def correct_task(version=1):
""" Correct text provided by the user, i.e. not coming from an article.
This can be either an uploaded file or a string.
This is a lower level API used by the Greynir web front-end. """
if not (1 <= version <= 1):
return better_jsonify(valid=False, reason="Unsupported version")
file = request.files.get("file")
if file is not None:
# Handle uploaded file
# file is a proxy object that emulates a Werkzeug FileStorage object
mimetype = file.mimetype
if mimetype not in SUPPORTED_DOC_MIMETYPES:
return better_jsonify(valid=False, reason="File type not supported")
# Create document object from an uploaded file and extract its text
try:
# Instantiate an appropriate class for the MIME type of the file
doc = Document.for_mimetype(mimetype)(file.read())
text = doc.extract_text()
except Exception as e:
logging.warning("Exception in correct_task(): {0}".format(e))
return better_jsonify(valid=False, reason="Error reading file")
else:
# Handle POSTed form data or plain text string
try:
text = text_from_request(request)
except Exception as e:
logging.warning("Exception in correct_task(): {0}".format(e))
return better_jsonify(valid=False, reason="Invalid request")
# assert isinstance(request, _RequestProxy)
pgs, stats = check_grammar(text, progress_func=cast(Any, request).progress_func)
# Return the annotated paragraphs/sentences and stats
# in a JSON structure to the client
return better_jsonify(valid=True, result=pgs, stats=stats, text=text)
