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855 lines
36 KiB
855 lines
36 KiB
# $Id: frontend.py 8126 2017-06-23 09:34:28Z milde $
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# Author: David Goodger <goodger@python.org>
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# Copyright: This module has been placed in the public domain.
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"""
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Command-line and common processing for Docutils front-end tools.
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Exports the following classes:
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* `OptionParser`: Standard Docutils command-line processing.
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* `Option`: Customized version of `optparse.Option`; validation support.
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* `Values`: Runtime settings; objects are simple structs
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(``object.attribute``). Supports cumulative list settings (attributes).
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* `ConfigParser`: Standard Docutils config file processing.
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Also exports the following functions:
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* Option callbacks: `store_multiple`, `read_config_file`.
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* Setting validators: `validate_encoding`,
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`validate_encoding_error_handler`,
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`validate_encoding_and_error_handler`,
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`validate_boolean`, `validate_ternary`, `validate_threshold`,
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`validate_colon_separated_string_list`,
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`validate_comma_separated_string_list`,
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`validate_dependency_file`.
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* `make_paths_absolute`.
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* SettingSpec manipulation: `filter_settings_spec`.
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"""
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__docformat__ = 'reStructuredText'
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import os
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import os.path
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import sys
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import warnings
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import configparser as CP
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import codecs
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import optparse
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from optparse import SUPPRESS_HELP
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import docutils
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import docutils.utils
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import docutils.nodes
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from docutils.utils.error_reporting import (locale_encoding, SafeString,
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ErrorOutput, ErrorString)
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def store_multiple(option, opt, value, parser, *args, **kwargs):
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"""
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Store multiple values in `parser.values`. (Option callback.)
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Store `None` for each attribute named in `args`, and store the value for
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each key (attribute name) in `kwargs`.
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"""
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for attribute in args:
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setattr(parser.values, attribute, None)
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for key, value in list(kwargs.items()):
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setattr(parser.values, key, value)
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def read_config_file(option, opt, value, parser):
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"""
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Read a configuration file during option processing. (Option callback.)
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"""
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try:
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new_settings = parser.get_config_file_settings(value)
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except ValueError as error:
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parser.error(error)
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parser.values.update(new_settings, parser)
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def validate_encoding(setting, value, option_parser,
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config_parser=None, config_section=None):
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try:
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codecs.lookup(value)
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except LookupError:
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raise LookupError('setting "%s": unknown encoding: "%s"'
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% (setting, value))
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return value
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def validate_encoding_error_handler(setting, value, option_parser,
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config_parser=None, config_section=None):
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try:
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codecs.lookup_error(value)
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except LookupError:
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raise LookupError(
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'unknown encoding error handler: "%s" (choices: '
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'"strict", "ignore", "replace", "backslashreplace", '
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'"xmlcharrefreplace", and possibly others; see documentation for '
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'the Python ``codecs`` module)' % value)
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return value
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def validate_encoding_and_error_handler(
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setting, value, option_parser, config_parser=None, config_section=None):
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"""
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Side-effect: if an error handler is included in the value, it is inserted
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into the appropriate place as if it was a separate setting/option.
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"""
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if ':' in value:
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encoding, handler = value.split(':')
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validate_encoding_error_handler(
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setting + '_error_handler', handler, option_parser,
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config_parser, config_section)
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if config_parser:
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config_parser.set(config_section, setting + '_error_handler',
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handler)
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else:
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setattr(option_parser.values, setting + '_error_handler', handler)
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else:
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encoding = value
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validate_encoding(setting, encoding, option_parser,
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config_parser, config_section)
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return encoding
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def validate_boolean(setting, value, option_parser,
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config_parser=None, config_section=None):
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"""Check/normalize boolean settings:
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True: '1', 'on', 'yes', 'true'
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False: '0', 'off', 'no','false', ''
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"""
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if isinstance(value, bool):
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return value
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try:
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return option_parser.booleans[value.strip().lower()]
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except KeyError:
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raise LookupError('unknown boolean value: "%s"' % value)
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def validate_ternary(setting, value, option_parser,
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config_parser=None, config_section=None):
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"""Check/normalize three-value settings:
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True: '1', 'on', 'yes', 'true'
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False: '0', 'off', 'no','false', ''
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any other value: returned as-is.
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"""
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if isinstance(value, bool) or value is None:
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return value
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try:
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return option_parser.booleans[value.strip().lower()]
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except KeyError:
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return value
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def validate_nonnegative_int(setting, value, option_parser,
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config_parser=None, config_section=None):
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value = int(value)
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if value < 0:
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raise ValueError('negative value; must be positive or zero')
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return value
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def validate_threshold(setting, value, option_parser,
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config_parser=None, config_section=None):
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try:
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return int(value)
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except ValueError:
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try:
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return option_parser.thresholds[value.lower()]
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except (KeyError, AttributeError):
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raise LookupError('unknown threshold: %r.' % value)
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def validate_colon_separated_string_list(
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setting, value, option_parser, config_parser=None, config_section=None):
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if not isinstance(value, list):
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value = value.split(':')
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else:
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last = value.pop()
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value.extend(last.split(':'))
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return value
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def validate_comma_separated_list(setting, value, option_parser,
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config_parser=None, config_section=None):
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"""Check/normalize list arguments (split at "," and strip whitespace).
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"""
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# `value` is already a ``list`` when given as command line option
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# and "action" is "append" and ``unicode`` or ``str`` else.
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if not isinstance(value, list):
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value = [value]
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# this function is called for every option added to `value`
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# -> split the last item and append the result:
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last = value.pop()
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items = [i.strip(' \t\n') for i in last.split(',') if i.strip(' \t\n')]
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value.extend(items)
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return value
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def validate_url_trailing_slash(
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setting, value, option_parser, config_parser=None, config_section=None):
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if not value:
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return './'
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elif value.endswith('/'):
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return value
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else:
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return value + '/'
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def validate_dependency_file(setting, value, option_parser,
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config_parser=None, config_section=None):
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try:
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return docutils.utils.DependencyList(value)
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except IOError:
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return docutils.utils.DependencyList(None)
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def validate_strip_class(setting, value, option_parser,
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config_parser=None, config_section=None):
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# value is a comma separated string list:
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value = validate_comma_separated_list(setting, value, option_parser,
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config_parser, config_section)
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# validate list elements:
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for cls in value:
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normalized = docutils.nodes.make_id(cls)
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if cls != normalized:
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raise ValueError('Invalid class value %r (perhaps %r?)'
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% (cls, normalized))
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return value
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def validate_smartquotes_locales(setting, value, option_parser,
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config_parser=None, config_section=None):
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"""Check/normalize a comma separated list of smart quote definitions.
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Return a list of (language-tag, quotes) string tuples."""
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# value is a comma separated string list:
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value = validate_comma_separated_list(setting, value, option_parser,
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config_parser, config_section)
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# validate list elements
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lc_quotes = []
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for item in value:
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try:
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lang, quotes = item.split(':', 1)
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except AttributeError:
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# this function is called for every option added to `value`
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# -> ignore if already a tuple:
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lc_quotes.append(item)
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continue
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except ValueError:
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raise ValueError('Invalid value "%s".'
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' Format is "<language>:<quotes>".'
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% item.encode('ascii', 'backslashreplace'))
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# parse colon separated string list:
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quotes = quotes.strip()
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multichar_quotes = quotes.split(':')
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if len(multichar_quotes) == 4:
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quotes = multichar_quotes
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elif len(quotes) != 4:
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raise ValueError('Invalid value "%s". Please specify 4 quotes\n'
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' (primary open/close; secondary open/close).'
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% item.encode('ascii', 'backslashreplace'))
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lc_quotes.append((lang,quotes))
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return lc_quotes
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def make_paths_absolute(pathdict, keys, base_path=None):
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"""
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Interpret filesystem path settings relative to the `base_path` given.
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Paths are values in `pathdict` whose keys are in `keys`. Get `keys` from
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`OptionParser.relative_path_settings`.
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"""
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if base_path is None:
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base_path = os.getcwd() # type(base_path) == unicode
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# to allow combining non-ASCII cwd with unicode values in `pathdict`
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for key in keys:
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if key in pathdict:
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value = pathdict[key]
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if isinstance(value, list):
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value = [make_one_path_absolute(base_path, path)
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for path in value]
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elif value:
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value = make_one_path_absolute(base_path, value)
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pathdict[key] = value
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def make_one_path_absolute(base_path, path):
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return os.path.abspath(os.path.join(base_path, path))
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def filter_settings_spec(settings_spec, *exclude, **replace):
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"""Return a copy of `settings_spec` excluding/replacing some settings.
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`settings_spec` is a tuple of configuration settings with a structure
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described for docutils.SettingsSpec.settings_spec.
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Optional positional arguments are names of to-be-excluded settings.
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Keyword arguments are option specification replacements.
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(See the html4strict writer for an example.)
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"""
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settings = list(settings_spec)
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# every third item is a sequence of option tuples
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for i in range(2, len(settings), 3):
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newopts = []
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for opt_spec in settings[i]:
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# opt_spec is ("<help>", [<option strings>], {<keyword args>})
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opt_name = [opt_string[2:].replace('-', '_')
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for opt_string in opt_spec[1]
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if opt_string.startswith('--')
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][0]
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if opt_name in exclude:
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continue
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if opt_name in list(replace.keys()):
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newopts.append(replace[opt_name])
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else:
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newopts.append(opt_spec)
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settings[i] = tuple(newopts)
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return tuple(settings)
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class Values(optparse.Values):
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"""
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Updates list attributes by extension rather than by replacement.
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Works in conjunction with the `OptionParser.lists` instance attribute.
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"""
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def __init__(self, *args, **kwargs):
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optparse.Values.__init__(self, *args, **kwargs)
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if (not hasattr(self, 'record_dependencies')
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or self.record_dependencies is None):
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# Set up dependency list, in case it is needed.
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self.record_dependencies = docutils.utils.DependencyList()
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def update(self, other_dict, option_parser):
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if isinstance(other_dict, Values):
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other_dict = other_dict.__dict__
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other_dict = other_dict.copy()
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for setting in list(option_parser.lists.keys()):
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if (hasattr(self, setting) and setting in other_dict):
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value = getattr(self, setting)
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if value:
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value += other_dict[setting]
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del other_dict[setting]
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self._update_loose(other_dict)
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def copy(self):
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"""Return a shallow copy of `self`."""
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return self.__class__(defaults=self.__dict__)
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class Option(optparse.Option):
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ATTRS = optparse.Option.ATTRS + ['validator', 'overrides']
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def process(self, opt, value, values, parser):
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"""
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Call the validator function on applicable settings and
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evaluate the 'overrides' option.
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Extends `optparse.Option.process`.
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"""
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result = optparse.Option.process(self, opt, value, values, parser)
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setting = self.dest
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if setting:
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if self.validator:
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value = getattr(values, setting)
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try:
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new_value = self.validator(setting, value, parser)
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except Exception as error:
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raise optparse.OptionValueError(
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'Error in option "%s":\n %s'
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% (opt, ErrorString(error)))
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setattr(values, setting, new_value)
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if self.overrides:
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setattr(values, self.overrides, None)
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return result
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class OptionParser(optparse.OptionParser, docutils.SettingsSpec):
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"""
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Parser for command-line and library use. The `settings_spec`
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specification here and in other Docutils components are merged to build
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the set of command-line options and runtime settings for this process.
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Common settings (defined below) and component-specific settings must not
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conflict. Short options are reserved for common settings, and components
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are restrict to using long options.
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"""
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standard_config_files = [
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'/etc/docutils.conf', # system-wide
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'./docutils.conf', # project-specific
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'~/.docutils'] # user-specific
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"""Docutils configuration files, using ConfigParser syntax. Filenames
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will be tilde-expanded later. Later files override earlier ones."""
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threshold_choices = 'info 1 warning 2 error 3 severe 4 none 5'.split()
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"""Possible inputs for for --report and --halt threshold values."""
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thresholds = {'info': 1, 'warning': 2, 'error': 3, 'severe': 4, 'none': 5}
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"""Lookup table for --report and --halt threshold values."""
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booleans={'1': True, 'on': True, 'yes': True, 'true': True,
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'0': False, 'off': False, 'no': False, 'false': False, '': False}
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"""Lookup table for boolean configuration file settings."""
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default_error_encoding = getattr(sys.stderr, 'encoding',
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None) or locale_encoding or 'ascii'
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default_error_encoding_error_handler = 'backslashreplace'
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settings_spec = (
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'General Docutils Options',
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None,
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(('Specify the document title as metadata.',
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['--title'], {}),
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('Include a "Generated by Docutils" credit and link.',
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['--generator', '-g'], {'action': 'store_true',
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'validator': validate_boolean}),
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('Do not include a generator credit.',
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['--no-generator'], {'action': 'store_false', 'dest': 'generator'}),
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('Include the date at the end of the document (UTC).',
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['--date', '-d'], {'action': 'store_const', 'const': '%Y-%m-%d',
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'dest': 'datestamp'}),
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('Include the time & date (UTC).',
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['--time', '-t'], {'action': 'store_const',
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'const': '%Y-%m-%d %H:%M UTC',
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'dest': 'datestamp'}),
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('Do not include a datestamp of any kind.',
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['--no-datestamp'], {'action': 'store_const', 'const': None,
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'dest': 'datestamp'}),
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('Include a "View document source" link.',
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['--source-link', '-s'], {'action': 'store_true',
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'validator': validate_boolean}),
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('Use <URL> for a source link; implies --source-link.',
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['--source-url'], {'metavar': '<URL>'}),
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('Do not include a "View document source" link.',
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['--no-source-link'],
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{'action': 'callback', 'callback': store_multiple,
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'callback_args': ('source_link', 'source_url')}),
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('Link from section headers to TOC entries. (default)',
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['--toc-entry-backlinks'],
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{'dest': 'toc_backlinks', 'action': 'store_const', 'const': 'entry',
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'default': 'entry'}),
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('Link from section headers to the top of the TOC.',
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['--toc-top-backlinks'],
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{'dest': 'toc_backlinks', 'action': 'store_const', 'const': 'top'}),
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('Disable backlinks to the table of contents.',
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['--no-toc-backlinks'],
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{'dest': 'toc_backlinks', 'action': 'store_false'}),
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('Link from footnotes/citations to references. (default)',
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['--footnote-backlinks'],
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{'action': 'store_true', 'default': 1,
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'validator': validate_boolean}),
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('Disable backlinks from footnotes and citations.',
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['--no-footnote-backlinks'],
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{'dest': 'footnote_backlinks', 'action': 'store_false'}),
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('Enable section numbering by Docutils. (default)',
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['--section-numbering'],
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{'action': 'store_true', 'dest': 'sectnum_xform',
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'default': 1, 'validator': validate_boolean}),
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('Disable section numbering by Docutils.',
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['--no-section-numbering'],
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{'action': 'store_false', 'dest': 'sectnum_xform'}),
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('Remove comment elements from the document tree.',
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['--strip-comments'],
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{'action': 'store_true', 'validator': validate_boolean}),
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('Leave comment elements in the document tree. (default)',
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['--leave-comments'],
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{'action': 'store_false', 'dest': 'strip_comments'}),
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('Remove all elements with classes="<class>" from the document tree. '
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'Warning: potentially dangerous; use with caution. '
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'(Multiple-use option.)',
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['--strip-elements-with-class'],
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{'action': 'append', 'dest': 'strip_elements_with_classes',
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'metavar': '<class>', 'validator': validate_strip_class}),
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('Remove all classes="<class>" attributes from elements in the '
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'document tree. Warning: potentially dangerous; use with caution. '
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'(Multiple-use option.)',
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['--strip-class'],
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{'action': 'append', 'dest': 'strip_classes',
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'metavar': '<class>', 'validator': validate_strip_class}),
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('Report system messages at or higher than <level>: "info" or "1", '
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'"warning"/"2" (default), "error"/"3", "severe"/"4", "none"/"5"',
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['--report', '-r'], {'choices': threshold_choices, 'default': 2,
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'dest': 'report_level', 'metavar': '<level>',
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'validator': validate_threshold}),
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('Report all system messages. (Same as "--report=1".)',
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['--verbose', '-v'], {'action': 'store_const', 'const': 1,
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'dest': 'report_level'}),
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('Report no system messages. (Same as "--report=5".)',
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['--quiet', '-q'], {'action': 'store_const', 'const': 5,
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'dest': 'report_level'}),
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('Halt execution at system messages at or above <level>. '
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'Levels as in --report. Default: 4 (severe).',
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['--halt'], {'choices': threshold_choices, 'dest': 'halt_level',
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'default': 4, 'metavar': '<level>',
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'validator': validate_threshold}),
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('Halt at the slightest problem. Same as "--halt=info".',
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['--strict'], {'action': 'store_const', 'const': 1,
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'dest': 'halt_level'}),
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|
('Enable a non-zero exit status for non-halting system messages at '
|
|
'or above <level>. Default: 5 (disabled).',
|
|
['--exit-status'], {'choices': threshold_choices,
|
|
'dest': 'exit_status_level',
|
|
'default': 5, 'metavar': '<level>',
|
|
'validator': validate_threshold}),
|
|
('Enable debug-level system messages and diagnostics.',
|
|
['--debug'], {'action': 'store_true', 'validator': validate_boolean}),
|
|
('Disable debug output. (default)',
|
|
['--no-debug'], {'action': 'store_false', 'dest': 'debug'}),
|
|
('Send the output of system messages to <file>.',
|
|
['--warnings'], {'dest': 'warning_stream', 'metavar': '<file>'}),
|
|
('Enable Python tracebacks when Docutils is halted.',
|
|
['--traceback'], {'action': 'store_true', 'default': None,
|
|
'validator': validate_boolean}),
|
|
('Disable Python tracebacks. (default)',
|
|
['--no-traceback'], {'dest': 'traceback', 'action': 'store_false'}),
|
|
('Specify the encoding and optionally the '
|
|
'error handler of input text. Default: <locale-dependent>:strict.',
|
|
['--input-encoding', '-i'],
|
|
{'metavar': '<name[:handler]>',
|
|
'validator': validate_encoding_and_error_handler}),
|
|
('Specify the error handler for undecodable characters. '
|
|
'Choices: "strict" (default), "ignore", and "replace".',
|
|
['--input-encoding-error-handler'],
|
|
{'default': 'strict', 'validator': validate_encoding_error_handler}),
|
|
('Specify the text encoding and optionally the error handler for '
|
|
'output. Default: UTF-8:strict.',
|
|
['--output-encoding', '-o'],
|
|
{'metavar': '<name[:handler]>', 'default': 'utf-8',
|
|
'validator': validate_encoding_and_error_handler}),
|
|
('Specify error handler for unencodable output characters; '
|
|
'"strict" (default), "ignore", "replace", '
|
|
'"xmlcharrefreplace", "backslashreplace".',
|
|
['--output-encoding-error-handler'],
|
|
{'default': 'strict', 'validator': validate_encoding_error_handler}),
|
|
('Specify text encoding and error handler for error output. '
|
|
'Default: %s:%s.'
|
|
% (default_error_encoding, default_error_encoding_error_handler),
|
|
['--error-encoding', '-e'],
|
|
{'metavar': '<name[:handler]>', 'default': default_error_encoding,
|
|
'validator': validate_encoding_and_error_handler}),
|
|
('Specify the error handler for unencodable characters in '
|
|
'error output. Default: %s.'
|
|
% default_error_encoding_error_handler,
|
|
['--error-encoding-error-handler'],
|
|
{'default': default_error_encoding_error_handler,
|
|
'validator': validate_encoding_error_handler}),
|
|
('Specify the language (as BCP 47 language tag). Default: en.',
|
|
['--language', '-l'], {'dest': 'language_code', 'default': 'en',
|
|
'metavar': '<name>'}),
|
|
('Write output file dependencies to <file>.',
|
|
['--record-dependencies'],
|
|
{'metavar': '<file>', 'validator': validate_dependency_file,
|
|
'default': None}), # default set in Values class
|
|
('Read configuration settings from <file>, if it exists.',
|
|
['--config'], {'metavar': '<file>', 'type': 'string',
|
|
'action': 'callback', 'callback': read_config_file}),
|
|
("Show this program's version number and exit.",
|
|
['--version', '-V'], {'action': 'version'}),
|
|
('Show this help message and exit.',
|
|
['--help', '-h'], {'action': 'help'}),
|
|
# Typically not useful for non-programmatical use:
|
|
(SUPPRESS_HELP, ['--id-prefix'], {'default': ''}),
|
|
(SUPPRESS_HELP, ['--auto-id-prefix'], {'default': 'id'}),
|
|
# Hidden options, for development use only:
|
|
(SUPPRESS_HELP, ['--dump-settings'], {'action': 'store_true'}),
|
|
(SUPPRESS_HELP, ['--dump-internals'], {'action': 'store_true'}),
|
|
(SUPPRESS_HELP, ['--dump-transforms'], {'action': 'store_true'}),
|
|
(SUPPRESS_HELP, ['--dump-pseudo-xml'], {'action': 'store_true'}),
|
|
(SUPPRESS_HELP, ['--expose-internal-attribute'],
|
|
{'action': 'append', 'dest': 'expose_internals',
|
|
'validator': validate_colon_separated_string_list}),
|
|
(SUPPRESS_HELP, ['--strict-visitor'], {'action': 'store_true'}),
|
|
))
|
|
"""Runtime settings and command-line options common to all Docutils front
|
|
ends. Setting specs specific to individual Docutils components are also
|
|
used (see `populate_from_components()`)."""
|
|
|
|
settings_defaults = {'_disable_config': None,
|
|
'_source': None,
|
|
'_destination': None,
|
|
'_config_files': None}
|
|
"""Defaults for settings that don't have command-line option equivalents."""
|
|
|
|
relative_path_settings = ('warning_stream',)
|
|
|
|
config_section = 'general'
|
|
|
|
version_template = ('%%prog (Docutils %s%s, Python %s, on %s)'
|
|
% (docutils.__version__,
|
|
docutils.__version_details__ and
|
|
' [%s]'%docutils.__version_details__ or '',
|
|
sys.version.split()[0], sys.platform))
|
|
"""Default version message."""
|
|
|
|
def __init__(self, components=(), defaults=None, read_config_files=None,
|
|
*args, **kwargs):
|
|
"""
|
|
`components` is a list of Docutils components each containing a
|
|
``.settings_spec`` attribute. `defaults` is a mapping of setting
|
|
default overrides.
|
|
"""
|
|
|
|
self.lists = {}
|
|
"""Set of list-type settings."""
|
|
|
|
self.config_files = []
|
|
"""List of paths of applied configuration files."""
|
|
|
|
optparse.OptionParser.__init__(
|
|
self, option_class=Option, add_help_option=None,
|
|
formatter=optparse.TitledHelpFormatter(width=78),
|
|
*args, **kwargs)
|
|
if not self.version:
|
|
self.version = self.version_template
|
|
# Make an instance copy (it will be modified):
|
|
self.relative_path_settings = list(self.relative_path_settings)
|
|
self.components = (self,) + tuple(components)
|
|
self.populate_from_components(self.components)
|
|
self.set_defaults_from_dict(defaults or {})
|
|
if read_config_files and not self.defaults['_disable_config']:
|
|
try:
|
|
config_settings = self.get_standard_config_settings()
|
|
except ValueError as error:
|
|
self.error(SafeString(error))
|
|
self.set_defaults_from_dict(config_settings.__dict__)
|
|
|
|
def populate_from_components(self, components):
|
|
"""
|
|
For each component, first populate from the `SettingsSpec.settings_spec`
|
|
structure, then from the `SettingsSpec.settings_defaults` dictionary.
|
|
After all components have been processed, check for and populate from
|
|
each component's `SettingsSpec.settings_default_overrides` dictionary.
|
|
"""
|
|
for component in components:
|
|
if component is None:
|
|
continue
|
|
settings_spec = component.settings_spec
|
|
self.relative_path_settings.extend(
|
|
component.relative_path_settings)
|
|
for i in range(0, len(settings_spec), 3):
|
|
title, description, option_spec = settings_spec[i:i+3]
|
|
if title:
|
|
group = optparse.OptionGroup(self, title, description)
|
|
self.add_option_group(group)
|
|
else:
|
|
group = self # single options
|
|
for (help_text, option_strings, kwargs) in option_spec:
|
|
option = group.add_option(help=help_text, *option_strings,
|
|
**kwargs)
|
|
if kwargs.get('action') == 'append':
|
|
self.lists[option.dest] = 1
|
|
if component.settings_defaults:
|
|
self.defaults.update(component.settings_defaults)
|
|
for component in components:
|
|
if component and component.settings_default_overrides:
|
|
self.defaults.update(component.settings_default_overrides)
|
|
|
|
def get_standard_config_files(self):
|
|
"""Return list of config files, from environment or standard."""
|
|
try:
|
|
config_files = os.environ['DOCUTILSCONFIG'].split(os.pathsep)
|
|
except KeyError:
|
|
config_files = self.standard_config_files
|
|
|
|
# If 'HOME' is not set, expandvars() requires the 'pwd' module which is
|
|
# not available under certain environments, for example, within
|
|
# mod_python. The publisher ends up in here, and we need to publish
|
|
# from within mod_python. Therefore we need to avoid expanding when we
|
|
# are in those environments.
|
|
expand = os.path.expanduser
|
|
if 'HOME' not in os.environ:
|
|
try:
|
|
import pwd
|
|
except ImportError:
|
|
expand = lambda x: x
|
|
return [expand(f) for f in config_files if f.strip()]
|
|
|
|
def get_standard_config_settings(self):
|
|
settings = Values()
|
|
for filename in self.get_standard_config_files():
|
|
settings.update(self.get_config_file_settings(filename), self)
|
|
return settings
|
|
|
|
def get_config_file_settings(self, config_file):
|
|
"""Returns a dictionary containing appropriate config file settings."""
|
|
parser = ConfigParser()
|
|
parser.read(config_file, self)
|
|
self.config_files.extend(parser._files)
|
|
base_path = os.path.dirname(config_file)
|
|
applied = {}
|
|
settings = Values()
|
|
for component in self.components:
|
|
if not component:
|
|
continue
|
|
for section in (tuple(component.config_section_dependencies or ())
|
|
+ (component.config_section,)):
|
|
if section in applied:
|
|
continue
|
|
applied[section] = 1
|
|
settings.update(parser.get_section(section), self)
|
|
make_paths_absolute(
|
|
settings.__dict__, self.relative_path_settings, base_path)
|
|
return settings.__dict__
|
|
|
|
def check_values(self, values, args):
|
|
"""Store positional arguments as runtime settings."""
|
|
values._source, values._destination = self.check_args(args)
|
|
make_paths_absolute(values.__dict__, self.relative_path_settings)
|
|
values._config_files = self.config_files
|
|
return values
|
|
|
|
def check_args(self, args):
|
|
source = destination = None
|
|
if args:
|
|
source = args.pop(0)
|
|
if source == '-': # means stdin
|
|
source = None
|
|
if args:
|
|
destination = args.pop(0)
|
|
if destination == '-': # means stdout
|
|
destination = None
|
|
if args:
|
|
self.error('Maximum 2 arguments allowed.')
|
|
if source and source == destination:
|
|
self.error('Do not specify the same file for both source and '
|
|
'destination. It will clobber the source file.')
|
|
return source, destination
|
|
|
|
def set_defaults_from_dict(self, defaults):
|
|
self.defaults.update(defaults)
|
|
|
|
def get_default_values(self):
|
|
"""Needed to get custom `Values` instances."""
|
|
defaults = Values(self.defaults)
|
|
defaults._config_files = self.config_files
|
|
return defaults
|
|
|
|
def get_option_by_dest(self, dest):
|
|
"""
|
|
Get an option by its dest.
|
|
|
|
If you're supplying a dest which is shared by several options,
|
|
it is undefined which option of those is returned.
|
|
|
|
A KeyError is raised if there is no option with the supplied
|
|
dest.
|
|
"""
|
|
for group in self.option_groups + [self]:
|
|
for option in group.option_list:
|
|
if option.dest == dest:
|
|
return option
|
|
raise KeyError('No option with dest == %r.' % dest)
|
|
|
|
|
|
class ConfigParser(CP.RawConfigParser):
|
|
|
|
old_settings = {
|
|
'pep_stylesheet': ('pep_html writer', 'stylesheet'),
|
|
'pep_stylesheet_path': ('pep_html writer', 'stylesheet_path'),
|
|
'pep_template': ('pep_html writer', 'template')}
|
|
"""{old setting: (new section, new setting)} mapping, used by
|
|
`handle_old_config`, to convert settings from the old [options] section."""
|
|
|
|
old_warning = """
|
|
The "[option]" section is deprecated. Support for old-format configuration
|
|
files may be removed in a future Docutils release. Please revise your
|
|
configuration files. See <http://docutils.sf.net/docs/user/config.html>,
|
|
section "Old-Format Configuration Files".
|
|
"""
|
|
|
|
not_utf8_error = """\
|
|
Unable to read configuration file "%s": content not encoded as UTF-8.
|
|
Skipping "%s" configuration file.
|
|
"""
|
|
|
|
def __init__(self, *args, **kwargs):
|
|
CP.RawConfigParser.__init__(self, *args, **kwargs)
|
|
|
|
self._files = []
|
|
"""List of paths of configuration files read."""
|
|
|
|
self._stderr = ErrorOutput()
|
|
"""Wrapper around sys.stderr catching en-/decoding errors"""
|
|
|
|
def read(self, filenames, option_parser):
|
|
if type(filenames) in (str, str):
|
|
filenames = [filenames]
|
|
for filename in filenames:
|
|
try:
|
|
# Config files must be UTF-8-encoded:
|
|
fp = codecs.open(filename, 'r', 'utf-8')
|
|
except IOError:
|
|
continue
|
|
try:
|
|
if sys.version_info < (3,2):
|
|
CP.RawConfigParser.readfp(self, fp, filename)
|
|
else:
|
|
CP.RawConfigParser.read_file(self, fp, filename)
|
|
except UnicodeDecodeError:
|
|
self._stderr.write(self.not_utf8_error % (filename, filename))
|
|
fp.close()
|
|
continue
|
|
fp.close()
|
|
self._files.append(filename)
|
|
if self.has_section('options'):
|
|
self.handle_old_config(filename)
|
|
self.validate_settings(filename, option_parser)
|
|
|
|
def handle_old_config(self, filename):
|
|
warnings.warn_explicit(self.old_warning, ConfigDeprecationWarning,
|
|
filename, 0)
|
|
options = self.get_section('options')
|
|
if not self.has_section('general'):
|
|
self.add_section('general')
|
|
for key, value in list(options.items()):
|
|
if key in self.old_settings:
|
|
section, setting = self.old_settings[key]
|
|
if not self.has_section(section):
|
|
self.add_section(section)
|
|
else:
|
|
section = 'general'
|
|
setting = key
|
|
if not self.has_option(section, setting):
|
|
self.set(section, setting, value)
|
|
self.remove_section('options')
|
|
|
|
def validate_settings(self, filename, option_parser):
|
|
"""
|
|
Call the validator function and implement overrides on all applicable
|
|
settings.
|
|
"""
|
|
for section in self.sections():
|
|
for setting in self.options(section):
|
|
try:
|
|
option = option_parser.get_option_by_dest(setting)
|
|
except KeyError:
|
|
continue
|
|
if option.validator:
|
|
value = self.get(section, setting)
|
|
try:
|
|
new_value = option.validator(
|
|
setting, value, option_parser,
|
|
config_parser=self, config_section=section)
|
|
except Exception as error:
|
|
raise ValueError(
|
|
'Error in config file "%s", section "[%s]":\n'
|
|
' %s\n'
|
|
' %s = %s'
|
|
% (filename, section, ErrorString(error),
|
|
setting, value))
|
|
self.set(section, setting, new_value)
|
|
if option.overrides:
|
|
self.set(section, option.overrides, None)
|
|
|
|
def optionxform(self, optionstr):
|
|
"""
|
|
Transform '-' to '_' so the cmdline form of option names can be used.
|
|
"""
|
|
return optionstr.lower().replace('-', '_')
|
|
|
|
def get_section(self, section):
|
|
"""
|
|
Return a given section as a dictionary (empty if the section
|
|
doesn't exist).
|
|
"""
|
|
section_dict = {}
|
|
if self.has_section(section):
|
|
for option in self.options(section):
|
|
section_dict[option] = self.get(section, option)
|
|
return section_dict
|
|
|
|
|
|
class ConfigDeprecationWarning(DeprecationWarning):
|
|
"""Warning for deprecated configuration file features."""
|