1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
|
"""
Part of the bsie module.
A copy of the license is provided with the project.
Author: Matthias Baumgartner, 2022
"""
# imports
import os
import typing
# inner-module imports
from bsie.base import extractor
from bsie.utils import node, ns
from bsie.utils.bsfs import URI
import bsie.reader.path
# exports
__all__: typing.Sequence[str] = (
'Path',
)
## code ##
class Path(extractor.Extractor):
"""Extract information from file's path."""
CONTENT_READER = bsie.reader.path.Path
def __init__(self):
self.__callmap = {
ns.bse.filename: self.__filename,
}
def schema(self) -> str:
return '''
bse:filename a bsfs:Predicate ;
rdfs:domain bsfs:Entity ;
rdfs:range xsd:string ;
rdf:label "File name"^^xsd:string ;
schema:description "Filename of entity in some filesystem."^^xsd:string ;
owl:maxCardinality "INF"^^xsd:number .
'''
def extract(
self,
subject: node.Node,
content: CONTENT_READER.CONTENT_TYPE,
predicates: typing.Iterable[URI],
) -> typing.Iterator[typing.Tuple[node.Node, URI, typing.Any]]:
for pred in predicates:
# find callback
clbk = self.__callmap.get(pred)
if clbk is None:
continue
# get value
value = clbk(content)
if value is None:
continue
# produce triple
yield subject, pred, value
def __filename(self, path: str) -> str:
try:
return os.path.basename(path)
except Exception:
# FIXME: some kind of error reporting (e.g. logging)
return None
## EOF ##
|
