54 lines
1.9 KiB
Python
54 lines
1.9 KiB
Python
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"""Module that allows latex output notebooks to be conditioned before
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they are converted.
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"""
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#-----------------------------------------------------------------------------
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# Copyright (c) 2013, the IPython Development Team.
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#
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# Distributed under the terms of the Modified BSD License.
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#
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# The full license is in the file COPYING.txt, distributed with this software.
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#-----------------------------------------------------------------------------
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#-----------------------------------------------------------------------------
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# Imports
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#-----------------------------------------------------------------------------
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from __future__ import print_function, absolute_import
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from .base import Preprocessor
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from traitlets import Unicode
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#-----------------------------------------------------------------------------
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# Classes
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#-----------------------------------------------------------------------------
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class LatexPreprocessor(Preprocessor):
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"""Preprocessor for latex destined documents.
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Mainly populates the ``latex`` key in the resources dict,
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adding definitions for pygments highlight styles.
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"""
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style = Unicode('default',
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help='Name of the pygments style to use'
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).tag(config=True)
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def preprocess(self, nb, resources):
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"""Preprocessing to apply on each notebook.
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Parameters
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----------
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nb : NotebookNode
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Notebook being converted
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resources : dictionary
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Additional resources used in the conversion process. Allows
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preprocessors to pass variables into the Jinja engine.
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"""
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# Generate Pygments definitions for Latex
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from pygments.formatters import LatexFormatter
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resources.setdefault("latex", {})
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resources["latex"].setdefault("pygments_definitions", LatexFormatter(style=self.style).get_style_defs())
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resources["latex"].setdefault("pygments_style_name", self.style)
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return nb, resources
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