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88 lines
2.9 KiB
Python
88 lines
2.9 KiB
Python
"""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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from traitlets import default
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from traitlets.config import Config
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from nbconvert.filters.filter_links import resolve_references
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from nbconvert.filters.highlight import Highlight2Latex
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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_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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yield from super().default_filters()
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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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{
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"NbConvertBase": {
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"display_data_priority": [
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"text/latex",
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"application/pdf",
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"image/png",
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"image/jpeg",
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"image/svg+xml",
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"text/markdown",
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"text/plain",
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]
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},
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"ExtractOutputPreprocessor": {"enabled": True},
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"SVG2PDFPreprocessor": {"enabled": True},
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"LatexPreprocessor": {"enabled": True},
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"SphinxPreprocessor": {"enabled": True},
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"HighlightMagicsPreprocessor": {"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(
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"highlight_code", Highlight2Latex(pygments_lexer=lexer, parent=self)
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)
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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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