"""LaTeX builder."""
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 addnodes, highlighting, package_dir
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 ENUM, Config
from sphinx.deprecation import RemovedInSphinx50Warning
from sphinx.environment.adapters.asset import ImageAdapter
from sphinx.errors import NoUri, SphinxError
from sphinx.locale import _, __
from sphinx.util import logging, progress_message, status_iterator, texescape
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 LaTeXTranslator, LaTeXWriter
# load docutils.nodes after loading sphinx.builders.latex.nodes
from docutils import nodes # isort:skip
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-ij-as-ij -C 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-din5007 -C 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-small -C utf8 ', # there is also slovak-large
'sl': '-L slovenian -C utf8 ',
'es': '-L spanish-modern -C 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-cyrillic -C 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-polytonic -C utf8 ',
}
XINDY_CYRILLIC_SCRIPTS = [
'be', 'bg', 'mk', 'mn', 'ru', 'sr', 'sh', 'uk',
]
logger = logging.getLogger(__name__)
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: ExtBabel = None
self.context: Dict[str, Any] = {}
self.docnames: Iterable[str] = {}
self.document_data: List[Tuple[str, str, str, str, str, bool]] = []
self.themes = ThemeFactory(self.app)
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: 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 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 update_context(self) -> None:
"""Update template variables for .tex file just before writing."""
# Apply extension settings to context
registry = self.app.registry
self.context['packages'] = registry.latex_packages
self.context['packages_after_hyperref'] = registry.latex_packages_after_hyperref
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]'
'{sphinxpackagecyrillic}')
elif 'T2A' in self.context['fontenc']:
self.context['substitutefont'] = '\\usepackage{substitutefont}'
self.context['textcyrillic'] = ('\\usepackage[TtwoA]'
'{sphinxpackagecyrillic}')
if 'LGR' in self.context['fontenc']:
self.context['substitutefont'] = '\\usepackage{substitutefont}'
else:
self.context['textgreek'] = ''
if self.context['substitutefont'] == '':
self.context['fontsubstitution'] = ''
# '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')
f.write('% Its contents depend on pygments_style configuration variable.\n\n')
f.write(highlighter.get_stylesheet())
def write(self, *ignored: Any) -> None:
docwriter = LaTeXWriter(self)
docsettings: Any = OptionParser(
defaults=self.env.settings,
components=(docwriter,),
read_config_files=True).get_default_values()
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(doctree.findall(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)
self.update_context()
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.findall(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['papersize'] = theme.papersize
self.context['pointsize'] = theme.pointsize
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.findall(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.findall(addnodes.pending_xref):
docname = pendingnode['refdocname']
sectname = pendingnode['refsectname']
newnodes: List[Node] = [nodes.emphasis(sectname, sectname)]
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 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())
@property
def usepackages(self) -> List[Tuple[str, str]]:
warnings.warn('LaTeXBuilder.usepackages is deprecated.',
RemovedInSphinx50Warning, stacklevel=2)
return self.app.registry.latex_packages
@property
def usepackages_after_hyperref(self) -> List[Tuple[str, str]]:
warnings.warn('LaTeXBuilder.usepackages_after_hyperref is deprecated.',
RemovedInSphinx50Warning, stacklevel=2)
return self.app.registry.latex_packages_after_hyperref
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 validate_latex_theme_options(app: Sphinx, config: Config) -> None:
for key in list(config.latex_theme_options):
if key not in Theme.UPDATABLE_KEYS:
msg = __("Unknown theme option: latex_theme_options[%r], ignored.")
logger.warning(msg % (key,))
config.latex_theme_options.pop(key)
def install_packages_for_ja(app: Sphinx) -> None:
"""Install packages for Japanese."""
if app.config.language == 'ja' and app.config.latex_engine in ('platex', 'uplatex'):
app.add_latex_package('pxjahyper', after_hyperref=True)
def default_latex_engine(config: Config) -> str:
""" Better default latex_engine settings for specific languages. """
if config.language == 'ja':
return 'uplatex'
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.root_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, priority=800)
app.connect('config-inited', validate_latex_theme_options, priority=800)
app.connect('builder-inited', install_packages_for_ja)
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_options', {}, None)
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,
}