Module churn 

Git churn analysis for hotspot detection.

Shells out to git log to collect per-file change history, then computes recency-weighted churn scores and trend indicators.

Structs

AuthorContribution

Per-author commit aggregation for a single file.

ChurnResult

Result of churn analysis.

FileChurn

Per-file churn data collected from git history.

SinceDuration

Parsed --since window plus the label reports print for it.

Enums

ChurnTrend

Churn trend indicator based on comparing recent vs older halves of the analysis period.

ChurnWindow

The span of history churn analysis covers.

ChurnWindowUnit

Unit of a relative churn window.

Functions

analyze_churn

Analyze git churn for files in the given root directory.

analyze_churn_cached

Analyze churn with disk caching. Uses cached result when HEAD SHA and since duration match. If HEAD advanced from the cached SHA, runs an incremental git log <cached>..HEAD --numstat scan and merges it.

is_git_repo

Check if the directory is inside a git repository.

parse_since

Parse a --since value into a git-compatible duration.

set_spawn_hook

Install a spawn-hook that wraps the git log subprocess. Idempotent; subsequent calls are no-ops. Called once from the CLI’s main() to route through the signal registry; defaults to Command::output when not set so the function-pointer indirection stays free for tests and embedders that don’t care.

Type Aliases

ChurnSpawnHook

Function pointer signature used by set_spawn_hook to intercept the git log --numstat subprocess. Lets the CLI route long-running git log calls through its ScopedChild registry so SIGINT / SIGTERM reap the subprocess instead of leaving it running after the parent exits. See crates/cli/src/signal/ and issue #477.