Mercurial > repos > shellac > guppy_basecaller

comparison env/lib/python3.7/site-packages/rdflib_jsonld/util.py @ 0:26e78fe6e8c4 draft

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"planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
author shellac
date Sat, 02 May 2020 07:14:21 -0400
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-1:000000000000 0:26e78fe6e8c4
1 try:
2 import json
3 assert json # workaround for pyflakes issue #13
4 except ImportError:
5 import simplejson as json
6
7 from rdflib.py3compat import PY3, format_doctest_out
8
9 from os import sep
10 from os.path import normpath
11 if PY3:
12 from urllib.parse import urljoin, urlsplit, urlunsplit
13 else:
14 from urllib.parse import urljoin, urlsplit, urlunsplit
15
16 from rdflib.parser import create_input_source
17 if PY3:
18 from io import StringIO
19
20
21 def source_to_json(source):
22 # TODO: conneg for JSON (fix support in rdflib's URLInputSource!)
23 source = create_input_source(source, format='json-ld')
24
25 stream = source.getByteStream()
26 try:
27 if PY3:
28 return json.load(StringIO(stream.read().decode('utf-8')))
29 else:
30 return json.load(stream)
31 finally:
32 stream.close()
33
34
35 VOCAB_DELIMS = ('#', '/', ':')
36
37 def split_iri(iri):
38 for delim in VOCAB_DELIMS:
39 at = iri.rfind(delim)
40 if at > -1:
41 return iri[:at+1], iri[at+1:]
42 return iri, None
43
44 @format_doctest_out
45 def norm_url(base, url):
46 """
47 >>> norm_url('http://example.org/', '/one')
48 'http://example.org/one'
49 >>> norm_url('http://example.org/', '/one#')
50 'http://example.org/one#'
51 >>> norm_url('http://example.org/one', 'two')
52 'http://example.org/two'
53 >>> norm_url('http://example.org/one/', 'two')
54 'http://example.org/one/two'
55 >>> norm_url('http://example.org/', 'http://example.net/one')
56 'http://example.net/one'
57 """
58 parts = urlsplit(urljoin(base, url))
59 path = normpath(parts[2])
60 if sep != '/':
61 path = '/'.join(path.split(sep))
62 if parts[2].endswith('/') and not path.endswith('/'):
63 path += '/'
64 result = urlunsplit(parts[0:2] + (path,) + parts[3:])
65 if url.endswith('#') and not result.endswith('#'):
66 result += '#'
67 return result
68
69 def context_from_urlinputsource(source):
70 if source.content_type == 'application/json':
71 # response_info was added to InputSource in rdflib 4.2
72 try:
73 links = source.response_info.getallmatchingheaders('Link')
74 except AttributeError:
75 return
76 for link in links:
77 if ' rel="http://www.w3.org/ns/json-ld#context"' in link:
78 i, j = link.index('<'), link.index('>')
79 if i > -1 and j > -1:
80 return urljoin(source.url, link[i+1:j])