Allow non strict parsing

[fvasco]

Please implement a non strict Yaml parser, similar to Json.strictMode, to ignore unmapped keys.

Error on version 0.11.0:

com.charleskorn.kaml.UnknownPropertyException: Unknown property 'z'. Known properties are: a, b, c
        at com.charleskorn.kaml.YamlMapInput.throwUnknownProperty(YamlInput.kt:211)
        at com.charleskorn.kaml.YamlMapInput.decodeElementIndexForObject(YamlInput.kt:174)
        at com.charleskorn.kaml.YamlMapInput.decodeElementIndex(YamlInput.kt:159)
...
        at kotlinx.serialization.Decoder$DefaultImpls.decodeSerializableValue(Coders.kt:113)
        at kotlinx.serialization.ElementValueDecoder.decodeSerializableValue(ElementWise.kt:91)
        at kotlinx.serialization.CoreKt.decode(Core.kt:79)
        at com.charleskorn.kaml.Yaml.parse(Yaml.kt:40)

[charleskorn]

Hi @fvasco, thanks for the suggestion! I don't have a lot of capacity for this at the moment, but I will take a look when I get a chance.

If you'd be interested in submitting a PR to add this, I don't think it would be a big change and I'd be happy to provide feedback and suggestions as you go.

[charleskorn]

I found myself with some spare time so I've added this in and it'll be part of the next release - let me know if you have any feedback on the implementation!

[fvasco]

Sure,
thank you!

[DanySK]

Is this implemented? How to use it?

[charleskorn]

Hi @DanySK, yes, this is implemented.

To enable strict mode, use the default settings (or set YamlConfiguration.strictMode to true).

To disable strict mode, set YamlConfiguration.strictMode to false.