def get_tokens_unprocessed(self, text):
style = self.options.get('litstyle')
if style is None:
style = (text.lstrip()[0:1] in '%\\') and 'latex' or 'bird'
code = ''
insertions = []
if style == 'bird':
# bird-style
for match in line_re.finditer(text):
line = match.group()
m = self.bird_re.match(line)
if m:
insertions.append(
(len(code), [(0, Comment.Special, m.group(1))]))
code += m.group(2)
else:
insertions.append((len(code), [(0, Text, line)]))
else:
# latex-style
from pygments.lexers.markup import TexLexer
lxlexer = TexLexer(**self.options)
codelines = 0
latex = ''
for match in line_re.finditer(text):
line = match.group()
if codelines:
if line.lstrip().startswith('\\end{code}'):
codelines = 0
latex += line
else:
code += line
elif line.lstrip().startswith('\\begin{code}'):
codelines = 1
latex += line
insertions.append(
(len(code),
list(lxlexer.get_tokens_unprocessed(latex))))
latex = ''
else:
latex += line
insertions.append(
(len(code), list(lxlexer.get_tokens_unprocessed(latex))))
for item in do_insertions(insertions,
self.baselexer.get_tokens_unprocessed(code)):
yield item
def get_tokens_unprocessed(self, text):
style = self.options.get('litstyle')
if style is None:
style = (text.lstrip()[0:1] in '%\\') and 'latex' or 'bird'
code = ''
insertions = []
if style == 'bird':
# bird-style
for match in line_re.finditer(text):
line = match.group()
m = self.bird_re.match(line)
if m:
insertions.append((len(code),
[(0, Comment.Special, m.group(1))]))
code += m.group(2)
else:
insertions.append((len(code), [(0, Text, line)]))
else:
# latex-style
from pygments.lexers.markup import TexLexer
lxlexer = TexLexer(**self.options)
codelines = 0
latex = ''
for match in line_re.finditer(text):
line = match.group()
if codelines:
if line.lstrip().startswith('\\end{code}'):
codelines = 0
latex += line
else:
code += line
elif line.lstrip().startswith('\\begin{code}'):
codelines = 1
latex += line
insertions.append((len(code),
list(lxlexer.get_tokens_unprocessed(latex))))
latex = ''
else:
latex += line
insertions.append((len(code),
list(lxlexer.get_tokens_unprocessed(latex))))
for item in do_insertions(insertions, self.baselexer.get_tokens_unprocessed(code)):
yield item
def retrieve(self,
request: Request,
key: str,
format: Optional[str] = None) -> Response:
"""
Retrieve a node.
Performs content negotiation and authorization based on the `Accept` header.
- For `application/json` returns 403 if the request user is not authorized
to read the project.
- For `text/html` (and others) returns a HTML rendering of the
of the node without authorization checking; this is to allow scrapers such
as Google Docs link preview generator to be able to fetch basic information
on the node. For private projects node URLs should be kept private to avoid
unauthorized access.
"""
node = get_object_or_404(Node, key=key)
if format == "json" or request.accepted_renderer.format == "json":
# Require the user is authenticated and has VIEW permissions for the project
if not request.user.is_authenticated:
raise NotAuthenticated
if node.project:
try:
get_projects(request.user).get(id=node.project.id)
except Project.DoesNotExist:
raise PermissionDenied
serializer = NodeSerializer(node, context={"request": request})
return Response(serializer.data)
else:
# Return a HTML representation of the node
node_type = schema_node_type(node.json)
if node_type in ("CodeChunk", "CodeExpression"):
lang = node.json.get("programmingLanguage", "")
try:
lexer = pygments.lexers.get_lexer_by_name(lang)
except pygments.util.ClassNotFound:
lexer = TextLexer()
code = node.json.get("text", "")
elif node_type in ("MathBlock", "MathFragment"):
lexer = TexLexer()
code = node.json.get("text")
else:
lexer = JsonLexer()
code = json.dumps(node.json, indent=2)
formatter = HtmlFormatter(cssclass="source", style="colorful")
css = formatter.get_style_defs(".source")
html = pygments.highlight(code, lexer, formatter)
app_name, app_url = node.get_app()
return Response(
dict(
meta=node.get_meta(),
node=node,
css=css,
html=html,
app_name=app_name,
app_url=app_url,
),
template_name="projects/nodes/retrieve.html",
)