mirror of
https://github.com/DragoonAethis/itch-dl.git
synced 2025-02-28 18:43:38 +01:00
34 lines
993 B
Python
34 lines
993 B
Python
import re
|
|
|
|
|
|
class ItchDownloadError(Exception):
|
|
pass
|
|
|
|
|
|
def get_int_after_marker_in_json(text: str, marker: str, key: str) -> int | None:
|
|
"""
|
|
Many itch.io sites use a pattern like this: Most of the HTML page
|
|
is prerendered, but certain interactive objects are handled with
|
|
JavaScript initialized with `I.WidgetHandler({"id": 123, ...})`
|
|
somewhere near the end of each page. Those config blocks often
|
|
contain metadata like game/page IDs that we want to extract.
|
|
"""
|
|
marker_line: str | None = None
|
|
for line in reversed(text.splitlines()):
|
|
marker_index = line.find(marker)
|
|
if marker_index != -1:
|
|
marker_line = line[marker_index:]
|
|
break
|
|
|
|
if marker_line is None:
|
|
return None
|
|
|
|
# Notice double-slashes in the f-string (not r-string)!
|
|
pattern = f'\\"{key}\\":\\s?(\\d+)'
|
|
|
|
found_ints = re.findall(pattern, marker_line)
|
|
if len(found_ints) != 1:
|
|
return None
|
|
|
|
return int(found_ints[0])
|