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"""Area notes (`## Areas` in the project's CLAUDE.md): code-map anchors, staleness, Checked marker."""
from __future__ import annotations
import fnmatch
import re
import subprocess
from dataclasses import dataclass, replace
from pathlib import Path
@dataclass(frozen=True)
class Area:
name: str
slug: str
anchors: list[str]
paths: list[str]
checked: str | None
line: int
def slug(name: str) -> str:
return re.sub(r"[^a-z0-9]+", "-", name.lower()).strip("-")
def parse(text: str) -> list[Area]:
out: list[Area] = []
in_areas = False
cur: dict | None = None
def flush():
if cur:
out.append(Area(cur["name"], slug(cur["name"]), cur["anchors"], cur["paths"], cur["checked"], cur["line"]))
for n, line in enumerate(text.replace("\r\n", "\n").split("\n"), 1):
if line.startswith("## "):
flush()
cur = None
in_areas = line[3:].strip().lower() == "areas"
elif in_areas and line.startswith("### "):
flush()
cur = {"name": line[4:].strip(), "anchors": [], "paths": [], "checked": None, "line": n}
elif cur is not None:
if line.startswith("- Code map:"):
cur["anchors"] = re.findall(r"`([^`]+)`", line)
elif line.startswith("- Paths:"):
cur["paths"] = line[len("- Paths:"):].split()
elif line.startswith("- Checked:"):
words = line[len("- Checked:"):].split()
cur["checked"] = words[0] if words and re.fullmatch(r"[0-9a-fA-F]{4,40}", words[0]) else None
flush()
return out
def matches(area: Area, text: str, skip: set[str] = frozenset()) -> bool:
"""text (a task) names the area, one of its anchors or Paths (whole word / path, case-insensitive name);
Paths in `skip` (shared by several areas) never match."""
def word(tok: str, flags=0) -> bool:
return re.search(r"(?<![\w.])" + re.escape(tok) + r"(?![\w])", text, flags) is not None
paths = [p.removeprefix("./").rstrip("/") for p in area.paths if not any(c in p for c in "*?[")]
paths = [p for p in paths if p not in skip]
return (word(area.name, re.I) or any(word(t) for t in area.anchors)
or any(word(p) for p in paths if p))
def shared_paths(found: list[Area]) -> set[str]:
"""Paths (normalised) listed by more than one area."""
seen: dict[str, int] = {}
for a in found:
for p in {p.removeprefix("./").rstrip("/") for p in a.paths}:
seen[p] = seen.get(p, 0) + 1
return {p for p, n in seen.items() if n > 1}
def block(text: str, name: str) -> str:
"""The area's notes: its ### heading up to the next heading, trailing blank lines dropped; unknown → ""."""
lines = text.replace("\r\n", "\n").split("\n")
in_areas, out = False, None
for line in lines:
if line.startswith("#"):
if out is not None:
break
if line.startswith("## "):
in_areas = line[3:].strip().lower() == "areas"
elif in_areas and line.startswith("### ") and line[4:].strip() == name:
out = [line]
elif out is not None:
out.append(line)
while out and not out[-1].strip():
out.pop()
return "\n".join(out or [])
def covers(paths: list[str], file: str) -> bool:
"""file (project-relative) matches one of an area's Paths: dir prefix, exact file or glob."""
for p in paths:
p = p.removeprefix("./").rstrip("/")
if file == p or file.startswith(p + "/") or fnmatch.fnmatchcase(file, p):
return True
return False
def uncovered(files: list[str], found: list[Area], ignore: list[str]) -> list[tuple[str, int]]:
"""Folders (≤ 2 levels) of files no area's Paths covers → [(folder, file count)], most files first.
Root files, dot folders and `ignore` prefixes skipped; no area with Paths → []."""
if not any(a.paths for a in found):
return []
count: dict[str, int] = {}
for f in files:
parts = f.split("/")[:-1]
if not parts or any(x.startswith(".") for x in parts) or covers(ignore, f):
continue
if any(covers(a.paths, f) for a in found):
continue
d = "/".join(parts[:2])
count[d] = count.get(d, 0) + 1
return sorted(count.items(), key=lambda kv: (-kv[1], kv[0]))
def changed_files(here: Path, base: str | None) -> list[str]:
"""Files (relative to here) changed since merge-base(HEAD, base) incl. uncommitted + untracked;
base None → HEAD (uncommitted only)."""
ref = "HEAD"
if base:
r = _git(here, "merge-base", "HEAD", base)
if r.returncode == 0 and r.stdout.strip():
ref = r.stdout.strip()
out = []
for args in (("diff", "--name-only", "--relative", ref), ("ls-files", "--others", "--exclude-standard")):
r = _git(here, *args)
if r.returncode == 0:
out += [l for l in r.stdout.splitlines() if l]
return sorted(set(out))
def with_anchor_paths(root: Path, area: Area) -> Area:
"""No Paths → the folders of the files holding its anchors (git grep) stand in for them."""
if area.paths or not area.anchors:
return area
args = [x for tok in area.anchors for x in ("-e", tok)]
r = _git(root, "grep", "-l", "-F", *args)
files = r.stdout.splitlines() if r.returncode == 0 else []
return replace(area, paths=sorted({f.rsplit("/", 1)[0] if "/" in f else f for f in files}))
def _git(root: Path, *args: str) -> subprocess.CompletedProcess:
return subprocess.run(["git", "-C", str(root), *args], capture_output=True, text=True)
def missing(root: Path, area: Area) -> list[str]:
out = []
for tok in area.anchors:
r = _git(root, "grep", "-F", "-q", "-e", tok, *(["--", *area.paths] if area.paths else []))
if r.returncode != 0:
out.append(tok)
return out
def commits_since(root: Path, area: Area) -> int | None:
if not area.checked or _git(root, "cat-file", "-e", f"{area.checked}^{{commit}}").returncode != 0:
return None
r = _git(root, "rev-list", "--count", f"{area.checked}..HEAD", *(["--", *area.paths] if area.paths else []))
return int(r.stdout.strip()) if r.returncode == 0 and r.stdout.strip().isdigit() else None
def status(root: Path, area: Area, limit: int) -> tuple[bool, list[str], int | None]:
miss = missing(root, area)
commits = commits_since(root, area)
return (bool(miss) or (commits is not None and commits >= limit)), miss, commits
def mark(text: str, name: str, sha: str) -> str:
lines = text.split("\n")
in_areas = False
start = None
for i, line in enumerate(lines):
if line.startswith("## "):
if start is not None:
break
in_areas = line[3:].strip().lower() == "areas"
elif in_areas and line.startswith("### "):
if start is not None:
break
if line[4:].strip() == name:
start = i
if start is None:
return text
end = start + 1
while end < len(lines) and not lines[end].startswith("#"):
end += 1
block_end = end
while block_end > start + 1 and not lines[block_end - 1].strip():
block_end -= 1
new = f"- Checked: {sha}"
for i in range(start + 1, block_end):
if lines[i].startswith("- Checked:"):
lines[i] = new
return "\n".join(lines)
lines.insert(block_end, new)
return "\n".join(lines)
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