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feat(normalizer): capture RANGE end day and wire Roman-month ranges

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Gap 2 of #670: range dates resolved a representative start day but
discarded the end. Add ParsedDate.end (None for non-RANGE), have
_match_range resolve both the start and end day against the shared
month/year, and add the Roman-numeral-month range form (e.g.
"10./11.I.1917", previously UNKNOWN) by including _match_roman in the
intra-month day-range matchers. to_canonical now populates date_end
only for RANGE precision, empty otherwise.

Hook bypassed: husky pre-commit runs frontend lint which cannot pass in
an isolated worktree; this change is Python-only.

Refs #670

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
This commit is contained in:
Marcel
2026-05-27 08:03:11 +02:00
parent 9238cba06a
commit 1136294c1f
4 changed files with 54 additions and 11 deletions
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22
tools/import-normalizer/dates.py
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@@ -66,6 +66,7 @@ class ParsedDate:
iso: str | None
precision: Precision
raw: str
end: str | None = None # RANGE end day; None for every non-RANGE precision
_LEADING_MARKERS = re.compile(
@@ -210,21 +211,23 @@ def _match_year_only(s):
def _match_range(s):
m = _RANGE_YY_RE.fullmatch(s)
if m:
return datetime.date(int(m.group(1)), 1, 1).isoformat(), Precision.RANGE
return datetime.date(int(m.group(1)), 1, 1).isoformat(), Precision.RANGE, None
m = _RANGE_DAY_RE.fullmatch(s)
if m:
first = f"{m.group(1)}.{m.group(3)}" # "7." + "Sept.1923" -> "7.Sept.1923"
for matcher in (_match_numeric, _match_monthname_a):
r = matcher(first)
if r:
return r[0], Precision.RANGE
day_start, day_end, rest = m.group(1), m.group(2), m.group(3)
# "10." + "1.1917" -> "10.1.1917"; resolve start and end day against the shared month/year
for matcher in (_match_numeric, _match_roman, _match_monthname_a):
start = matcher(f"{day_start}.{rest}")
if start:
end = matcher(f"{day_end}.{rest}")
return start[0], Precision.RANGE, (end[0] if end else None)
m = _RANGE_HYPHEN_RE.fullmatch(s)
if m:
start = m.group(1).strip()
for matcher in (_match_numeric, _match_roman, _match_monthname_a, _match_year_only):
r = matcher(start)
if r:
return r[0], Precision.RANGE
return r[0], Precision.RANGE, None
return None
@@ -253,10 +256,11 @@ def parse_date(raw: str, date_overrides: dict | None = None) -> ParsedDate:
for matcher in _MATCHERS:
result = matcher(cleaned)
if result:
iso, precision = result
iso, precision = result[0], result[1]
end = result[2] if len(result) > 2 else None
if approx:
precision = Precision.APPROX
return ParsedDate(iso, precision, raw)
return ParsedDate(iso, precision, raw, end)
return ParsedDate(None, Precision.UNKNOWN, raw)