mirror of
https://github.com/python/cpython.git
synced 2024-11-25 10:54:51 +08:00
824 lines
31 KiB
Python
824 lines
31 KiB
Python
"""Configuration file parser.
|
|
|
|
A configuration file consists of sections, lead by a "[section]" header,
|
|
and followed by "name: value" entries, with continuations and such in
|
|
the style of RFC 822.
|
|
|
|
The option values can contain format strings which refer to other values in
|
|
the same section, or values in a special [DEFAULT] section.
|
|
|
|
For example:
|
|
|
|
something: %(dir)s/whatever
|
|
|
|
would resolve the "%(dir)s" to the value of dir. All reference
|
|
expansions are done late, on demand.
|
|
|
|
Intrinsic defaults can be specified by passing them into the
|
|
ConfigParser constructor as a dictionary.
|
|
|
|
class:
|
|
|
|
ConfigParser -- responsible for parsing a list of
|
|
configuration files, and managing the parsed database.
|
|
|
|
methods:
|
|
|
|
__init__(defaults=None, dict_type=_default_dict,
|
|
delimiters=('=', ':'), comment_prefixes=('#', ';'),
|
|
empty_lines_in_values=True, allow_no_value=False):
|
|
Create the parser. When `defaults' is given, it is initialized into the
|
|
dictionary or intrinsic defaults. The keys must be strings, the values
|
|
must be appropriate for %()s string interpolation. Note that `__name__'
|
|
is always an intrinsic default; its value is the section's name.
|
|
|
|
When `dict_type' is given, it will be used to create the dictionary
|
|
objects for the list of sections, for the options within a section, and
|
|
for the default values.
|
|
|
|
When `delimiters' is given, it will be used as the set of substrings
|
|
that divide keys from values.
|
|
|
|
When `comment_prefixes' is given, it will be used as the set of
|
|
substrings that prefix comments in a line.
|
|
|
|
When `empty_lines_in_values' is False (default: True), each empty line
|
|
marks the end of an option. Otherwise, internal empty lines of
|
|
a multiline option are kept as part of the value.
|
|
|
|
When `allow_no_value' is True (default: False), options without
|
|
values are accepted; the value presented for these is None.
|
|
|
|
sections()
|
|
Return all the configuration section names, sans DEFAULT.
|
|
|
|
has_section(section)
|
|
Return whether the given section exists.
|
|
|
|
has_option(section, option)
|
|
Return whether the given option exists in the given section.
|
|
|
|
options(section)
|
|
Return list of configuration options for the named section.
|
|
|
|
read(filenames, encoding=None)
|
|
Read and parse the list of named configuration files, given by
|
|
name. A single filename is also allowed. Non-existing files
|
|
are ignored. Return list of successfully read files.
|
|
|
|
readfp(fp, filename=None)
|
|
Read and parse one configuration file, given as a file object.
|
|
The filename defaults to fp.name; it is only used in error
|
|
messages (if fp has no `name' attribute, the string `<???>' is used).
|
|
|
|
get(section, option, raw=False, vars=None)
|
|
Return a string value for the named option. All % interpolations are
|
|
expanded in the return values, based on the defaults passed into the
|
|
constructor and the DEFAULT section. Additional substitutions may be
|
|
provided using the `vars' argument, which must be a dictionary whose
|
|
contents override any pre-existing defaults.
|
|
|
|
getint(section, options)
|
|
Like get(), but convert value to an integer.
|
|
|
|
getfloat(section, options)
|
|
Like get(), but convert value to a float.
|
|
|
|
getboolean(section, options)
|
|
Like get(), but convert value to a boolean (currently case
|
|
insensitively defined as 0, false, no, off for False, and 1, true,
|
|
yes, on for True). Returns False or True.
|
|
|
|
items(section, raw=False, vars=None)
|
|
Return a list of tuples with (name, value) for each option
|
|
in the section.
|
|
|
|
remove_section(section)
|
|
Remove the given file section and all its options.
|
|
|
|
remove_option(section, option)
|
|
Remove the given option from the given section.
|
|
|
|
set(section, option, value)
|
|
Set the given option.
|
|
|
|
write(fp, space_around_delimiters=True)
|
|
Write the configuration state in .ini format. If
|
|
`space_around_delimiters' is True (the default), delimiters
|
|
between keys and values are surrounded by spaces.
|
|
"""
|
|
|
|
try:
|
|
from collections import OrderedDict as _default_dict
|
|
except ImportError:
|
|
# fallback for setup.py which hasn't yet built _collections
|
|
_default_dict = dict
|
|
|
|
import re
|
|
import sys
|
|
|
|
__all__ = ["NoSectionError", "DuplicateSectionError", "NoOptionError",
|
|
"InterpolationError", "InterpolationDepthError",
|
|
"InterpolationSyntaxError", "ParsingError",
|
|
"MissingSectionHeaderError",
|
|
"ConfigParser", "SafeConfigParser", "RawConfigParser",
|
|
"DEFAULTSECT", "MAX_INTERPOLATION_DEPTH"]
|
|
|
|
DEFAULTSECT = "DEFAULT"
|
|
|
|
MAX_INTERPOLATION_DEPTH = 10
|
|
|
|
|
|
|
|
# exception classes
|
|
class Error(Exception):
|
|
"""Base class for ConfigParser exceptions."""
|
|
|
|
def _get_message(self):
|
|
"""Getter for 'message'; needed only to override deprecation in
|
|
BaseException.
|
|
"""
|
|
return self.__message
|
|
|
|
def _set_message(self, value):
|
|
"""Setter for 'message'; needed only to override deprecation in
|
|
BaseException.
|
|
"""
|
|
self.__message = value
|
|
|
|
# BaseException.message has been deprecated since Python 2.6. To prevent
|
|
# DeprecationWarning from popping up over this pre-existing attribute, use a
|
|
# new property that takes lookup precedence.
|
|
message = property(_get_message, _set_message)
|
|
|
|
def __init__(self, msg=''):
|
|
self.message = msg
|
|
Exception.__init__(self, msg)
|
|
|
|
def __repr__(self):
|
|
return self.message
|
|
|
|
__str__ = __repr__
|
|
|
|
|
|
class NoSectionError(Error):
|
|
"""Raised when no section matches a requested option."""
|
|
|
|
def __init__(self, section):
|
|
Error.__init__(self, 'No section: %r' % (section,))
|
|
self.section = section
|
|
self.args = (section, )
|
|
|
|
|
|
class DuplicateSectionError(Error):
|
|
"""Raised when a section is multiply-created."""
|
|
|
|
def __init__(self, section):
|
|
Error.__init__(self, "Section %r already exists" % section)
|
|
self.section = section
|
|
self.args = (section, )
|
|
|
|
|
|
class NoOptionError(Error):
|
|
"""A requested option was not found."""
|
|
|
|
def __init__(self, option, section):
|
|
Error.__init__(self, "No option %r in section: %r" %
|
|
(option, section))
|
|
self.option = option
|
|
self.section = section
|
|
self.args = (option, section)
|
|
|
|
|
|
class InterpolationError(Error):
|
|
"""Base class for interpolation-related exceptions."""
|
|
|
|
def __init__(self, option, section, msg):
|
|
Error.__init__(self, msg)
|
|
self.option = option
|
|
self.section = section
|
|
self.args = (option, section, msg)
|
|
|
|
|
|
class InterpolationMissingOptionError(InterpolationError):
|
|
"""A string substitution required a setting which was not available."""
|
|
|
|
def __init__(self, option, section, rawval, reference):
|
|
msg = ("Bad value substitution:\n"
|
|
"\tsection: [%s]\n"
|
|
"\toption : %s\n"
|
|
"\tkey : %s\n"
|
|
"\trawval : %s\n"
|
|
% (section, option, reference, rawval))
|
|
InterpolationError.__init__(self, option, section, msg)
|
|
self.reference = reference
|
|
self.args = (option, section, rawval, reference)
|
|
|
|
|
|
class InterpolationSyntaxError(InterpolationError):
|
|
"""Raised when the source text into which substitutions are made
|
|
does not conform to the required syntax."""
|
|
|
|
|
|
class InterpolationDepthError(InterpolationError):
|
|
"""Raised when substitutions are nested too deeply."""
|
|
|
|
def __init__(self, option, section, rawval):
|
|
msg = ("Value interpolation too deeply recursive:\n"
|
|
"\tsection: [%s]\n"
|
|
"\toption : %s\n"
|
|
"\trawval : %s\n"
|
|
% (section, option, rawval))
|
|
InterpolationError.__init__(self, option, section, msg)
|
|
self.args = (option, section, rawval)
|
|
|
|
|
|
class ParsingError(Error):
|
|
"""Raised when a configuration file does not follow legal syntax."""
|
|
|
|
def __init__(self, filename):
|
|
Error.__init__(self, 'File contains parsing errors: %s' % filename)
|
|
self.filename = filename
|
|
self.errors = []
|
|
self.args = (filename, )
|
|
|
|
def append(self, lineno, line):
|
|
self.errors.append((lineno, line))
|
|
self.message += '\n\t[line %2d]: %s' % (lineno, line)
|
|
|
|
|
|
class MissingSectionHeaderError(ParsingError):
|
|
"""Raised when a key-value pair is found before any section header."""
|
|
|
|
def __init__(self, filename, lineno, line):
|
|
Error.__init__(
|
|
self,
|
|
'File contains no section headers.\nfile: %s, line: %d\n%r' %
|
|
(filename, lineno, line))
|
|
self.filename = filename
|
|
self.lineno = lineno
|
|
self.line = line
|
|
self.args = (filename, lineno, line)
|
|
|
|
|
|
class RawConfigParser:
|
|
"""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
|
|
"""
|
|
|
|
# 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")
|
|
# Select backwards-compatible inline comment character behavior
|
|
# (; and # are comments at the start of a line, but ; only inline)
|
|
_COMPATIBLE = object()
|
|
|
|
def __init__(self, defaults=None, dict_type=_default_dict,
|
|
delimiters=('=', ':'), comment_prefixes=_COMPATIBLE,
|
|
empty_lines_in_values=True, allow_no_value=False):
|
|
self._dict = dict_type
|
|
self._sections = self._dict()
|
|
self._defaults = self._dict()
|
|
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:
|
|
delim = "|".join(re.escape(d) for d in delimiters)
|
|
if allow_no_value:
|
|
self._optcre = re.compile(self._OPT_NV_TMPL.format(delim=delim),
|
|
re.VERBOSE)
|
|
else:
|
|
self._optcre = re.compile(self._OPT_TMPL.format(delim=delim),
|
|
re.VERBOSE)
|
|
if comment_prefixes is self._COMPATIBLE:
|
|
self._startonly_comment_prefixes = ('#',)
|
|
self._comment_prefixes = (';',)
|
|
else:
|
|
self._startonly_comment_prefixes = ()
|
|
self._comment_prefixes = tuple(comment_prefixes or ())
|
|
self._empty_lines_in_values = empty_lines_in_values
|
|
|
|
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 or any of it's
|
|
case-insensitive variants.
|
|
"""
|
|
if section.lower() == "default":
|
|
raise ValueError('Invalid section name: %s' % section)
|
|
|
|
if section in self._sections:
|
|
raise DuplicateSectionError(section)
|
|
self._sections[section] = self._dict()
|
|
|
|
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 NoSectionError(section)
|
|
opts.update(self._defaults)
|
|
if '__name__' in opts:
|
|
del opts['__name__']
|
|
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 isinstance(filenames, str):
|
|
filenames = [filenames]
|
|
read_ok = []
|
|
for filename in filenames:
|
|
try:
|
|
fp = open(filename, encoding=encoding)
|
|
except IOError:
|
|
continue
|
|
self._read(fp, filename)
|
|
fp.close()
|
|
read_ok.append(filename)
|
|
return read_ok
|
|
|
|
def readfp(self, fp, filename=None):
|
|
"""Like read() but the argument must be a file-like object.
|
|
|
|
The `fp' argument must have a `readline' method. Optional
|
|
second argument is the `filename', which if not given, is
|
|
taken from fp.name. If fp has no `name' attribute, `<???>' is
|
|
used.
|
|
"""
|
|
if filename is None:
|
|
try:
|
|
filename = fp.name
|
|
except AttributeError:
|
|
filename = '<???>'
|
|
self._read(fp, filename)
|
|
|
|
def get(self, section, option):
|
|
opt = self.optionxform(option)
|
|
if section not in self._sections:
|
|
if section != DEFAULTSECT:
|
|
raise NoSectionError(section)
|
|
if opt in self._defaults:
|
|
return self._defaults[opt]
|
|
else:
|
|
raise NoOptionError(option, section)
|
|
elif opt in self._sections[section]:
|
|
return self._sections[section][opt]
|
|
elif opt in self._defaults:
|
|
return self._defaults[opt]
|
|
else:
|
|
raise NoOptionError(option, section)
|
|
|
|
def items(self, section):
|
|
try:
|
|
d2 = self._sections[section]
|
|
except KeyError:
|
|
if section != DEFAULTSECT:
|
|
raise NoSectionError(section)
|
|
d2 = self._dict()
|
|
d = self._defaults.copy()
|
|
d.update(d2)
|
|
if "__name__" in d:
|
|
del d["__name__"]
|
|
return d.items()
|
|
|
|
def _get(self, section, conv, option):
|
|
return conv(self.get(section, option))
|
|
|
|
def getint(self, section, option):
|
|
return self._get(section, int, option)
|
|
|
|
def getfloat(self, section, option):
|
|
return self._get(section, float, option)
|
|
|
|
_boolean_states = {'1': True, 'yes': True, 'true': True, 'on': True,
|
|
'0': False, 'no': False, 'false': False, 'off': False}
|
|
|
|
def getboolean(self, section, option):
|
|
v = self.get(section, option)
|
|
if v.lower() not in self._boolean_states:
|
|
raise ValueError('Not a boolean: %s' % v)
|
|
return self._boolean_states[v.lower()]
|
|
|
|
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 not section or section == DEFAULTSECT:
|
|
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 not section or section == DEFAULTSECT:
|
|
sectdict = self._defaults
|
|
else:
|
|
try:
|
|
sectdict = self._sections[section]
|
|
except KeyError:
|
|
raise 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 = " {} ".format(self._delimiters[0])
|
|
else:
|
|
d = self._delimiters[0]
|
|
if self._defaults:
|
|
self._write_section(fp, DEFAULTSECT, 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("[{}]\n".format(section_name))
|
|
for key, value in section_items:
|
|
if key == "__name__":
|
|
continue
|
|
if value is not None:
|
|
value = delimiter + str(value).replace('\n', '\n\t')
|
|
else:
|
|
value = ""
|
|
fp.write("{}{}\n".format(key, value))
|
|
fp.write("\n")
|
|
|
|
def remove_option(self, section, option):
|
|
"""Remove an option."""
|
|
if not section or section == DEFAULTSECT:
|
|
sectdict = self._defaults
|
|
else:
|
|
try:
|
|
sectdict = self._sections[section]
|
|
except KeyError:
|
|
raise 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]
|
|
return existed
|
|
|
|
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.
|
|
"""
|
|
cursect = None # None, or a dictionary
|
|
optname = None
|
|
lineno = 0
|
|
indent_level = 0
|
|
e = None # None, or an exception
|
|
for lineno, line in enumerate(fp, start=1):
|
|
# strip full line comments
|
|
comment_start = None
|
|
for prefix in self._startonly_comment_prefixes:
|
|
if line.strip().startswith(prefix):
|
|
comment_start = 0
|
|
break
|
|
# strip inline comments
|
|
for prefix in self._comment_prefixes:
|
|
index = line.find(prefix)
|
|
if index == 0 or (index > 0 and line[index-1].isspace()):
|
|
comment_start = index
|
|
break
|
|
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:
|
|
cursect = self._sections[sectname]
|
|
elif sectname == DEFAULTSECT:
|
|
cursect = self._defaults
|
|
else:
|
|
cursect = self._dict()
|
|
cursect['__name__'] = sectname
|
|
self._sections[sectname] = cursect
|
|
# 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())
|
|
# This check is fine because the OPTCRE cannot
|
|
# match if it would set optval to None
|
|
if optval is not None:
|
|
optval = optval.strip()
|
|
# allow empty values
|
|
if optval == '""':
|
|
optval = ''
|
|
cursect[optname] = [optval]
|
|
else:
|
|
# valueless option handling
|
|
cursect[optname] = optval
|
|
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):
|
|
all_sections = [self._defaults]
|
|
all_sections.extend(self._sections.values())
|
|
for options in all_sections:
|
|
for name, val in options.items():
|
|
if isinstance(val, list):
|
|
options[name] = '\n'.join(val).rstrip()
|
|
|
|
def _handle_error(self, exc, fpname, lineno, line):
|
|
if not exc:
|
|
exc = ParsingError(fpname)
|
|
exc.append(lineno, repr(line))
|
|
return exc
|
|
|
|
|
|
class ConfigParser(RawConfigParser):
|
|
"""ConfigParser implementing interpolation."""
|
|
|
|
def get(self, section, option, raw=False, vars=None):
|
|
"""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 `defaults' in that order.
|
|
|
|
All % interpolations are expanded in the return values, unless the
|
|
optional argument `raw' is true. Values for interpolation keys are
|
|
looked up in the same manner as the option.
|
|
|
|
The section DEFAULT is special.
|
|
"""
|
|
d = self._defaults.copy()
|
|
try:
|
|
d.update(self._sections[section])
|
|
except KeyError:
|
|
if section != DEFAULTSECT:
|
|
raise NoSectionError(section)
|
|
# Update with the entry specific variables
|
|
if vars:
|
|
for key, value in vars.items():
|
|
d[self.optionxform(key)] = value
|
|
option = self.optionxform(option)
|
|
try:
|
|
value = d[option]
|
|
except KeyError:
|
|
raise NoOptionError(option, section)
|
|
|
|
if raw or value is None:
|
|
return value
|
|
else:
|
|
return self._interpolate(section, option, value, d)
|
|
|
|
def items(self, section, raw=False, vars=None):
|
|
"""Return a list of tuples with (name, value) for each option
|
|
in the 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.
|
|
"""
|
|
d = self._defaults.copy()
|
|
try:
|
|
d.update(self._sections[section])
|
|
except KeyError:
|
|
if section != DEFAULTSECT:
|
|
raise NoSectionError(section)
|
|
# Update with the entry specific variables
|
|
if vars:
|
|
for key, value in vars.items():
|
|
d[self.optionxform(key)] = value
|
|
options = list(d.keys())
|
|
if "__name__" in options:
|
|
options.remove("__name__")
|
|
if raw:
|
|
return [(option, d[option])
|
|
for option in options]
|
|
else:
|
|
return [(option, self._interpolate(section, option, d[option], d))
|
|
for option in options]
|
|
|
|
def _interpolate(self, section, option, rawval, vars):
|
|
# do the string interpolation
|
|
value = rawval
|
|
depth = MAX_INTERPOLATION_DEPTH
|
|
while depth: # Loop through this until it's done
|
|
depth -= 1
|
|
if value and "%(" in value:
|
|
value = self._KEYCRE.sub(self._interpolation_replace, value)
|
|
try:
|
|
value = value % vars
|
|
except KeyError as e:
|
|
raise InterpolationMissingOptionError(
|
|
option, section, rawval, e.args[0])
|
|
else:
|
|
break
|
|
if value and "%(" in value:
|
|
raise InterpolationDepthError(option, section, rawval)
|
|
return value
|
|
|
|
_KEYCRE = re.compile(r"%\(([^)]*)\)s|.")
|
|
|
|
def _interpolation_replace(self, match):
|
|
s = match.group(1)
|
|
if s is None:
|
|
return match.group()
|
|
else:
|
|
return "%%(%s)s" % self.optionxform(s)
|
|
|
|
|
|
class SafeConfigParser(ConfigParser):
|
|
"""ConfigParser implementing sane interpolation."""
|
|
|
|
def _interpolate(self, section, option, rawval, vars):
|
|
# do the string interpolation
|
|
L = []
|
|
self._interpolate_some(option, L, rawval, section, vars, 1)
|
|
return ''.join(L)
|
|
|
|
_interpvar_re = re.compile(r"%\(([^)]+)\)s")
|
|
|
|
def _interpolate_some(self, option, accum, rest, section, map, depth):
|
|
if depth > MAX_INTERPOLATION_DEPTH:
|
|
raise InterpolationDepthError(option, section, rest)
|
|
while rest:
|
|
p = rest.find("%")
|
|
if p < 0:
|
|
accum.append(rest)
|
|
return
|
|
if p > 0:
|
|
accum.append(rest[:p])
|
|
rest = rest[p:]
|
|
# p is no longer used
|
|
c = rest[1:2]
|
|
if c == "%":
|
|
accum.append("%")
|
|
rest = rest[2:]
|
|
elif c == "(":
|
|
m = self._interpvar_re.match(rest)
|
|
if m is None:
|
|
raise InterpolationSyntaxError(option, section,
|
|
"bad interpolation variable reference %r" % rest)
|
|
var = self.optionxform(m.group(1))
|
|
rest = rest[m.end():]
|
|
try:
|
|
v = map[var]
|
|
except KeyError:
|
|
raise InterpolationMissingOptionError(
|
|
option, section, rest, var)
|
|
if "%" in v:
|
|
self._interpolate_some(option, accum, v,
|
|
section, map, depth + 1)
|
|
else:
|
|
accum.append(v)
|
|
else:
|
|
raise InterpolationSyntaxError(
|
|
option, section,
|
|
"'%%' must be followed by '%%' or '(', found: %r" % (rest,))
|
|
|
|
def set(self, section, option, value=None):
|
|
"""Set an option. Extend ConfigParser.set: check for 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
|
|
if self._optcre is self.OPTCRE or value:
|
|
if not isinstance(value, str):
|
|
raise TypeError("option values must be strings")
|
|
# check for bad percent signs:
|
|
# first, replace all "good" interpolations
|
|
tmp_value = value.replace('%%', '')
|
|
tmp_value = self._interpvar_re.sub('', tmp_value)
|
|
# then, check if there's a lone percent sign left
|
|
percent_index = tmp_value.find('%')
|
|
if percent_index != -1:
|
|
raise ValueError("invalid interpolation syntax in %r at "
|
|
"position %d" % (value, percent_index))
|
|
ConfigParser.set(self, section, option, value)
|