Mercurial > repos > guerler > springsuite

annotate planemo/lib/python3.7/site-packages/rdflib_jsonld/util.py @ 1:56ad4e20f292 draft

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"planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
author guerler
date Fri, 31 Jul 2020 00:32:28 -0400
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56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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1 try:
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2 import json
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3 assert json # workaround for pyflakes issue #13
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4 except ImportError:
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5 import simplejson as json
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6
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7 from rdflib.py3compat import PY3, format_doctest_out
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8
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9 from os import sep
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10 from os.path import normpath
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11 if PY3:
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12 from urllib.parse import urljoin, urlsplit, urlunsplit
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13 else:
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14 from urllib.parse import urljoin, urlsplit, urlunsplit
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15
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16 from rdflib.parser import create_input_source
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17 if PY3:
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18 from io import StringIO
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19
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20
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21 def source_to_json(source):
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22 # TODO: conneg for JSON (fix support in rdflib's URLInputSource!)
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23 source = create_input_source(source, format='json-ld')
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24
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25 stream = source.getByteStream()
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26 try:
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27 if PY3:
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28 return json.load(StringIO(stream.read().decode('utf-8')))
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29 else:
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30 return json.load(stream)
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31 finally:
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32 stream.close()
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33
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34
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35 VOCAB_DELIMS = ('#', '/', ':')
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36
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37 def split_iri(iri):
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38 for delim in VOCAB_DELIMS:
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39 at = iri.rfind(delim)
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40 if at > -1:
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41 return iri[:at+1], iri[at+1:]
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42 return iri, None
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43
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44 @format_doctest_out
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45 def norm_url(base, url):
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46 """
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47 >>> norm_url('http://example.org/', '/one')
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48 'http://example.org/one'
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49 >>> norm_url('http://example.org/', '/one#')
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50 'http://example.org/one#'
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51 >>> norm_url('http://example.org/one', 'two')
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52 'http://example.org/two'
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53 >>> norm_url('http://example.org/one/', 'two')
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54 'http://example.org/one/two'
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55 >>> norm_url('http://example.org/', 'http://example.net/one')
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56 'http://example.net/one'
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57 """
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58 parts = urlsplit(urljoin(base, url))
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59 path = normpath(parts[2])
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60 if sep != '/':
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61 path = '/'.join(path.split(sep))
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62 if parts[2].endswith('/') and not path.endswith('/'):
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63 path += '/'
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64 result = urlunsplit(parts[0:2] + (path,) + parts[3:])
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65 if url.endswith('#') and not result.endswith('#'):
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66 result += '#'
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67 return result
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68
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69 def context_from_urlinputsource(source):
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70 if source.content_type == 'application/json':
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71 # response_info was added to InputSource in rdflib 4.2
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72 try:
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73 links = source.response_info.getallmatchingheaders('Link')
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74 except AttributeError:
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75 return
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76 for link in links:
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77 if ' rel="http://www.w3.org/ns/json-ld#context"' in link:
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78 i, j = link.index('<'), link.index('>')
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79 if i > -1 and j > -1:
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80 return urljoin(source.url, link[i+1:j])