mirror of
https://github.com/gsi-upm/sitc
synced 2024-11-17 20:12:28 +00:00
127 lines
3.6 KiB
Python
127 lines
3.6 KiB
Python
import sys
|
|
from future.standard_library import install_aliases
|
|
install_aliases()
|
|
|
|
from urllib import request, parse
|
|
from rdflib import Graph, term, Namespace, BNode
|
|
from lxml import etree
|
|
|
|
import IPython
|
|
js = "IPython.CodeCell.options_default.highlight_modes['magic_turtle'] = {'reg':[/^%%ttl/]};"
|
|
IPython.core.display.display_javascript(js, raw=True)
|
|
|
|
|
|
from IPython.core.magic import (register_line_magic, register_cell_magic,
|
|
register_line_cell_magic)
|
|
from IPython.display import HTML, display, Image, Markdown
|
|
|
|
|
|
DEFINITIONS = {}
|
|
|
|
def solution(exercise='default'):
|
|
if exercise not in DEFINITIONS:
|
|
raise Exception('Solution for {} not found. Have you defined it?'.format(exercise))
|
|
return DEFINITIONS[exercise]
|
|
|
|
|
|
@register_cell_magic
|
|
def ttl(line, cell):
|
|
'''
|
|
TTL magic command for ipython. It can be used in a cell like this:
|
|
|
|
```
|
|
%%ttl
|
|
|
|
... Your TTL definition ...
|
|
|
|
```
|
|
The definition will be loaded into a DEFINITION variable, using RDFlib.
|
|
This definition can then be used for evaluation.
|
|
'''
|
|
g = Graph()
|
|
msg = '''Error on line {line}
|
|
|
|
Reason: {reason}
|
|
|
|
If you don\'t know what this error means, try an online validator: http://ttl.summerofcode.be/
|
|
'''
|
|
global DEFINITIONS
|
|
key = line or 'default'
|
|
DEFINITIONS[key] = None
|
|
try:
|
|
DEFINITIONS[key] = g.parse(data=cell,
|
|
format="n3")
|
|
except SyntaxError as ex:
|
|
print(msg.format(line=ex.lines, reason=ex._why), file=sys.stderr)
|
|
raise Exception('Bad Turtle syntax') from None
|
|
except Exception as ex:
|
|
print(msg.format(line='?', reason=ex), file=sys.stderr)
|
|
raise Exception('Bad Turtle syntax') from None
|
|
return Markdown('The Turtle syntax is correct.')
|
|
|
|
|
|
def extract_data(url):
|
|
g = Graph()
|
|
try:
|
|
g.parse(url, format='rdfa')
|
|
except Exception:
|
|
print('Could not get rdfa data', file=sys.stderr)
|
|
try:
|
|
g.parse(url, format='microdata')
|
|
except Exception:
|
|
print('Could not get microdata', file=sys.stderr)
|
|
|
|
|
|
def sanitize_triple(t):
|
|
"""Function to remove bad URIs from the graph that would otherwise
|
|
make the serialization fail."""
|
|
def sanitize_triple_item(item):
|
|
if isinstance(item, term.URIRef) and ' ' in item:
|
|
return term.URIRef(parse.quote(str(item)))
|
|
return item
|
|
|
|
return (sanitize_triple_item(t[0]),
|
|
sanitize_triple_item(t[1]),
|
|
sanitize_triple_item(t[2]))
|
|
|
|
|
|
with request.urlopen(url) as response:
|
|
# Get all json-ld objects embedded in the html file
|
|
html = response.read().decode('utf-8', errors='ignore')
|
|
parser = etree.XMLParser(recover=True)
|
|
root = etree.fromstring(html.encode(), parser=parser)
|
|
if root is not None and len(root):
|
|
for jsonld in root.findall(".//script[@type='application/ld+json']"):
|
|
g.parse(data=jsonld.text, publicID=BNode(), format='json-ld')
|
|
|
|
|
|
fixedgraph = Graph()
|
|
fixedgraph += [sanitize_triple(s) for s in g]
|
|
|
|
return fixedgraph
|
|
|
|
def turtle(g):
|
|
return Markdown('''
|
|
Results:
|
|
|
|
```turtle
|
|
{}
|
|
```
|
|
'''.format(g.serialize(format='turtle').decode('utf-8', errors='ignore')))
|
|
|
|
def print_data(url):
|
|
g = extract_data(url)
|
|
return turtle(g)
|
|
|
|
|
|
|
|
def check(testname):
|
|
import tests
|
|
|
|
test = getattr(tests, 'test_{}'.format(testname), None)
|
|
if test is None:
|
|
raise Exception('There are no tests for {}'.format(testname))
|
|
definition = solution(testname)
|
|
if definition is None:
|
|
raise Exception('The definition for {} is empty or invalid.'.format(testname))
|
|
return test(definition) |