socktop/.githooks/pre-commit

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#!/usr/bin/env bash
# This repository uses a custom hooks directory (.githooks). To enable this pre-commit hook run:
# git config core.hooksPath .githooks
# Ensure this file is executable: chmod +x .githooks/pre-commit
set -euo pipefail
echo "[pre-commit] Running cargo fmt --all" >&2
if ! command -v cargo >/dev/null 2>&1; then
# Try loading rustup environment (common install path)
if [ -f "$HOME/.cargo/env" ]; then
# shellcheck source=/dev/null
. "$HOME/.cargo/env"
fi
fi
if ! command -v cargo >/dev/null 2>&1; then
echo "[pre-commit] cargo not found in PATH; skipping fmt (install Rust or adjust PATH)." >&2
exit 0
fi
cargo fmt --all
# Stage any Rust files that were reformatted
changed=$(git diff --name-only --diff-filter=M | grep -E '\\.rs$' || true)
if [ -n "$changed" ]; then
echo "$changed" | xargs git add
echo "[pre-commit] Added formatted files" >&2
fi
# Fail if further diffs remain (shouldn't happen normally)
unfmt=$(git diff --name-only --diff-filter=M | grep -E '\\.rs$' || true)
if [ -n "$unfmt" ]; then
echo "[pre-commit] Some Rust files still differ after formatting:" >&2
echo "$unfmt" >&2
exit 1
fi
exit 0