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# $Id: __init__.py 8147 2017-08-03 09:01:16Z grubert $
# Author: David Goodger <goodger@python.org>
# Copyright: This module has been placed in the public domain.
"""
This is the Docutils (Python Documentation Utilities) package.
Package Structure
=================
Modules:
- __init__.py: Contains component base classes, exception classes, and
Docutils version information.
- core.py: Contains the ``Publisher`` class and ``publish_*()`` convenience
functions.
- 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.
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.
- utils: Contains the ``Reporter`` system warning class and miscellaneous
utilities used by readers, writers, and transforms.
utils/urischemes.py: Contains a complete mapping of known URI addressing
scheme names to descriptions.
- utils/math: Contains functions for conversion of mathematical notation
between different formats (LaTeX, MathML, text, ...).
- writers: Format-specific output translators.
"""
import sys
__docformat__ = 'reStructuredText'
__version__ = '0.14'
"""Docutils version identifier (complies with PEP 440)::
major.minor[.micro][releaselevel[serial]][.dev]
* The major number will be bumped when the project is feature-complete, and
later if there is a major change in the design or API.
* The minor number is bumped whenever there are new features.
* The micro number is bumped for bug-fix releases. Omitted if micro=0.
* The releaselevel identifier is used for pre-releases, one of 'a' (alpha),
'b' (beta), or 'rc' (release candidate). Omitted for final releases.
* The serial release number identifies prereleases; omitted if 0.
* The '.dev' suffix indicates active development, not a release, before the
version indicated.
For version comparison operations, use `__version_info__`
rather than parsing the text of `__version__`.
"""
# workaround for Python < 2.6:
__version_info__ = (0, 14, 0, 'final', 0, True)
# To add in Docutils 0.15, replacing the line above:
"""
from collections import namedtuple
VersionInfo = namedtuple(
'VersionInfo', 'major minor micro releaselevel serial release')
__version_info__ = VersionInfo(
major=0,
minor=15,
micro=0,
releaselevel='alpha', # development status:
# one of 'alpha', 'beta', 'candidate', 'final'
serial=0, # pre-release number (0 for final releases)
release=False # True for official releases and pre-releases
)
Comprehensive version information tuple. Can be used to test for a
minimally required version, e.g. ::
if __version_info__ >= (0, 13, 0, 'candidate', 2, True)
or in a self-documenting way like ::
if __version_info__ >= docutils.VersionInfo(
major=0, minor=13, micro=0,
releaselevel='candidate', serial=2, release=True)
"""
__version_details__ = ''
"""Optional extra version details (e.g. 'snapshot 2005-05-29, r3410').
(For development and release status see `__version_info__`.)
"""
class ApplicationError(Exception):
# Workaround:
# In Python < 2.6, unicode(<exception instance>) calls `str` on the
# arg and therefore, e.g., unicode(StandardError(u'\u234')) fails
# with UnicodeDecodeError.
if sys.version_info < (2,6):
def __unicode__(self):
return ', '.join(self.args)
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.
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
``add_option`` method.
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
directory."""
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."""
class TransformSpec:
"""
Runtime transform specification base class.
TransformSpec subclass objects used by `docutils.transforms.Transformer`.
"""
def get_transforms(self):
"""Transforms required by this class. Override in subclasses."""
if self.default_transforms != ():
import warnings
warnings.warn('default_transforms attribute deprecated.\n'
'Use get_transforms() method instead.',
DeprecationWarning)
return list(self.default_transforms)
return []
# 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::
def reference_resolver(node):
'''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::
del node['refname']
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
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
import os
_debian_package = 10
if _debian_package:
def _datadir(path):
dirname = os.path.dirname(path)
prefix = os.path.join(os.path.dirname(__file__), '') # _datadir
assert path.startswith(prefix), "%r doesn't start with %r" % (path, prefix)
suffix = dirname[len(prefix):]
return os.path.join('/usr/share/docutils/', suffix)
else:
def _datadir(path):
return os.path.dirname(path)
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