Source code for sphinx.builders.latex

"""
    sphinx.builders.latex
    ~~~~~~~~~~~~~~~~~~~~~

    LaTeX builder.

    :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
    :license: BSD, see LICENSE for details.
"""

import os
import warnings
from os import path
from typing import Any, Dict, Iterable, List, Tuple, Union

from docutils.frontend import OptionParser
from docutils.nodes import Node

import sphinx.builders.latex.nodes  # NOQA  # Workaround: import this before writer to avoid ImportError
from sphinx import package_dir, addnodes, highlighting
from sphinx.application import Sphinx
from sphinx.builders import Builder
from sphinx.builders.latex.constants import ADDITIONAL_SETTINGS, DEFAULT_SETTINGS, SHORTHANDOFF
from sphinx.builders.latex.theming import Theme, ThemeFactory
from sphinx.builders.latex.util import ExtBabel
from sphinx.config import Config, ENUM
from sphinx.deprecation import RemovedInSphinx40Warning
from sphinx.environment.adapters.asset import ImageAdapter
from sphinx.errors import NoUri, SphinxError
from sphinx.locale import _, __
from sphinx.util import texescape, logging, progress_message, status_iterator
from sphinx.util.console import bold, darkgreen  # type: ignore
from sphinx.util.docutils import SphinxFileOutput, new_document
from sphinx.util.fileutil import copy_asset_file
from sphinx.util.i18n import format_date
from sphinx.util.nodes import inline_all_toctrees
from sphinx.util.osutil import SEP, make_filename_from_project
from sphinx.util.template import LaTeXRenderer
from sphinx.writers.latex import LaTeXWriter, LaTeXTranslator

# load docutils.nodes after loading sphinx.builders.latex.nodes
from docutils import nodes  # NOQA


XINDY_LANG_OPTIONS = {
    # language codes from docutils.writers.latex2e.Babel
    # ! xindy language names may differ from those in use by LaTeX/babel
    # ! xindy does not support all Latin scripts as recognized by LaTeX/babel
    # ! not all xindy-supported languages appear in Babel.language_codes
    # cd /usr/local/texlive/2018/texmf-dist/xindy/modules/lang
    # find . -name '*utf8.xdy'
    # LATIN
    'sq': '-L albanian -C utf8 ',
    'hr': '-L croatian -C utf8 ',
    'cs': '-L czech -C utf8 ',
    'da': '-L danish -C utf8 ',
    'nl': '-L dutch -C ij-as-ij-utf8 ',
    'en': '-L english -C utf8 ',
    'eo': '-L esperanto -C utf8 ',
    'et': '-L estonian -C utf8 ',
    'fi': '-L finnish -C utf8 ',
    'fr': '-L french -C utf8 ',
    'de': '-L german -C din5007-utf8 ',
    'is': '-L icelandic -C utf8 ',
    'it': '-L italian -C utf8 ',
    'la': '-L latin -C utf8 ',
    'lv': '-L latvian -C utf8 ',
    'lt': '-L lithuanian -C utf8 ',
    'dsb': '-L lower-sorbian -C utf8 ',
    'ds': '-L lower-sorbian -C utf8 ',   # trick, no conflict
    'nb': '-L norwegian -C utf8 ',
    'no': '-L norwegian -C utf8 ',       # and what about nynorsk?
    'pl': '-L polish -C utf8 ',
    'pt': '-L portuguese -C utf8 ',
    'ro': '-L romanian -C utf8 ',
    'sk': '-L slovak -C small-utf8 ',    # there is also slovak-large
    'sl': '-L slovenian -C utf8 ',
    'es': '-L spanish -C modern-utf8 ',  # there is also spanish-traditional
    'sv': '-L swedish -C utf8 ',
    'tr': '-L turkish -C utf8 ',
    'hsb': '-L upper-sorbian -C utf8 ',
    'hs': '-L upper-sorbian -C utf8 ',   # trick, no conflict
    'vi': '-L vietnamese -C utf8 ',
    # CYRILLIC
    # for usage with pdflatex, needs also cyrLICRutf8.xdy module
    'be': '-L belarusian -C utf8 ',
    'bg': '-L bulgarian -C utf8 ',
    'mk': '-L macedonian -C utf8 ',
    'mn': '-L mongolian -C cyrillic-utf8 ',
    'ru': '-L russian -C utf8 ',
    'sr': '-L serbian -C utf8 ',
    'sh-cyrl': '-L serbian -C utf8 ',
    'sh': '-L serbian -C utf8 ',         # trick, no conflict
    'uk': '-L ukrainian -C utf8 ',
    # GREEK
    # can work only with xelatex/lualatex, not supported by texindy+pdflatex
    'el': '-L greek -C utf8 ',
    # FIXME, not compatible with [:2] slice but does Sphinx support Greek ?
    'el-polyton': '-L greek -C polytonic-utf8 ',
}

XINDY_CYRILLIC_SCRIPTS = [
    'be', 'bg', 'mk', 'mn', 'ru', 'sr', 'sh', 'uk',
]

logger = logging.getLogger(__name__)


[docs]class LaTeXBuilder(Builder): """ Builds LaTeX output to create PDF. """ name = 'latex' format = 'latex' epilog = __('The LaTeX files are in %(outdir)s.') if os.name == 'posix': epilog += __("\nRun 'make' in that directory to run these through " "(pdf)latex\n" "(use `make latexpdf' here to do that automatically).") supported_image_types = ['application/pdf', 'image/png', 'image/jpeg'] supported_remote_images = False default_translator_class = LaTeXTranslator def init(self) -> None: self.babel = None # type: ExtBabel self.context = {} # type: Dict[str, Any] self.docnames = [] # type: Iterable[str] self.document_data = [] # type: List[Tuple[str, str, str, str, str, bool]] self.themes = ThemeFactory(self.app) self.usepackages = self.app.registry.latex_packages texescape.init() self.init_context() self.init_babel() self.init_multilingual() def get_outdated_docs(self) -> Union[str, List[str]]: return 'all documents' # for now def get_target_uri(self, docname: str, typ: str = None) -> str: if docname not in self.docnames: raise NoUri(docname, typ) else: return '%' + docname def get_relative_uri(self, from_: str, to: str, typ: str = None) -> str: # ignore source path return self.get_target_uri(to, typ) def init_document_data(self) -> None: preliminary_document_data = [list(x) for x in self.config.latex_documents] if not preliminary_document_data: logger.warning(__('no "latex_documents" config value found; no documents ' 'will be written')) return # assign subdirs to titles self.titles = [] # type: List[Tuple[str, str]] for entry in preliminary_document_data: docname = entry[0] if docname not in self.env.all_docs: logger.warning(__('"latex_documents" config value references unknown ' 'document %s'), docname) continue self.document_data.append(entry) # type: ignore if docname.endswith(SEP + 'index'): docname = docname[:-5] self.titles.append((docname, entry[2])) def init_context(self) -> None: self.context = DEFAULT_SETTINGS.copy() # Add special settings for latex_engine self.context.update(ADDITIONAL_SETTINGS.get(self.config.latex_engine, {})) # Add special settings for (latex_engine, language_code) if self.config.language: key = (self.config.latex_engine, self.config.language[:2]) self.context.update(ADDITIONAL_SETTINGS.get(key, {})) # Apply extension settings to context self.context['packages'] = self.usepackages # Apply user settings to context self.context.update(self.config.latex_elements) self.context['release'] = self.config.release self.context['use_xindy'] = self.config.latex_use_xindy if self.config.today: self.context['date'] = self.config.today else: self.context['date'] = format_date(self.config.today_fmt or _('%b %d, %Y'), language=self.config.language) if self.config.latex_logo: self.context['logofilename'] = path.basename(self.config.latex_logo) # for compatibilities self.context['indexname'] = _('Index') if self.config.release: # Show the release label only if release value exists self.context.setdefault('releasename', _('Release')) def init_babel(self) -> None: self.babel = ExtBabel(self.config.language, not self.context['babel']) if self.config.language and not self.babel.is_supported_language(): # emit warning if specified language is invalid # (only emitting, nothing changed to processing) logger.warning(__('no Babel option known for language %r'), self.config.language) def init_multilingual(self) -> None: if self.context['latex_engine'] == 'pdflatex': if not self.babel.uses_cyrillic(): if 'X2' in self.context['fontenc']: self.context['substitutefont'] = '\\usepackage{substitutefont}' self.context['textcyrillic'] = '\\usepackage[Xtwo]{sphinxcyrillic}' elif 'T2A' in self.context['fontenc']: self.context['substitutefont'] = '\\usepackage{substitutefont}' self.context['textcyrillic'] = '\\usepackage[TtwoA]{sphinxcyrillic}' if 'LGR' in self.context['fontenc']: self.context['substitutefont'] = '\\usepackage{substitutefont}' else: self.context['textgreek'] = '' # 'babel' key is public and user setting must be obeyed if self.context['babel']: self.context['classoptions'] += ',' + self.babel.get_language() # this branch is not taken for xelatex/lualatex if default settings self.context['multilingual'] = self.context['babel'] if self.config.language: self.context['shorthandoff'] = SHORTHANDOFF # Times fonts don't work with Cyrillic languages if self.babel.uses_cyrillic() and 'fontpkg' not in self.config.latex_elements: self.context['fontpkg'] = '' elif self.context['polyglossia']: self.context['classoptions'] += ',' + self.babel.get_language() options = self.babel.get_mainlanguage_options() if options: language = r'\setmainlanguage[%s]{%s}' % (options, self.babel.get_language()) else: language = r'\setmainlanguage{%s}' % self.babel.get_language() self.context['multilingual'] = '%s\n%s' % (self.context['polyglossia'], language) def write_stylesheet(self) -> None: highlighter = highlighting.PygmentsBridge('latex', self.config.pygments_style) stylesheet = path.join(self.outdir, 'sphinxhighlight.sty') with open(stylesheet, 'w') as f: f.write('\\NeedsTeXFormat{LaTeX2e}[1995/12/01]\n') f.write('\\ProvidesPackage{sphinxhighlight}' '[2016/05/29 stylesheet for highlighting with pygments]\n\n') f.write(highlighter.get_stylesheet()) def write(self, *ignored: Any) -> None: docwriter = LaTeXWriter(self) docsettings = OptionParser( defaults=self.env.settings, components=(docwriter,), read_config_files=True).get_default_values() # type: Any patch_settings(docsettings) self.init_document_data() self.write_stylesheet() for entry in self.document_data: docname, targetname, title, author, themename = entry[:5] theme = self.themes.get(themename) toctree_only = False if len(entry) > 5: toctree_only = entry[5] destination = SphinxFileOutput(destination_path=path.join(self.outdir, targetname), encoding='utf-8', overwrite_if_changed=True) with progress_message(__("processing %s") % targetname): doctree = self.env.get_doctree(docname) toctree = next(iter(doctree.traverse(addnodes.toctree)), None) if toctree and toctree.get('maxdepth') > 0: tocdepth = toctree.get('maxdepth') else: tocdepth = None doctree = self.assemble_doctree( docname, toctree_only, appendices=(self.config.latex_appendices if theme.name != 'howto' else [])) doctree['docclass'] = theme.docclass doctree['contentsname'] = self.get_contentsname(docname) doctree['tocdepth'] = tocdepth self.post_process_images(doctree) self.update_doc_context(title, author, theme) with progress_message(__("writing")): docsettings._author = author docsettings._title = title docsettings._contentsname = doctree['contentsname'] docsettings._docname = docname docsettings._docclass = theme.name doctree.settings = docsettings docwriter.theme = theme docwriter.write(doctree, destination) def get_contentsname(self, indexfile: str) -> str: tree = self.env.get_doctree(indexfile) contentsname = None for toctree in tree.traverse(addnodes.toctree): if 'caption' in toctree: contentsname = toctree['caption'] break return contentsname def update_doc_context(self, title: str, author: str, theme: Theme) -> None: self.context['title'] = title self.context['author'] = author self.context['docclass'] = theme.docclass self.context['wrapperclass'] = theme.wrapperclass def assemble_doctree(self, indexfile: str, toctree_only: bool, appendices: List[str]) -> nodes.document: # NOQA self.docnames = set([indexfile] + appendices) logger.info(darkgreen(indexfile) + " ", nonl=True) tree = self.env.get_doctree(indexfile) tree['docname'] = indexfile if toctree_only: # extract toctree nodes from the tree and put them in a # fresh document new_tree = new_document('<latex output>') new_sect = nodes.section() new_sect += nodes.title('<Set title in conf.py>', '<Set title in conf.py>') new_tree += new_sect for node in tree.traverse(addnodes.toctree): new_sect += node tree = new_tree largetree = inline_all_toctrees(self, self.docnames, indexfile, tree, darkgreen, [indexfile]) largetree['docname'] = indexfile for docname in appendices: appendix = self.env.get_doctree(docname) appendix['docname'] = docname largetree.append(appendix) logger.info('') logger.info(__("resolving references...")) self.env.resolve_references(largetree, indexfile, self) # resolve :ref:s to distant tex files -- we can't add a cross-reference, # but append the document name for pendingnode in largetree.traverse(addnodes.pending_xref): docname = pendingnode['refdocname'] sectname = pendingnode['refsectname'] newnodes = [nodes.emphasis(sectname, sectname)] # type: List[Node] for subdir, title in self.titles: if docname.startswith(subdir): newnodes.append(nodes.Text(_(' (in '), _(' (in '))) newnodes.append(nodes.emphasis(title, title)) newnodes.append(nodes.Text(')', ')')) break else: pass pendingnode.replace_self(newnodes) return largetree def apply_transforms(self, doctree: nodes.document) -> None: warnings.warn('LaTeXBuilder.apply_transforms() is deprecated.', RemovedInSphinx40Warning) def finish(self) -> None: self.copy_image_files() self.write_message_catalog() self.copy_support_files() if self.config.latex_additional_files: self.copy_latex_additional_files() @progress_message(__('copying TeX support files')) def copy_support_files(self) -> None: """copy TeX support files from texinputs.""" # configure usage of xindy (impacts Makefile and latexmkrc) # FIXME: convert this rather to a confval with suitable default # according to language ? but would require extra documentation if self.config.language: xindy_lang_option = \ XINDY_LANG_OPTIONS.get(self.config.language[:2], '-L general -C utf8 ') xindy_cyrillic = self.config.language[:2] in XINDY_CYRILLIC_SCRIPTS else: xindy_lang_option = '-L english -C utf8 ' xindy_cyrillic = False context = { 'latex_engine': self.config.latex_engine, 'xindy_use': self.config.latex_use_xindy, 'xindy_lang_option': xindy_lang_option, 'xindy_cyrillic': xindy_cyrillic, } logger.info(bold(__('copying TeX support files...'))) staticdirname = path.join(package_dir, 'texinputs') for filename in os.listdir(staticdirname): if not filename.startswith('.'): copy_asset_file(path.join(staticdirname, filename), self.outdir, context=context) # use pre-1.6.x Makefile for make latexpdf on Windows if os.name == 'nt': staticdirname = path.join(package_dir, 'texinputs_win') copy_asset_file(path.join(staticdirname, 'Makefile_t'), self.outdir, context=context) @progress_message(__('copying additional files')) def copy_latex_additional_files(self) -> None: for filename in self.config.latex_additional_files: logger.info(' ' + filename, nonl=True) copy_asset_file(path.join(self.confdir, filename), self.outdir) def copy_image_files(self) -> None: if self.images: stringify_func = ImageAdapter(self.app.env).get_original_image_uri for src in status_iterator(self.images, __('copying images... '), "brown", len(self.images), self.app.verbosity, stringify_func=stringify_func): dest = self.images[src] try: copy_asset_file(path.join(self.srcdir, src), path.join(self.outdir, dest)) except Exception as err: logger.warning(__('cannot copy image file %r: %s'), path.join(self.srcdir, src), err) if self.config.latex_logo: if not path.isfile(path.join(self.confdir, self.config.latex_logo)): raise SphinxError(__('logo file %r does not exist') % self.config.latex_logo) else: copy_asset_file(path.join(self.confdir, self.config.latex_logo), self.outdir) def write_message_catalog(self) -> None: formats = self.config.numfig_format context = { 'addtocaptions': r'\@iden', 'figurename': formats.get('figure', '').split('%s', 1), 'tablename': formats.get('table', '').split('%s', 1), 'literalblockname': formats.get('code-block', '').split('%s', 1) } if self.context['babel'] or self.context['polyglossia']: context['addtocaptions'] = r'\addto\captions%s' % self.babel.get_language() filename = path.join(package_dir, 'templates', 'latex', 'sphinxmessages.sty_t') copy_asset_file(filename, self.outdir, context=context, renderer=LaTeXRenderer())
def patch_settings(settings: Any) -> Any: """Make settings object to show deprecation messages.""" class Values(type(settings)): # type: ignore @property def author(self) -> str: warnings.warn('settings.author is deprecated', RemovedInSphinx40Warning, stacklevel=2) return self._author @property def title(self) -> str: warnings.warn('settings.title is deprecated', RemovedInSphinx40Warning, stacklevel=2) return self._title @property def contentsname(self) -> str: warnings.warn('settings.contentsname is deprecated', RemovedInSphinx40Warning, stacklevel=2) return self._contentsname @property def docname(self) -> str: warnings.warn('settings.docname is deprecated', RemovedInSphinx40Warning, stacklevel=2) return self._docname @property def docclass(self) -> str: warnings.warn('settings.docclass is deprecated', RemovedInSphinx40Warning, stacklevel=2) return self._docclass # dynamic subclassing settings.__class__ = Values def validate_config_values(app: Sphinx, config: Config) -> None: for key in list(config.latex_elements): if key not in DEFAULT_SETTINGS: msg = __("Unknown configure key: latex_elements[%r], ignored.") logger.warning(msg % (key,)) config.latex_elements.pop(key) def default_latex_engine(config: Config) -> str: """ Better default latex_engine settings for specific languages. """ if config.language == 'ja': return 'platex' elif (config.language or '').startswith('zh'): return 'xelatex' elif config.language == 'el': return 'xelatex' else: return 'pdflatex' def default_latex_docclass(config: Config) -> Dict[str, str]: """ Better default latex_docclass settings for specific languages. """ if config.language == 'ja': if config.latex_engine == 'uplatex': return {'manual': 'ujbook', 'howto': 'ujreport'} else: return {'manual': 'jsbook', 'howto': 'jreport'} else: return {} def default_latex_use_xindy(config: Config) -> bool: """ Better default latex_use_xindy settings for specific engines. """ return config.latex_engine in {'xelatex', 'lualatex'} def default_latex_documents(config: Config) -> List[Tuple[str, str, str, str, str]]: """ Better default latex_documents settings. """ project = texescape.escape(config.project, config.latex_engine) author = texescape.escape(config.author, config.latex_engine) return [(config.master_doc, make_filename_from_project(config.project) + '.tex', texescape.escape_abbr(project), texescape.escape_abbr(author), config.latex_theme)] def setup(app: Sphinx) -> Dict[str, Any]: app.setup_extension('sphinx.builders.latex.transforms') app.add_builder(LaTeXBuilder) app.connect('config-inited', validate_config_values) app.add_config_value('latex_engine', default_latex_engine, None, ENUM('pdflatex', 'xelatex', 'lualatex', 'platex', 'uplatex')) app.add_config_value('latex_documents', default_latex_documents, None) app.add_config_value('latex_logo', None, None, [str]) app.add_config_value('latex_appendices', [], None) app.add_config_value('latex_use_latex_multicolumn', False, None) app.add_config_value('latex_use_xindy', default_latex_use_xindy, None, [bool]) app.add_config_value('latex_toplevel_sectioning', None, None, ENUM(None, 'part', 'chapter', 'section')) app.add_config_value('latex_domain_indices', True, None, [list]) app.add_config_value('latex_show_urls', 'no', None) app.add_config_value('latex_show_pagerefs', False, None) app.add_config_value('latex_elements', {}, None) app.add_config_value('latex_additional_files', [], None) app.add_config_value('latex_theme', 'manual', None, [str]) app.add_config_value('latex_theme_path', [], None, [list]) app.add_config_value('latex_docclass', default_latex_docclass, None) return { 'version': 'builtin', 'parallel_read_safe': True, 'parallel_write_safe': True, }