read-excel-file/modules/xlsx/convertCellsToData2dArray.js

Read `.xlsx` files in a web browser or in Node.js

function _createForOfIteratorHelperLoose(o, allowArrayLike) { var it = typeof Symbol !== "undefined" && o[Symbol.iterator] || o["@@iterator"]; if (it) return (it = it.call(o)).next.bind(it); if (Array.isArray(o) || (it = _unsupportedIterableToArray(o)) || allowArrayLike && o && typeof o.length === "number") { if (it) o = it; var i = 0; return function () { if (i >= o.length) return { done: true }; return { done: false, value: o[i++] }; }; } throw new TypeError("Invalid attempt to iterate non-iterable instance.\nIn order to be iterable, non-array objects must have a [Symbol.iterator]() method."); }
function _slicedToArray(arr, i) { return _arrayWithHoles(arr) || _iterableToArrayLimit(arr, i) || _unsupportedIterableToArray(arr, i) || _nonIterableRest(); }
function _nonIterableRest() { throw new TypeError("Invalid attempt to destructure non-iterable instance.\nIn order to be iterable, non-array objects must have a [Symbol.iterator]() method."); }
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 _iterableToArrayLimit(r, l) { var t = null == r ? null : "undefined" != typeof Symbol && r[Symbol.iterator] || r["@@iterator"]; if (null != t) { var e, n, i, u, a = [], f = !0, o = !1; try { if (i = (t = t.call(r)).next, 0 === l) { if (Object(t) !== t) return; f = !1; } else for (; !(f = (e = i.call(t)).done) && (a.push(e.value), a.length !== l); f = !0); } catch (r) { o = !0, n = r; } finally { try { if (!f && null != t["return"] && (u = t["return"](), Object(u) !== u)) return; } finally { if (o) throw n; } } return a; } }
function _arrayWithHoles(arr) { if (Array.isArray(arr)) return arr; }
import dropEmptyRows from './dropEmptyRows.js';
import dropEmptyColumns from './dropEmptyColumns.js';
export default function convertCellsToData2dArray(cells, dimensions) {
  // If the sheet is empty.
  if (cells.length === 0) {
    return [];
  }
  var _dimensions = _slicedToArray(dimensions, 2),
    leftTop = _dimensions[0],
    rightBottom = _dimensions[1];

  // Don't discard empty rows or columns at the start of the spreadsheet,
  // even when the `*.xlsx` file itself tells that the content starts at an offset.
  // https://github.com/catamphetamine/read-excel-file/issues/102
  // const colsCount = (rightBottom.column - leftTop.column) + 1
  // const rowsCount = (rightBottom.row - leftTop.row) + 1

  var colsCount = rightBottom.column;
  var rowsCount = rightBottom.row;

  // Initialize spreadsheet data structure.
  var data = new Array(rowsCount);
  var i = 0;
  while (i < rowsCount) {
    data[i] = new Array(colsCount);
    var j = 0;
    while (j < colsCount) {
      data[i][j] = null;
      j++;
    }
    i++;
  }

  // Fill in spreadsheet `data`.
  // (this code implies that `cells` aren't necessarily sorted by row and column:
  //  maybe that's not correct, this piece code was initially copy-pasted
  //  from some other library that used `XPath`)
  for (var _iterator = _createForOfIteratorHelperLoose(cells), _step; !(_step = _iterator()).done;) {
    var cell = _step.value;
    // Don't discard empty rows or columns at the start of the spreadsheet,
    // even when the `*.xlsx` file itself tells that the content starts at an offset.
    // https://github.com/catamphetamine/read-excel-file/issues/102
    // const rowIndex = cell.row - leftTop.row
    // const columnIndex = cell.column - leftTop.column
    var rowIndex = cell.row - 1;
    var columnIndex = cell.column - 1;
    // Ignore the data in the cell if it's outside of the spreadsheet's "dimensions".
    if (columnIndex < colsCount && rowIndex < rowsCount) {
      data[rowIndex][columnIndex] = cell.value;
    }
  }

  // // Fill in the row map, if the row map was passed.
  // if (options.rowIndexSourceMap) {
  //   let i = 0
  //   while (i < data.length) {
  //     options.rowIndexSourceMap[i] = i
  //     i++
  //   }
  // }

  // Drop (discard) empty columns at the right side.
  // Drop (discard) empty rows at the bottom.
  data = dropEmptyRows(dropEmptyColumns(data, {
    onlyTrimAtTheEnd: true
  }), {
    onlyTrimAtTheEnd: true
  } // { onlyTrimAtTheEnd: true, rowIndexSourceMap: options.rowIndexSourceMap }
  );

  return data;
}
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