Parse csv content is not correct

[quangson91]

Hi,
Thank you for your hardword to make a great lib.

Currently, I found an issue with following csv content:

"A B", "C, D"

I think the result should be two fields: A B & C, D.
But actually, the lib parse result as three fields: A B, C and D;

---

Here is my sample code:

import 'package:csv/csv.dart';

void main() {
  final rows = const CsvToListConverter().convert('"A B", "C, D"\r\n');
  for (final row in rows) {
    print(row.join('_ '));
  }
}

Output

A B_  C_  D

[close2]

Because of the space after the first , the library does not recognize " as a quote character.

This however also raises the question if we really want to simply ignore quote characters, if they appear inside unquoted strings.

We definitely shouldn't ignore whitespace. (and papa parse doesn't either: https://www.papaparse.com/demo )
I do intend to add the possibility to pre- and post-process data, which would take care of this.

Ignoring the quote characters is IMO a bug. Papa parse also doesn't ignore the quote character.

[quangson91]

@close2
Thank for your fast reponse.

I also think it should consider a bug.
After read the whole code,
I think we can simply fix by change:
https://github.com/close2/csv/blob/master/lib/src/csv_parser.dart#L391

From

    // If we are not yet inside a string, we are now
    if (!_insideString) {
      _insideString = true;
      _insideQuotedString = true;
    }

To

    // We are now inside quote string.
    _insideString = true;
    _insideQuotedString = true;

How do you think?