ant-design-vue/es/vc-upload/src/traverseFileTree.js

An enterprise-class UI design language and Vue-based implementation

function _createForOfIteratorHelper(o, allowArrayLike) { var it; if (typeof Symbol === "undefined" || o[Symbol.iterator] == null) { if (Array.isArray(o) || (it = _unsupportedIterableToArray(o)) || allowArrayLike && o && typeof o.length === "number") { if (it) o = it; var i = 0; var F = function F() {}; return { s: F, n: function n() { if (i >= o.length) return { done: true }; return { done: false, value: o[i++] }; }, e: function e(_e) { throw _e; }, f: F }; } throw new TypeError("Invalid attempt to iterate non-iterable instance.\nIn order to be iterable, non-array objects must have a [Symbol.iterator]() method."); } var normalCompletion = true, didErr = false, err; return { s: function s() { it = o[Symbol.iterator](); }, n: function n() { var step = it.next(); normalCompletion = step.done; return step; }, e: function e(_e2) { didErr = true; err = _e2; }, f: function f() { try { if (!normalCompletion && it.return != null) it.return(); } finally { if (didErr) throw err; } } }; }

function _unsupportedIterableToArray(o, minLen) { if (!o) return; if (typeof o === "string") return _arrayLikeToArray(o, minLen); var n = Object.prototype.toString.call(o).slice(8, -1); if (n === "Object" && o.constructor) n = o.constructor.name; if (n === "Map" || n === "Set") return Array.from(o); if (n === "Arguments" || /^(?:Ui|I)nt(?:8|16|32)(?:Clamped)?Array$/.test(n)) return _arrayLikeToArray(o, minLen); }

function _arrayLikeToArray(arr, len) { if (len == null || len > arr.length) len = arr.length; for (var i = 0, arr2 = new Array(len); i < len; i++) { arr2[i] = arr[i]; } return arr2; }

function loopFiles(item, callback) {
  var dirReader = item.createReader();
  var fileList = [];

  function sequence() {
    dirReader.readEntries(function (entries) {
      var entryList = Array.prototype.slice.apply(entries);
      fileList = fileList.concat(entryList); // Check if all the file has been viewed

      var isFinished = !entryList.length;

      if (isFinished) {
        callback(fileList);
      } else {
        sequence();
      }
    });
  }

  sequence();
}

var traverseFileTree = function traverseFileTree(files, callback, isAccepted) {
  var _traverseFileTree = function _traverseFileTree(item, path) {
    path = path || '';

    if (item.isFile) {
      item.file(function (file) {
        if (isAccepted(file)) {
          // https://github.com/ant-design/ant-design/issues/16426
          if (item.fullPath && !file.webkitRelativePath) {
            Object.defineProperties(file, {
              webkitRelativePath: {
                writable: true
              }
            });
            file.webkitRelativePath = item.fullPath.replace(/^\//, '');
            Object.defineProperties(file, {
              webkitRelativePath: {
                writable: false
              }
            });
          }

          callback([file]);
        }
      });
    } else if (item.isDirectory) {
      loopFiles(item, function (entries) {
        entries.forEach(function (entryItem) {
          _traverseFileTree(entryItem, "".concat(path).concat(item.name, "/"));
        });
      });
    }
  };

  var _iterator = _createForOfIteratorHelper(files),
      _step;

  try {
    for (_iterator.s(); !(_step = _iterator.n()).done;) {
      var file = _step.value;

      _traverseFileTree(file.webkitGetAsEntry());
    }
  } catch (err) {
    _iterator.e(err);
  } finally {
    _iterator.f();
  }
};

export default traverseFileTree;