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526950e | 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 | """Apply config/course.yaml classification rules to file paths."""
from __future__ import annotations
import fnmatch
import re
from dataclasses import dataclass
from typing import Optional
@dataclass(frozen=True)
class Classification:
kind: str
topic: str
visibility: str
student_access: bool
release_status: str
order: Optional[int] = None
lecture_date: Optional[str] = None
def classify_path(path: str, rules: dict) -> Optional[Classification]:
"""Classify a repo-relative POSIX path against the loaded course.yaml rules.
Returns None if no rule matches (caller should record as unmatched diagnostic).
"""
for rule in rules["classification_rules"]:
if not fnmatch.fnmatchcase(path, rule["match"]):
continue
topic_raw = _extract(rule.get("topic_extract"), path)
if topic_raw is None:
topic = "_unknown"
else:
topic = rules.get("topic_name_overrides", {}).get(
topic_raw, _normalize_topic(topic_raw)
)
order = _extract_int(rule.get("order_extract"), path)
lecture_date = _extract(rule.get("lecture_date_extract"), path)
return Classification(
kind=rule["kind"],
topic=topic,
visibility=rule["visibility"],
student_access=rule["student_access"],
release_status=rule["release_status"],
order=order,
lecture_date=lecture_date,
)
return None
def _extract(pattern: Optional[str], path: str) -> Optional[str]:
if not pattern:
return None
m = re.search(pattern, path)
return m.group(1) if m else None
def _extract_int(pattern: Optional[str], path: str) -> Optional[int]:
raw = _extract(pattern, path)
return int(raw) if raw is not None else None
def _normalize_topic(raw: str) -> str:
"""Single-cap-boundary Camel/Pascal → snake_case lowercase.
Consecutive capitals (e.g., 'URL', 'XMLParser') are NOT handled —
use ``topic_name_overrides`` in course.yaml to map such inputs.
"""
s = re.sub(r"(?<!^)(?=[A-Z])", "_", raw).lower()
return s
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