol
|
|
"""
|
|
_OPT_NV_TMPL = r"""
|
|
(?P<option>.*?) # very permissive!
|
|
\s*(?: # any number of space/tab,
|
|
(?P<vi>{delim})\s* # optionally followed by
|
|
# any of the allowed
|
|
# delimiters, followed by any
|
|
# space/tab
|
|
(?P<value>.*))?$ # everything up to eol
|
|
"""
|
|
# Interpolation algorithm to be used if the user does not specify another
|
|
_DEFAULT_INTERPOLATION = Interpolation()
|
|
# Compiled regular expression for matching sections
|
|
SECTCRE = re.compile(_SECT_TMPL, re.VERBOSE)
|
|
# Compiled regular expression for matching options with typical separators
|
|
OPTCRE = re.compile(_OPT_TMPL.format(delim="=|:"), re.VERBOSE)
|
|
# Compiled regular expression for matching options with optional values
|
|
# delimited using typical separators
|
|
OPTCRE_NV = re.compile(_OPT_NV_TMPL.format(delim="=|:"), re.VERBOSE)
|
|
# Compiled regular expression for matching leading whitespace in a line
|
|
NONSPACECRE = re.compile(r"\S")
|
|
# Possible boolean values in the configuration.
|
|
BOOLEAN_STATES = {'1': True, 'yes': True, 'true': True, 'on': True,
|
|
'0': False, 'no': False, 'false': False, 'off': False}
|
|
|
|
def __init__(self, defaults=None, dict_type=_default_dict,
|
|
allow_no_value=False, **kwargs):
|
|
|
|
# keyword-only arguments
|
|
delimiters = kwargs.get('delimiters', ('=', ':'))
|
|
comment_prefixes = kwargs.get('comment_prefixes', ('#', ';'))
|
|
inline_comment_prefixes = kwargs.get('inline_comment_prefixes', None)
|
|
strict = kwargs.get('strict', True)
|
|
empty_lines_in_values = kwargs.get('empty_lines_in_values', True)
|
|
default_section = kwargs.get('default_section', DEFAULTSECT)
|
|
interpolation = kwargs.get('interpolation', _UNSET)
|
|
|
|
self._dict = dict_type
|
|
self._sections = self._dict()
|
|
self._defaults = self._dict()
|
|
self._proxies = self._dict()
|
|
self._proxies[default_section] = SectionProxy(self, default_section)
|
|
if defaults:
|
|
for key, value in defaults.items():
|
|
self._defaults[self.optionxform(key)] = value
|
|
self._delimiters = tuple(delimiters)
|
|
if delimiters == ('=', ':'):
|
|
self._optcre = self.OPTCRE_NV if allow_no_value else self.OPTCRE
|
|
else:
|
|
d = "|".join(re.escape(d) for d in delimiters)
|
|
if allow_no_value:
|
|
self._optcre = re.compile(self._OPT_NV_TMPL.format(delim=d),
|
|
re.VERBOSE)
|
|
else:
|
|
self._optcre = re.compile(self._OPT_TMPL.format(delim=d),
|
|
re.VERBOSE)
|
|
self._comment_prefixes = tuple(comment_prefixes or ())
|
|
self._inline_comment_prefixes = tuple(inline_comment_prefixes or ())
|
|
self._strict = strict
|
|
self._allow_no_value = allow_no_value
|
|
self._empty_lines_in_values = empty_lines_in_values
|
|
self.default_section=default_section
|
|
self._interpolation = interpolation
|
|
if self._interpolation is _UNSET:
|
|
self._interpolation = self._DEFAULT_INTERPOLATION
|
|
if self._interpolation is None:
|
|
self._interpolation = Interpolation()
|
|
|
|
def defaults(self):
|
|
return self._defaults
|
|
|
|
def sections(self):
|
|
"""Return a list of section names, excluding [DEFAULT]"""
|
|
# self._sections will never have [DEFAULT] in it
|
|
return list(self._sections.keys())
|
|
|
|
def add_section(self, section):
|
|
"""Create a new section in the configuration.
|
|
|
|
Raise DuplicateSectionError if a section by the specified name
|
|
already exists. Raise ValueError if name is DEFAULT.
|
|
"""
|
|
if section == self.default_section:
|
|
raise ValueError('Invalid section name: %r' % section)
|
|
|
|
if section in self._sections:
|
|
raise DuplicateSectionError(section)
|
|
self._sections[section] = self._dict()
|
|
self._proxies[section] = SectionProxy(self, section)
|
|
|
|
def has_section(self, section):
|
|
"""Indicate whether the named section is present in the configuration.
|
|
|
|
The DEFAULT section is not acknowledged.
|
|
"""
|
|
return section in self._sections
|
|
|
|
def options(self, section):
|
|
"""Return a list of option names for the given section name."""
|
|
try:
|
|
opts = self._sections[section].copy()
|
|
except KeyError:
|
|
raise from_none(NoSectionError(section))
|
|
opts.update(self._defaults)
|
|
return list(opts.keys())
|
|
|
|
def read(self, filenames, encoding=None):
|
|
"""Read and parse a filename or a list of filenames.
|
|
|
|
Files that cannot be opened are silently ignored; this is
|
|
designed so that you can specify a list of potential
|
|
configuration file locations (e.g. current directory, user's
|
|
home directory, systemwide directory), and all existing
|
|
configuration files in the list will be read. A single
|
|
filename may also be given.
|
|
|
|
Return list of successfully read files.
|
|
"""
|
|
if PY2 and isinstance(filenames, bytes):
|
|
# we allow for a little unholy magic for Python 2 so that
|
|
# people not using unicode_literals can still use the library
|
|
# conveniently
|
|
warnings.warn(
|
|
"You passed a bytestring as `filenames`. This will not work"
|
|
" on Python 3. Use `cp.read_file()` or switch to using Unicode"
|
|
" strings across the board.",
|
|
DeprecationWarning,
|
|
stacklevel=2,
|
|
)
|
|
filenames = [filenames]
|
|
elif isinstance(filenames, str):
|
|
filenames = [filenames]
|
|
read_ok = []
|
|
for filename in filenames:
|
|
try:
|
|
with open(filename, encoding=encoding) as fp:
|
|
self._read(fp, filename)
|
|
except IOError:
|
|
continue
|
|
read_ok.append(filename)
|
|
return read_ok
|
|
|
|
def read_file(self, f, source=None):
|
|
"""Like read() but the argument must be a file-like object.
|
|
|
|
The `f' argument must be iterable, returning one line at a time.
|
|
Optional second argument is the `source' specifying the name of the
|
|
file being read. If not given, it is taken from f.name. If `f' has no
|
|
`name' attribute, `<???>' is used.
|
|
"""
|
|
if source is None:
|
|
try:
|
|
source = f.name
|
|
except AttributeError:
|
|
source = '<???>'
|
|
self._read(f, source)
|
|
|
|
def read_string(self, string, source='<string>'):
|
|
"""Read configuration from a given string."""
|
|
sfile = io.StringIO(string)
|
|
self.read_file(sfile, source)
|
|
|
|
def read_dict(self, dictionary, source='<dict>'):
|
|
"""Read configuration from a dictionary.
|
|
|
|
Keys are section names, values are dictionaries with keys and values
|
|
that should be present in the section. If the used dictionary type
|
|
preserves order, sections and their keys will be added in order.
|
|
|
|
All types held in the dictionary are converted to strings during
|
|
reading, including section names, option names and keys.
|
|
|
|
Optional second argument is the `source' specifying the name of the
|
|
dictionary being read.
|
|
"""
|
|
elements_added = set()
|
|
for section, keys in dictionary.items():
|
|
section = str(section)
|
|
try:
|
|
self.add_section(section)
|
|
except (DuplicateSectionError, ValueError):
|
|
if self._strict and section in elements_added:
|
|
raise
|
|
elements_added.add(section)
|
|
for key, value in keys.items():
|
|
key = self.optionxform(str(key))
|
|
if value is not None:
|
|
value = str(value)
|
|
if self._strict and (section, key) in elements_added:
|
|
raise DuplicateOptionError(section, key, source)
|
|
elements_added.add((section, key))
|
|
self.set(section, key, value)
|
|
|
|
def readfp(self, fp, filename=None):
|
|
"""Deprecated, use read_file instead."""
|
|
warnings.warn(
|
|
"This method will be removed in future versions. "
|
|
"Use 'parser.read_file()' instead.",
|
|
DeprecationWarning, stacklevel=2
|
|
)
|
|
self.read_file(fp, source=filename)
|
|
|
|
def get(self, section, option, **kwargs):
|
|
"""Get an option value for a given section.
|
|
|
|
If `vars' is provided, it must be a dictionary. The option is looked up
|
|
in `vars' (if provided), `section', and in `DEFAULTSECT' in that order.
|
|
If the key is not found and `fallback' is provided, it is used as
|
|
a fallback value. `None' can be provided as a `fallback' value.
|
|
|
|
If interpolation is enabled and the optional argument `raw' is False,
|
|
all interpolations are expanded in the return values.
|
|
|
|
Arguments `raw', `vars', and `fallback' are keyword only.
|
|
|
|
The section DEFAULT is special.
|
|
"""
|
|
# keyword-only arguments
|
|
raw = kwargs.get('raw', False)
|
|
vars = kwargs.get('vars', None)
|
|
fallback = kwargs.get('fallback', _UNSET)
|
|
|
|
try:
|
|
d = self._unify_values(section, vars)
|
|
except NoSectionError:
|
|
if fallback is _UNSET:
|
|
raise
|
|
else:
|
|
return fallback
|
|
option = self.optionxform(option)
|
|
try:
|
|
value = d[option]
|
|
except KeyError:
|
|
if fallback is _UNSET:
|
|
raise NoOptionError(option, section)
|
|
else:
|
|
return fallback
|
|
|
|
if raw or value is None:
|
|
return value
|
|
else:
|
|
return self._interpolation.before_get(self, section, option, value,
|
|
d)
|
|
|
|
def _get(self, section, conv, option, **kwargs):
|
|
return conv(self.get(section, option, **kwargs))
|
|
|
|
def getint(self, section, option, **kwargs):
|
|
# keyword-only arguments
|
|
raw = kwargs.get('raw', False)
|
|
vars = kwargs.get('vars', None)
|
|
fallback = kwargs.get('fallback', _UNSET)
|
|
|
|
try:
|
|
return self._get(section, int, option, raw=raw, vars=vars)
|
|
except (NoSectionError, NoOptionError):
|
|
if fallback is _UNSET:
|
|
raise
|
|
else:
|
|
return fallback
|
|
|
|
def getfloat(self, section, option, **kwargs):
|
|
# keyword-only arguments
|
|
raw = kwargs.get('raw', False)
|
|
vars = kwargs.get('vars', None)
|
|
fallback = kwargs.get('fallback', _UNSET)
|
|
|
|
try:
|
|
return self._get(section, float, option, raw=raw, vars=vars)
|
|
except (NoSectionError, NoOptionError):
|
|
if fallback is _UNSET:
|
|
raise
|
|
else:
|
|
return fallback
|
|
|
|
def getboolean(self, section, option, **kwargs):
|
|
# keyword-only arguments
|
|
raw = kwargs.get('raw', False)
|
|
vars = kwargs.get('vars', None)
|
|
fallback = kwargs.get('fallback', _UNSET)
|
|
|
|
try:
|
|
return self._get(section, self._convert_to_boolean, option,
|
|
raw=raw, vars=vars)
|
|
except (NoSectionError, NoOptionError):
|
|
if fallback is _UNSET:
|
|
raise
|
|
else:
|
|
return fallback
|
|
|
|
def items(self, section=_UNSET, raw=False, vars=None):
|
|
"""Return a list of (name, value) tuples for each option in a section.
|
|
|
|
All % interpolations are expanded in the return values, based on the
|
|
defaults passed into the constructor, unless the optional argument
|
|
`raw' is true. Additional substitutions may be provided using the
|
|
`vars' argument, which must be a dictionary whose contents overrides
|
|
any pre-existing defaults.
|
|
|
|
The section DEFAULT is special.
|
|
"""
|
|
if section is _UNSET:
|
|
return super(RawConfigParser, self).items()
|
|
d = self._defaults.copy()
|
|
try:
|
|
d.update(self._sections[section])
|
|
except KeyError:
|
|
if section != self.default_section:
|
|
raise NoSectionError(section)
|
|
# Update with the entry specific variables
|
|
if vars:
|
|
for key, value in vars.items():
|
|
d[self.optionxform(key)] = value
|
|
value_getter = lambda option: self._interpolation.before_get(self,
|
|
section, option, d[option], d)
|
|
if raw:
|
|
value_getter = lambda option: d[option]
|
|
return [(option, value_getter(option)) for option in d.keys()]
|
|
|
|
def popitem(self):
|
|
"""Remove a section from the parser and return it as
|
|
a (section_name, section_proxy) tuple. If no section is present, raise
|
|
KeyError.
|
|
|
|
The section DEFAULT is never returned because it cannot be removed.
|
|
"""
|
|
for key in self.sections():
|
|
value = self[key]
|
|
del self[key]
|
|
return key, value
|
|
raise KeyError
|
|
|
|
def optionxform(self, optionstr):
|
|
return optionstr.lower()
|
|
|
|
def has_option(self, section, option):
|
|
"""Check for the existence of a given option in a given section.
|
|
If the specified `section' is None or an empty string, DEFAULT is
|
|
assumed. If the specified `section' does not exist, returns False."""
|
|
if not section or section == self.default_section:
|
|
option = self.optionxform(option)
|
|
return option in self._defaults
|
|
elif section not in self._sections:
|
|
return False
|
|
else:
|
|
option = self.optionxform(option)
|
|
return (option in self._sections[section]
|
|
or option in self._defaults)
|
|
|
|
def set(self, section, option, value=None):
|
|
"""Set an option."""
|
|
if value:
|
|
value = self._interpolation.before_set(self, section, option,
|
|
value)
|
|
if not section or section == self.default_section:
|
|
sectdict = self._defaults
|
|
else:
|
|
try:
|
|
sectdict = self._sections[section]
|
|
except KeyError:
|
|
raise from_none(NoSectionError(section))
|
|
sectdict[self.optionxform(option)] = value
|
|
|
|
def write(self, fp, space_around_delimiters=True):
|
|
"""Write an .ini-format representation of the configuration state.
|
|
|
|
If `space_around_delimiters' is True (the default), delimiters
|
|
between keys and values are surrounded by spaces.
|
|
"""
|
|
if space_around_delimiters:
|
|
d = " {0} ".format(self._delimiters[0])
|
|
else:
|
|
d = self._delimiters[0]
|
|
if self._defaults:
|
|
self._write_section(fp, self.default_section,
|
|
self._defaults.items(), d)
|
|
for section in self._sections:
|
|
self._write_section(fp, section,
|
|
self._sections[section].items(), d)
|
|
|
|
def _write_section(self, fp, section_name, section_items, delimiter):
|
|
"""Write a single section to the specified `fp'."""
|
|
fp.write("[{0}]\n".format(section_name))
|
|
for key, value in section_items:
|
|
value = self._interpolation.before_write(self, section_name, key,
|
|
value)
|
|
if value is not None or not self._allow_no_value:
|
|
value = delimiter + str(value).replace('\n', '\n\t')
|
|
else:
|
|
value = ""
|
|
fp.write("{0}{1}\n".format(key, value))
|
|
fp.write("\n")
|
|
|
|
def remove_option(self, section, option):
|
|
"""Remove an option."""
|
|
if not section or section == self.default_section:
|
|
sectdict = self._defaults
|
|
else:
|
|
try:
|
|
sectdict = self._sections[section]
|
|
except KeyError:
|
|
raise from_none(NoSectionError(section))
|
|
option = self.optionxform(option)
|
|
existed = option in sectdict
|
|
if existed:
|
|
del sectdict[option]
|
|
return existed
|
|
|
|
def remove_section(self, section):
|
|
"""Remove a file section."""
|
|
existed = section in self._sections
|
|
if existed:
|
|
del self._sections[section]
|
|
del self._proxies[section]
|
|
return existed
|
|
|
|
def __getitem__(self, key):
|
|
if key != self.default_section and not self.has_section(key):
|
|
raise KeyError(key)
|
|
return self._proxies[key]
|
|
|
|
def __setitem__(self, key, value):
|
|
# To conform with the mapping protocol, overwrites existing values in
|
|
# the section.
|
|
|
|
# XXX this is not atomic if read_dict fails at any point. Then again,
|
|
# no update method in configparser is atomic in this implementation.
|
|
if key == self.default_section:
|
|
self._defaults.clear()
|
|
elif key in self._sections:
|
|
self._sections[key].clear()
|
|
self.read_dict({key: value})
|
|
|
|
def __delitem__(self, key):
|
|
if key == self.default_section:
|
|
raise ValueError("Cannot remove the default section.")
|
|
if not self.has_section(key):
|
|
raise KeyError(key)
|
|
self.remove_section(key)
|
|
|
|
def __contains__(self, key):
|
|
return key == self.default_section or self.has_section(key)
|
|
|
|
def __len__(self):
|
|
return len(self._sections) + 1 # the default section
|
|
|
|
def __iter__(self):
|
|
# XXX does it break when underlying container state changed?
|
|
return itertools.chain((self.default_section,), self._sections.keys())
|
|
|
|
def _read(self, fp, fpname):
|
|
"""Parse a sectioned configuration file.
|
|
|
|
Each section in a configuration file contains a header, indicated by
|
|
a name in square brackets (`[]'), plus key/value options, indicated by
|
|
`name' and `value' delimited with a specific substring (`=' or `:' by
|
|
default).
|
|
|
|
Values can span multiple lines, as long as they are indented deeper
|
|
than the first line of the value. Depending on the parser's mode, blank
|
|
lines may be treated as parts of multiline values or ignored.
|
|
|
|
Configuration files may include comments, prefixed by specific
|
|
characters (`#' and `;' by default). Comments may appear on their own
|
|
in an otherwise empty line or may be entered in lines holding values or
|
|
section names.
|
|
"""
|
|
elements_added = set()
|
|
cursect = None # None, or a dictionary
|
|
sectname = None
|
|
optname = None
|
|
lineno = 0
|
|
indent_level = 0
|
|
e = None # None, or an exception
|
|
for lineno, line in enumerate(fp, start=1):
|
|
comment_start = sys.maxsize
|
|
# strip inline comments
|
|
inline_prefixes = dict(
|
|
(p, -1) for p in self._inline_comment_prefixes)
|
|
while comment_start == sys.maxsize and inline_prefixes:
|
|
next_prefixes = {}
|
|
for prefix, index in inline_prefixes.items():
|
|
index = line.find(prefix, index+1)
|
|
if index == -1:
|
|
continue
|
|
next_prefixes[prefix] = index
|
|
if index == 0 or (index > 0 and line[index-1].isspace()):
|
|
comment_start = min(comment_start, index)
|
|
inline_prefixes = next_prefixes
|
|
# strip full line comments
|
|
for prefix in self._comment_prefixes:
|
|
if line.strip().startswith(prefix):
|
|
comment_start = 0
|
|
break
|
|
if comment_start == sys.maxsize:
|
|
comment_start = None
|
|
value = line[:comment_start].strip()
|
|
if not value:
|
|
if self._empty_lines_in_values:
|
|
# add empty line to the value, but only if there was no
|
|
# comment on the line
|
|
if (comment_start is None and
|
|
cursect is not None and
|
|
optname and
|
|
cursect[optname] is not None):
|
|
cursect[optname].append('') # newlines added at join
|
|
else:
|
|
# empty line marks end of value
|
|
indent_level = sys.maxsize
|
|
continue
|
|
# continuation line?
|
|
first_nonspace = self.NONSPACECRE.search(line)
|
|
cur_indent_level = first_nonspace.start() if first_nonspace else 0
|
|
if (cursect is not None and optname and
|
|
cur_indent_level > indent_level):
|
|
cursect[optname].append(value)
|
|
# a section header or option header?
|
|
else:
|
|
indent_level = cur_indent_level
|
|
# is it a section header?
|
|
mo = self.SECTCRE.match(value)
|
|
if mo:
|
|
sectname = mo.group('header')
|
|
if sectname in self._sections:
|
|
if self._strict and sectname in elements_added:
|
|
raise DuplicateSectionError(sectname, fpname,
|
|
lineno)
|
|
cursect = self._sections[sectname]
|
|
elements_added.add(sectname)
|
|
elif sectname == self.default_section:
|
|
cursect = self._defaults
|
|
else:
|
|
cursect = self._dict()
|
|
self._sections[sectname] = cursect
|
|
self._proxies[sectname] = SectionProxy(self, sectname)
|
|
elements_added.add(sectname)
|
|
# So sections can't start with a continuation line
|
|
optname = None
|
|
# no section header in the file?
|
|
elif cursect is None:
|
|
raise MissingSectionHeaderError(fpname, lineno, line)
|
|
# an option line?
|
|
else:
|
|
mo = self._optcre.match(value)
|
|
if mo:
|
|
optname, vi, optval = mo.group('option', 'vi', 'value')
|
|
if not optname:
|
|
e = self._handle_error(e, fpname, lineno, line)
|
|
optname = self.optionxform(optname.rstrip())
|
|
if (self._strict and
|
|
(sectname, optname) in elements_added):
|
|
raise DuplicateOptionError(sectname, optname,
|
|
fpname, lineno)
|
|
elements_added.add((sectname, optname))
|
|
# This check is fine because the OPTCRE cannot
|
|
# match if it would set optval to None
|
|
if optval is not None:
|
|
optval = optval.strip()
|
|
cursect[optname] = [optval]
|
|
else:
|
|
# valueless option handling
|
|
cursect[optname] = None
|
|
else:
|
|
# a non-fatal parsing error occurred. set up the
|
|
# exception but keep going. the exception will be
|
|
# raised at the end of the file and will contain a
|
|
# list of all bogus lines
|
|
e = self._handle_error(e, fpname, lineno, line)
|
|
# if any parsing errors occurred, raise an exception
|
|
if e:
|
|
raise e
|
|
self._join_multiline_values()
|
|
|
|
def _join_multiline_values(self):
|
|
defaults = self.default_section, self._defaults
|
|
all_sections = itertools.chain((defaults,),
|
|
self._sections.items())
|
|
for section, options in all_sections:
|
|
for name, val in options.items():
|
|
if isinstance(val, list):
|
|
val = '\n'.join(val).rstrip()
|
|
options[name] = self._interpolation.before_read(self,
|
|
section,
|
|
name, val)
|
|
|
|
def _handle_error(self, exc, fpname, lineno, line):
|
|
if not exc:
|
|
exc = ParsingError(fpname)
|
|
exc.append(lineno, repr(line))
|
|
return exc
|
|
|
|
def _unify_values(self, section, vars):
|
|
"""Create a sequence of lookups with 'vars' taking priority over
|
|
the 'section' which takes priority over the DEFAULTSECT.
|
|
|
|
"""
|
|
sectiondict = {}
|
|
try:
|
|
sectiondict = self._sections[section]
|
|
except KeyError:
|
|
if section != self.default_section:
|
|
raise NoSectionError(section)
|
|
# Update with the entry specific variables
|
|
vardict = {}
|
|
if vars:
|
|
for key, value in vars.items():
|
|
if value is not None:
|
|
value = str(value)
|
|
vardict[self.optionxform(key)] = value
|
|
return _ChainMap(vardict, sectiondict, self._defaults)
|
|
|
|
def _convert_to_boolean(self, value):
|
|
"""Return a boolean value translating from other types if necessary.
|
|
"""
|
|
if value.lower() not in self.BOOLEAN_STATES:
|
|
raise ValueError('Not a boolean: %s' % value)
|
|
return self.BOOLEAN_STATES[value.lower()]
|
|
|
|
def _validate_value_types(self, **kwargs):
|
|
"""Raises a TypeError for non-string values.
|
|
|
|
The only legal non-string value if we allow valueless
|
|
options is None, so we need to check if the value is a
|
|
string if:
|
|
- we do not allow valueless options, or
|
|
- we allow valueless options but the value is not None
|
|
|
|
For compatibility reasons this method is not used in classic set()
|
|
for RawConfigParsers. It is invoked in every case for mapping protocol
|
|
access and in ConfigParser.set().
|
|
"""
|
|
# keyword-only arguments
|
|
section = kwargs.get('section', "")
|
|
option = kwargs.get('option', "")
|
|
value = kwargs.get('value', "")
|
|
|
|
if PY2 and bytes in (type(section), type(option), type(value)):
|
|
# we allow for a little unholy magic for Python 2 so that
|
|
# people not using unicode_literals can still use the library
|
|
# conveniently
|
|
warnings.warn(
|
|
"You passed a bytestring. Implicitly decoding as UTF-8 string."
|
|
" This will not work on Python 3. Please switch to using"
|
|
" Unicode strings across the board.",
|
|
DeprecationWarning,
|
|
stacklevel=2,
|
|
)
|
|
if isinstance(section, bytes):
|
|
section = section.decode('utf8')
|
|
if isinstance(option, bytes):
|
|
option = option.decode('utf8')
|
|
if isinstance(value, bytes):
|
|
value = value.decode('utf8')
|
|
|
|
if not isinstance(section, str):
|
|
raise TypeError("section names must be strings")
|
|
if not isinstance(option, str):
|
|
raise TypeError("option keys must be strings")
|
|
if not self._allow_no_value or value:
|
|
if not isinstance(value, str):
|
|
raise TypeError("option values must be strings")
|
|
|
|
return section, option, value
|
|
|
|
|
|
class ConfigParser(RawConfigParser):
|
|
"""ConfigParser implementing interpolation."""
|
|
|
|
_DEFAULT_INTERPOLATION = BasicInterpolation()
|
|
|
|
def set(self, section, option, value=None):
|
|
"""Set an option. Extends RawConfigParser.set by validating type and
|
|
interpolation syntax on the value."""
|
|
_, option, value = self._validate_value_types(option=option, value=value)
|
|
super(ConfigParser, self).set(section, option, value)
|
|
|
|
def add_section(self, section):
|
|
"""Create a new section in the configuration. Extends
|
|
RawConfigParser.add_section by validating if the section name is
|
|
a string."""
|
|
section, _, _ = self._validate_value_types(section=section)
|
|
super(ConfigParser, self).add_section(section)
|
|
|
|
|
|
class SafeConfigParser(ConfigParser):
|
|
"""ConfigParser alias for backwards compatibility purposes."""
|
|
|
|
def __init__(self, *args, **kwargs):
|
|
super(SafeConfigParser, self).__init__(*args, **kwargs)
|
|
warnings.warn(
|
|
"The SafeConfigParser class has been renamed to ConfigParser "
|
|
"in Python 3.2. This alias will be removed in future versions."
|
|
" Use ConfigParser directly instead.",
|
|
DeprecationWarning, stacklevel=2
|
|
)
|
|
|
|
|
|
class SectionProxy(MutableMapping):
|
|
"""A proxy for a single section from a parser."""
|
|
|
|
def __init__(self, parser, name):
|
|
"""Creates a view on a section of the specified `name` in `parser`."""
|
|
self._parser = parser
|
|
self._name = name
|
|
|
|
def __repr__(self):
|
|
return '<Section: {0}>'.format(self._name)
|
|
|
|
def __getitem__(self, key):
|
|
if not self._parser.has_option(self._name, key):
|
|
raise KeyError(key)
|
|
return self._parser.get(self._name, key)
|
|
|
|
def __setitem__(self, key, value):
|
|
_, key, value = self._parser._validate_value_types(option=key, value=value)
|
|
return self._parser.set(self._name, key, value)
|
|
|
|
def __delitem__(self, key):
|
|
if not (self._parser.has_option(self._name, key) and
|
|
self._parser.remove_option(self._name, key)):
|
|
raise KeyError(key)
|
|
|
|
def __contains__(self, key):
|
|
return self._parser.has_option(self._name, key)
|
|
|
|
def __len__(self):
|
|
return len(self._options())
|
|
|
|
def __iter__(self):
|
|
return self._options().__iter__()
|
|
|
|
def _options(self):
|
|
if self._name != self._parser.default_section:
|
|
return self._parser.options(self._name)
|
|
else:
|
|
return self._parser.defaults()
|
|
|
|
def get(self, option, fallback=None, **kwargs):
|
|
# keyword-only arguments
|
|
raw = kwargs.get('raw', False)
|
|
vars = kwargs.get('vars', None)
|
|
|
|
return self._parser.get(self._name, option, raw=raw, vars=vars,
|
|
fallback=fallback)
|
|
|
|
def getint(self, option, fallback=None, **kwargs):
|
|
# keyword-only arguments
|
|
raw = kwargs.get('raw', False)
|
|
vars = kwargs.get('vars', None)
|
|
|
|
return self._parser.getint(self._name, option, raw=raw, vars=vars,
|
|
fallback=fallback)
|
|
|
|
def getfloat(self, option, fallback=None, **kwargs):
|
|
# keyword-only arguments
|
|
raw = kwargs.get('raw', False)
|
|
vars = kwargs.get('vars', None)
|
|
|
|
return self._parser.getfloat(self._name, option, raw=raw, vars=vars,
|
|
fallback=fallback)
|
|
|
|
def getboolean(self, option, fallback=None, **kwargs):
|
|
# keyword-only arguments
|
|
raw = kwargs.get('raw', False)
|
|
vars = kwargs.get('vars', None)
|
|
|
|
return self._parser.getboolean(self._name, option, raw=raw, vars=vars,
|
|
fallback=fallback)
|
|
|
|
@property
|
|
def parser(self):
|
|
# The parser object of the proxy is read-only.
|
|
return self._parser
|
|
|
|
@property
|
|
def name(self):
|
|
# The name of the section on a proxy is read-only.
|
|
return self._name
|