|
|
# -*- coding: utf-8 -*-
|
|
|
|
|
|
# Copyright (C) 2011-2017 RhodeCode GmbH
|
|
|
#
|
|
|
# This program is free software: you can redistribute it and/or modify
|
|
|
# it under the terms of the GNU Affero General Public License, version 3
|
|
|
# (only), as published by the Free Software Foundation.
|
|
|
#
|
|
|
# This program is distributed in the hope that it will be useful,
|
|
|
# but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
|
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
|
# GNU General Public License for more details.
|
|
|
#
|
|
|
# You should have received a copy of the GNU Affero General Public License
|
|
|
# along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
|
#
|
|
|
# This program is dual-licensed. If you wish to learn more about the
|
|
|
# RhodeCode Enterprise Edition, including its added features, Support services,
|
|
|
# and proprietary license terms, please see https://rhodecode.com/licenses/
|
|
|
|
|
|
|
|
|
"""
|
|
|
Renderer for markup languages with ability to parse using rst or markdown
|
|
|
"""
|
|
|
|
|
|
import re
|
|
|
import os
|
|
|
import lxml
|
|
|
import logging
|
|
|
import urlparse
|
|
|
|
|
|
from mako.lookup import TemplateLookup
|
|
|
from mako.template import Template as MakoTemplate
|
|
|
|
|
|
from docutils.core import publish_parts
|
|
|
from docutils.parsers.rst import directives
|
|
|
from docutils import writers
|
|
|
from docutils.writers import html4css1
|
|
|
import markdown
|
|
|
|
|
|
from rhodecode.lib.markdown_ext import GithubFlavoredMarkdownExtension
|
|
|
from rhodecode.lib.utils2 import (
|
|
|
safe_str, safe_unicode, md5_safe, MENTIONS_REGEX)
|
|
|
|
|
|
log = logging.getLogger(__name__)
|
|
|
|
|
|
# default renderer used to generate automated comments
|
|
|
DEFAULT_COMMENTS_RENDERER = 'rst'
|
|
|
|
|
|
|
|
|
class CustomHTMLTranslator(writers.html4css1.HTMLTranslator):
|
|
|
"""
|
|
|
Custom HTML Translator used for sandboxing potential
|
|
|
JS injections in ref links
|
|
|
"""
|
|
|
|
|
|
def visit_reference(self, node):
|
|
|
if 'refuri' in node.attributes:
|
|
|
refuri = node['refuri']
|
|
|
if ':' in refuri:
|
|
|
prefix, link = refuri.lstrip().split(':', 1)
|
|
|
if prefix == 'javascript':
|
|
|
# we don't allow javascript type of refs...
|
|
|
node['refuri'] = 'javascript:alert("SandBoxedJavascript")'
|
|
|
|
|
|
# old style class requires this...
|
|
|
return html4css1.HTMLTranslator.visit_reference(self, node)
|
|
|
|
|
|
|
|
|
class RhodeCodeWriter(writers.html4css1.Writer):
|
|
|
def __init__(self):
|
|
|
writers.Writer.__init__(self)
|
|
|
self.translator_class = CustomHTMLTranslator
|
|
|
|
|
|
|
|
|
def relative_links(html_source, server_paths):
|
|
|
if not html_source:
|
|
|
return html_source
|
|
|
|
|
|
try:
|
|
|
from lxml.html import fromstring
|
|
|
from lxml.html import tostring
|
|
|
except ImportError:
|
|
|
log.exception('Failed to import lxml')
|
|
|
return html_source
|
|
|
|
|
|
try:
|
|
|
doc = lxml.html.fromstring(html_source)
|
|
|
except Exception:
|
|
|
return html_source
|
|
|
|
|
|
for el in doc.cssselect('img, video'):
|
|
|
src = el.attrib.get('src')
|
|
|
if src:
|
|
|
el.attrib['src'] = relative_path(src, server_paths['raw'])
|
|
|
|
|
|
for el in doc.cssselect('a:not(.gfm)'):
|
|
|
src = el.attrib.get('href')
|
|
|
if src:
|
|
|
raw_mode = el.attrib['href'].endswith('?raw=1')
|
|
|
if raw_mode:
|
|
|
el.attrib['href'] = relative_path(src, server_paths['raw'])
|
|
|
else:
|
|
|
el.attrib['href'] = relative_path(src, server_paths['standard'])
|
|
|
|
|
|
return lxml.html.tostring(doc)
|
|
|
|
|
|
|
|
|
def relative_path(path, request_path, is_repo_file=None):
|
|
|
"""
|
|
|
relative link support, path is a rel path, and request_path is current
|
|
|
server path (not absolute)
|
|
|
|
|
|
e.g.
|
|
|
|
|
|
path = '../logo.png'
|
|
|
request_path= '/repo/files/path/file.md'
|
|
|
produces: '/repo/files/logo.png'
|
|
|
"""
|
|
|
# TODO(marcink): unicode/str support ?
|
|
|
# maybe=> safe_unicode(urllib.quote(safe_str(final_path), '/:'))
|
|
|
|
|
|
def dummy_check(p):
|
|
|
return True # assume default is a valid file path
|
|
|
|
|
|
is_repo_file = is_repo_file or dummy_check
|
|
|
if not path:
|
|
|
return request_path
|
|
|
|
|
|
path = safe_unicode(path)
|
|
|
request_path = safe_unicode(request_path)
|
|
|
|
|
|
if path.startswith((u'data:', u'javascript:', u'#', u':')):
|
|
|
# skip data, anchor, invalid links
|
|
|
return path
|
|
|
|
|
|
is_absolute = bool(urlparse.urlparse(path).netloc)
|
|
|
if is_absolute:
|
|
|
return path
|
|
|
|
|
|
if not request_path:
|
|
|
return path
|
|
|
|
|
|
if path.startswith(u'/'):
|
|
|
path = path[1:]
|
|
|
|
|
|
if path.startswith(u'./'):
|
|
|
path = path[2:]
|
|
|
|
|
|
parts = request_path.split('/')
|
|
|
# compute how deep we need to traverse the request_path
|
|
|
depth = 0
|
|
|
|
|
|
if is_repo_file(request_path):
|
|
|
# if request path is a VALID file, we use a relative path with
|
|
|
# one level up
|
|
|
depth += 1
|
|
|
|
|
|
while path.startswith(u'../'):
|
|
|
depth += 1
|
|
|
path = path[3:]
|
|
|
|
|
|
if depth > 0:
|
|
|
parts = parts[:-depth]
|
|
|
|
|
|
parts.append(path)
|
|
|
final_path = u'/'.join(parts).lstrip(u'/')
|
|
|
|
|
|
return u'/' + final_path
|
|
|
|
|
|
|
|
|
class MarkupRenderer(object):
|
|
|
RESTRUCTUREDTEXT_DISALLOWED_DIRECTIVES = ['include', 'meta', 'raw']
|
|
|
|
|
|
MARKDOWN_PAT = re.compile(r'\.(md|mkdn?|mdown|markdown)$', re.IGNORECASE)
|
|
|
RST_PAT = re.compile(r'\.re?st$', re.IGNORECASE)
|
|
|
JUPYTER_PAT = re.compile(r'\.(ipynb)$', re.IGNORECASE)
|
|
|
PLAIN_PAT = re.compile(r'^readme$', re.IGNORECASE)
|
|
|
|
|
|
URL_PAT = re.compile(r'(http[s]?://(?:[a-zA-Z]|[0-9]|[$-_@.&+]'
|
|
|
r'|[!*\(\),]|(?:%[0-9a-fA-F][0-9a-fA-F]))+)')
|
|
|
|
|
|
extensions = ['codehilite', 'extra', 'def_list', 'sane_lists']
|
|
|
markdown_renderer = markdown.Markdown(
|
|
|
extensions, safe_mode=True, enable_attributes=False)
|
|
|
|
|
|
markdown_renderer_flavored = markdown.Markdown(
|
|
|
extensions + [GithubFlavoredMarkdownExtension()], safe_mode=True,
|
|
|
enable_attributes=False)
|
|
|
|
|
|
# extension together with weights. Lower is first means we control how
|
|
|
# extensions are attached to readme names with those.
|
|
|
PLAIN_EXTS = [
|
|
|
# prefer no extension
|
|
|
('', 0), # special case that renders READMES names without extension
|
|
|
('.text', 2), ('.TEXT', 2),
|
|
|
('.txt', 3), ('.TXT', 3)
|
|
|
]
|
|
|
|
|
|
RST_EXTS = [
|
|
|
('.rst', 1), ('.rest', 1),
|
|
|
('.RST', 2), ('.REST', 2)
|
|
|
]
|
|
|
|
|
|
MARKDOWN_EXTS = [
|
|
|
('.md', 1), ('.MD', 1),
|
|
|
('.mkdn', 2), ('.MKDN', 2),
|
|
|
('.mdown', 3), ('.MDOWN', 3),
|
|
|
('.markdown', 4), ('.MARKDOWN', 4)
|
|
|
]
|
|
|
|
|
|
def _detect_renderer(self, source, filename=None):
|
|
|
"""
|
|
|
runs detection of what renderer should be used for generating html
|
|
|
from a markup language
|
|
|
|
|
|
filename can be also explicitly a renderer name
|
|
|
|
|
|
:param source:
|
|
|
:param filename:
|
|
|
"""
|
|
|
|
|
|
if MarkupRenderer.MARKDOWN_PAT.findall(filename):
|
|
|
detected_renderer = 'markdown'
|
|
|
elif MarkupRenderer.RST_PAT.findall(filename):
|
|
|
detected_renderer = 'rst'
|
|
|
elif MarkupRenderer.JUPYTER_PAT.findall(filename):
|
|
|
detected_renderer = 'jupyter'
|
|
|
elif MarkupRenderer.PLAIN_PAT.findall(filename):
|
|
|
detected_renderer = 'plain'
|
|
|
else:
|
|
|
detected_renderer = 'plain'
|
|
|
|
|
|
return getattr(MarkupRenderer, detected_renderer)
|
|
|
|
|
|
@classmethod
|
|
|
def renderer_from_filename(cls, filename, exclude):
|
|
|
"""
|
|
|
Detect renderer markdown/rst from filename and optionally use exclude
|
|
|
list to remove some options. This is mostly used in helpers.
|
|
|
Returns None when no renderer can be detected.
|
|
|
"""
|
|
|
def _filter(elements):
|
|
|
if isinstance(exclude, (list, tuple)):
|
|
|
return [x for x in elements if x not in exclude]
|
|
|
return elements
|
|
|
|
|
|
if filename.endswith(
|
|
|
tuple(_filter([x[0] for x in cls.MARKDOWN_EXTS if x[0]]))):
|
|
|
return 'markdown'
|
|
|
if filename.endswith(tuple(_filter([x[0] for x in cls.RST_EXTS if x[0]]))):
|
|
|
return 'rst'
|
|
|
|
|
|
return None
|
|
|
|
|
|
def render(self, source, filename=None):
|
|
|
"""
|
|
|
Renders a given filename using detected renderer
|
|
|
it detects renderers based on file extension or mimetype.
|
|
|
At last it will just do a simple html replacing new lines with <br/>
|
|
|
|
|
|
:param file_name:
|
|
|
:param source:
|
|
|
"""
|
|
|
|
|
|
renderer = self._detect_renderer(source, filename)
|
|
|
readme_data = renderer(source)
|
|
|
return readme_data
|
|
|
|
|
|
@classmethod
|
|
|
def _flavored_markdown(cls, text):
|
|
|
"""
|
|
|
Github style flavored markdown
|
|
|
|
|
|
:param text:
|
|
|
"""
|
|
|
|
|
|
# Extract pre blocks.
|
|
|
extractions = {}
|
|
|
|
|
|
def pre_extraction_callback(matchobj):
|
|
|
digest = md5_safe(matchobj.group(0))
|
|
|
extractions[digest] = matchobj.group(0)
|
|
|
return "{gfm-extraction-%s}" % digest
|
|
|
pattern = re.compile(r'<pre>.*?</pre>', re.MULTILINE | re.DOTALL)
|
|
|
text = re.sub(pattern, pre_extraction_callback, text)
|
|
|
|
|
|
# Prevent foo_bar_baz from ending up with an italic word in the middle.
|
|
|
def italic_callback(matchobj):
|
|
|
s = matchobj.group(0)
|
|
|
if list(s).count('_') >= 2:
|
|
|
return s.replace('_', r'\_')
|
|
|
return s
|
|
|
text = re.sub(r'^(?! {4}|\t)\w+_\w+_\w[\w_]*', italic_callback, text)
|
|
|
|
|
|
# Insert pre block extractions.
|
|
|
def pre_insert_callback(matchobj):
|
|
|
return '\n\n' + extractions[matchobj.group(1)]
|
|
|
text = re.sub(r'\{gfm-extraction-([0-9a-f]{32})\}',
|
|
|
pre_insert_callback, text)
|
|
|
|
|
|
return text
|
|
|
|
|
|
@classmethod
|
|
|
def urlify_text(cls, text):
|
|
|
def url_func(match_obj):
|
|
|
url_full = match_obj.groups()[0]
|
|
|
return '<a href="%(url)s">%(url)s</a>' % ({'url': url_full})
|
|
|
|
|
|
return cls.URL_PAT.sub(url_func, text)
|
|
|
|
|
|
@classmethod
|
|
|
def plain(cls, source, universal_newline=True):
|
|
|
source = safe_unicode(source)
|
|
|
if universal_newline:
|
|
|
newline = '\n'
|
|
|
source = newline.join(source.splitlines())
|
|
|
|
|
|
source = cls.urlify_text(source)
|
|
|
return '<br />' + source.replace("\n", '<br />')
|
|
|
|
|
|
@classmethod
|
|
|
def markdown(cls, source, safe=True, flavored=True, mentions=False):
|
|
|
# It does not allow to insert inline HTML. In presence of HTML tags, it
|
|
|
# will replace them instead with [HTML_REMOVED]. This is controlled by
|
|
|
# the safe_mode=True parameter of the markdown method.
|
|
|
|
|
|
if flavored:
|
|
|
markdown_renderer = cls.markdown_renderer_flavored
|
|
|
else:
|
|
|
markdown_renderer = cls.markdown_renderer
|
|
|
|
|
|
if mentions:
|
|
|
mention_pat = re.compile(MENTIONS_REGEX)
|
|
|
|
|
|
def wrapp(match_obj):
|
|
|
uname = match_obj.groups()[0]
|
|
|
return ' **@%(uname)s** ' % {'uname': uname}
|
|
|
mention_hl = mention_pat.sub(wrapp, source).strip()
|
|
|
# we extracted mentions render with this using Mentions false
|
|
|
return cls.markdown(mention_hl, safe=safe, flavored=flavored,
|
|
|
mentions=False)
|
|
|
|
|
|
source = safe_unicode(source)
|
|
|
try:
|
|
|
if flavored:
|
|
|
source = cls._flavored_markdown(source)
|
|
|
return markdown_renderer.convert(source)
|
|
|
except Exception:
|
|
|
log.exception('Error when rendering Markdown')
|
|
|
if safe:
|
|
|
log.debug('Fallback to render in plain mode')
|
|
|
return cls.plain(source)
|
|
|
else:
|
|
|
raise
|
|
|
|
|
|
@classmethod
|
|
|
def rst(cls, source, safe=True, mentions=False):
|
|
|
if mentions:
|
|
|
mention_pat = re.compile(MENTIONS_REGEX)
|
|
|
|
|
|
def wrapp(match_obj):
|
|
|
uname = match_obj.groups()[0]
|
|
|
return ' **@%(uname)s** ' % {'uname': uname}
|
|
|
mention_hl = mention_pat.sub(wrapp, source).strip()
|
|
|
# we extracted mentions render with this using Mentions false
|
|
|
return cls.rst(mention_hl, safe=safe, mentions=False)
|
|
|
|
|
|
source = safe_unicode(source)
|
|
|
try:
|
|
|
docutils_settings = dict(
|
|
|
[(alias, None) for alias in
|
|
|
cls.RESTRUCTUREDTEXT_DISALLOWED_DIRECTIVES])
|
|
|
|
|
|
docutils_settings.update({'input_encoding': 'unicode',
|
|
|
'report_level': 4})
|
|
|
|
|
|
for k, v in docutils_settings.iteritems():
|
|
|
directives.register_directive(k, v)
|
|
|
|
|
|
parts = publish_parts(source=source,
|
|
|
writer=RhodeCodeWriter(),
|
|
|
settings_overrides=docutils_settings)
|
|
|
|
|
|
return parts['html_title'] + parts["fragment"]
|
|
|
except Exception:
|
|
|
log.exception('Error when rendering RST')
|
|
|
if safe:
|
|
|
log.debug('Fallbacking to render in plain mode')
|
|
|
return cls.plain(source)
|
|
|
else:
|
|
|
raise
|
|
|
|
|
|
@classmethod
|
|
|
def jupyter(cls, source, safe=True):
|
|
|
from rhodecode.lib import helpers
|
|
|
|
|
|
from traitlets.config import Config
|
|
|
import nbformat
|
|
|
from nbconvert import HTMLExporter
|
|
|
from nbconvert.preprocessors import Preprocessor
|
|
|
|
|
|
class CustomHTMLExporter(HTMLExporter):
|
|
|
def _template_file_default(self):
|
|
|
return 'basic'
|
|
|
|
|
|
class Sandbox(Preprocessor):
|
|
|
|
|
|
def preprocess(self, nb, resources):
|
|
|
sandbox_text = 'SandBoxed(IPython.core.display.Javascript object)'
|
|
|
for cell in nb['cells']:
|
|
|
if safe and 'outputs' in cell:
|
|
|
for cell_output in cell['outputs']:
|
|
|
if 'data' in cell_output:
|
|
|
if 'application/javascript' in cell_output['data']:
|
|
|
cell_output['data']['text/plain'] = sandbox_text
|
|
|
cell_output['data'].pop('application/javascript', None)
|
|
|
return nb, resources
|
|
|
|
|
|
def _sanitize_resources(resources):
|
|
|
"""
|
|
|
Skip/sanitize some of the CSS generated and included in jupyter
|
|
|
so it doesn't messes up UI so much
|
|
|
"""
|
|
|
|
|
|
# TODO(marcink): probably we should replace this with whole custom
|
|
|
# CSS set that doesn't screw up, but jupyter generated html has some
|
|
|
# special markers, so it requires Custom HTML exporter template with
|
|
|
# _default_template_path_default, to achieve that
|
|
|
|
|
|
# strip the reset CSS
|
|
|
resources[0] = resources[0][resources[0].find('/*! Source'):]
|
|
|
return resources
|
|
|
|
|
|
def as_html(notebook):
|
|
|
conf = Config()
|
|
|
conf.CustomHTMLExporter.preprocessors = [Sandbox]
|
|
|
html_exporter = CustomHTMLExporter(config=conf)
|
|
|
|
|
|
(body, resources) = html_exporter.from_notebook_node(notebook)
|
|
|
header = '<!-- ## IPYTHON NOTEBOOK RENDERING ## -->'
|
|
|
js = MakoTemplate(r'''
|
|
|
<!-- Load mathjax -->
|
|
|
<!-- MathJax configuration -->
|
|
|
<script type="text/x-mathjax-config">
|
|
|
MathJax.Hub.Config({
|
|
|
jax: ["input/TeX","output/HTML-CSS", "output/PreviewHTML"],
|
|
|
extensions: ["tex2jax.js","MathMenu.js","MathZoom.js", "fast-preview.js", "AssistiveMML.js", "[Contrib]/a11y/accessibility-menu.js"],
|
|
|
TeX: {
|
|
|
extensions: ["AMSmath.js","AMSsymbols.js","noErrors.js","noUndefined.js"]
|
|
|
},
|
|
|
tex2jax: {
|
|
|
inlineMath: [ ['$','$'], ["\\(","\\)"] ],
|
|
|
displayMath: [ ['$$','$$'], ["\\[","\\]"] ],
|
|
|
processEscapes: true,
|
|
|
processEnvironments: true
|
|
|
},
|
|
|
// Center justify equations in code and markdown cells. Elsewhere
|
|
|
// we use CSS to left justify single line equations in code cells.
|
|
|
displayAlign: 'center',
|
|
|
"HTML-CSS": {
|
|
|
styles: {'.MathJax_Display': {"margin": 0}},
|
|
|
linebreaks: { automatic: true },
|
|
|
availableFonts: ["STIX", "TeX"]
|
|
|
},
|
|
|
showMathMenu: false
|
|
|
});
|
|
|
</script>
|
|
|
<!-- End of mathjax configuration -->
|
|
|
<script src="${h.asset('js/src/math_jax/MathJax.js')}"></script>
|
|
|
''').render(h=helpers)
|
|
|
|
|
|
css = '<style>{}</style>'.format(
|
|
|
''.join(_sanitize_resources(resources['inlining']['css'])))
|
|
|
|
|
|
body = '\n'.join([header, css, js, body])
|
|
|
return body, resources
|
|
|
|
|
|
notebook = nbformat.reads(source, as_version=4)
|
|
|
(body, resources) = as_html(notebook)
|
|
|
return body
|
|
|
|
|
|
|
|
|
class RstTemplateRenderer(object):
|
|
|
|
|
|
def __init__(self):
|
|
|
base = os.path.abspath(os.path.dirname(os.path.dirname(__file__)))
|
|
|
rst_template_dirs = [os.path.join(base, 'templates', 'rst_templates')]
|
|
|
self.template_store = TemplateLookup(
|
|
|
directories=rst_template_dirs,
|
|
|
input_encoding='utf-8',
|
|
|
imports=['from rhodecode.lib import helpers as h'])
|
|
|
|
|
|
def _get_template(self, templatename):
|
|
|
return self.template_store.get_template(templatename)
|
|
|
|
|
|
def render(self, template_name, **kwargs):
|
|
|
template = self._get_template(template_name)
|
|
|
return template.render(**kwargs)
|
|
|
|
