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#
# A pair of directives for inserting content that will only appear in
# either html or latex.
#
from docutils.nodes import Body, Element
from docutils.writers.html4css1 import HTMLTranslator
from sphinx.latexwriter import LaTeXTranslator
from docutils.parsers.rst import directives
class html_only(Body, Element):
pass
class latex_only(Body, Element):
pass
def run(content, node_class, state, content_offset):
text = '\n'.join(content)
node = node_class(text)
state.nested_parse(content, content_offset, node)
return [node]
try:
from docutils.parsers.rst import Directive
except ImportError:
from docutils.parsers.rst.directives import _directives
def html_only_directive(name, arguments, options, content, lineno,
content_offset, block_text, state, state_machine):
return run(content, html_only, state, content_offset)
def latex_only_directive(name, arguments, options, content, lineno,
content_offset, block_text, state, state_machine):
return run(content, latex_only, state, content_offset)
for func in (html_only_directive, latex_only_directive):
func.content = 1
func.options = {}
func.arguments = None
_directives['htmlonly'] = html_only_directive
_directives['latexonly'] = latex_only_directive
else:
class OnlyDirective(Directive):
has_content = True
required_arguments = 0
optional_arguments = 0
final_argument_whitespace = True
option_spec = {}
def run(self):
self.assert_has_content()
return run(self.content, self.node_class,
self.state, self.content_offset)
class HtmlOnlyDirective(OnlyDirective):
node_class = html_only
class LatexOnlyDirective(OnlyDirective):
node_class = latex_only
directives.register_directive('htmlonly', HtmlOnlyDirective)
directives.register_directive('latexonly', LatexOnlyDirective)
def setup(app):
app.add_node(html_only)
app.add_node(latex_only)
# Add visit/depart methods to HTML-Translator:
def visit_perform(self, node):
pass
def depart_perform(self, node):
pass
def visit_ignore(self, node):
node.children = []
def depart_ignore(self, node):
node.children = []
HTMLTranslator.visit_html_only = visit_perform
HTMLTranslator.depart_html_only = depart_perform
HTMLTranslator.visit_latex_only = visit_ignore
HTMLTranslator.depart_latex_only = depart_ignore
LaTeXTranslator.visit_html_only = visit_ignore
LaTeXTranslator.depart_html_only = depart_ignore
LaTeXTranslator.visit_latex_only = visit_perform
LaTeXTranslator.depart_latex_only = depart_perform
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