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"""
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Exporter that allows Latex Jinja templates to work. Contains logic to
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appropriately prepare IPYNB files for export to LaTeX. Including but
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not limited to escaping LaTeX, fixing math region tags, using special
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tags to circumvent Jinja/Latex syntax conflicts.
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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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# Stdlib imports
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import os
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# IPython imports
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from IPython.utils.traitlets import Unicode, List
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from IPython.config import Config
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from IPython.nbconvert import filters, preprocessors
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from .exporter import Exporter
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#-----------------------------------------------------------------------------
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# Classes and functions
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#-----------------------------------------------------------------------------
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class LatexExporter(Exporter):
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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 tranformers/filters. Inherit from it if
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you are writing your own HTML template and need custom tranformers/filters.
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If you don't need custom tranformers/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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file_extension = Unicode(
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'tex', config=True,
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help="Extension of the file that should be written to disk")
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default_template = Unicode('article', config=True, help="""Template of the
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data format to use. I.E. 'full' or 'basic'""")
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#Latex constants
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default_template_path = Unicode(
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os.path.join("..", "templates", "latex"), config=True,
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help="Path where the template files are located.")
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template_skeleton_path = Unicode(
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os.path.join("..", "templates", "latex", "skeleton"), config=True,
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help="Path where the template skeleton files are located.")
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#Special Jinja2 syntax that will not conflict when exporting latex.
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jinja_comment_block_start = Unicode("((=", config=True)
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jinja_comment_block_end = Unicode("=))", config=True)
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jinja_variable_block_start = Unicode("(((", config=True)
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jinja_variable_block_end = Unicode(")))", config=True)
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jinja_logic_block_start = Unicode("((*", config=True)
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jinja_logic_block_end = Unicode("*))", config=True)
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#Extension that the template files use.
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template_extension = Unicode(".tplx", config=True)
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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' : ['latex', 'pdf', 'png', 'jpg', 'svg', 'jpeg', 'text']
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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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})
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c.merge(super(LatexExporter,self).default_config)
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return c
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