js使用oclif开发命令行工具实现批量修改文件名

./cl rename ./test  -R -N test_{{index}}_{{time}}_{{st}}

./cl rename ./test  -R -N test_{{index}}_{{time}}_{{st}} 

正在执行批量重命名命令，参数：{ path: './test' }，{ deep: true, name: 'test_{{index}}_{{time}}_{{st}}' }
读取目录: ./test
读取目录: test/sub
读取目录: test/sub/commands
读取目录: test/sub/commands/hello
重命名文件: test/sub/commands/hello/test_4_2022-8-18_19-47_1661225596495.ts --> test_0_2022-8-18_19-47_1661225679878.ts
重命名文件: test/sub/commands/hello/test_5_2022-8-18_19-47_1661225596495.js --> test_1_2022-8-18_19-47_1661225679879.js
重命名文件: test/sub/commands/hello/test_6_2022-8-18_19-47_1661225596496.ts --> test_2_2022-8-18_19-47_1661225679879.ts
重命名文件: test/sub/commands/hello/test_7_2022-8-18_19-47_1661225596496.js --> test_3_2022-8-18_19-47_1661225679879.js
重命名文件: test/sub/commands/hello/test_8_2022-8-18_19-47_1661225596496.ts --> test_4_2022-8-18_19-47_1661225679879.ts
重命名文件: test/sub/commands/hello/test_9_2022-8-18_19-47_1661225596496.js --> test_5_2022-8-18_19-47_1661225679879.js
读取目录: test/sub/commands/setup
重命名文件: test/sub/commands/setup/index.d.ts --> test_6_2022-8-18_19-47_1661225679879.ts
重命名文件: test/sub/commands/setup/index.js --> test_7_2022-8-18_19-47_1661225679879.js
重命名文件: test/sub/index.d.ts --> test_8_2022-8-18_19-47_1661225679879.ts
重命名文件: test/sub/index.js --> test_9_2022-8-18_19-47_1661225679880.js
重命名文件: test/sub/test_3_2022-8-23_10-52_1661225596495 --> test_10_2022-8-23_10-52_1661225679880
重命名文件: test/test_0_2022-8-23_10-52_1661225596494 --> test_11_2022-8-23_10-52_1661225679880
重命名文件: test/test_1_2022-8-16_18-1_1661225596495.png --> test_12_2022-8-16_18-1_1661225679880.png
重命名文件: test/test_2_2022-7-18_14-32_1661225596495.json --> test_13_2022-7-18_14-32_1661225679880.json
重命名文件: test/图片2.jpg --> test_15_2022-6-24_15-12_1661225679880.jpg
重命名文件: test/矩阵点背景图 2.png --> test_17_2022-8-12_17-23_1661225679881.png
重命名文件: test/矩阵点背景图.png --> test_18_2022-8-12_17-23_1661225679881.png

import { Command, Flags, CliUx } from "@oclif/core";
import * as fs from "fs-extra";
import * as path from "path";

// 执行命令：
// ./cl rename ./test  -R -N test_{{index}}_{{time}}_{{st}}
export class Rename extends Command {
  static description = "description of this example command";

  // 注册标识参数：--name 和 --deep，并且设置简称
  static flags = {
    name: Flags.string({ char: "N" }),
    deep: Flags.boolean({ char: "R" }),
  };

  // 注册参数，即 rename 空格后的第一段文字，这里是 ./test
  static args = [{ name: "path" }];

  private index = 0;

  // 命令解析完毕后，执行此方法
  async run() {
    const { args } = await this.parse(Rename);
    const { flags } = await this.parse(Rename);

    this.log("正在执行批量重命名命令，参数：%s，%s", args, flags);

    // 遍历目录并给每一个文件执行规则程序
    this.wake(args.path, flags.deep, (path: string) => {
      this.rule(path, flags.name);
    });
  }

  // 递归遍历目录
  wake(root: string, recursive = false, callback = (path: string) => {}): void {
    console.log("读取目录:", root);
    for (const filename of fs.readdirSync(root)) {
      const absPath = path.normalize(path.join(root, filename));
      const file = fs.statSync(absPath);
      if (file.isDirectory() && recursive) {
        this.wake(absPath, recursive, callback);
        continue;
      }
      try {
        callback(absPath);
      } catch (error) {
        console.log(error);
      }
    }
  }

  // 文件名规则注册
  rule(filePath: string, nameRules?: string) {
    const fileName = path.basename(filePath);

    // 规则程序执行，替换关键字
    // 目前只做这么几个规则，以后看情况加，扩展性也不错，可以单独分到 services 层做一层分离，可读性更高
    // 这里注册了 {{index}} {{time}} 等关键字
    let newFileName = this.keyword(
      String(nameRules),
      "index",
      () => this.index++
    );
    newFileName = this.keyword(newFileName, "name", () => fileName);
    newFileName = this.keyword(newFileName, "st", () => new Date().getTime());
    newFileName = this.keyword(newFileName, "time", () => {
      const date = new Date(fs.statSync(filePath).mtime);
      return `${date.getFullYear()}-${
        date.getMonth() + 1
      }-${date.getDate()}_${date.getHours()}-${date.getMinutes()}`;
    });

    newFileName += path.extname(filePath);
    const absNewPath = path.normalize(
      path.join(path.dirname(filePath), newFileName)
    );

    this.log(`重命名文件: ${filePath} --> ${newFileName}`);
    fs.renameSync(filePath, absNewPath);
  }

  // 文件名关键字替换
  keyword(
    fileName: string,
    rule: string,
    variableFn: () => string | number
  ): string {
    const key = "{{" + rule + "}}";
    const variable = variableFn();
    while (fileName.includes(key)) {
      fileName = fileName.replace(key, String(variable));
    }
    return fileName;
  }
}