python-peps/docutils/__init__.py

131 lines
3.9 KiB
Python

# Author: David Goodger
# Contact: goodger@users.sourceforge.net
# Revision: $Revision$
# Date: $Date$
# Copyright: This module has been placed in the public domain.
"""
This is the Docutils (Python Documentation Utilities) package.
Package Structure
=================
Modules:
- __init__.py: Contains the package docstring only (this text).
- core.py: Contains the ``Publisher`` class and ``publish()`` convenience
function.
- frontend.py: Command-line and common 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.
- optik.py: Option parsing and command-line help; from Greg Ward's
http://optik.sf.net/ project, included for convenience.
- roman.py: Conversion to and from Roman numerals. Courtesy of Mark
Pilgrim (http://diveintopython.org/).
- 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
utilities.
Subpackages:
- 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
doctrees.
- writers: Format-specific output translators.
"""
__docformat__ = 'reStructuredText'
__version__ = '0.2.8'
"""``major.minor.micro`` version number. The micro number is bumped any time
there's a change in the API incompatible with one of the front ends. The
minor number is bumped whenever there is a project release. The major number
will be bumped when the project is complete, and perhaps if there is a major
change in the design."""
class ApplicationError(StandardError): pass
class DataError(ApplicationError): pass
class SettingsSpec:
"""
Runtime setting specification base class.
SettingsSpec subclass objects used by `docutils.frontend.OptionParser`.
"""
settings_spec = ()
"""Runtime settings specification. Override in subclasses.
Specifies runtime settings and associated command-line options, as used by
`docutils.frontend.OptionParser`. This tuple contains one or more sets of
option group title, description, and a list/tuple of tuples: ``('help
text', [list of option strings], {keyword arguments})``. Group title
and/or description may be `None`; no group title implies no group, just a
list of single options. Runtime settings names are derived implicitly
from long option names ("--a-setting" becomes ``settings.a_setting``) or
explicitly from the "destination" keyword argument."""
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
directory."""
class TransformSpec:
"""
Runtime transform specification base class.
TransformSpec subclass objects used by `docutils.transforms.Transformer`.
"""
default_transforms = ()
"""Transforms required by this class. Override in subclasses."""
class Component(SettingsSpec, TransformSpec):
"""Base class for Docutils components."""
component_type = None
"""Override in subclasses."""
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