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
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
|
"""GeoRSS feed dict source."""
from __future__ import annotations
from typing import Optional
from georss_client.consts import (
XML_ATTR_HREF,
XML_CDATA,
XML_TAG_CONTENT,
XML_TAG_DESCRIPTION,
XML_TAG_LINK,
XML_TAG_SUMMARY,
XML_TAG_TITLE,
)
class FeedDictSource:
"""Represents a subset of a feed based on a dict."""
def __init__(self, source: dict):
"""Initialise feed."""
self._source: dict = source
def __repr__(self):
"""Return string representation of this feed item."""
return f"<{self.__class__.__name__}({self.link})>"
def _attribute(self, names: list[str]) -> Optional:
"""Get an attribute from this feed or feed item."""
if self._source and names:
# Try each name, and return the first value that is not None.
for name in names:
value = self._source.get(name, None)
if value:
return value
return None
def _attribute_with_text(self, names: list[str]) -> Optional:
"""Get an attribute with text from this feed or feed item."""
value = self._attribute(names)
if value and isinstance(value, dict) and XML_CDATA in value:
# <tag attr="/some.uri">Value</tag>
value = value.get(XML_CDATA)
return value
@staticmethod
def _attribute_in_structure(obj, keys: list[str]) -> Optional:
"""Return the attribute found under the chain of keys."""
key = keys.pop(0)
if key in obj:
return (
FeedDictSource._attribute_in_structure(obj[key], keys)
if keys
else obj[key]
)
return None
@property
def title(self) -> str | None:
"""Return the title of this feed or feed item."""
return self._attribute_with_text([XML_TAG_TITLE])
@property
def description(self) -> str | None:
"""Return the description of this feed or feed item."""
return self._attribute_with_text(
[XML_TAG_DESCRIPTION, XML_TAG_SUMMARY, XML_TAG_CONTENT]
)
@property
def summary(self) -> str | None:
"""Return the summary of this feed or feed item."""
return self.description
@property
def content(self) -> str | None:
"""Return the content of this feed or feed item."""
return self.description
@property
def link(self) -> str | None:
"""Return the link of this feed or feed item."""
link = self._attribute([XML_TAG_LINK])
if link and XML_ATTR_HREF in link:
link = link.get(XML_ATTR_HREF)
return link
def get_additional_attribute(self, name: str) -> Optional:
"""Get an additional attribute not provided as property."""
return self._attribute([name])
|
