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nbsphinx.py
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nbsphinx.py
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# Copyright (c) 2015-2020 Matthias Geier
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
# THE SOFTWARE.
"""Jupyter Notebook Tools for Sphinx.
https://nbsphinx.readthedocs.io/
"""
__version__ = '0.7.1'
import collections.abc
import copy
import html
import json
import os
import re
import subprocess
from urllib.parse import unquote
import uuid
import docutils
from docutils.parsers import rst
import jinja2
import nbconvert
import nbformat
import sphinx
import sphinx.directives
import sphinx.environment
import sphinx.errors
import sphinx.transforms.post_transforms.images
from sphinx.util.matching import patmatch
import traitlets
_ipynbversion = 4
logger = sphinx.util.logging.getLogger(__name__)
_BROKEN_THUMBNAIL = object()
# See nbconvert/exporters/html.py:
DISPLAY_DATA_PRIORITY_HTML = (
'application/vnd.jupyter.widget-state+json',
'application/vnd.jupyter.widget-view+json',
'application/javascript',
'text/html',
'text/markdown',
'image/svg+xml',
'text/latex',
'image/png',
'image/jpeg',
'text/plain',
)
# See nbconvert/exporters/latex.py:
DISPLAY_DATA_PRIORITY_LATEX = (
'text/latex',
'application/pdf',
'image/png',
'image/jpeg',
'image/svg+xml',
'text/markdown',
'text/plain',
)
# The default rst template name is changing in nbconvert 6, so we substitute
# it in to the *extends* directive.
RST_TEMPLATE = """
{% extends '__RST_DEFAULT_TEMPLATE__' %}
{% macro insert_empty_lines(text) %}
{%- set before, after = text | get_empty_lines %}
{%- if before %}
:empty-lines-before: {{ before }}
{%- endif %}
{%- if after %}
:empty-lines-after: {{ after }}
{%- endif %}
{%- endmacro %}
{% block any_cell %}
{%- if cell.metadata.nbsphinx != 'hidden' %}
{{ super() }}
..
{# Empty comment to make sure the preceding directive (if any) is closed #}
{% endif %}
{%- endblock any_cell %}
{% block input -%}
.. nbinput:: {% if cell.metadata.magics_language -%}
{{ cell.metadata.magics_language }}
{%- elif nb.metadata.language_info -%}
{{ nb.metadata.language_info.pygments_lexer or nb.metadata.language_info.name }}
{%- else -%}
{{ resources.codecell_lexer }}
{%- endif -%}
{{ insert_empty_lines(cell.source) }}
{%- if cell.execution_count %}
:execution-count: {{ cell.execution_count }}
{%- endif %}
{%- if not cell.outputs %}
:no-output:
{%- endif %}
{{ cell.source.strip('\n') | indent }}
{% endblock input %}
{% macro insert_nboutput(datatype, output, cell) -%}
.. nboutput::
{%- if output.output_type == 'execute_result' and cell.execution_count %}
:execution-count: {{ cell.execution_count }}
{%- endif %}
{%- if output != cell.outputs[-1] %}
:more-to-come:
{%- endif %}
{%- if output.name == 'stderr' %}
:class: stderr
{%- endif %}
{%- if datatype != 'text/plain' %}
:fancy:
{%- endif %}
{%- if datatype == 'text/plain' %}
.. rst-class:: highlight
.. raw:: html
<pre>
{{ output.data[datatype] | ansi2html | indent | indent }}
</pre>
.. raw:: latex
\\begin{sphinxVerbatim}[commandchars=\\\\\\{\\}]
{{ output.data[datatype] | escape_latex | ansi2latex | indent | indent }}
\\end{sphinxVerbatim}
{%- elif datatype in ['image/svg+xml', 'image/png', 'image/jpeg', 'application/pdf'] %}
.. image:: {{ output.metadata.filenames[datatype] | posix_path }}
{%- if datatype in output.metadata %}
:class: no-scaled-link
{%- set width = output.metadata[datatype].width %}
{%- if width %}
:width: {{ width }}
{%- endif %}
{%- set height = output.metadata[datatype].height %}
{%- if height %}
:height: {{ height }}
{% endif %}
{% endif %}
{%- elif datatype in ['text/markdown'] %}
{{ output.data['text/markdown'] | markdown2rst | indent }}
{%- elif datatype in ['text/latex'] %}
.. math::
:nowrap:
{{ output.data['text/latex'] | indent | indent }}
{%- elif datatype == 'text/html' %}
:class: rendered_html
.. raw:: html
{{ output.data['text/html'] | indent | indent }}
{%- elif datatype == 'application/javascript' %}
.. raw:: html
<div class="output_javascript"></div>
<script type="text/javascript">
var element = document.currentScript.previousSibling.previousSibling;
{{ output.data['application/javascript'] | indent | indent }}
</script>
{%- elif datatype.startswith('application/vnd.jupyter') and datatype.endswith('+json') %}
.. raw:: html
<script type="{{ datatype }}">{{ output.data[datatype] | json_dumps }}</script>
{% else %}
.. nbwarning:: Data type cannot be displayed: {{ datatype }}
{%- endif %}
{% endmacro %}
{% block nboutput -%}
..
{# Empty comment to make sure the preceding directive (if any) is closed #}
{%- set html_datatype, latex_datatype = output | get_output_type %}
{%- if html_datatype == latex_datatype %}
{{ insert_nboutput(html_datatype, output, cell) }}
{% else %}
.. only:: html
{{ insert_nboutput(html_datatype, output, cell) | indent }}
.. only:: latex
{{ insert_nboutput(latex_datatype, output, cell) | indent }}
{% endif %}
{% endblock nboutput %}
{% block execute_result %}{{ self.nboutput() }}{% endblock execute_result %}
{% block display_data %}{{ self.nboutput() }}{% endblock display_data %}
{% block stream %}{{ self.nboutput() }}{% endblock stream %}
{% block error %}{{ self.nboutput() }}{% endblock error %}
{% block markdowncell %}
{%- if 'nbsphinx-gallery' in cell.metadata
or 'nbsphinx-gallery' in cell.metadata.tags
or 'nbsphinx-toctree' in cell.metadata
or 'nbsphinx-toctree' in cell.metadata.tags %}
{{ cell | extract_gallery_or_toctree }}
{%- else %}
{{ cell | save_attachments or super() | replace_attachments }}
{% endif %}
{% endblock markdowncell %}
{% block rawcell %}
{%- set raw_mimetype = cell.metadata.get('raw_mimetype', '').lower() %}
{%- if raw_mimetype == '' %}
.. raw:: html
{{ cell.source | indent }}
.. raw:: latex
{{ cell.source | indent }}
{%- elif raw_mimetype == 'text/html' %}
.. raw:: html
{{ cell.source | indent }}
{%- elif raw_mimetype == 'text/latex' %}
.. raw:: latex
{{ cell.source | indent }}
{%- elif raw_mimetype == 'text/markdown' %}
{{ cell.source | markdown2rst }}
{%- elif raw_mimetype == 'text/restructuredtext' %}
{{ cell.source }}
{% endif %}
{% endblock rawcell %}
{% block footer %}
{% if 'application/vnd.jupyter.widget-state+json' in nb.metadata.widgets %}
.. raw:: html
<script type="application/vnd.jupyter.widget-state+json">
{{ nb.metadata.widgets['application/vnd.jupyter.widget-state+json'] | json_dumps }}
</script>
{% endif %}
{{ super() }}
{% endblock footer %}
""".replace('__RST_DEFAULT_TEMPLATE__', nbconvert.RSTExporter().template_file)
LATEX_PREAMBLE = r"""
% Jupyter Notebook code cell colors
\definecolor{nbsphinxin}{HTML}{307FC1}
\definecolor{nbsphinxout}{HTML}{BF5B3D}
\definecolor{nbsphinx-code-bg}{HTML}{F5F5F5}
\definecolor{nbsphinx-code-border}{HTML}{E0E0E0}
\definecolor{nbsphinx-stderr}{HTML}{FFDDDD}
% ANSI colors for output streams and traceback highlighting
\definecolor{ansi-black}{HTML}{3E424D}
\definecolor{ansi-black-intense}{HTML}{282C36}
\definecolor{ansi-red}{HTML}{E75C58}
\definecolor{ansi-red-intense}{HTML}{B22B31}
\definecolor{ansi-green}{HTML}{00A250}
\definecolor{ansi-green-intense}{HTML}{007427}
\definecolor{ansi-yellow}{HTML}{DDB62B}
\definecolor{ansi-yellow-intense}{HTML}{B27D12}
\definecolor{ansi-blue}{HTML}{208FFB}
\definecolor{ansi-blue-intense}{HTML}{0065CA}
\definecolor{ansi-magenta}{HTML}{D160C4}
\definecolor{ansi-magenta-intense}{HTML}{A03196}
\definecolor{ansi-cyan}{HTML}{60C6C8}
\definecolor{ansi-cyan-intense}{HTML}{258F8F}
\definecolor{ansi-white}{HTML}{C5C1B4}
\definecolor{ansi-white-intense}{HTML}{A1A6B2}
\definecolor{ansi-default-inverse-fg}{HTML}{FFFFFF}
\definecolor{ansi-default-inverse-bg}{HTML}{000000}
% Define an environment for non-plain-text code cell outputs (e.g. images)
\makeatletter
\newenvironment{nbsphinxfancyoutput}{%
% Avoid fatal error with framed.sty if graphics too long to fit on one page
\let\sphinxincludegraphics\nbsphinxincludegraphics
\nbsphinx@image@maxheight\textheight
\advance\nbsphinx@image@maxheight -2\fboxsep % default \fboxsep 3pt
\advance\nbsphinx@image@maxheight -2\fboxrule % default \fboxrule 0.4pt
\advance\nbsphinx@image@maxheight -\baselineskip
\def\nbsphinxfcolorbox{\spx@fcolorbox{nbsphinx-code-border}{white}}%
\def\FrameCommand{\nbsphinxfcolorbox\nbsphinxfancyaddprompt\@empty}%
\def\FirstFrameCommand{\nbsphinxfcolorbox\nbsphinxfancyaddprompt\sphinxVerbatim@Continues}%
\def\MidFrameCommand{\nbsphinxfcolorbox\sphinxVerbatim@Continued\sphinxVerbatim@Continues}%
\def\LastFrameCommand{\nbsphinxfcolorbox\sphinxVerbatim@Continued\@empty}%
\MakeFramed{\advance\hsize-\width\@totalleftmargin\z@\linewidth\hsize\@setminipage}%
\lineskip=1ex\lineskiplimit=1ex\raggedright%
}{\par\unskip\@minipagefalse\endMakeFramed}
\makeatother
\newbox\nbsphinxpromptbox
\def\nbsphinxfancyaddprompt{\ifvoid\nbsphinxpromptbox\else
\kern\fboxrule\kern\fboxsep
\copy\nbsphinxpromptbox
\kern-\ht\nbsphinxpromptbox\kern-\dp\nbsphinxpromptbox
\kern-\fboxsep\kern-\fboxrule\nointerlineskip
\fi}
\newlength\nbsphinxcodecellspacing
\setlength{\nbsphinxcodecellspacing}{0pt}
% Define support macros for attaching opening and closing lines to notebooks
\newsavebox\nbsphinxbox
\makeatletter
\newcommand{\nbsphinxstartnotebook}[1]{%
\par
% measure needed space
\setbox\nbsphinxbox\vtop{{#1\par}}
% reserve some space at bottom of page, else start new page
\needspace{\dimexpr2.5\baselineskip+\ht\nbsphinxbox+\dp\nbsphinxbox}
% mimick vertical spacing from \section command
\addpenalty\@secpenalty
\@tempskipa 3.5ex \@plus 1ex \@minus .2ex\relax
\addvspace\@tempskipa
{\Large\@tempskipa\baselineskip
\advance\@tempskipa-\prevdepth
\advance\@tempskipa-\ht\nbsphinxbox
\ifdim\@tempskipa>\z@
\vskip \@tempskipa
\fi}
\unvbox\nbsphinxbox
% if notebook starts with a \section, prevent it from adding extra space
\@nobreaktrue\everypar{\@nobreakfalse\everypar{}}%
% compensate the parskip which will get inserted by next paragraph
\nobreak\vskip-\parskip
% do not break here
\nobreak
}% end of \nbsphinxstartnotebook
\newcommand{\nbsphinxstopnotebook}[1]{%
\par
% measure needed space
\setbox\nbsphinxbox\vbox{{#1\par}}
\nobreak % it updates page totals
\dimen@\pagegoal
\advance\dimen@-\pagetotal \advance\dimen@-\pagedepth
\advance\dimen@-\ht\nbsphinxbox \advance\dimen@-\dp\nbsphinxbox
\ifdim\dimen@<\z@
% little space left
\unvbox\nbsphinxbox
\kern-.8\baselineskip
\nobreak\vskip\z@\@plus1fil
\penalty100
\vskip\z@\@plus-1fil
\kern.8\baselineskip
\else
\unvbox\nbsphinxbox
\fi
}% end of \nbsphinxstopnotebook
% Ensure height of an included graphics fits in nbsphinxfancyoutput frame
\newdimen\nbsphinx@image@maxheight % set in nbsphinxfancyoutput environment
\newcommand*{\nbsphinxincludegraphics}[2][]{%
\gdef\spx@includegraphics@options{#1}%
\setbox\spx@image@box\hbox{\includegraphics[#1,draft]{#2}}%
\in@false
\ifdim \wd\spx@image@box>\linewidth
\g@addto@macro\spx@includegraphics@options{,width=\linewidth}%
\in@true
\fi
% no rotation, no need to worry about depth
\ifdim \ht\spx@image@box>\nbsphinx@image@maxheight
\g@addto@macro\spx@includegraphics@options{,height=\nbsphinx@image@maxheight}%
\in@true
\fi
\ifin@
\g@addto@macro\spx@includegraphics@options{,keepaspectratio}%
\fi
\setbox\spx@image@box\box\voidb@x % clear memory
\expandafter\includegraphics\expandafter[\spx@includegraphics@options]{#2}%
}% end of "\MakeFrame"-safe variant of \sphinxincludegraphics
\makeatother
\makeatletter
\renewcommand*\sphinx@verbatim@nolig@list{\do\'\do\`}
\begingroup
\catcode`'=\active
\let\nbsphinx@noligs\@noligs
\g@addto@macro\nbsphinx@noligs{\let'\PYGZsq}
\endgroup
\makeatother
\renewcommand*\sphinxbreaksbeforeactivelist{\do\<\do\"\do\'}
\renewcommand*\sphinxbreaksafteractivelist{\do\.\do\,\do\:\do\;\do\?\do\!\do\/\do\>\do\-}
\makeatletter
\fvset{codes*=\sphinxbreaksattexescapedchars\do\^\^\let\@noligs\nbsphinx@noligs}
\makeatother
"""
CSS_STRING = """
/* CSS for nbsphinx extension */
/* remove conflicting styling from Sphinx themes */
div.nbinput.container div.prompt *,
div.nboutput.container div.prompt *,
div.nbinput.container div.input_area pre,
div.nboutput.container div.output_area pre,
div.nbinput.container div.input_area .highlight,
div.nboutput.container div.output_area .highlight {
border: none;
padding: 0;
margin: 0;
box-shadow: none;
}
div.nbinput.container div.prompt *,
div.nboutput.container div.prompt * {
background: none;
}
div.nboutput.container div.output_area .highlight,
div.nboutput.container div.output_area pre {
background: unset;
}
div.nboutput.container div.output_area div.highlight {
color: unset; /* override Pygments text color */
}
/* avoid gaps between output lines */
div.nboutput.container div[class*=highlight] pre {
line-height: normal;
}
/* input/output containers */
div.nbinput.container,
div.nboutput.container {
display: -webkit-flex;
display: flex;
align-items: flex-start;
margin: 0;
width: 100%%;
}
@media (max-width: %(nbsphinx_responsive_width)s) {
div.nbinput.container,
div.nboutput.container {
flex-direction: column;
}
}
/* input container */
div.nbinput.container {
padding-top: 5px;
}
/* last container */
div.nblast.container {
padding-bottom: 5px;
}
/* input prompt */
div.nbinput.container div.prompt pre {
color: #307FC1;
}
/* output prompt */
div.nboutput.container div.prompt pre {
color: #BF5B3D;
}
/* all prompts */
div.nbinput.container div.prompt,
div.nboutput.container div.prompt {
width: %(nbsphinx_prompt_width)s;
padding-top: 5px;
position: relative;
user-select: none;
}
div.nbinput.container div.prompt > div,
div.nboutput.container div.prompt > div {
position: absolute;
right: 0;
margin-right: 0.3ex;
}
@media (max-width: %(nbsphinx_responsive_width)s) {
div.nbinput.container div.prompt,
div.nboutput.container div.prompt {
width: unset;
text-align: left;
padding: 0.4em;
}
div.nboutput.container div.prompt.empty {
padding: 0;
}
div.nbinput.container div.prompt > div,
div.nboutput.container div.prompt > div {
position: unset;
}
}
/* disable scrollbars on prompts */
div.nbinput.container div.prompt pre,
div.nboutput.container div.prompt pre {
overflow: hidden;
}
/* input/output area */
div.nbinput.container div.input_area,
div.nboutput.container div.output_area {
-webkit-flex: 1;
flex: 1;
overflow: auto;
}
@media (max-width: %(nbsphinx_responsive_width)s) {
div.nbinput.container div.input_area,
div.nboutput.container div.output_area {
width: 100%%;
}
}
/* input area */
div.nbinput.container div.input_area {
border: 1px solid #e0e0e0;
border-radius: 2px;
/*background: #f5f5f5;*/
}
/* override MathJax center alignment in output cells */
div.nboutput.container div[class*=MathJax] {
text-align: left !important;
}
/* override sphinx.ext.imgmath center alignment in output cells */
div.nboutput.container div.math p {
text-align: left;
}
/* standard error */
div.nboutput.container div.output_area.stderr {
background: #fdd;
}
/* ANSI colors */
.ansi-black-fg { color: #3E424D; }
.ansi-black-bg { background-color: #3E424D; }
.ansi-black-intense-fg { color: #282C36; }
.ansi-black-intense-bg { background-color: #282C36; }
.ansi-red-fg { color: #E75C58; }
.ansi-red-bg { background-color: #E75C58; }
.ansi-red-intense-fg { color: #B22B31; }
.ansi-red-intense-bg { background-color: #B22B31; }
.ansi-green-fg { color: #00A250; }
.ansi-green-bg { background-color: #00A250; }
.ansi-green-intense-fg { color: #007427; }
.ansi-green-intense-bg { background-color: #007427; }
.ansi-yellow-fg { color: #DDB62B; }
.ansi-yellow-bg { background-color: #DDB62B; }
.ansi-yellow-intense-fg { color: #B27D12; }
.ansi-yellow-intense-bg { background-color: #B27D12; }
.ansi-blue-fg { color: #208FFB; }
.ansi-blue-bg { background-color: #208FFB; }
.ansi-blue-intense-fg { color: #0065CA; }
.ansi-blue-intense-bg { background-color: #0065CA; }
.ansi-magenta-fg { color: #D160C4; }
.ansi-magenta-bg { background-color: #D160C4; }
.ansi-magenta-intense-fg { color: #A03196; }
.ansi-magenta-intense-bg { background-color: #A03196; }
.ansi-cyan-fg { color: #60C6C8; }
.ansi-cyan-bg { background-color: #60C6C8; }
.ansi-cyan-intense-fg { color: #258F8F; }
.ansi-cyan-intense-bg { background-color: #258F8F; }
.ansi-white-fg { color: #C5C1B4; }
.ansi-white-bg { background-color: #C5C1B4; }
.ansi-white-intense-fg { color: #A1A6B2; }
.ansi-white-intense-bg { background-color: #A1A6B2; }
.ansi-default-inverse-fg { color: #FFFFFF; }
.ansi-default-inverse-bg { background-color: #000000; }
.ansi-bold { font-weight: bold; }
.ansi-underline { text-decoration: underline; }
div.nbinput.container div.input_area div[class*=highlight] > pre,
div.nboutput.container div.output_area div[class*=highlight] > pre,
div.nboutput.container div.output_area div[class*=highlight].math,
div.nboutput.container div.output_area.rendered_html,
div.nboutput.container div.output_area > div.output_javascript,
div.nboutput.container div.output_area:not(.rendered_html) > img{
padding: 5px;
margin: 0;
}
/* fix copybtn overflow problem in chromium (needed for 'sphinx_copybutton') */
div.nbinput.container div.input_area > div[class^='highlight'],
div.nboutput.container div.output_area > div[class^='highlight']{
overflow-y: hidden;
}
/* hide copybtn icon on prompts (needed for 'sphinx_copybutton') */
.prompt a.copybtn {
display: none;
}
/* Some additional styling taken form the Jupyter notebook CSS */
div.rendered_html table {
border: none;
border-collapse: collapse;
border-spacing: 0;
color: black;
font-size: 12px;
table-layout: fixed;
}
div.rendered_html thead {
border-bottom: 1px solid black;
vertical-align: bottom;
}
div.rendered_html tr,
div.rendered_html th,
div.rendered_html td {
text-align: right;
vertical-align: middle;
padding: 0.5em 0.5em;
line-height: normal;
white-space: normal;
max-width: none;
border: none;
}
div.rendered_html th {
font-weight: bold;
}
div.rendered_html tbody tr:nth-child(odd) {
background: #f5f5f5;
}
div.rendered_html tbody tr:hover {
background: rgba(66, 165, 245, 0.2);
}
"""
CSS_STRING_READTHEDOCS = """
/* CSS overrides for sphinx_rtd_theme */
/* 24px margin */
.nbinput.nblast.container,
.nboutput.nblast.container {
margin-bottom: 19px; /* padding has already 5px */
}
/* ... except between code cells! */
.nblast.container + .nbinput.container {
margin-top: -19px;
}
.admonition > p:before {
margin-right: 4px; /* make room for the exclamation icon */
}
/* Fix math alignment, see https://github.com/rtfd/sphinx_rtd_theme/pull/686 */
.math {
text-align: unset;
}
"""
CSS_STRING_CLOUD = """
/* CSS overrides for cloud theme */
/* nicer titles and more space for info and warning logos */
div.admonition p.admonition-title {
background: rgba(0, 0, 0, .05);
margin: .5em -1em;
margin-top: -.5em !important;
padding: .5em .5em .5em 2.65em;
}
/* indent single paragraph */
div.admonition {
text-indent: 20px;
}
/* don't indent multiple paragraphs */
div.admonition > p {
text-indent: 0;
}
/* remove excessive padding */
div.admonition.inline-title p.admonition-title {
padding-left: .2em;
}
"""
class Exporter(nbconvert.RSTExporter):
"""Convert Jupyter notebooks to reStructuredText.
Uses nbconvert to convert Jupyter notebooks to a reStructuredText
string with custom reST directives for input and output cells.
Notebooks without output cells are automatically executed before
conversion.
"""
def __init__(self, execute='auto', kernel_name='', execute_arguments=[],
allow_errors=False, timeout=None, codecell_lexer='none'):
"""Initialize the Exporter."""
# NB: The following stateful Jinja filters are a hack until
# template-based processing is dropped
# (https://github.com/spatialaudio/nbsphinx/issues/36) or someone
# comes up with a better idea.
# NB: This instance-local state makes the methods non-reentrant!
attachment_storage = []
def save_attachments(cell):
for filename, bundle in cell.get('attachments', {}).items():
attachment_storage.append((filename, bundle))
def replace_attachments(text):
for filename, bundle in attachment_storage:
# For now, this works only if there is a single MIME bundle
(mime_type, data), = bundle.items()
text = re.sub(
r'^(\s*\.\. (\|[^|]*\| image|figure)::) attachment:{0}$'
.format(filename),
r'\1 data:{0};base64,{1}'.format(mime_type, data),
text, flags=re.MULTILINE)
del attachment_storage[:]
return text
self._execute = execute
self._kernel_name = kernel_name
self._execute_arguments = execute_arguments
self._allow_errors = allow_errors
self._timeout = timeout
self._codecell_lexer = codecell_lexer
loader = jinja2.DictLoader({'nbsphinx-rst.tpl': RST_TEMPLATE})
super(Exporter, self).__init__(
template_file='nbsphinx-rst.tpl', extra_loaders=[loader],
config=traitlets.config.Config({
'HighlightMagicsPreprocessor': {'enabled': True},
# Work around https://github.com/jupyter/nbconvert/issues/720:
'RegexRemovePreprocessor': {'enabled': False},
}),
filters={
'convert_pandoc': convert_pandoc,
'markdown2rst': markdown2rst,
'get_empty_lines': _get_empty_lines,
'extract_gallery_or_toctree': _extract_gallery_or_toctree,
'save_attachments': save_attachments,
'replace_attachments': replace_attachments,
'get_output_type': _get_output_type,
'json_dumps': json.dumps,
'basename': os.path.basename,
'dirname': os.path.dirname,
})
def from_notebook_node(self, nb, resources=None, **kw):
nb = copy.deepcopy(nb)
if resources is None:
resources = {}
else:
resources = copy.deepcopy(resources)
# Set default codecell lexer
resources['codecell_lexer'] = self._codecell_lexer
nbsphinx_metadata = nb.metadata.get('nbsphinx', {})
execute = nbsphinx_metadata.get('execute', self._execute)
if execute not in ('always', 'never', 'auto'):
raise ValueError('invalid execute option: {!r}'.format(execute))
auto_execute = (
execute == 'auto' and
# At least one code cell actually containing source code:
any(c.source for c in nb.cells if c.cell_type == 'code') and
# No outputs, not even a prompt number:
not any(c.get('outputs') or c.get('execution_count')
for c in nb.cells if c.cell_type == 'code')
)
if auto_execute or execute == 'always':
allow_errors = nbsphinx_metadata.get(
'allow_errors', self._allow_errors)
timeout = nbsphinx_metadata.get('timeout', self._timeout)
pp = nbconvert.preprocessors.ExecutePreprocessor(
kernel_name=self._kernel_name,
extra_arguments=self._execute_arguments,
allow_errors=allow_errors, timeout=timeout)
nb, resources = pp.preprocess(nb, resources)
if 'nbsphinx_save_notebook' in resources:
# Save *executed* notebook *before* the Exporter can change it:
nbformat.write(nb, resources['nbsphinx_save_notebook'])
# Call into RSTExporter
rststr, resources = super(Exporter, self).from_notebook_node(
nb, resources, **kw)
orphan = nbsphinx_metadata.get('orphan', False)
if orphan is True:
resources['nbsphinx_orphan'] = True
elif orphan is not False:
raise ValueError('invalid orphan option: {!r}'.format(orphan))
if 'application/vnd.jupyter.widget-state+json' in nb.metadata.get(
'widgets', {}):
resources['nbsphinx_widgets'] = True
thumbnail = {}
def warning(msg, *args):
logger.warning(
'"nbsphinx-thumbnail": ' + msg, *args,
location=resources.get('nbsphinx_docname'),
type='nbsphinx', subtype='thumbnail')
thumbnail['filename'] = _BROKEN_THUMBNAIL
for cell_index, cell in enumerate(nb.cells):
if 'nbsphinx-thumbnail' in cell.metadata:
data = cell.metadata['nbsphinx-thumbnail'].copy()
output_index = data.pop('output-index', -1)
tooltip = data.pop('tooltip', '')
if data:
warning('Invalid key(s): %s', set(data))
break
elif 'nbsphinx-thumbnail' in cell.metadata.get('tags', []):
output_index = -1
tooltip = ''
else:
continue
if cell.cell_type != 'code':
warning('Only allowed in code cells; cell %s has type "%s"',
cell_index, cell.cell_type)
break
if thumbnail:
warning('Only allowed once per notebook')
break
if not cell.outputs:
warning('No outputs in cell %s', cell_index)
break
if tooltip:
thumbnail['tooltip'] = tooltip
if output_index == -1:
output_index = len(cell.outputs) - 1
elif output_index >= len(cell.outputs):
warning('Invalid "output-index" in cell %s: %s',
cell_index, output_index)
break
out = cell.outputs[output_index]
if out.output_type not in {'display_data', 'execute_result'}:
warning('Unsupported output type in cell %s/output %s: "%s"',
cell_index, output_index, out.output_type)
break
for mime_type in DISPLAY_DATA_PRIORITY_HTML:
if mime_type not in out.data:
continue
if mime_type == 'image/svg+xml':
suffix = '.svg'
elif mime_type == 'image/png':
suffix = '.png'
elif mime_type == 'image/jpeg':
suffix = '.jpg'
else:
continue
thumbnail['filename'] = '{}_{}_{}{}'.format(
resources['unique_key'],
cell_index,
output_index,
suffix,
)
break
else:
warning('Unsupported MIME type(s) in cell %s/output %s: %s',
cell_index, output_index, set(out.data))
break
resources['nbsphinx_thumbnail'] = thumbnail
return rststr, resources
class NotebookParser(rst.Parser):
"""Sphinx source parser for Jupyter notebooks.
Uses nbsphinx.Exporter to convert notebook content to a
reStructuredText string, which is then parsed by Sphinx's built-in
reST parser.
"""
supported = 'jupyter_notebook',
def get_transforms(self):
"""List of transforms for documents parsed by this parser."""
return rst.Parser.get_transforms(self) + [
CreateNotebookSectionAnchors,
ReplaceAlertDivs,
CopyLinkedFiles,
]
def parse(self, inputstring, document):
"""Parse *inputstring*, write results to *document*.
*inputstring* is either the JSON representation of a notebook,
or a paragraph of text coming from the Sphinx translation
machinery.
Note: For now, the translation strings use reST formatting,
because the NotebookParser uses reST as intermediate
representation.
However, there are plans to remove this intermediate step
(https://github.com/spatialaudio/nbsphinx/issues/36), and after
that, the translated strings will most likely be parsed as
CommonMark.
If the configuration value "nbsphinx_custom_formats" is
specified, the input string is converted to the Jupyter notebook
format with the given conversion function.
"""
env = document.settings.env
formats = {
'.ipynb': lambda s: nbformat.reads(s, as_version=_ipynbversion)}
formats.update(env.config.nbsphinx_custom_formats)
srcfile = env.doc2path(env.docname, base=None)
for format, converter in formats.items():
if srcfile.endswith(format):
break
else:
raise NotebookError(
'No converter was found for {!r}'.format(srcfile))
if (isinstance(converter, collections.abc.Sequence) and
not isinstance(converter, str)):
if len(converter) != 2:
raise NotebookError(
'The values of nbsphinx_custom_formats must be '
'either strings or 2-element sequences')
converter, kwargs = converter
else:
kwargs = {}
if isinstance(converter, str):
converter = sphinx.util.import_object(converter)
try:
nb = converter(inputstring, **kwargs)
except Exception:
# NB: The use of the RST parser is temporary!
rst.Parser.parse(self, inputstring, document)
return
srcdir = os.path.dirname(env.doc2path(env.docname))
auxdir = env.nbsphinx_auxdir
resources = {}
# Working directory for ExecutePreprocessor
resources['metadata'] = {'path': srcdir}
# Sphinx doesn't accept absolute paths in images etc.
resources['output_files_dir'] = os.path.relpath(auxdir, srcdir)
resources['unique_key'] = re.sub('[/ ]', '_', env.docname)
resources['nbsphinx_docname'] = env.docname
# NB: The source file could have a different suffix
# if nbsphinx_custom_formats is used.
notebookfile = env.docname + '.ipynb'
env.nbsphinx_notebooks[env.docname] = notebookfile
auxfile = os.path.join(auxdir, notebookfile)
sphinx.util.ensuredir(os.path.dirname(auxfile))
resources['nbsphinx_save_notebook'] = auxfile
exporter = Exporter(
execute=env.config.nbsphinx_execute,
kernel_name=env.config.nbsphinx_kernel_name,
execute_arguments=env.config.nbsphinx_execute_arguments,
allow_errors=env.config.nbsphinx_allow_errors,
timeout=env.config.nbsphinx_timeout,
codecell_lexer=env.config.nbsphinx_codecell_lexer,