autojs文件分割与合并

/*
 * @version: 1.0
 * @Date: 2022-01-18 12:40:45
 * @LastEditTime: 2022-02-06 00:29:29
 * @LastEditors: 牙叔
 * @Description:
 * @FilePath: \autojs-test\main.js
 * @名人名言: 牙叔教程 简单易懂
 * @bilibili: 牙叔教程
 * @公众号: 牙叔教程
 * @QQ群: 747748653
 */
importClass(android.animation.ObjectAnimator);
importClass(android.animation.AnimatorSet);
importClass(java.io.BufferedInputStream);
importClass(java.io.BufferedOutputStream);
importClass(java.io.File);
importClass(java.io.FileInputStream);
importClass(java.io.FileNotFoundException);
importClass(java.io.FileOutputStream);
importClass(java.io.IOException);
importClass(java.io.InputStream);
importClass(java.io.OutputStream);
let filePath = "/sdcard/MT2/apks/aaa.apk";
let 分割后的文件所在文件夹 = "/sdcard/aaa分割文件";
log("删除文件夹 = " + files.removeDir(分割后的文件所在文件夹));
files.ensureDir(分割后的文件所在文件夹);
splitFile(filePath, 分割后的文件所在文件夹);
let filePathList = getFilePathList(分割后的文件所在文件夹);
log("filePathList =");
log(filePathList);
merge(分割后的文件所在文件夹, filePathList);
/* -------------------------------------------------------------------------- */
function getFilePathList(dest) {
  let filePathList = [];
  var dir = dest + "/";
  log("dir = " + dir);
  filePathList = files.listDir(dir, function (name) {
    return name.indexOf("-yashu-") && files.isFile(files.join(dir, name));
  });
  if (filePathList.length === 0) {
    toastLog("分割的文件列表不存在");
    exit();
  } else {
    log("分割的文件列表存在");
  }
  filePathList = filePathList.map((filePath) => {
    return files.join(dest, filePath);
  });
  filePathList.sort(function (a, b) {
    return parseInt(a.split("-yashu-")[1]) - parseInt(b.split("-yashu-")[1]);
  });
  filePathList = filePathList.map((filePath) => {
    return new File(files.join(filePath));
  });
  return filePathList;
}
function merge(dest, files) {
  log("files[0] = " + files[0]);
  let filename = files[0].getName();
  log("filename1 = " + filename);
  filename = files[0].getName().substring(0, filename.lastIndexOf("-")).replace("-yashu", "");
  log("filename2 = " + filename);
  let filePath = dest + File.separator + filename;
  log("filePath = " + filePath);
  let bos = new BufferedOutputStream(new FileOutputStream(filePath));
  // bytes = new byte[1024 * 1024]();
  bytes = util.java.array("byte", 1024 * 1024);
  let len = -1;
  for (let i = 0; i < files.length; i++) {
    let bis = new BufferedInputStream(new FileInputStream(files[i]));
    while ((len = bis.read(bytes)) != -1) {
      bos.write(bytes, 0, len);
    }
  }
  log("合并完成");
}
function splitFile(src, dest, mb) {
  files.create(dest + "/");
  mb = mb || 1;
  let srcFile = new File(src);
  let countSize = srcFile.length();
  let fileSize = 1024 * 1024 * mb;
  let num = 0;
  if (countSize % fileSize == 0) {
    num = countSize / fileSize;
  } else {
    num = countSize / fileSize + 1;
  }
  let InputStream = new FileInputStream(srcFile);
  let bis = new BufferedInputStream(InputStream);
  let bytes = util.java.array("byte", fileSize);
  let len = -1;
  for (let i = 0; i < num; i++) {
    let newFile = dest + File.separator + srcFile.getName() + "-yashu-" + i;
    let bos = new BufferedOutputStream(new FileOutputStream(newFile));
    let count = 0;
    while ((len = bis.read(bytes)) != -1) {
      bos.write(bytes, 0, len);
      bos.flush();
      count += len;
      if (count >= fileSize) {
        break;
      }
    }
    bos.close();
  }
  bis.close();
  InputStream.close();
  log("分割完成");
}