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# $Id: __init__.py 9282 2022-11-28 23:55:46Z milde $ # Author: David Goodger # Maintainer: docutils-develop@lists.sourceforge.net # Copyright: This module has been placed in the public domain. """ Simple HyperText Markup Language document tree Writer. The output conforms to the XHTML version 1.0 Transitional DTD (*almost* strict). The output contains a minimum of formatting information. The cascading style sheet "html4css1.css" is required for proper viewing with a modern graphical browser. """ __docformat__ = 'reStructuredText' import os.path import re from docutils import frontend, nodes, writers from docutils.writers import _html_base from docutils.writers._html_base import PIL, url2pathname class Writer(writers._html_base.Writer): supported = ('html', 'html4', 'html4css1', 'xhtml', 'xhtml10') """Formats this writer supports.""" default_stylesheets = ['html4css1.css'] default_stylesheet_dirs = ['.', os.path.abspath(os.path.dirname(__file__)), os.path.abspath(os.path.join( os.path.dirname(os.path.dirname(__file__)), 'html5_polyglot')) # for math.css ] default_template = os.path.join( os.path.dirname(os.path.abspath(__file__)), 'template.txt') # use a copy of the parent spec with some modifications settings_spec = frontend.filter_settings_spec( writers._html_base.Writer.settings_spec, template=( 'Template file. (UTF-8 encoded, default: "%s")' % default_template, ['--template'], {'default': default_template, 'metavar': '<file>'}), stylesheet_path=( 'Comma separated list of stylesheet paths. ' 'Relative paths are expanded if a matching file is found in ' 'the --stylesheet-dirs. With --link-stylesheet, ' 'the path is rewritten relative to the output HTML file. ' '(default: "%s")' % ','.join(default_stylesheets), ['--stylesheet-path'], {'metavar': '<file[,file,...]>', 'overrides': 'stylesheet', 'validator': frontend.validate_comma_separated_list, 'default': default_stylesheets}), stylesheet_dirs=( 'Comma-separated list of directories where stylesheets are found. ' 'Used by --stylesheet-path when expanding relative path ' 'arguments. (default: "%s")' % ','.join(default_stylesheet_dirs), ['--stylesheet-dirs'], {'metavar': '<dir[,dir,...]>', 'validator': frontend.validate_comma_separated_list, 'default': default_stylesheet_dirs}), initial_header_level=( 'Specify the initial header level. Does not affect document ' 'title & subtitle (see --no-doc-title). (default: 1 for "<h1>")', ['--initial-header-level'], {'choices': '1 2 3 4 5 6'.split(), 'default': '1', 'metavar': '<level>'}), xml_declaration=( 'Prepend an XML declaration (default). ', ['--xml-declaration'], {'default': True, 'action': 'store_true', 'validator': frontend.validate_boolean}), ) settings_spec = settings_spec + ( 'HTML4 Writer Options', '', (('Specify the maximum width (in characters) for one-column field ' 'names. Longer field names will span an entire row of the table ' 'used to render the field list. Default is 14 characters. ' 'Use 0 for "no limit".', ['--field-name-limit'], {'default': 14, 'metavar': '<level>', 'validator': frontend.validate_nonnegative_int}), ('Specify the maximum width (in characters) for options in option ' 'lists. Longer options will span an entire row of the table used ' 'to render the option list. Default is 14 characters. ' 'Use 0 for "no limit".', ['--option-limit'], {'default': 14, 'metavar': '<level>', 'validator': frontend.validate_nonnegative_int}), ) ) config_section = 'html4css1 writer' def __init__(self): self.parts = {} self.translator_class = HTMLTranslator class HTMLTranslator(writers._html_base.HTMLTranslator): """ The html4css1 writer has been optimized to produce visually compact lists (less vertical whitespace). HTML's mixed content models allow list items to contain "<li><p>body elements</p></li>" or "<li>just text</li>" or even "<li>text<p>and body elements</p>combined</li>", each with different effects. It would be best to stick with strict body elements in list items, but they affect vertical spacing in older browsers (although they really shouldn't). The html5_polyglot writer solves this using CSS2. Here is an outline of the optimization: - Check for and omit <p> tags in "simple" lists: list items contain either a single paragraph, a nested simple list, or a paragraph followed by a nested simple list. This means that this list can be compact: - Item 1. - Item 2. But this list cannot be compact: - Item 1. This second paragraph forces space between list items. - Item 2. - In non-list contexts, omit <p> tags on a paragraph if that paragraph is the only child of its parent (footnotes & citations are allowed a label first). - Regardless of the above, in definitions, table cells, field bodies, option descriptions, and list items, mark the first child with 'class="first"' and the last child with 'class="last"'. The stylesheet sets the margins (top & bottom respectively) to 0 for these elements. The ``no_compact_lists`` setting (``--no-compact-lists`` command-line option) disables list whitespace optimization. """ # The following definitions are required for display in browsers limited # to CSS1 or backwards compatible behaviour of the writer: doctype = ( '<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"' ' "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">\n') content_type = ('<meta http-equiv="Content-Type"' ' content="text/html; charset=%s" />\n') content_type_mathml = ('<meta http-equiv="Content-Type"' ' content="application/xhtml+xml; charset=%s" />\n') # encode also non-breaking space special_characters = _html_base.HTMLTranslator.special_characters.copy() special_characters[0xa0] = ' ' # use character reference for dash (not valid in HTML5) attribution_formats = {'dash': ('—', ''), 'parentheses': ('(', ')'), 'parens': ('(', ')'), 'none': ('', '')} # ersatz for first/last pseudo-classes missing in CSS1 def set_first_last(self, node): self.set_class_on_child(node, 'first', 0) self.set_class_on_child(node, 'last', -1) # add newline after opening tag def visit_address(self, node): self.visit_docinfo_item(node, 'address', meta=False) self.body.append(self.starttag(node, 'pre', CLASS='address')) def depart_address(self, node): self.body.append('\n</pre>\n') self.depart_docinfo_item() # ersatz for first/last pseudo-classes def visit_admonition(self, node): node['classes'].insert(0, 'admonition') self.body.append(self.starttag(node, 'div')) self.set_first_last(node) def depart_admonition(self, node=None): self.body.append('</div>\n') # author, authors: use <br> instead of paragraphs def visit_author(self, node): if isinstance(node.parent, nodes.authors): if self.author_in_authors: self.body.append('\n<br />') else: self.visit_docinfo_item(node, 'author') def depart_author(self, node): if isinstance(node.parent, nodes.authors): self.author_in_authors = True else: self.depart_docinfo_item() def visit_authors(self, node): self.visit_docinfo_item(node, 'authors') self.author_in_authors = False # initialize def depart_authors(self, node): self.depart_docinfo_item() # use "width" argument instead of "style: 'width'": def visit_colspec(self, node): self.colspecs.append(node) # "stubs" list is an attribute of the tgroup element: node.parent.stubs.append(node.attributes.get('stub')) def depart_colspec(self, node): # write out <colgroup> when all colspecs are processed if isinstance(node.next_node(descend=False, siblings=True), nodes.colspec): return if ('colwidths-auto' in node.parent.parent['classes'] or ('colwidths-auto' in self.settings.table_style and 'colwidths-given' not in node.parent.parent['classes'])): return total_width = sum(node['colwidth'] for node in self.colspecs) self.body.append(self.starttag(node, 'colgroup')) for node in self.colspecs: colwidth = int(node['colwidth'] * 100.0 / total_width + 0.5) self.body.append(self.emptytag(node, 'col', width='%i%%' % colwidth)) self.body.append('</colgroup>\n') # Compact lists: # exclude definition lists and field lists (non-compact by default) def is_compactable(self, node): return ('compact' in node['classes'] or (self.settings.compact_lists and 'open' not in node['classes'] and (self.compact_simple or 'contents' in node.parent['classes'] # TODO: self.in_contents or self.check_simple_list(node)))) # citations: Use table for bibliographic references. def visit_citation(self, node): self.body.append(self.starttag(node, 'table', CLASS='docutils citation', frame="void", rules="none")) self.body.append('<colgroup><col class="label" /><col /></colgroup>\n' '<tbody valign="top">\n' '<tr>') self.footnote_backrefs(node) def depart_citation(self, node): self.body.append('</td></tr>\n' '</tbody>\n</table>\n') def visit_citation_reference(self, node): href = '#' if 'refid' in node: href += node['refid'] elif 'refname' in node: href += self.document.nameids[node['refname']] self.body.append(self.starttag(node, 'a', suffix='[', href=href, classes=['citation-reference'])) def depart_citation_reference(self, node): self.body.append(']</a>') # insert classifier-delimiter (not required with CSS2) def visit_classifier(self, node): self.body.append(' <span class="classifier-delimiter">:</span> ') self.body.append(self.starttag(node, 'span', '', CLASS='classifier')) def depart_classifier(self, node): self.body.append('</span>') # ersatz for first/last pseudo-classes def visit_compound(self, node): self.body.append(self.starttag(node, 'div', CLASS='compound')) if len(node) > 1: node[0]['classes'].append('compound-first') node[-1]['classes'].append('compound-last') for child in node[1:-1]: child['classes'].append('compound-middle') def depart_compound(self, node): self.body.append('</div>\n') # ersatz for first/last pseudo-classes, no special handling of "details" def visit_definition(self, node): self.body.append('</dt>\n') self.body.append(self.starttag(node, 'dd', '')) self.set_first_last(node) def depart_definition(self, node): self.body.append('</dd>\n') # don't add "simple" class value, no special handling of "details" def visit_definition_list(self, node): self.body.append(self.starttag(node, 'dl', CLASS='docutils')) def depart_definition_list(self, node): self.body.append('</dl>\n') # no special handling of "details" def visit_definition_list_item(self, node): pass def depart_definition_list_item(self, node): pass # use a table for description lists def visit_description(self, node): self.body.append(self.starttag(node, 'td', '')) self.set_first_last(node) def depart_description(self, node): self.body.append('</td>') # use table for docinfo def visit_docinfo(self, node): self.context.append(len(self.body)) self.body.append(self.starttag(node, 'table', CLASS='docinfo', frame="void", rules="none")) self.body.append('<col class="docinfo-name" />\n' '<col class="docinfo-content" />\n' '<tbody valign="top">\n') self.in_docinfo = True def depart_docinfo(self, node): self.body.append('</tbody>\n</table>\n') self.in_docinfo = False start = self.context.pop() self.docinfo = self.body[start:] self.body = [] def visit_docinfo_item(self, node, name, meta=True): if meta: meta_tag = '<meta name="%s" content="%s" />\n' \ % (name, self.attval(node.astext())) self.meta.append(meta_tag) self.body.append(self.starttag(node, 'tr', '')) self.body.append('<th class="docinfo-name">%s:</th>\n<td>' % self.language.labels[name]) if len(node): if isinstance(node[0], nodes.Element): node[0]['classes'].append('first') if isinstance(node[-1], nodes.Element): node[-1]['classes'].append('last') def depart_docinfo_item(self): self.body.append('</td></tr>\n') # add newline after opening tag def visit_doctest_block(self, node): self.body.append(self.starttag(node, 'pre', CLASS='doctest-block')) def depart_doctest_block(self, node): self.body.append('\n</pre>\n') # insert an NBSP into empty cells, ersatz for first/last def visit_entry(self, node): writers._html_base.HTMLTranslator.visit_entry(self, node) if len(node) == 0: # empty cell self.body.append(' ') self.set_first_last(node) def depart_entry(self, node): self.body.append(self.context.pop()) # ersatz for first/last pseudo-classes def visit_enumerated_list(self, node): """ The 'start' attribute does not conform to HTML 4.01's strict.dtd, but cannot be emulated in CSS1 (HTML 5 reincludes it). """ atts = {} if 'start' in node: atts['start'] = node['start'] if 'enumtype' in node: atts['class'] = node['enumtype'] # @@@ To do: prefix, suffix. How? Change prefix/suffix to a # single "format" attribute? Use CSS2? old_compact_simple = self.compact_simple self.context.append((self.compact_simple, self.compact_p)) self.compact_p = None self.compact_simple = self.is_compactable(node) if self.compact_simple and not old_compact_simple: atts['class'] = (atts.get('class', '') + ' simple').strip() self.body.append(self.starttag(node, 'ol', **atts)) def depart_enumerated_list(self, node): self.compact_simple, self.compact_p = self.context.pop() self.body.append('</ol>\n') # use table for field-list: def visit_field(self, node): self.body.append(self.starttag(node, 'tr', '', CLASS='field')) def depart_field(self, node): self.body.append('</tr>\n') def visit_field_body(self, node): self.body.append(self.starttag(node, 'td', '', CLASS='field-body')) self.set_class_on_child(node, 'first', 0) field = node.parent if (self.compact_field_list or isinstance(field.parent, nodes.docinfo) or field.parent.index(field) == len(field.parent) - 1): # If we are in a compact list, the docinfo, or if this is # the last field of the field list, do not add vertical # space after last element. self.set_class_on_child(node, 'last', -1) def depart_field_body(self, node): self.body.append('</td>\n') def visit_field_list(self, node): self.context.append((self.compact_field_list, self.compact_p)) self.compact_p = None if 'compact' in node['classes']: self.compact_field_list = True elif (self.settings.compact_field_lists and 'open' not in node['classes']): self.compact_field_list = True if self.compact_field_list: for field in node: field_body = field[-1] assert isinstance(field_body, nodes.field_body) children = [n for n in field_body if not isinstance(n, nodes.Invisible)] if not (len(children) == 0 or len(children) == 1 and isinstance(children[0], (nodes.paragraph, nodes.line_block))): self.compact_field_list = False break self.body.append(self.starttag(node, 'table', frame='void', rules='none', CLASS='docutils field-list')) self.body.append('<col class="field-name" />\n' '<col class="field-body" />\n' '<tbody valign="top">\n') def depart_field_list(self, node): self.body.append('</tbody>\n</table>\n') self.compact_field_list, self.compact_p = self.context.pop() def visit_field_name(self, node): atts = {} if self.in_docinfo: atts['class'] = 'docinfo-name' else: atts['class'] = 'field-name' if (self.settings.field_name_limit and len(node.astext()) > self.settings.field_name_limit): atts['colspan'] = 2 self.context.append('</tr>\n' + self.starttag(node.parent, 'tr', '', CLASS='field') + '<td> </td>') else: self.context.append('') self.body.append(self.starttag(node, 'th', '', **atts)) def depart_field_name(self, node): self.body.append(':</th>') self.body.append(self.context.pop()) # use table for footnote text def visit_footnote(self, node): self.body.append(self.starttag(node, 'table', CLASS='docutils footnote', frame="void", rules="none")) self.body.append('<colgroup><col class="label" /><col /></colgroup>\n' '<tbody valign="top">\n' '<tr>') self.footnote_backrefs(node) def footnote_backrefs(self, node): backlinks = [] backrefs = node['backrefs'] if self.settings.footnote_backlinks and backrefs: if len(backrefs) == 1: self.context.append('') self.context.append('</a>') self.context.append('<a class="fn-backref" href="#%s">' % backrefs[0]) else: for (i, backref) in enumerate(backrefs, 1): backlinks.append('<a class="fn-backref" href="#%s">%s</a>' % (backref, i)) self.context.append('<em>(%s)</em> ' % ', '.join(backlinks)) self.context += ['', ''] else: self.context.append('') self.context += ['', ''] # If the node does not only consist of a label. if len(node) > 1: # If there are preceding backlinks, we do not set class # 'first', because we need to retain the top-margin. if not backlinks: node[1]['classes'].append('first') node[-1]['classes'].append('last') def depart_footnote(self, node): self.body.append('</td></tr>\n' '</tbody>\n</table>\n') # insert markers in text (pseudo-classes are not supported in CSS1): def visit_footnote_reference(self, node): href = '#' + node['refid'] format = self.settings.footnote_references if format == 'brackets': suffix = '[' self.context.append(']') else: assert format == 'superscript' suffix = '<sup>' self.context.append('</sup>') self.body.append(self.starttag(node, 'a', suffix, CLASS='footnote-reference', href=href)) def depart_footnote_reference(self, node): self.body.append(self.context.pop() + '</a>') # just pass on generated text def visit_generated(self, node): pass # Backwards-compatibility implementation: # * Do not use <video>, # * don't embed images, # * use <object> instead of <img> for SVG. # (SVG not supported by IE up to version 8, # html4css1 strives for IE6 compatibility.) object_image_types = {'.svg': 'image/svg+xml', '.swf': 'application/x-shockwave-flash'} def visit_image(self, node): atts = {} uri = node['uri'] ext = os.path.splitext(uri)[1].lower() if ext in self.object_image_types: atts['data'] = uri atts['type'] = self.object_image_types[ext] else: atts['src'] = uri atts['alt'] = node.get('alt', uri) # image size if 'width' in node: atts['width'] = node['width'] if 'height' in node: atts['height'] = node['height'] if 'scale' in node: if (PIL and ('width' not in node or 'height' not in node) and self.settings.file_insertion_enabled): imagepath = url2pathname(uri) try: with PIL.Image.open(imagepath) as img: img_size = img.size except (OSError, UnicodeEncodeError): pass # TODO: warn/info? else: self.settings.record_dependencies.add( imagepath.replace('\\', '/')) if 'width' not in atts: atts['width'] = '%dpx' % img_size[0] if 'height' not in atts: atts['height'] = '%dpx' % img_size[1] for att_name in 'width', 'height': if att_name in atts: match = re.match(r'([0-9.]+)(\S*)$', atts[att_name]) assert match atts[att_name] = '%s%s' % ( float(match.group(1)) * (float(node['scale']) / 100), match.group(2)) style = [] for att_name in 'width', 'height': if att_name in atts: if re.match(r'^[0-9.]+$', atts[att_name]): # Interpret unitless values as pixels. atts[att_name] += 'px' style.append('%s: %s;' % (att_name, atts[att_name])) del atts[att_name] if style: atts['style'] = ' '.join(style) if (isinstance(node.parent, nodes.TextElement) or (isinstance(node.parent, nodes.reference) and not isinstance(node.parent.parent, nodes.TextElement))): # Inline context or surrounded by <a>...</a>. suffix = '' else: suffix = '\n' if 'align' in node: atts['class'] = 'align-%s' % node['align'] if ext in self.object_image_types: # do NOT use an empty tag: incorrect rendering in browsers self.body.append(self.starttag(node, 'object', '', **atts) + node.get('alt', uri) + '</object>' + suffix) else: self.body.append(self.emptytag(node, 'img', suffix, **atts)) def depart_image(self, node): pass # use table for footnote text, # context added in footnote_backrefs. def visit_label(self, node): self.body.append(self.starttag(node, 'td', '%s[' % self.context.pop(), CLASS='label')) def depart_label(self, node): self.body.append(f']{self.context.pop()}</td><td>{self.context.pop()}') # ersatz for first/last pseudo-classes def visit_list_item(self, node): self.body.append(self.starttag(node, 'li', '')) if len(node): node[0]['classes'].append('first') def depart_list_item(self, node): self.body.append('</li>\n') # use <tt> (not supported by HTML5), # cater for limited styling options in CSS1 using hard-coded NBSPs def visit_literal(self, node): # special case: "code" role classes = node['classes'] if 'code' in classes: # filter 'code' from class arguments node['classes'] = [cls for cls in classes if cls != 'code'] self.body.append(self.starttag(node, 'code', '')) return self.body.append( self.starttag(node, 'tt', '', CLASS='docutils literal')) text = node.astext() for token in self.words_and_spaces.findall(text): if token.strip(): # Protect text like "--an-option" and the regular expression # ``[+]?(\d+(\.\d*)?|\.\d+)`` from bad line wrapping if self.in_word_wrap_point.search(token): self.body.append('<span class="pre">%s</span>' % self.encode(token)) else: self.body.append(self.encode(token)) elif token in ('\n', ' '): # Allow breaks at whitespace: self.body.append(token) else: # Protect runs of multiple spaces; the last space can wrap: self.body.append(' ' * (len(token) - 1) + ' ') self.body.append('</tt>') # Content already processed: raise nodes.SkipNode def depart_literal(self, node): # skipped unless literal element is from "code" role: self.body.append('</code>') # add newline after wrapper tags, don't use <code> for code def visit_literal_block(self, node): self.body.append(self.starttag(node, 'pre', CLASS='literal-block')) def depart_literal_block(self, node): self.body.append('\n</pre>\n') # use table for option list def visit_option_group(self, node): atts = {} if (self.settings.option_limit and len(node.astext()) > self.settings.option_limit): atts['colspan'] = 2 self.context.append('</tr>\n<tr><td> </td>') else: self.context.append('') self.body.append( self.starttag(node, 'td', CLASS='option-group', **atts)) self.body.append('<kbd>') self.context.append(0) # count number of options def depart_option_group(self, node): self.context.pop() self.body.append('</kbd></td>\n') self.body.append(self.context.pop()) def visit_option_list(self, node): self.body.append( self.starttag(node, 'table', CLASS='docutils option-list', frame="void", rules="none")) self.body.append('<col class="option" />\n' '<col class="description" />\n' '<tbody valign="top">\n') def depart_option_list(self, node): self.body.append('</tbody>\n</table>\n') def visit_option_list_item(self, node): self.body.append(self.starttag(node, 'tr', '')) def depart_option_list_item(self, node): self.body.append('</tr>\n') # Omit <p> tags to produce visually compact lists (less vertical # whitespace) as CSS styling requires CSS2. def should_be_compact_paragraph(self, node): """ Determine if the <p> tags around paragraph ``node`` can be omitted. """ if (isinstance(node.parent, nodes.document) or isinstance(node.parent, nodes.compound)): # Never compact paragraphs in document or compound. return False for key, value in node.attlist(): if (node.is_not_default(key) and not (key == 'classes' and value in ([], ['first'], ['last'], ['first', 'last']))): # Attribute which needs to survive. return False first = isinstance(node.parent[0], nodes.label) # skip label for child in node.parent.children[first:]: # only first paragraph can be compact if isinstance(child, nodes.Invisible): continue if child is node: break return False parent_length = len([n for n in node.parent if not isinstance( n, (nodes.Invisible, nodes.label))]) if (self.compact_simple or self.compact_field_list or self.compact_p and parent_length == 1): return True return False def visit_paragraph(self, node): if self.should_be_compact_paragraph(node): self.context.append('') else: self.body.append(self.starttag(node, 'p', '')) self.context.append('</p>\n') def depart_paragraph(self, node): self.body.append(self.context.pop()) # ersatz for first/last pseudo-classes def visit_sidebar(self, node): self.body.append( self.starttag(node, 'div', CLASS='sidebar')) self.set_first_last(node) self.in_sidebar = True def depart_sidebar(self, node): self.body.append('</div>\n') self.in_sidebar = False # <sub> not allowed in <pre> def visit_subscript(self, node): if isinstance(node.parent, nodes.literal_block): self.body.append(self.starttag(node, 'span', '', CLASS='subscript')) else: self.body.append(self.starttag(node, 'sub', '')) def depart_subscript(self, node): if isinstance(node.parent, nodes.literal_block): self.body.append('</span>') else: self.body.append('</sub>') # Use <h*> for subtitles (deprecated in HTML 5) def visit_subtitle(self, node): if isinstance(node.parent, nodes.sidebar): self.body.append(self.starttag(node, 'p', '', CLASS='sidebar-subtitle')) self.context.append('</p>\n') elif isinstance(node.parent, nodes.document): self.body.append(self.starttag(node, 'h2', '', CLASS='subtitle')) self.context.append('</h2>\n') self.in_document_title = len(self.body) elif isinstance(node.parent, nodes.section): tag = 'h%s' % (self.section_level + self.initial_header_level - 1) self.body.append( self.starttag(node, tag, '', CLASS='section-subtitle') + self.starttag({}, 'span', '', CLASS='section-subtitle')) self.context.append('</span></%s>\n' % tag) def depart_subtitle(self, node): self.body.append(self.context.pop()) if self.in_document_title: self.subtitle = self.body[self.in_document_title:-1] self.in_document_title = 0 self.body_pre_docinfo.extend(self.body) self.html_subtitle.extend(self.body) del self.body[:] # <sup> not allowed in <pre> in HTML 4 def visit_superscript(self, node): if isinstance(node.parent, nodes.literal_block): self.body.append(self.starttag(node, 'span', '', CLASS='superscript')) else: self.body.append(self.starttag(node, 'sup', '')) def depart_superscript(self, node): if isinstance(node.parent, nodes.literal_block): self.body.append('</span>') else: self.body.append('</sup>') # <tt> element deprecated in HTML 5 def visit_system_message(self, node): self.body.append(self.starttag(node, 'div', CLASS='system-message')) self.body.append('<p class="system-message-title">') backref_text = '' if len(node['backrefs']): backrefs = node['backrefs'] if len(backrefs) == 1: backref_text = ('; <em><a href="#%s">backlink</a></em>' % backrefs[0]) else: i = 1 backlinks = [] for backref in backrefs: backlinks.append('<a href="#%s">%s</a>' % (backref, i)) i += 1 backref_text = ('; <em>backlinks: %s</em>' % ', '.join(backlinks)) if node.hasattr('line'): line = ', line %s' % node['line'] else: line = '' self.body.append('System Message: %s/%s ' '(<tt class="docutils">%s</tt>%s)%s</p>\n' % (node['type'], node['level'], self.encode(node['source']), line, backref_text)) def depart_system_message(self, node): self.body.append('</div>\n') # "hard coded" border setting def visit_table(self, node): self.context.append(self.compact_p) self.compact_p = True atts = {'border': 1} classes = ['docutils', self.settings.table_style] if 'align' in node: classes.append('align-%s' % node['align']) if 'width' in node: atts['style'] = 'width: %s' % node['width'] self.body.append( self.starttag(node, 'table', CLASS=' '.join(classes), **atts)) def depart_table(self, node): self.compact_p = self.context.pop() self.body.append('</table>\n') # hard-coded vertical alignment def visit_tbody(self, node): self.body.append(self.starttag(node, 'tbody', valign='top')) def depart_tbody(self, node): self.body.append('</tbody>\n') # no special handling of "details" in definition list def visit_term(self, node): self.body.append(self.starttag(node, 'dt', '', classes=node.parent['classes'], ids=node.parent['ids'])) def depart_term(self, node): pass # hard-coded vertical alignment def visit_thead(self, node): self.body.append(self.starttag(node, 'thead', valign='bottom')) def depart_thead(self, node): self.body.append('</thead>\n') # auxiliary method, called by visit_title() # "with-subtitle" class, no ARIA roles def section_title_tags(self, node): classes = [] h_level = self.section_level + self.initial_header_level - 1 if (len(node.parent) >= 2 and isinstance(node.parent[1], nodes.subtitle)): classes.append('with-subtitle') if h_level > 6: classes.append('h%i' % h_level) tagname = 'h%i' % min(h_level, 6) start_tag = self.starttag(node, tagname, '', classes=classes) if node.hasattr('refid'): atts = {} atts['class'] = 'toc-backref' atts['href'] = '#' + node['refid'] start_tag += self.starttag({}, 'a', '', **atts) close_tag = '</a></%s>\n' % tagname else: close_tag = '</%s>\n' % tagname return start_tag, close_tag class SimpleListChecker(writers._html_base.SimpleListChecker): """ Raise `nodes.NodeFound` if non-simple list item is encountered. Here "simple" means a list item containing nothing other than a single paragraph, a simple list, or a paragraph followed by a simple list. """ def visit_list_item(self, node): children = [] for child in node.children: if not isinstance(child, nodes.Invisible): children.append(child) if (children and isinstance(children[0], nodes.paragraph) and (isinstance(children[-1], nodes.bullet_list) or isinstance(children[-1], nodes.enumerated_list))): children.pop() if len(children) <= 1: return else: raise nodes.NodeFound # def visit_bullet_list(self, node): # pass # def visit_enumerated_list(self, node): # pass def visit_paragraph(self, node): raise nodes.SkipNode def visit_definition_list(self, node): raise nodes.NodeFound def visit_docinfo(self, node): raise nodes.NodeFound