Spreadsheet Decoder

Spreadsheet Decoder is a library for decoding and updating spreadsheets for ODS and XLSX files.

Usage

On server-side

import 'dart:io';
import 'package:spreadsheet_decoder/spreadsheet_decoder.dart';

main() {
  var bytes = File.fromUri(fullUri).readAsBytesSync();
  var decoder = SpreadsheetDecoder.decodeBytes(bytes);
  var table = decoder.tables['Sheet1'];
  var values = table.rows[0];
  ...
  decoder.updateCell('Sheet1', 0, 0, 1337);
  File(join(fullUri).writeAsBytesSync(decoder.encode());
  ...
}

On client-side

import 'dart:html';
import 'package:spreadsheet_decoder/spreadsheet_decoder.dart';

main() {
  var reader = FileReader();
  reader.onLoadEnd.listen((event) {
    var decoder = SpreadsheetDecoder.decodeBytes(reader.result);
    var table = decoder.tables['Sheet1'];
    var values = table.rows[0];
    ...
    decoder.updateCell('Sheet1', 0, 0, 1337);
    var bytes = decoder.encode();
    ...
  });
}

Features not yet supported

This implementation doesn't support following features:

annotations
spanned rows
spanned columns
hidden rows (visible in resulting tables)
hidden columns (visible in resulting tables)

For XLSX format, this implementation only supports native Excel format for date, time and boolean type conversion. In other words, custom format for date, time, boolean aren't supported and then file exported from LibreOffice as well.

License