|
|
"""Base classes for the notebook conversion pipeline.
|
|
|
|
|
|
This module defines Converter, from which all objects designed to implement
|
|
|
a conversion of IPython notebooks to some other format should inherit.
|
|
|
"""
|
|
|
#-----------------------------------------------------------------------------
|
|
|
# Copyright (c) 2012, the IPython Development Team.
|
|
|
#
|
|
|
# Distributed under the terms of the Modified BSD License.
|
|
|
#
|
|
|
# The full license is in the file COPYING.txt, distributed with this software.
|
|
|
#-----------------------------------------------------------------------------
|
|
|
|
|
|
#-----------------------------------------------------------------------------
|
|
|
# Imports
|
|
|
#-----------------------------------------------------------------------------
|
|
|
|
|
|
from __future__ import print_function, absolute_import
|
|
|
import converters.transformers as trans
|
|
|
from converters.jinja_filters import (python_comment, indent,
|
|
|
rm_fake, remove_ansi, markdown, highlight,
|
|
|
ansi2html, markdown2latex, escape_tex)
|
|
|
|
|
|
from converters.utils import markdown2rst
|
|
|
|
|
|
|
|
|
|
|
|
# Stdlib imports
|
|
|
import io
|
|
|
import os
|
|
|
from IPython.utils import path
|
|
|
from IPython.utils.traitlets import MetaHasTraits
|
|
|
|
|
|
from jinja2 import Environment, FileSystemLoader
|
|
|
env = Environment(
|
|
|
loader=FileSystemLoader([
|
|
|
'./templates/',
|
|
|
'./templates/skeleton/',
|
|
|
]),
|
|
|
extensions=['jinja2.ext.loopcontrols']
|
|
|
)
|
|
|
|
|
|
texenv = Environment(
|
|
|
loader=FileSystemLoader([
|
|
|
'./templates/tex/',
|
|
|
'./templates/skeleton/tex/',
|
|
|
]),
|
|
|
extensions=['jinja2.ext.loopcontrols']
|
|
|
)
|
|
|
|
|
|
# IPython imports
|
|
|
from IPython.nbformat import current as nbformat
|
|
|
from IPython.config.configurable import Configurable
|
|
|
from IPython.utils.traitlets import ( Unicode, Any, List, Bool)
|
|
|
|
|
|
#-----------------------------------------------------------------------------
|
|
|
# Class declarations
|
|
|
#-----------------------------------------------------------------------------
|
|
|
class ConversionException(Exception):
|
|
|
pass
|
|
|
|
|
|
#todo move this out
|
|
|
def header_body():
|
|
|
"""Return the body of the header as a list of strings."""
|
|
|
|
|
|
from pygments.formatters import HtmlFormatter
|
|
|
|
|
|
header = []
|
|
|
static = os.path.join(path.get_ipython_package_dir(),
|
|
|
'frontend', 'html', 'notebook', 'static',
|
|
|
)
|
|
|
here = os.path.split(os.path.realpath(__file__))[0]
|
|
|
css = os.path.join(static, 'css')
|
|
|
for sheet in [
|
|
|
# do we need jquery and prettify?
|
|
|
# os.path.join(static, 'jquery', 'css', 'themes', 'base',
|
|
|
# 'jquery-ui.min.css'),
|
|
|
# os.path.join(static, 'prettify', 'prettify.css'),
|
|
|
os.path.join(css, 'boilerplate.css'),
|
|
|
os.path.join(css, 'fbm.css'),
|
|
|
os.path.join(css, 'notebook.css'),
|
|
|
os.path.join(css, 'renderedhtml.css'),
|
|
|
# our overrides:
|
|
|
os.path.join(here, '..', 'css', 'static_html.css'),
|
|
|
]:
|
|
|
|
|
|
with io.open(sheet, encoding='utf-8') as f:
|
|
|
s = f.read()
|
|
|
header.append(s)
|
|
|
|
|
|
pygments_css = HtmlFormatter().get_style_defs('.highlight')
|
|
|
header.append(pygments_css)
|
|
|
return header
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
inlining = {}
|
|
|
inlining['css'] = header_body()
|
|
|
|
|
|
|
|
|
|
|
|
texenv.block_start_string = '((*'
|
|
|
texenv.block_end_string = '*))'
|
|
|
texenv.variable_start_string = '((('
|
|
|
texenv.variable_end_string = ')))'
|
|
|
texenv.comment_start_string = '((='
|
|
|
texenv.comment_end_string = '=))'
|
|
|
texenv.filters['escape_tex'] = escape_tex
|
|
|
|
|
|
|
|
|
class ConverterTemplate(Configurable):
|
|
|
""" A Jinja2 base converter templates
|
|
|
|
|
|
Preprocess the ipynb files, feed it throug jinja templates,
|
|
|
and spit an converted files and a data object with other data
|
|
|
|
|
|
shoudl be mostly configurable
|
|
|
"""
|
|
|
|
|
|
display_data_priority = List(['html', 'pdf', 'svg', 'latex', 'png', 'jpg', 'jpeg' , 'text'],
|
|
|
config=True,
|
|
|
help= """
|
|
|
An ordered list of prefered output type, the first
|
|
|
encounterd will usually be used when converting discarding
|
|
|
the others.
|
|
|
"""
|
|
|
)
|
|
|
|
|
|
pre_transformer_order = List(['haspyout_transformer'],
|
|
|
config=True,
|
|
|
help= """
|
|
|
An ordered list of pre transformer to apply to the ipynb
|
|
|
file befor running through templates
|
|
|
"""
|
|
|
)
|
|
|
|
|
|
extract_figures = Bool(False,
|
|
|
config=True,
|
|
|
help= """
|
|
|
wether to remove figure data from ipynb and store them in auxiliary
|
|
|
dictionnary
|
|
|
"""
|
|
|
)
|
|
|
|
|
|
tex_environement = Bool(False,
|
|
|
config=True,
|
|
|
help=""" is this a tex environment or not """)
|
|
|
|
|
|
template_file = Unicode('',
|
|
|
config=True,
|
|
|
help=""" Name of the template file to use """ )
|
|
|
#-------------------------------------------------------------------------
|
|
|
# Instance-level attributes that are set in the constructor for this
|
|
|
# class.
|
|
|
#-------------------------------------------------------------------------
|
|
|
infile = Any()
|
|
|
|
|
|
|
|
|
infile_dir = Unicode()
|
|
|
|
|
|
#todo: move to filter
|
|
|
def filter_data_type(self, output):
|
|
|
""" return the first availlable format in priority """
|
|
|
for fmt in self.display_data_priority:
|
|
|
if fmt in output:
|
|
|
return [fmt]
|
|
|
raise Exception("did not found any format I can extract in output, shoudl at lest have one")
|
|
|
|
|
|
preprocessors = []
|
|
|
|
|
|
def __init__(self, preprocessors={}, jinja_filters={}, config=None, **kw):
|
|
|
"""
|
|
|
config: the Configurable confg object to pass around
|
|
|
|
|
|
preprocessors: dict of **availlable** key/value function to run on ipynb json data before conversion
|
|
|
to extract/inline file,
|
|
|
|
|
|
"""
|
|
|
super(ConverterTemplate, self).__init__(config=config, **kw)
|
|
|
self.env = texenv if self.tex_environement else env
|
|
|
self.ext = '.tplx' if self.tex_environement else '.tpl'
|
|
|
|
|
|
for name in self.pre_transformer_order:
|
|
|
transformer = getattr(preprocessors, name, getattr(trans, name, None))
|
|
|
if isinstance(transformer, MetaHasTraits):
|
|
|
transformer = transformer(config=config)
|
|
|
self.preprocessors.append(transformer)
|
|
|
|
|
|
## for compat, remove later
|
|
|
if self.extract_figures:
|
|
|
self.preprocessors.append(trans.ExtractFigureTransformer(config=config))
|
|
|
self.preprocessors.append(trans.RevealHelpTransformer(config=config))
|
|
|
|
|
|
##
|
|
|
self.env.filters['filter_data_type'] = self.filter_data_type
|
|
|
self.env.filters['pycomment'] = python_comment
|
|
|
self.env.filters['indent'] = indent
|
|
|
self.env.filters['rm_fake'] = rm_fake
|
|
|
self.env.filters['rm_ansi'] = remove_ansi
|
|
|
self.env.filters['markdown'] = markdown
|
|
|
self.env.filters['highlight'] = highlight
|
|
|
self.env.filters['ansi2html'] = ansi2html
|
|
|
self.env.filters['markdown2latex'] = markdown2latex
|
|
|
self.env.filters['markdown2rst'] = markdown2rst
|
|
|
for k, v in jinja_filters.iteritems():
|
|
|
self.env.filters[k] = v
|
|
|
|
|
|
self.template = self.env.get_template(self.template_file+self.ext)
|
|
|
|
|
|
|
|
|
def process(self, nb):
|
|
|
"""
|
|
|
preprocess the notebook json for easier use with the templates.
|
|
|
will call all the `preprocessor`s in order before returning it.
|
|
|
"""
|
|
|
|
|
|
# dict of 'resources' that could be made by the preprocessors
|
|
|
# like key/value data to extract files from ipynb like in latex conversion
|
|
|
resources = {}
|
|
|
|
|
|
for preprocessor in self.preprocessors:
|
|
|
nb, resources = preprocessor(nb, resources)
|
|
|
|
|
|
return nb, resources
|
|
|
|
|
|
def convert(self, nb):
|
|
|
""" convert the ipynb file
|
|
|
|
|
|
return both the converted ipynb file and a dict containing potential
|
|
|
other resources
|
|
|
"""
|
|
|
nb, resources = self.process(nb)
|
|
|
return self.template.render(nb=nb, inlining=inlining), resources
|
|
|
|
|
|
|
|
|
def from_filename(self, filename):
|
|
|
"read and parse notebook into NotebookNode called self.nb"
|
|
|
with io.open(filename) as f:
|
|
|
return self.convert(nbformat.read(f, 'json'))
|
|
|
|
|
|
|