You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
165 lines
6.3 KiB
165 lines
6.3 KiB
# -*- coding: utf-8 -*-
|
|
"""HTML Exporter class"""
|
|
|
|
# Copyright (c) Jupyter Development Team.
|
|
# Distributed under the terms of the Modified BSD License.
|
|
|
|
import os
|
|
import mimetypes
|
|
import base64
|
|
|
|
from traitlets import default, Unicode, Bool
|
|
from traitlets.config import Config
|
|
from jupyter_core.paths import jupyter_path
|
|
from jinja2 import contextfilter
|
|
from jinja2.loaders import split_template_path
|
|
import jinja2
|
|
|
|
from nbconvert.filters.highlight import Highlight2HTML
|
|
from nbconvert.filters.markdown_mistune import IPythonRenderer, MarkdownWithMath
|
|
|
|
from .templateexporter import TemplateExporter
|
|
|
|
|
|
class HTMLExporter(TemplateExporter):
|
|
"""
|
|
Exports a basic HTML document. This exporter assists with the export of
|
|
HTML. Inherit from it if you are writing your own HTML template and need
|
|
custom preprocessors/filters. If you don't need custom preprocessors/
|
|
filters, just change the 'template_file' config option.
|
|
"""
|
|
export_from_notebook = "HTML"
|
|
|
|
anchor_link_text = Unicode(u'¶',
|
|
help="The text used as the text for anchor links.").tag(config=True)
|
|
|
|
exclude_anchor_links = Bool(False,
|
|
help="If anchor links should be included or not.").tag(config=True)
|
|
|
|
require_js_url = Unicode(
|
|
"https://cdnjs.cloudflare.com/ajax/libs/require.js/2.1.10/require.min.js",
|
|
help="""
|
|
URL to load require.js from.
|
|
|
|
Defaults to loading from cdnjs.
|
|
"""
|
|
).tag(config=True)
|
|
|
|
jquery_url = Unicode(
|
|
"https://cdnjs.cloudflare.com/ajax/libs/jquery/2.0.3/jquery.min.js",
|
|
help="""
|
|
URL to load jQuery from.
|
|
|
|
Defaults to loading from cdnjs.
|
|
"""
|
|
).tag(config=True)
|
|
|
|
@default('file_extension')
|
|
def _file_extension_default(self):
|
|
return '.html'
|
|
|
|
@default('template_name')
|
|
def _template_name_default(self):
|
|
return 'lab'
|
|
|
|
@default('template_data_paths')
|
|
def _template_data_paths_default(self):
|
|
return jupyter_path("nbconvert", "templates", "html")
|
|
|
|
|
|
theme = Unicode('light',
|
|
help='Template specific theme(e.g. the JupyterLab CSS theme for the lab template)'
|
|
).tag(config=True)
|
|
|
|
output_mimetype = 'text/html'
|
|
|
|
@property
|
|
def default_config(self):
|
|
c = Config({
|
|
'NbConvertBase': {
|
|
'display_data_priority' : ['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'
|
|
]
|
|
},
|
|
'HighlightMagicsPreprocessor': {
|
|
'enabled':True
|
|
}
|
|
})
|
|
c.merge(super().default_config)
|
|
return c
|
|
|
|
@contextfilter
|
|
def markdown2html(self, context, source):
|
|
"""Markdown to HTML filter respecting the anchor_link_text setting"""
|
|
cell = context.get('cell', {})
|
|
attachments = cell.get('attachments', {})
|
|
renderer = IPythonRenderer(escape=False, attachments=attachments,
|
|
anchor_link_text=self.anchor_link_text,
|
|
exclude_anchor_links=self.exclude_anchor_links)
|
|
return MarkdownWithMath(renderer=renderer).render(source)
|
|
|
|
def default_filters(self):
|
|
for pair in super().default_filters():
|
|
yield pair
|
|
yield ('markdown2html', self.markdown2html)
|
|
|
|
def from_notebook_node(self, nb, resources=None, **kw):
|
|
langinfo = nb.metadata.get('language_info', {})
|
|
lexer = langinfo.get('pygments_lexer', langinfo.get('name', None))
|
|
highlight_code = self.filters.get('highlight_code', Highlight2HTML(pygments_lexer=lexer, parent=self))
|
|
self.register_filter('highlight_code', highlight_code)
|
|
return super().from_notebook_node(nb, resources, **kw)
|
|
|
|
def _init_resources(self, resources):
|
|
def resources_include_css(name):
|
|
env = self.environment
|
|
code = """<style type="text/css">\n%s</style>""" % (env.loader.get_source(env, name)[0])
|
|
return jinja2.Markup(code)
|
|
|
|
def resources_include_js(name):
|
|
env = self.environment
|
|
code = """<script>\n%s</script>""" % (env.loader.get_source(env, name)[0])
|
|
return jinja2.Markup(code)
|
|
|
|
def resources_include_url(name):
|
|
env = self.environment
|
|
mime_type, encoding = mimetypes.guess_type(name)
|
|
try:
|
|
# we try to load via the jinja loader, but that tries to load
|
|
# as (encoded) text
|
|
data = env.loader.get_source(env, name)[0].encode('utf8')
|
|
except UnicodeDecodeError:
|
|
# if that fails (for instance a binary file, png or ttf)
|
|
# we mimic jinja2
|
|
pieces = split_template_path(name)
|
|
searchpaths = self.get_template_paths()
|
|
for searchpath in searchpaths:
|
|
filename = os.path.join(searchpath, *pieces)
|
|
print(filename, os.path.exists(filename))
|
|
if os.path.exists(filename):
|
|
with open(filename, "rb") as f:
|
|
data = f.read()
|
|
break
|
|
else:
|
|
raise ValueError("No file %r found in %r" % (name, searchpaths))
|
|
data = base64.b64encode(data)
|
|
data = data.replace(b'\n', b'').decode('ascii')
|
|
src = 'data:{mime_type};base64,{data}'.format(mime_type=mime_type, data=data)
|
|
return jinja2.Markup(src)
|
|
resources = super()._init_resources(resources)
|
|
resources['theme'] = self.theme
|
|
resources['include_css'] = resources_include_css
|
|
resources['include_js'] = resources_include_js
|
|
resources['include_url'] = resources_include_url
|
|
resources['require_js_url'] = self.require_js_url
|
|
resources['jquery_url'] = self.jquery_url
|
|
return resources
|