基于当前的修改（staged/unstaged）生成 patch 文件

git-patch.sh

#!/usr/bin/env bash

set -Eeuo pipefail

# 获取当前分支和时间
BRANCH_NAME=$(git rev-parse --abbrev-ref HEAD)
TIMESTAMP=$(date +"%Y%m%d_%H%M%S")
INCLUDE_UNSTAGED=false

# 处理输入参数
while [[ "$#" -gt 0 ]]; do
    case $1 in
        -a|--all) INCLUDE_UNSTAGED=true ;;
        *) echo "未知参数: $1"; exit 1 ;;
    esac
    shift
done

# 根据逻辑确定 diff 命令和文件名后缀
if [ "$INCLUDE_UNSTAGED" = true ]; then
    # 包含所有改动 (Staged + Unstaged)
    CMD="git diff HEAD"
    TYPE="full"
else
    # 仅包含已暂存的改动
    CMD="git diff --cached"
    TYPE="staged"
fi

FILENAME="/tmp/patch_${BRANCH_NAME}_${TYPE}_${TIMESTAMP}.patch"

# 检查是否有内容可以生成
if [ "$INCLUDE_UNSTAGED" = true ]; then
    if git diff --quiet && git diff --cached --quiet; then
        echo "❌ 错误: 没有任何改动（已暂存或未暂存）。"
        exit 1
    fi
else
    if git diff --cached --quiet; then
        echo "❌ 错误: 没有已暂存 (Staged) 的改动。"
        echo "提示: 使用 -a 参数可以包含未暂存的改动。"
        exit 1
    fi
fi

# 执行生成
$CMD > "$FILENAME"

echo "✅ 补丁已生成 ($TYPE)，使用方法: "
echo "git apply $FILENAME"