gen_diff_msg.sh

#!/bin/bash

file=commit_HEAD~$1.txt

echo " "
echo "-------------------------------------------"
echo "开始生成差异文本，并写入 $file!"
echo "-------------------------------------------"
echo " "

# 如果文件存在则删除
if [ -f $file ]; then
  echo " "
  echo "-------------------------------------------"
  echo "检测到 $file 已存在，即将删除该文件！"
  echo "-------------------------------------------"
  echo " "
  rm -f $file
fi

VERSION=""
if [ -n "$1" ]; then
  echo " "
  echo "-------------------------------------------"
  echo "✅ 监测到传入版本参数：HEAD~$1"
  echo "-------------------------------------------"
  echo " "
  VERSION="HEAD~$1"
fi

echo "===== 文件变更统计 =====" >>$file
echo $VERSION >>$file
echo "-------------------------------------------" >>$file

echo "===== git status =====" >>$file
echo $VERSION >>$file
echo "-------------------------------------------" >>$file
git status >>$file

echo "-------------------------------------------" >>$file

git diff --stat -w $VERSION >>$file

echo -e "\n===== 完整差异内容 =====" >>$file
git diff -w $VERSION >>$file
echo "-------------------------------------------" >>$file
echo " " >>$file

echo "===== 暂存区 文件变更统计 =====" >>$file
git diff --staged --stat -w $VERSION >>$file

echo -e "\n===== 暂存区 完整差异 =====" >>$file
git diff --staged -w $VERSION >>$file

echo "✅ 差异文件已生成：$file"
echo " "