91 lines
3 KiB
Python
91 lines
3 KiB
Python
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"""LaTeX Exporter class"""
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# Copyright (c) Jupyter Development Team.
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# Distributed under the terms of the Modified BSD License.
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import os
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from traitlets import Unicode, default
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from traitlets.config import Config
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from jupyter_core.paths import jupyter_path
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from nbconvert.filters.highlight import Highlight2Latex
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from nbconvert.filters.filter_links import resolve_references
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from .templateexporter import TemplateExporter
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class LatexExporter(TemplateExporter):
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"""
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Exports to a Latex template. Inherit from this class if your template is
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LaTeX based and you need custom transformers/filters.
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If you don't need custom transformers/filters, just change the
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'template_file' config option. Place your template in the special "/latex"
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subfolder of the "../templates" folder.
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"""
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export_from_notebook = "LaTeX"
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@default('file_extension')
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def _file_extension_default(self):
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return '.tex'
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@default('template_data_paths')
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def _template_data_paths_default(self):
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return jupyter_path("nbconvert", "templates", "latex")
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@default('template_name')
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def _template_name_default(self):
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return 'latex'
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output_mimetype = 'text/latex'
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def default_filters(self):
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for x in super().default_filters():
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yield x
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yield ('resolve_references', resolve_references)
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@property
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def default_config(self):
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c = Config({
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'NbConvertBase': {
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'display_data_priority' : ['text/latex', 'application/pdf', 'image/png', 'image/jpeg', 'image/svg+xml', 'text/markdown', 'text/plain']
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},
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'ExtractOutputPreprocessor': {
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'enabled':True
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},
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'SVG2PDFPreprocessor': {
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'enabled':True
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},
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'LatexPreprocessor': {
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'enabled':True
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},
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'SphinxPreprocessor': {
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'enabled':True
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},
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'HighlightMagicsPreprocessor': {
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'enabled':True
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}
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})
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c.merge(super().default_config)
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return c
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def from_notebook_node(self, nb, resources=None, **kw):
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langinfo = nb.metadata.get('language_info', {})
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lexer = langinfo.get('pygments_lexer', langinfo.get('name', None))
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highlight_code = self.filters.get('highlight_code', Highlight2Latex(pygments_lexer=lexer, parent=self))
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self.register_filter('highlight_code', highlight_code)
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return super().from_notebook_node(nb, resources, **kw)
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def _create_environment(self):
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environment = super()._create_environment()
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# Set special Jinja2 syntax that will not conflict with latex.
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environment.block_start_string = "((*"
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environment.block_end_string = "*))"
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environment.variable_start_string = "((("
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environment.variable_end_string = ")))"
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environment.comment_start_string = "((="
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environment.comment_end_string = "=))"
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return environment
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