Ejemplo n.º 1
0
class StandaloneHTMLBuilder(Builder):
    """
    Builds standalone HTML docs.
    """
    name = 'html'
    format = 'html'
    copysource = True
    allow_parallel = True
    out_suffix = '.html'
    link_suffix = '.html'  # defaults to matching out_suffix
    indexer_format = js_index
    indexer_dumps_unicode = True
    supported_image_types = ['image/svg+xml', 'image/png',
                             'image/gif', 'image/jpeg']
    searchindex_filename = 'searchindex.js'
    add_permalinks = True
    embedded = False  # for things like HTML help or Qt help: suppresses sidebar
    search = True  # for things like HTML help and Apple help: suppress search

    # This is a class attribute because it is mutated by Sphinx.add_javascript.
    script_files = ['_static/jquery.js', '_static/underscore.js',
                    '_static/doctools.js']
    # Dito for this one.
    css_files = []

    default_sidebars = ['localtoc.html', 'relations.html',
                        'sourcelink.html', 'searchbox.html']

    # cached publisher object for snippets
    _publisher = None

    def init(self):
        # a hash of all config values that, if changed, cause a full rebuild
        self.config_hash = ''
        self.tags_hash = ''
        # basename of images directory
        self.imagedir = '_images'
        # section numbers for headings in the currently visited document
        self.secnumbers = {}
        # currently written docname
        self.current_docname = None

        self.init_templates()
        self.init_highlighter()
        self.init_translator_class()
        if self.config.html_file_suffix is not None:
            self.out_suffix = self.config.html_file_suffix

        if self.config.html_link_suffix is not None:
            self.link_suffix = self.config.html_link_suffix
        else:
            self.link_suffix = self.out_suffix

        if self.config.language is not None:
            if self._get_translations_js():
                self.script_files.append('_static/translations.js')

    def _get_translations_js(self):
        candidates = [path.join(package_dir, 'locale', self.config.language,
                                'LC_MESSAGES', 'sphinx.js'),
                      path.join(sys.prefix, 'share/sphinx/locale',
                                self.config.language, 'sphinx.js')] + \
                     [path.join(dir, self.config.language,
                                'LC_MESSAGES', 'sphinx.js')
                      for dir in self.config.locale_dirs]
        for jsfile in candidates:
            if path.isfile(jsfile):
                return jsfile
        return None

    def get_theme_config(self):
        return self.config.html_theme, self.config.html_theme_options

    def init_templates(self):
        Theme.init_themes(self.confdir, self.config.html_theme_path,
                          warn=self.warn)
        themename, themeoptions = self.get_theme_config()
        self.theme = Theme(themename, warn=self.warn)
        self.theme_options = themeoptions.copy()
        self.create_template_bridge()
        self.templates.init(self, self.theme)

    def init_highlighter(self):
        # determine Pygments style and create the highlighter
        if self.config.pygments_style is not None:
            style = self.config.pygments_style
        elif self.theme:
            style = self.theme.get_confstr('theme', 'pygments_style', 'none')
        else:
            style = 'sphinx'
        self.highlighter = PygmentsBridge('html', style,
                                          self.config.trim_doctest_flags)

    def init_translator_class(self):
        if self.translator_class is not None:
            pass
        elif self.config.html_translator_class:
            self.translator_class = self.app.import_object(
                self.config.html_translator_class,
                'html_translator_class setting')
        elif self.config.html_use_smartypants:
            self.translator_class = SmartyPantsHTMLTranslator
        else:
            self.translator_class = HTMLTranslator

    def get_outdated_docs(self):
        cfgdict = dict((name, self.config[name])
                       for (name, desc) in iteritems(self.config.values)
                       if desc[1] == 'html')
        self.config_hash = get_stable_hash(cfgdict)
        self.tags_hash = get_stable_hash(sorted(self.tags))
        old_config_hash = old_tags_hash = ''
        try:
            fp = open(path.join(self.outdir, '.buildinfo'))
            try:
                version = fp.readline()
                if version.rstrip() != '# Sphinx build info version 1':
                    raise ValueError
                fp.readline()  # skip commentary
                cfg, old_config_hash = fp.readline().strip().split(': ')
                if cfg != 'config':
                    raise ValueError
                tag, old_tags_hash = fp.readline().strip().split(': ')
                if tag != 'tags':
                    raise ValueError
            finally:
                fp.close()
        except ValueError:
            self.warn('unsupported build info format in %r, building all' %
                      path.join(self.outdir, '.buildinfo'))
        except Exception:
            pass
        if old_config_hash != self.config_hash or \
           old_tags_hash != self.tags_hash:
            for docname in self.env.found_docs:
                yield docname
            return

        if self.templates:
            template_mtime = self.templates.newest_template_mtime()
        else:
            template_mtime = 0
        for docname in self.env.found_docs:
            if docname not in self.env.all_docs:
                yield docname
                continue
            targetname = self.get_outfilename(docname)
            try:
                targetmtime = path.getmtime(targetname)
            except Exception:
                targetmtime = 0
            try:
                srcmtime = max(path.getmtime(self.env.doc2path(docname)),
                               template_mtime)
                if srcmtime > targetmtime:
                    yield docname
            except EnvironmentError:
                # source doesn't exist anymore
                pass

    def render_partial(self, node):
        """Utility: Render a lone doctree node."""
        if node is None:
            return {'fragment': ''}
        doc = new_document(b'<partial node>')
        doc.append(node)

        if self._publisher is None:
            self._publisher = Publisher(
                source_class = DocTreeInput,
                destination_class=StringOutput)
            self._publisher.set_components('standalone',
                                           'restructuredtext', 'pseudoxml')

        pub = self._publisher

        pub.reader = DoctreeReader()
        pub.writer = HTMLWriter(self)
        pub.process_programmatic_settings(
            None, {'output_encoding': 'unicode'}, None)
        pub.set_source(doc, None)
        pub.set_destination(None, None)
        pub.publish()
        return pub.writer.parts

    def prepare_writing(self, docnames):
        # create the search indexer
        self.indexer = None
        if self.search:
            from sphinx.search import IndexBuilder, languages
            lang = self.config.html_search_language or self.config.language
            if not lang or lang not in languages:
                lang = 'en'
            self.indexer = IndexBuilder(self.env, lang,
                                        self.config.html_search_options,
                                        self.config.html_search_scorer)
            self.load_indexer(docnames)

        self.docwriter = HTMLWriter(self)
        self.docsettings = OptionParser(
            defaults=self.env.settings,
            components=(self.docwriter,),
            read_config_files=True).get_default_values()
        self.docsettings.compact_lists = bool(self.config.html_compact_lists)

        # determine the additional indices to include
        self.domain_indices = []
        # html_domain_indices can be False/True or a list of index names
        indices_config = self.config.html_domain_indices
        if indices_config:
            for domain_name in sorted(self.env.domains):
                domain = self.env.domains[domain_name]
                for indexcls in domain.indices:
                    indexname = '%s-%s' % (domain.name, indexcls.name)
                    if isinstance(indices_config, list):
                        if indexname not in indices_config:
                            continue
                    # deprecated config value
                    if indexname == 'py-modindex' and \
                       not self.config.html_use_modindex:
                        continue
                    content, collapse = indexcls(domain).generate()
                    if content:
                        self.domain_indices.append(
                            (indexname, indexcls, content, collapse))

        # format the "last updated on" string, only once is enough since it
        # typically doesn't include the time of day
        lufmt = self.config.html_last_updated_fmt
        if lufmt is not None:
            self.last_updated = format_date(lufmt or _('MMM dd, YYYY'),
                                            language=self.config.language)
        else:
            self.last_updated = None

        logo = self.config.html_logo and \
            path.basename(self.config.html_logo) or ''

        favicon = self.config.html_favicon and \
            path.basename(self.config.html_favicon) or ''
        if favicon and os.path.splitext(favicon)[1] != '.ico':
            self.warn('html_favicon is not an .ico file')

        if not isinstance(self.config.html_use_opensearch, string_types):
            self.warn('html_use_opensearch config value must now be a string')

        self.relations = self.env.collect_relations()

        rellinks = []
        if self.get_builder_config('use_index', 'html'):
            rellinks.append(('genindex', _('General Index'), 'I', _('index')))
        for indexname, indexcls, content, collapse in self.domain_indices:
            # if it has a short name
            if indexcls.shortname:
                rellinks.append((indexname, indexcls.localname,
                                 '', indexcls.shortname))

        if self.config.html_style is not None:
            stylename = self.config.html_style
        elif self.theme:
            stylename = self.theme.get_confstr('theme', 'stylesheet')
        else:
            stylename = 'default.css'

        self.globalcontext = dict(
            embedded = self.embedded,
            project = self.config.project,
            release = self.config.release,
            version = self.config.version,
            last_updated = self.last_updated,
            copyright = self.config.copyright,
            master_doc = self.config.master_doc,
            use_opensearch = self.config.html_use_opensearch,
            docstitle = self.config.html_title,
            shorttitle = self.config.html_short_title,
            show_copyright = self.config.html_show_copyright,
            show_sphinx = self.config.html_show_sphinx,
            has_source = self.config.html_copy_source,
            show_source = self.config.html_show_sourcelink,
            file_suffix = self.out_suffix,
            script_files = self.script_files,
            language = self.config.language,
            css_files = self.css_files,
            sphinx_version = __display_version__,
            style = stylename,
            rellinks = rellinks,
            builder = self.name,
            parents = [],
            logo = logo,
            favicon = favicon,
        )
        if self.theme:
            self.globalcontext.update(
                ('theme_' + key, val) for (key, val) in
                iteritems(self.theme.get_options(self.theme_options)))
        self.globalcontext.update(self.config.html_context)

    def get_doc_context(self, docname, body, metatags):
        """Collect items for the template context of a page."""
        # find out relations
        prev = next = None
        parents = []
        rellinks = self.globalcontext['rellinks'][:]
        related = self.relations.get(docname)
        titles = self.env.titles
        if related and related[2]:
            try:
                next = {
                    'link': self.get_relative_uri(docname, related[2]),
                    'title': self.render_partial(titles[related[2]])['title']
                }
                rellinks.append((related[2], next['title'], 'N', _('next')))
            except KeyError:
                next = None
        if related and related[1]:
            try:
                prev = {
                    'link': self.get_relative_uri(docname, related[1]),
                    'title': self.render_partial(titles[related[1]])['title']
                }
                rellinks.append((related[1], prev['title'], 'P', _('previous')))
            except KeyError:
                # the relation is (somehow) not in the TOC tree, handle
                # that gracefully
                prev = None
        while related and related[0]:
            try:
                parents.append(
                    {'link': self.get_relative_uri(docname, related[0]),
                     'title': self.render_partial(titles[related[0]])['title']})
            except KeyError:
                pass
            related = self.relations.get(related[0])
        if parents:
            # remove link to the master file; we have a generic
            # "back to index" link already
            parents.pop()
        parents.reverse()

        # title rendered as HTML
        title = self.env.longtitles.get(docname)
        title = title and self.render_partial(title)['title'] or ''
        # the name for the copied source
        sourcename = self.config.html_copy_source and docname + '.txt' or ''

        # metadata for the document
        meta = self.env.metadata.get(docname)

        # Suffix for the document
        source_suffix = '.' + self.env.doc2path(docname).split('.')[-1]

        # local TOC and global TOC tree
        self_toc = self.env.get_toc_for(docname, self)
        toc = self.render_partial(self_toc)['fragment']

        return dict(
            parents = parents,
            prev = prev,
            next = next,
            title = title,
            meta = meta,
            body = body,
            metatags = metatags,
            rellinks = rellinks,
            sourcename = sourcename,
            toc = toc,
            # only display a TOC if there's more than one item to show
            display_toc = (self.env.toc_num_entries[docname] > 1),
            page_source_suffix = source_suffix,
        )

    def write_doc(self, docname, doctree):
        destination = StringOutput(encoding='utf-8')
        doctree.settings = self.docsettings

        self.secnumbers = self.env.toc_secnumbers.get(docname, {})
        self.fignumbers = self.env.toc_fignumbers.get(docname, {})
        self.imgpath = relative_uri(self.get_target_uri(docname), '_images')
        self.dlpath = relative_uri(self.get_target_uri(docname), '_downloads')
        self.current_docname = docname
        self.docwriter.write(doctree, destination)
        self.docwriter.assemble_parts()
        body = self.docwriter.parts['fragment']
        metatags = self.docwriter.clean_meta

        ctx = self.get_doc_context(docname, body, metatags)
        self.handle_page(docname, ctx, event_arg=doctree)

    def write_doc_serialized(self, docname, doctree):
        self.imgpath = relative_uri(self.get_target_uri(docname), self.imagedir)
        self.post_process_images(doctree)
        title = self.env.longtitles.get(docname)
        title = title and self.render_partial(title)['title'] or ''
        self.index_page(docname, doctree, title)

    def finish(self):
        self.finish_tasks.add_task(self.gen_indices)
        self.finish_tasks.add_task(self.gen_additional_pages)
        self.finish_tasks.add_task(self.copy_image_files)
        self.finish_tasks.add_task(self.copy_download_files)
        self.finish_tasks.add_task(self.copy_static_files)
        self.finish_tasks.add_task(self.copy_extra_files)
        self.finish_tasks.add_task(self.write_buildinfo)

        # dump the search index
        self.handle_finish()

    def gen_indices(self):
        self.info(bold('generating indices...'), nonl=1)

        # the global general index
        if self.get_builder_config('use_index', 'html'):
            self.write_genindex()

        # the global domain-specific indices
        self.write_domain_indices()

        self.info()

    def gen_additional_pages(self):
        # pages from extensions
        for pagelist in self.app.emit('html-collect-pages'):
            for pagename, context, template in pagelist:
                self.handle_page(pagename, context, template)

        self.info(bold('writing additional pages...'), nonl=1)

        # additional pages from conf.py
        for pagename, template in self.config.html_additional_pages.items():
            self.info(' '+pagename, nonl=1)
            self.handle_page(pagename, {}, template)

        # the search page
        if self.search:
            self.info(' search', nonl=1)
            self.handle_page('search', {}, 'search.html')

        # the opensearch xml file
        if self.config.html_use_opensearch and self.search:
            self.info(' opensearch', nonl=1)
            fn = path.join(self.outdir, '_static', 'opensearch.xml')
            self.handle_page('opensearch', {}, 'opensearch.xml', outfilename=fn)

        self.info()

    def write_genindex(self):
        # the total count of lines for each index letter, used to distribute
        # the entries into two columns
        genindex = self.env.create_index(self)
        indexcounts = []
        for _k, entries in genindex:
            indexcounts.append(sum(1 + len(subitems)
                                   for _, (_, subitems, _) in entries))

        genindexcontext = dict(
            genindexentries = genindex,
            genindexcounts = indexcounts,
            split_index = self.config.html_split_index,
        )
        self.info(' genindex', nonl=1)

        if self.config.html_split_index:
            self.handle_page('genindex', genindexcontext,
                             'genindex-split.html')
            self.handle_page('genindex-all', genindexcontext,
                             'genindex.html')
            for (key, entries), count in zip(genindex, indexcounts):
                ctx = {'key': key, 'entries': entries, 'count': count,
                       'genindexentries': genindex}
                self.handle_page('genindex-' + key, ctx,
                                 'genindex-single.html')
        else:
            self.handle_page('genindex', genindexcontext, 'genindex.html')

    def write_domain_indices(self):
        for indexname, indexcls, content, collapse in self.domain_indices:
            indexcontext = dict(
                indextitle = indexcls.localname,
                content = content,
                collapse_index = collapse,
            )
            self.info(' ' + indexname, nonl=1)
            self.handle_page(indexname, indexcontext, 'domainindex.html')

    def copy_image_files(self):
        # copy image files
        if self.images:
            ensuredir(path.join(self.outdir, self.imagedir))
            for src in self.app.status_iterator(self.images, 'copying images... ',
                                                brown, len(self.images)):
                dest = self.images[src]
                try:
                    copyfile(path.join(self.srcdir, src),
                             path.join(self.outdir, self.imagedir, dest))
                except Exception as err:
                    self.warn('cannot copy image file %r: %s' %
                              (path.join(self.srcdir, src), err))

    def copy_download_files(self):
        def to_relpath(f):
            return relative_path(self.srcdir, f)
        # copy downloadable files
        if self.env.dlfiles:
            ensuredir(path.join(self.outdir, '_downloads'))
            for src in self.app.status_iterator(self.env.dlfiles,
                                                'copying downloadable files... ',
                                                brown, len(self.env.dlfiles),
                                                stringify_func=to_relpath):
                dest = self.env.dlfiles[src][1]
                try:
                    copyfile(path.join(self.srcdir, src),
                             path.join(self.outdir, '_downloads', dest))
                except Exception as err:
                    self.warn('cannot copy downloadable file %r: %s' %
                              (path.join(self.srcdir, src), err))

    def copy_static_files(self):
        # copy static files
        self.info(bold('copying static files... '), nonl=True)
        ensuredir(path.join(self.outdir, '_static'))
        # first, create pygments style file
        f = open(path.join(self.outdir, '_static', 'pygments.css'), 'w')
        f.write(self.highlighter.get_stylesheet())
        f.close()
        # then, copy translations JavaScript file
        if self.config.language is not None:
            jsfile = self._get_translations_js()
            if jsfile:
                copyfile(jsfile, path.join(self.outdir, '_static',
                                           'translations.js'))

        # copy non-minified stemmer JavaScript file
        if self.indexer is not None:
            jsfile = self.indexer.get_js_stemmer_rawcode()
            if jsfile:
                copyfile(jsfile, path.join(self.outdir, '_static', '_stemmer.js'))

        ctx = self.globalcontext.copy()

        # add context items for search function used in searchtools.js_t
        if self.indexer is not None:
            ctx.update(self.indexer.context_for_searchtool())

        # then, copy over theme-supplied static files
        if self.theme:
            themeentries = [path.join(themepath, 'static')
                            for themepath in self.theme.get_dirchain()[::-1]]
            for entry in themeentries:
                copy_static_entry(entry, path.join(self.outdir, '_static'),
                                  self, ctx)
        # then, copy over all user-supplied static files
        staticentries = [path.join(self.confdir, spath)
                         for spath in self.config.html_static_path]
        matchers = compile_matchers(self.config.exclude_patterns)
        for entry in staticentries:
            if not path.exists(entry):
                self.warn('html_static_path entry %r does not exist' % entry)
                continue
            copy_static_entry(entry, path.join(self.outdir, '_static'), self,
                              ctx, exclude_matchers=matchers)
        # copy logo and favicon files if not already in static path
        if self.config.html_logo:
            logobase = path.basename(self.config.html_logo)
            logotarget = path.join(self.outdir, '_static', logobase)
            if not path.isfile(path.join(self.confdir, self.config.html_logo)):
                self.warn('logo file %r does not exist' % self.config.html_logo)
            elif not path.isfile(logotarget):
                copyfile(path.join(self.confdir, self.config.html_logo),
                         logotarget)
        if self.config.html_favicon:
            iconbase = path.basename(self.config.html_favicon)
            icontarget = path.join(self.outdir, '_static', iconbase)
            if not path.isfile(path.join(self.confdir, self.config.html_favicon)):
                self.warn('favicon file %r does not exist' % self.config.html_favicon)
            elif not path.isfile(icontarget):
                copyfile(path.join(self.confdir, self.config.html_favicon),
                         icontarget)
        self.info('done')

    def copy_extra_files(self):
        # copy html_extra_path files
        self.info(bold('copying extra files... '), nonl=True)
        extraentries = [path.join(self.confdir, epath)
                        for epath in self.config.html_extra_path]
        matchers = compile_matchers(self.config.exclude_patterns)
        for entry in extraentries:
            if not path.exists(entry):
                self.warn('html_extra_path entry %r does not exist' % entry)
                continue
            copy_extra_entry(entry, self.outdir, matchers)
        self.info('done')

    def write_buildinfo(self):
        # write build info file
        fp = open(path.join(self.outdir, '.buildinfo'), 'w')
        try:
            fp.write('# Sphinx build info version 1\n'
                     '# This file hashes the configuration used when building'
                     ' these files. When it is not found, a full rebuild will'
                     ' be done.\nconfig: %s\ntags: %s\n' %
                     (self.config_hash, self.tags_hash))
        finally:
            fp.close()

    def cleanup(self):
        # clean up theme stuff
        if self.theme:
            self.theme.cleanup()

    def post_process_images(self, doctree):
        """Pick the best candidate for an image and link down-scaled images to
        their high res version.
        """
        Builder.post_process_images(self, doctree)

        if self.config.html_scaled_image_link:
            for node in doctree.traverse(nodes.image):
                scale_keys = ('scale', 'width', 'height')
                if not any((key in node) for key in scale_keys) or \
                   isinstance(node.parent, nodes.reference):
                    # docutils does unfortunately not preserve the
                    # ``target`` attribute on images, so we need to check
                    # the parent node here.
                    continue
                uri = node['uri']
                reference = nodes.reference('', '', internal=True)
                if uri in self.images:
                    reference['refuri'] = posixpath.join(self.imgpath,
                                                         self.images[uri])
                else:
                    reference['refuri'] = uri
                node.replace_self(reference)
                reference.append(node)

    def load_indexer(self, docnames):
        keep = set(self.env.all_docs) - set(docnames)
        try:
            searchindexfn = path.join(self.outdir, self.searchindex_filename)
            if self.indexer_dumps_unicode:
                f = codecs.open(searchindexfn, 'r', encoding='utf-8')
            else:
                f = open(searchindexfn, 'rb')
            try:
                self.indexer.load(f, self.indexer_format)
            finally:
                f.close()
        except (IOError, OSError, ValueError):
            if keep:
                self.warn('search index couldn\'t be loaded, but not all '
                          'documents will be built: the index will be '
                          'incomplete.')
        # delete all entries for files that will be rebuilt
        self.indexer.prune(keep)

    def index_page(self, pagename, doctree, title):
        # only index pages with title
        if self.indexer is not None and title:
            self.indexer.feed(pagename, title, doctree)

    def _get_local_toctree(self, docname, collapse=True, **kwds):
        if 'includehidden' not in kwds:
            kwds['includehidden'] = False
        return self.render_partial(self.env.get_toctree_for(
            docname, self, collapse, **kwds))['fragment']

    def get_outfilename(self, pagename):
        return path.join(self.outdir, os_path(pagename) + self.out_suffix)

    def add_sidebars(self, pagename, ctx):
        def has_wildcard(pattern):
            return any(char in pattern for char in '*?[')
        sidebars = None
        matched = None
        customsidebar = None
        for pattern, patsidebars in iteritems(self.config.html_sidebars):
            if patmatch(pagename, pattern):
                if matched:
                    if has_wildcard(pattern):
                        # warn if both patterns contain wildcards
                        if has_wildcard(matched):
                            self.warn('page %s matches two patterns in '
                                      'html_sidebars: %r and %r' %
                                      (pagename, matched, pattern))
                        # else the already matched pattern is more specific
                        # than the present one, because it contains no wildcard
                        continue
                matched = pattern
                sidebars = patsidebars
        if sidebars is None:
            # keep defaults
            pass
        elif isinstance(sidebars, string_types):
            # 0.x compatible mode: insert custom sidebar before searchbox
            customsidebar = sidebars
            sidebars = None
        ctx['sidebars'] = sidebars
        ctx['customsidebar'] = customsidebar

    # --------- these are overwritten by the serialization builder

    def get_target_uri(self, docname, typ=None):
        return docname + self.link_suffix

    def handle_page(self, pagename, addctx, templatename='page.html',
                    outfilename=None, event_arg=None):
        ctx = self.globalcontext.copy()
        # current_page_name is backwards compatibility
        ctx['pagename'] = ctx['current_page_name'] = pagename
        default_baseuri = self.get_target_uri(pagename)
        # in the singlehtml builder, default_baseuri still contains an #anchor
        # part, which relative_uri doesn't really like...
        default_baseuri = default_baseuri.rsplit('#', 1)[0]

        def pathto(otheruri, resource=False, baseuri=default_baseuri):
            if resource and '://' in otheruri:
                # allow non-local resources given by scheme
                return otheruri
            elif not resource:
                otheruri = self.get_target_uri(otheruri)
            uri = relative_uri(baseuri, otheruri) or '#'
            return uri
        ctx['pathto'] = pathto
        ctx['hasdoc'] = lambda name: name in self.env.all_docs
        if self.name != 'htmlhelp':
            ctx['encoding'] = encoding = self.config.html_output_encoding
        else:
            ctx['encoding'] = encoding = self.encoding
        ctx['toctree'] = lambda **kw: self._get_local_toctree(pagename, **kw)
        self.add_sidebars(pagename, ctx)
        ctx.update(addctx)

        newtmpl = self.app.emit_firstresult('html-page-context', pagename,
                                            templatename, ctx, event_arg)
        if newtmpl:
            templatename = newtmpl

        try:
            output = self.templates.render(templatename, ctx)
        except UnicodeError:
            self.warn("a Unicode error occurred when rendering the page %s. "
                      "Please make sure all config values that contain "
                      "non-ASCII content are Unicode strings." % pagename)
            return

        if not outfilename:
            outfilename = self.get_outfilename(pagename)
        # outfilename's path is in general different from self.outdir
        ensuredir(path.dirname(outfilename))
        try:
            f = codecs.open(outfilename, 'w', encoding, 'xmlcharrefreplace')
            try:
                f.write(output)
            finally:
                f.close()
        except (IOError, OSError) as err:
            self.warn("error writing file %s: %s" % (outfilename, err))
        if self.copysource and ctx.get('sourcename'):
            # copy the source file for the "show source" link
            source_name = path.join(self.outdir, '_sources',
                                    os_path(ctx['sourcename']))
            ensuredir(path.dirname(source_name))
            copyfile(self.env.doc2path(pagename), source_name)

    def handle_finish(self):
        if self.indexer:
            self.finish_tasks.add_task(self.dump_search_index)
        self.finish_tasks.add_task(self.dump_inventory)

    def dump_inventory(self):
        self.info(bold('dumping object inventory... '), nonl=True)
        f = open(path.join(self.outdir, INVENTORY_FILENAME), 'wb')
        try:
            f.write((u'# Sphinx inventory version 2\n'
                     u'# Project: %s\n'
                     u'# Version: %s\n'
                     u'# The remainder of this file is compressed using zlib.\n'
                     % (self.config.project, self.config.version)).encode('utf-8'))
            compressor = zlib.compressobj(9)
            for domainname, domain in sorted(self.env.domains.items()):
                for name, dispname, type, docname, anchor, prio in \
                        sorted(domain.get_objects()):
                    if anchor.endswith(name):
                        # this can shorten the inventory by as much as 25%
                        anchor = anchor[:-len(name)] + '$'
                    uri = self.get_target_uri(docname)
                    if anchor:
                        uri += '#' + anchor
                    if dispname == name:
                        dispname = u'-'
                    f.write(compressor.compress(
                        (u'%s %s:%s %s %s %s\n' % (name, domainname, type,
                                                   prio, uri, dispname)).encode('utf-8')))
            f.write(compressor.flush())
        finally:
            f.close()
        self.info('done')

    def dump_search_index(self):
        self.info(
            bold('dumping search index in %s ... ' % self.indexer.label()),
            nonl=True)
        self.indexer.prune(self.env.all_docs)
        searchindexfn = path.join(self.outdir, self.searchindex_filename)
        # first write to a temporary file, so that if dumping fails,
        # the existing index won't be overwritten
        if self.indexer_dumps_unicode:
            f = codecs.open(searchindexfn + '.tmp', 'w', encoding='utf-8')
        else:
            f = open(searchindexfn + '.tmp', 'wb')
        try:
            self.indexer.dump(f, self.indexer_format)
        finally:
            f.close()
        movefile(searchindexfn + '.tmp', searchindexfn)
        self.info('done')
Ejemplo n.º 2
0
class StandaloneHTMLBuilder(Builder):
    """
    Builds standalone HTML docs.
    """
    name = 'html'
    format = 'html'
    copysource = True
    allow_parallel = True
    out_suffix = '.html'
    link_suffix = '.html'  # defaults to matching out_suffix
    indexer_format = js_index
    indexer_dumps_unicode = True
    supported_image_types = [
        'image/svg+xml', 'image/png', 'image/gif', 'image/jpeg'
    ]
    searchindex_filename = 'searchindex.js'
    add_permalinks = True
    embedded = False  # for things like HTML help or Qt help: suppresses sidebar

    # This is a class attribute because it is mutated by Sphinx.add_javascript.
    script_files = [
        '_static/jquery.js', '_static/underscore.js', '_static/doctools.js'
    ]
    # Dito for this one.
    css_files = []

    default_sidebars = [
        'localtoc.html', 'relations.html', 'sourcelink.html', 'searchbox.html'
    ]

    # cached publisher object for snippets
    _publisher = None

    def init(self):
        # a hash of all config values that, if changed, cause a full rebuild
        self.config_hash = ''
        self.tags_hash = ''
        # section numbers for headings in the currently visited document
        self.secnumbers = {}
        # currently written docname
        self.current_docname = None

        self.init_templates()
        self.init_highlighter()
        self.init_translator_class()
        if self.config.html_file_suffix is not None:
            self.out_suffix = self.config.html_file_suffix

        if self.config.html_link_suffix is not None:
            self.link_suffix = self.config.html_link_suffix
        else:
            self.link_suffix = self.out_suffix

        if self.config.language is not None:
            if self._get_translations_js():
                self.script_files.append('_static/translations.js')

    def _get_translations_js(self):
        candidates = [path.join(package_dir, 'locale', self.config.language,
                                'LC_MESSAGES', 'sphinx.js'),
                      path.join(sys.prefix, 'share/sphinx/locale',
                                self.config.language, 'sphinx.js')] + \
                     [path.join(dir, self.config.language,
                                'LC_MESSAGES', 'sphinx.js')
                      for dir in self.config.locale_dirs]
        for jsfile in candidates:
            if path.isfile(jsfile):
                return jsfile
        return None

    def get_theme_config(self):
        return self.config.html_theme, self.config.html_theme_options

    def init_templates(self):
        Theme.init_themes(self.confdir,
                          self.config.html_theme_path,
                          warn=self.warn)
        themename, themeoptions = self.get_theme_config()
        self.theme = Theme(themename)
        self.theme_options = themeoptions.copy()
        self.create_template_bridge()
        self.templates.init(self, self.theme)

    def init_highlighter(self):
        # determine Pygments style and create the highlighter
        if self.config.pygments_style is not None:
            style = self.config.pygments_style
        elif self.theme:
            style = self.theme.get_confstr('theme', 'pygments_style', 'none')
        else:
            style = 'sphinx'
        self.highlighter = PygmentsBridge('html', style,
                                          self.config.trim_doctest_flags)

    def init_translator_class(self):
        if self.config.html_translator_class:
            self.translator_class = self.app.import_object(
                self.config.html_translator_class,
                'html_translator_class setting')
        elif self.config.html_use_smartypants:
            self.translator_class = SmartyPantsHTMLTranslator
        else:
            self.translator_class = HTMLTranslator

    def get_outdated_docs(self):
        cfgdict = dict((name, self.config[name])
                       for (name, desc) in self.config.values.items()
                       if desc[1] == 'html')
        self.config_hash = get_stable_hash(cfgdict)
        self.tags_hash = get_stable_hash(sorted(self.tags))
        old_config_hash = old_tags_hash = ''
        try:
            fp = open(path.join(self.outdir, '.buildinfo'))
            try:
                version = fp.readline()
                if version.rstrip() != '# Sphinx build info version 1':
                    raise ValueError
                fp.readline()  # skip commentary
                cfg, old_config_hash = fp.readline().strip().split(': ')
                if cfg != 'config':
                    raise ValueError
                tag, old_tags_hash = fp.readline().strip().split(': ')
                if tag != 'tags':
                    raise ValueError
            finally:
                fp.close()
        except ValueError:
            self.warn('unsupported build info format in %r, building all' %
                      path.join(self.outdir, '.buildinfo'))
        except Exception:
            pass
        if old_config_hash != self.config_hash or \
               old_tags_hash != self.tags_hash:
            for docname in self.env.found_docs:
                yield docname
            return

        if self.templates:
            template_mtime = self.templates.newest_template_mtime()
        else:
            template_mtime = 0
        for docname in self.env.found_docs:
            if docname not in self.env.all_docs:
                yield docname
                continue
            targetname = self.get_outfilename(docname)
            try:
                targetmtime = path.getmtime(targetname)
            except Exception:
                targetmtime = 0
            try:
                srcmtime = max(path.getmtime(self.env.doc2path(docname)),
                               template_mtime)
                if srcmtime > targetmtime:
                    yield docname
            except EnvironmentError:
                # source doesn't exist anymore
                pass

    def render_partial(self, node):
        """Utility: Render a lone doctree node."""
        if node is None:
            return {'fragment': ''}
        doc = new_document(b('<partial node>'))
        doc.append(node)

        if self._publisher is None:
            self._publisher = Publisher(source_class=DocTreeInput,
                                        destination_class=StringOutput)
            self._publisher.set_components('standalone', 'restructuredtext',
                                           'pseudoxml')

        pub = self._publisher

        pub.reader = DoctreeReader()
        pub.writer = HTMLWriter(self)
        pub.process_programmatic_settings(None, {'output_encoding': 'unicode'},
                                          None)
        pub.set_source(doc, None)
        pub.set_destination(None, None)
        pub.publish()
        return pub.writer.parts

    def prepare_writing(self, docnames):
        # create the search indexer
        from sphinx.search import IndexBuilder, languages
        lang = self.config.html_search_language or self.config.language
        if not lang or lang not in languages:
            lang = 'en'
        self.indexer = IndexBuilder(self.env, lang,
                                    self.config.html_search_options,
                                    self.config.html_search_scorer)
        self.load_indexer(docnames)

        self.docwriter = HTMLWriter(self)
        self.docsettings = OptionParser(
            defaults=self.env.settings,
            components=(self.docwriter, ),
            read_config_files=True).get_default_values()
        self.docsettings.compact_lists = bool(self.config.html_compact_lists)

        # determine the additional indices to include
        self.domain_indices = []
        # html_domain_indices can be False/True or a list of index names
        indices_config = self.config.html_domain_indices
        if indices_config:
            for domain in self.env.domains.values():
                for indexcls in domain.indices:
                    indexname = '%s-%s' % (domain.name, indexcls.name)
                    if isinstance(indices_config, list):
                        if indexname not in indices_config:
                            continue
                    # deprecated config value
                    if indexname == 'py-modindex' and \
                           not self.config.html_use_modindex:
                        continue
                    content, collapse = indexcls(domain).generate()
                    if content:
                        self.domain_indices.append(
                            (indexname, indexcls, content, collapse))

        # format the "last updated on" string, only once is enough since it
        # typically doesn't include the time of day
        lufmt = self.config.html_last_updated_fmt
        if lufmt is not None:
            self.last_updated = ustrftime(lufmt or _('%b %d, %Y'))
        else:
            self.last_updated = None

        logo = self.config.html_logo and \
               path.basename(self.config.html_logo) or ''

        favicon = self.config.html_favicon and \
                  path.basename(self.config.html_favicon) or ''
        if favicon and os.path.splitext(favicon)[1] != '.ico':
            self.warn('html_favicon is not an .ico file')

        if not isinstance(self.config.html_use_opensearch, str):
            self.warn('html_use_opensearch config value must now be a string')

        self.relations = self.env.collect_relations()

        rellinks = []
        if self.get_builder_config('use_index', 'html'):
            rellinks.append(('genindex', _('General Index'), 'I', _('index')))
        for indexname, indexcls, content, collapse in self.domain_indices:
            # if it has a short name
            if indexcls.shortname:
                rellinks.append(
                    (indexname, indexcls.localname, '', indexcls.shortname))

        if self.config.html_style is not None:
            stylename = self.config.html_style
        elif self.theme:
            stylename = self.theme.get_confstr('theme', 'stylesheet')
        else:
            stylename = 'default.css'

        self.globalcontext = dict(
            embedded=self.embedded,
            project=self.config.project,
            release=self.config.release,
            version=self.config.version,
            last_updated=self.last_updated,
            copyright=self.config.copyright,
            master_doc=self.config.master_doc,
            use_opensearch=self.config.html_use_opensearch,
            docstitle=self.config.html_title,
            shorttitle=self.config.html_short_title,
            show_copyright=self.config.html_show_copyright,
            show_sphinx=self.config.html_show_sphinx,
            has_source=self.config.html_copy_source,
            show_source=self.config.html_show_sourcelink,
            file_suffix=self.out_suffix,
            script_files=self.script_files,
            css_files=self.css_files,
            sphinx_version=__version__,
            style=stylename,
            rellinks=rellinks,
            builder=self.name,
            parents=[],
            logo=logo,
            favicon=favicon,
        )
        if self.theme:
            self.globalcontext.update(('theme_' + key, val) for (
                key,
                val) in self.theme.get_options(self.theme_options).items())
        self.globalcontext.update(self.config.html_context)

    def get_doc_context(self, docname, body, metatags):
        """Collect items for the template context of a page."""
        # find out relations
        prev = next = None
        parents = []
        rellinks = self.globalcontext['rellinks'][:]
        related = self.relations.get(docname)
        titles = self.env.titles
        if related and related[2]:
            try:
                next = {
                    'link': self.get_relative_uri(docname, related[2]),
                    'title': self.render_partial(titles[related[2]])['title']
                }
                rellinks.append((related[2], next['title'], 'N', _('next')))
            except KeyError:
                next = None
        if related and related[1]:
            try:
                prev = {
                    'link': self.get_relative_uri(docname, related[1]),
                    'title': self.render_partial(titles[related[1]])['title']
                }
                rellinks.append(
                    (related[1], prev['title'], 'P', _('previous')))
            except KeyError:
                # the relation is (somehow) not in the TOC tree, handle
                # that gracefully
                prev = None
        while related and related[0]:
            try:
                parents.append({
                    'link':
                    self.get_relative_uri(docname, related[0]),
                    'title':
                    self.render_partial(titles[related[0]])['title']
                })
            except KeyError:
                pass
            related = self.relations.get(related[0])
        if parents:
            parents.pop()  # remove link to the master file; we have a generic
            # "back to index" link already
        parents.reverse()

        # title rendered as HTML
        title = self.env.longtitles.get(docname)
        title = title and self.render_partial(title)['title'] or ''
        # the name for the copied source
        sourcename = self.config.html_copy_source and docname + '.txt' or ''

        # metadata for the document
        meta = self.env.metadata.get(docname)

        # local TOC and global TOC tree
        self_toc = self.env.get_toc_for(docname, self)
        toc = self.render_partial(self_toc)['fragment']

        return dict(
            parents=parents,
            prev=prev,
            next=next,
            title=title,
            meta=meta,
            body=body,
            metatags=metatags,
            rellinks=rellinks,
            sourcename=sourcename,
            toc=toc,
            # only display a TOC if there's more than one item to show
            display_toc=(self.env.toc_num_entries[docname] > 1),
        )

    def write_doc(self, docname, doctree):
        destination = StringOutput(encoding='utf-8')
        doctree.settings = self.docsettings

        self.secnumbers = self.env.toc_secnumbers.get(docname, {})
        self.imgpath = relative_uri(self.get_target_uri(docname), '_images')
        self.dlpath = relative_uri(self.get_target_uri(docname), '_downloads')
        self.current_docname = docname
        self.docwriter.write(doctree, destination)
        self.docwriter.assemble_parts()
        body = self.docwriter.parts['fragment']
        metatags = self.docwriter.clean_meta

        ctx = self.get_doc_context(docname, body, metatags)
        self.handle_page(docname, ctx, event_arg=doctree)

    def write_doc_serialized(self, docname, doctree):
        self.imgpath = relative_uri(self.get_target_uri(docname), '_images')
        self.post_process_images(doctree)
        title = self.env.longtitles.get(docname)
        title = title and self.render_partial(title)['title'] or ''
        self.index_page(docname, doctree, title)

    def finish(self):
        self.info(bold('writing additional files...'), nonl=1)

        # pages from extensions
        for pagelist in self.app.emit('html-collect-pages'):
            for pagename, context, template in pagelist:
                self.handle_page(pagename, context, template)

        # the global general index
        if self.get_builder_config('use_index', 'html'):
            self.write_genindex()

        # the global domain-specific indices
        self.write_domain_indices()

        # the search page
        if self.name != 'htmlhelp':
            self.info(' search', nonl=1)
            self.handle_page('search', {}, 'search.html')

        # additional pages from conf.py
        for pagename, template in list(
                self.config.html_additional_pages.items()):
            self.info(' ' + pagename, nonl=1)
            self.handle_page(pagename, {}, template)

        if self.config.html_use_opensearch and self.name != 'htmlhelp':
            self.info(' opensearch', nonl=1)
            fn = path.join(self.outdir, '_static', 'opensearch.xml')
            self.handle_page('opensearch', {},
                             'opensearch.xml',
                             outfilename=fn)

        self.info()

        self.copy_image_files()
        self.copy_download_files()
        self.copy_static_files()
        self.copy_extra_files()
        self.write_buildinfo()

        # dump the search index
        self.handle_finish()

    def write_genindex(self):
        # the total count of lines for each index letter, used to distribute
        # the entries into two columns
        genindex = self.env.create_index(self)
        indexcounts = []
        for _, entries in genindex:
            indexcounts.append(
                sum(1 + len(subitems) for _, (_, subitems) in entries))

        genindexcontext = dict(
            genindexentries=genindex,
            genindexcounts=indexcounts,
            split_index=self.config.html_split_index,
        )
        self.info(' genindex', nonl=1)

        if self.config.html_split_index:
            self.handle_page('genindex', genindexcontext,
                             'genindex-split.html')
            self.handle_page('genindex-all', genindexcontext, 'genindex.html')
            for (key, entries), count in zip(genindex, indexcounts):
                ctx = {
                    'key': key,
                    'entries': entries,
                    'count': count,
                    'genindexentries': genindex
                }
                self.handle_page('genindex-' + key, ctx,
                                 'genindex-single.html')
        else:
            self.handle_page('genindex', genindexcontext, 'genindex.html')

    def write_domain_indices(self):
        for indexname, indexcls, content, collapse in self.domain_indices:
            indexcontext = dict(
                indextitle=indexcls.localname,
                content=content,
                collapse_index=collapse,
            )
            self.info(' ' + indexname, nonl=1)
            self.handle_page(indexname, indexcontext, 'domainindex.html')

    def copy_image_files(self):
        # copy image files
        if self.images:
            ensuredir(path.join(self.outdir, '_images'))
            for src in self.status_iterator(self.images, 'copying images... ',
                                            brown, len(self.images)):
                dest = self.images[src]
                try:
                    copyfile(path.join(self.srcdir, src),
                             path.join(self.outdir, '_images', dest))
                except Exception as err:
                    self.warn('cannot copy image file %r: %s' %
                              (path.join(self.srcdir, src), err))

    def copy_download_files(self):
        # copy downloadable files
        if self.env.dlfiles:
            ensuredir(path.join(self.outdir, '_downloads'))
            for src in self.status_iterator(self.env.dlfiles,
                                            'copying downloadable files... ',
                                            brown, len(self.env.dlfiles)):
                dest = self.env.dlfiles[src][1]
                try:
                    copyfile(path.join(self.srcdir, src),
                             path.join(self.outdir, '_downloads', dest))
                except Exception as err:
                    self.warn('cannot copy downloadable file %r: %s' %
                              (path.join(self.srcdir, src), err))

    def copy_static_files(self):
        # copy static files
        self.info(bold('copying static files... '), nonl=True)
        ensuredir(path.join(self.outdir, '_static'))
        # first, create pygments style file
        f = open(path.join(self.outdir, '_static', 'pygments.css'), 'w')
        f.write(self.highlighter.get_stylesheet())
        f.close()
        # then, copy translations JavaScript file
        if self.config.language is not None:
            jsfile = self._get_translations_js()
            if jsfile:
                copyfile(jsfile,
                         path.join(self.outdir, '_static', 'translations.js'))

        # add context items for search function used in searchtools.js_t
        ctx = self.globalcontext.copy()
        ctx.update(self.indexer.context_for_searchtool())

        # then, copy over theme-supplied static files
        if self.theme:
            themeentries = [
                path.join(themepath, 'static')
                for themepath in self.theme.get_dirchain()[::-1]
            ]
            for entry in themeentries:
                copy_static_entry(entry, path.join(self.outdir, '_static'),
                                  self, ctx)
        # then, copy over all user-supplied static files
        staticentries = [
            path.join(self.confdir, spath)
            for spath in self.config.html_static_path
        ]
        matchers = compile_matchers(
            self.config.exclude_patterns +
            ['**/' + d for d in self.config.exclude_dirnames])
        for entry in staticentries:
            if not path.exists(entry):
                self.warn('html_static_path entry %r does not exist' % entry)
                continue
            copy_static_entry(entry,
                              path.join(self.outdir, '_static'),
                              self,
                              ctx,
                              exclude_matchers=matchers)
        # copy logo and favicon files if not already in static path
        if self.config.html_logo:
            logobase = path.basename(self.config.html_logo)
            logotarget = path.join(self.outdir, '_static', logobase)
            if not path.isfile(logotarget):
                copyfile(path.join(self.confdir, self.config.html_logo),
                         logotarget)
        if self.config.html_favicon:
            iconbase = path.basename(self.config.html_favicon)
            icontarget = path.join(self.outdir, '_static', iconbase)
            if not path.isfile(icontarget):
                copyfile(path.join(self.confdir, self.config.html_favicon),
                         icontarget)
        self.info('done')

    def copy_extra_files(self):
        # copy html_extra_path files
        self.info(bold('copying extra files... '), nonl=True)
        extraentries = [
            path.join(self.confdir, epath)
            for epath in self.config.html_extra_path
        ]
        for entry in extraentries:
            if not path.exists(entry):
                self.warn('html_extra_path entry %r does not exist' % entry)
                continue
            copy_static_entry(entry, self.outdir, self)

    def write_buildinfo(self):
        # write build info file
        fp = open(path.join(self.outdir, '.buildinfo'), 'w')
        try:
            fp.write('# Sphinx build info version 1\n'
                     '# This file hashes the configuration used when building'
                     ' these files. When it is not found, a full rebuild will'
                     ' be done.\nconfig: %s\ntags: %s\n' %
                     (self.config_hash, self.tags_hash))
        finally:
            fp.close()

    def cleanup(self):
        # clean up theme stuff
        if self.theme:
            self.theme.cleanup()

    def post_process_images(self, doctree):
        """Pick the best candidate for an image and link down-scaled images to
        their high res version.
        """
        Builder.post_process_images(self, doctree)
        for node in doctree.traverse(nodes.image):
            scale_keys = ('scale', 'width', 'height')
            if not any((key in node) for key in scale_keys) or \
               isinstance(node.parent, nodes.reference):
                # docutils does unfortunately not preserve the
                # ``target`` attribute on images, so we need to check
                # the parent node here.
                continue
            uri = node['uri']
            reference = nodes.reference('', '', internal=True)
            if uri in self.images:
                reference['refuri'] = posixpath.join(self.imgpath,
                                                     self.images[uri])
            else:
                reference['refuri'] = uri
            node.replace_self(reference)
            reference.append(node)

    def load_indexer(self, docnames):
        keep = set(self.env.all_docs) - set(docnames)
        try:
            searchindexfn = path.join(self.outdir, self.searchindex_filename)
            if self.indexer_dumps_unicode:
                f = codecs.open(searchindexfn, 'r', encoding='utf-8')
            else:
                f = open(searchindexfn, 'rb')
            try:
                self.indexer.load(f, self.indexer_format)
            finally:
                f.close()
        except (IOError, OSError, ValueError):
            if keep:
                self.warn('search index couldn\'t be loaded, but not all '
                          'documents will be built: the index will be '
                          'incomplete.')
        # delete all entries for files that will be rebuilt
        self.indexer.prune(keep)

    def index_page(self, pagename, doctree, title):
        # only index pages with title
        if self.indexer is not None and title:
            self.indexer.feed(pagename, title, doctree)

    def _get_local_toctree(self, docname, collapse=True, **kwds):
        if 'includehidden' not in kwds:
            kwds['includehidden'] = False
        return self.render_partial(
            self.env.get_toctree_for(docname, self, collapse,
                                     **kwds))['fragment']

    def get_outfilename(self, pagename):
        return path.join(self.outdir, os_path(pagename) + self.out_suffix)

    def add_sidebars(self, pagename, ctx):
        def has_wildcard(pattern):
            return any(char in pattern for char in '*?[')

        sidebars = None
        matched = None
        customsidebar = None
        for pattern, patsidebars in self.config.html_sidebars.items():
            if patmatch(pagename, pattern):
                if matched:
                    if has_wildcard(pattern):
                        # warn if both patterns contain wildcards
                        if has_wildcard(matched):
                            self.warn('page %s matches two patterns in '
                                      'html_sidebars: %r and %r' %
                                      (pagename, matched, pattern))
                        # else the already matched pattern is more specific
                        # than the present one, because it contains no wildcard
                        continue
                matched = pattern
                sidebars = patsidebars
        if sidebars is None:
            # keep defaults
            pass
        elif isinstance(sidebars, str):
            # 0.x compatible mode: insert custom sidebar before searchbox
            customsidebar = sidebars
            sidebars = None
        ctx['sidebars'] = sidebars
        ctx['customsidebar'] = customsidebar

    # --------- these are overwritten by the serialization builder

    def get_target_uri(self, docname, typ=None):
        return docname + self.link_suffix

    def handle_page(self,
                    pagename,
                    addctx,
                    templatename='page.html',
                    outfilename=None,
                    event_arg=None):
        ctx = self.globalcontext.copy()
        # current_page_name is backwards compatibility
        ctx['pagename'] = ctx['current_page_name'] = pagename
        default_baseuri = self.get_target_uri(pagename)
        # in the singlehtml builder, default_baseuri still contains an #anchor
        # part, which relative_uri doesn't really like...
        default_baseuri = default_baseuri.rsplit('#', 1)[0]

        def pathto(otheruri, resource=False, baseuri=default_baseuri):
            if resource and '://' in otheruri:
                # allow non-local resources given by scheme
                return otheruri
            elif not resource:
                otheruri = self.get_target_uri(otheruri)
            uri = relative_uri(baseuri, otheruri) or '#'
            return uri

        ctx['pathto'] = pathto
        ctx['hasdoc'] = lambda name: name in self.env.all_docs
        if self.name != 'htmlhelp':
            ctx['encoding'] = encoding = self.config.html_output_encoding
        else:
            ctx['encoding'] = encoding = self.encoding
        ctx['toctree'] = lambda **kw: self._get_local_toctree(pagename, **kw)
        self.add_sidebars(pagename, ctx)
        ctx.update(addctx)

        self.app.emit('html-page-context', pagename, templatename, ctx,
                      event_arg)

        try:
            output = self.templates.render(templatename, ctx)
        except UnicodeError:
            self.warn("a Unicode error occurred when rendering the page %s. "
                      "Please make sure all config values that contain "
                      "non-ASCII content are Unicode strings." % pagename)
            return

        if not outfilename:
            outfilename = self.get_outfilename(pagename)
        # outfilename's path is in general different from self.outdir
        ensuredir(path.dirname(outfilename))
        try:
            f = codecs.open(outfilename, 'w', encoding, 'xmlcharrefreplace')
            try:
                f.write(output)
            finally:
                f.close()
        except (IOError, OSError) as err:
            self.warn("error writing file %s: %s" % (outfilename, err))
        if self.copysource and ctx.get('sourcename'):
            # copy the source file for the "show source" link
            source_name = path.join(self.outdir, '_sources',
                                    os_path(ctx['sourcename']))
            ensuredir(path.dirname(source_name))
            copyfile(self.env.doc2path(pagename), source_name)

    def handle_finish(self):
        self.dump_search_index()
        self.dump_inventory()

    def dump_inventory(self):
        self.info(bold('dumping object inventory... '), nonl=True)
        f = open(path.join(self.outdir, INVENTORY_FILENAME), 'wb')
        try:
            f.write(
                ('# Sphinx inventory version 2\n'
                 '# Project: %s\n'
                 '# Version: %s\n'
                 '# The remainder of this file is compressed using zlib.\n' %
                 (self.config.project, self.config.version)).encode('utf-8'))
            compressor = zlib.compressobj(9)
            for domainname, domain in self.env.domains.items():
                for name, dispname, type, docname, anchor, prio in \
                        domain.get_objects():
                    if anchor.endswith(name):
                        # this can shorten the inventory by as much as 25%
                        anchor = anchor[:-len(name)] + '$'
                    uri = self.get_target_uri(docname) + '#' + anchor
                    if dispname == name:
                        dispname = '-'
                    f.write(
                        compressor.compress(('%s %s:%s %s %s %s\n' %
                                             (name, domainname, type, prio,
                                              uri, dispname)).encode('utf-8')))
            f.write(compressor.flush())
        finally:
            f.close()
        self.info('done')

    def dump_search_index(self):
        self.info(bold('dumping search index... '), nonl=True)
        self.indexer.prune(self.env.all_docs)
        searchindexfn = path.join(self.outdir, self.searchindex_filename)
        # first write to a temporary file, so that if dumping fails,
        # the existing index won't be overwritten
        if self.indexer_dumps_unicode:
            f = codecs.open(searchindexfn + '.tmp', 'w', encoding='utf-8')
        else:
            f = open(searchindexfn + '.tmp', 'wb')
        try:
            self.indexer.dump(f, self.indexer_format)
        finally:
            f.close()
        movefile(searchindexfn + '.tmp', searchindexfn)
        self.info('done')