You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
143 lines
4.5 KiB
143 lines
4.5 KiB
# $Id: __init__.py 8239 2018-11-21 21:46:00Z milde $
|
|
# Author: David Goodger <goodger@python.org>
|
|
# Copyright: This module has been placed in the public domain.
|
|
|
|
"""
|
|
This package contains Docutils Writer modules.
|
|
"""
|
|
|
|
__docformat__ = 'reStructuredText'
|
|
|
|
import os.path
|
|
import sys
|
|
|
|
import docutils
|
|
from docutils import languages, Component
|
|
from docutils.transforms import universal
|
|
|
|
|
|
class Writer(Component):
|
|
|
|
"""
|
|
Abstract base class for docutils Writers.
|
|
|
|
Each writer module or package must export a subclass also called 'Writer'.
|
|
Each writer must support all standard node types listed in
|
|
`docutils.nodes.node_class_names`.
|
|
|
|
The `write()` method is the main entry point.
|
|
"""
|
|
|
|
component_type = 'writer'
|
|
config_section = 'writers'
|
|
|
|
def get_transforms(self):
|
|
return Component.get_transforms(self) + [
|
|
universal.Messages,
|
|
universal.FilterMessages,
|
|
universal.StripClassesAndElements,]
|
|
|
|
document = None
|
|
"""The document to write (Docutils doctree); set by `write`."""
|
|
|
|
output = None
|
|
"""Final translated form of `document` (Unicode string for text, binary
|
|
string for other forms); set by `translate`."""
|
|
|
|
language = None
|
|
"""Language module for the document; set by `write`."""
|
|
|
|
destination = None
|
|
"""`docutils.io` Output object; where to write the document.
|
|
Set by `write`."""
|
|
|
|
def __init__(self):
|
|
|
|
# Used by HTML and LaTeX writer for output fragments:
|
|
self.parts = {}
|
|
"""Mapping of document part names to fragments of `self.output`.
|
|
Values are Unicode strings; encoding is up to the client. The 'whole'
|
|
key should contain the entire document output.
|
|
"""
|
|
|
|
def write(self, document, destination):
|
|
"""
|
|
Process a document into its final form.
|
|
|
|
Translate `document` (a Docutils document tree) into the Writer's
|
|
native format, and write it out to its `destination` (a
|
|
`docutils.io.Output` subclass object).
|
|
|
|
Normally not overridden or extended in subclasses.
|
|
"""
|
|
self.document = document
|
|
self.language = languages.get_language(
|
|
document.settings.language_code,
|
|
document.reporter)
|
|
self.destination = destination
|
|
self.translate()
|
|
output = self.destination.write(self.output)
|
|
return output
|
|
|
|
def translate(self):
|
|
"""
|
|
Do final translation of `self.document` into `self.output`. Called
|
|
from `write`. Override in subclasses.
|
|
|
|
Usually done with a `docutils.nodes.NodeVisitor` subclass, in
|
|
combination with a call to `docutils.nodes.Node.walk()` or
|
|
`docutils.nodes.Node.walkabout()`. The ``NodeVisitor`` subclass must
|
|
support all standard elements (listed in
|
|
`docutils.nodes.node_class_names`) and possibly non-standard elements
|
|
used by the current Reader as well.
|
|
"""
|
|
raise NotImplementedError('subclass must override this method')
|
|
|
|
def assemble_parts(self):
|
|
"""Assemble the `self.parts` dictionary. Extend in subclasses."""
|
|
self.parts['whole'] = self.output
|
|
self.parts['encoding'] = self.document.settings.output_encoding
|
|
self.parts['version'] = docutils.__version__
|
|
|
|
|
|
class UnfilteredWriter(Writer):
|
|
|
|
"""
|
|
A writer that passes the document tree on unchanged (e.g. a
|
|
serializer.)
|
|
|
|
Documents written by UnfilteredWriters are typically reused at a
|
|
later date using a subclass of `readers.ReReader`.
|
|
"""
|
|
|
|
def get_transforms(self):
|
|
# Do not add any transforms. When the document is reused
|
|
# later, the then-used writer will add the appropriate
|
|
# transforms.
|
|
return Component.get_transforms(self)
|
|
|
|
|
|
_writer_aliases = {
|
|
'html': 'html4css1', # may change to html5 some day
|
|
'html4': 'html4css1',
|
|
'html5': 'html5_polyglot',
|
|
'latex': 'latex2e',
|
|
'pprint': 'pseudoxml',
|
|
'pformat': 'pseudoxml',
|
|
'pdf': 'rlpdf',
|
|
's5': 's5_html',
|
|
'xelatex': 'xetex',
|
|
'xhtml': 'html5_polyglot',
|
|
'xhtml10': 'html4css1',
|
|
'xml': 'docutils_xml'}
|
|
|
|
def get_writer_class(writer_name):
|
|
"""Return the Writer class from the `writer_name` module."""
|
|
writer_name = writer_name.lower()
|
|
if writer_name in _writer_aliases:
|
|
writer_name = _writer_aliases[writer_name]
|
|
try:
|
|
module = __import__(writer_name, globals(), locals(), level=1)
|
|
except ImportError:
|
|
module = __import__(writer_name, globals(), locals(), level=0)
|
|
return module.Writer
|
|
|