# $Id: __init__.py 6364 2010-07-07 14:56:53Z grubert $
# Author: David Goodger <email@example.com>
# Copyright: This module has been placed in the public domain.
This is the Docutils (Python Documentation Utilities) package.
- __init__.py: Contains component base classes, exception classes, and
Docutils version information.
- core.py: Contains the ``Publisher`` class and ``publish_*()`` convenience
- frontend.py: Runtime settings (command-line interface, configuration files)
processing, for Docutils front-ends.
- io.py: Provides a uniform API for low-level input and output.
- nodes.py: Docutils document tree (doctree) node class library.
- statemachine.py: A finite state machine specialized for
regular-expression-based text filters.
- urischemes.py: Contains a complete mapping of known URI addressing
scheme names to descriptions.
- utils.py: Contains the ``Reporter`` system warning class and miscellaneous
- languages: Language-specific mappings of terms.
- parsers: Syntax-specific input parser modules or packages.
- readers: Context-specific input handlers which understand the data
source and manage a parser.
- transforms: Modules used by readers and writers to modify DPS
- writers: Format-specific output translators.
__docformat__ = 'reStructuredText'
__version__ = '0.8'
"""``major.minor.micro`` version number. The micro number is bumped for API
changes, for new functionality, and for interim project releases. The minor
number is bumped whenever there is a significant project release. The major
number will be bumped when the project is feature-complete, and perhaps if
there is a major change in the design."""
__version_details__ = 'snapshot 2010-09-01, r6395'
"""Extra version details (e.g. 'snapshot 2005-05-29, r3410', 'repository',
'release'), modified automatically & manually."""
class ApplicationError(StandardError): pass
class DataError(ApplicationError): pass
Runtime setting specification base class.
SettingsSpec subclass objects used by `docutils.frontend.OptionParser`.
settings_spec = ()
"""Runtime settings specification. Override in subclasses.
Defines runtime settings and associated command-line options, as used by
`docutils.frontend.OptionParser`. This is a tuple of:
- Option group title (string or `None` which implies no group, just a list
of single options).
- Description (string or `None`).
- A sequence of option tuples. Each consists of:
- Help text (string)
- List of option strings (e.g. ``['-Q', '--quux']``).
- Dictionary of keyword arguments sent to the OptionParser/OptionGroup
Runtime setting names are derived implicitly from long option names
('--a-setting' becomes ``settings.a_setting``) or explicitly from the
'dest' keyword argument.
Most settings will also have a 'validator' keyword & function. The
validator function validates setting values (from configuration files
and command-line option arguments) and converts them to appropriate
types. For example, the ``docutils.frontend.validate_boolean``
function, **required by all boolean settings**, converts true values
('1', 'on', 'yes', and 'true') to 1 and false values ('0', 'off',
'no', 'false', and '') to 0. Validators need only be set once per
setting. See the `docutils.frontend.validate_*` functions.
See the optparse docs for more details.
- More triples of group title, description, options, as many times as
needed. Thus, `settings_spec` tuples can be simply concatenated.
settings_defaults = None
"""A dictionary of defaults for settings not in `settings_spec` (internal
settings, intended to be inaccessible by command-line and config file).
Override in subclasses."""
settings_default_overrides = None
"""A dictionary of auxiliary defaults, to override defaults for settings
defined in other components. Override in subclasses."""
relative_path_settings = ()
"""Settings containing filesystem paths. Override in subclasses.
Settings listed here are to be interpreted relative to the current working
config_section = None
"""The name of the config file section specific to this component
(lowercase, no brackets). Override in subclasses."""
config_section_dependencies = None
"""A list of names of config file sections that are to be applied before
`config_section`, in order (from general to specific). In other words,
the settings in `config_section` are to be overlaid on top of the settings
from these sections. The "general" section is assumed implicitly.
Override in subclasses."""
Runtime transform specification base class.
TransformSpec subclass objects used by `docutils.transforms.Transformer`.
"""Transforms required by this class. Override in subclasses."""
if self.default_transforms != ():
warnings.warn('default_transforms attribute deprecated.\n'
'Use get_transforms() method instead.',
# Deprecated; for compatibility.
default_transforms = ()
unknown_reference_resolvers = ()
"""List of functions to try to resolve unknown references. Unknown
references have a 'refname' attribute which doesn't correspond to any
target in the document. Called when the transforms in
`docutils.tranforms.references` are unable to find a correct target. The
list should contain functions which will try to resolve unknown
references, with the following signature::
'''Returns boolean: true if resolved, false if not.'''
If the function is able to resolve the reference, it should also remove
the 'refname' attribute and mark the node as resolved::
node.resolved = 1
Each function must have a "priority" attribute which will affect the order
the unknown_reference_resolvers are run::
reference_resolver.priority = 100
Override in subclasses."""
class Component(SettingsSpec, TransformSpec):
"""Base class for Docutils components."""
component_type = None
"""Name of the component type ('reader', 'parser', 'writer'). Override in
supported = ()
"""Names for this component. Override in subclasses."""
def supports(self, format):
Is `format` supported by this component?
To be used by transforms to ask the dependent component if it supports
a certain input context or output format.
return format in self.supported