Error: Invalid character entity when use !ENTITY

[japroc]

Is it possible to parse the following code, or any which uses External Entities using parseString function?

It always output errors like this

Error: Invalid character entity
Line: ...
Column: 57
Char: ;

[julimen5ml]

Hi @Yookkee, did you find a way to escape that error?

[jcsahnwaldt]

sax-js ignores custom DTD <!ENTITY ...> definitions: "It's possible to define additional entities in XML by putting them in the DTD. This parser doesn't do anything with that." https://github.com/isaacs/sax-js#regarding-doctypes-and-entitys Thus when a custom entity like &xxe; occurs in the XML, the parser throws an error.

[jcsahnwaldt]

Here's an ugly workaround:

let parser = new xml2js.Parser();
parser.saxParser.ENTITIES.xxe = 'whatever';
parser.parseString('<foo>&xx;</foo>', (err, res) => {
  if (err) console.log(err);
  else console.log(res);
});

Result:

{ foo: 'whatever' }

You shouldn't use this in production code though. parser.saxParser and saxParser.ENTITIES are undocumented properties that may go away any moment. (Well, in any minor version upgrade.)