#!/usr/bin/env bash
# 本地硬闸（commit-msg）：主题行宽度/句点。git 将消息文件作为 $1 传入——
# 注意不能用 pre-commit 做此事：-m 消息在 prepare-commit-msg 才写入，pre-commit 阶段尚不存在。
msgfile="$1"
[ -n "$msgfile" ] && [ -f "$msgfile" ] || exit 0
subject=$(head -1 "$msgfile")
[ -n "$subject" ] || exit 0
w=$(python3 -c 'import sys,unicodedata;print(sum(2 if unicodedata.east_asian_width(c) in "WF" else 1 for c in sys.argv[1]))' "$subject")
[ "$w" -le 100 ] || { echo "commit-msg: 拒绝——主题行宽 ${w} > 100 列：${subject}" >&2; exit 1; }
case "$subject" in
  *.) echo "commit-msg: 拒绝——主题行不以句点结尾：${subject}" >&2; exit 1 ;;
esac
exit 0