Parse only specific style rules from SLD schema

[ktsangop]

Is there a way to request for a specific styles from multiple available for a Layer during parsing?

We have multiple "Selected Styles" exported from GeoServer for a specific Layer.
The SldStyleParser.readStyle() method correctly parses the XML document, and builds its own style object, but it merges all downloaded styles to a single one, including the rules of all the styles.

For example our SLD structure is :

<?xml version="1.0" encoding="UTF-8"?><sld:StyledLayerDescriptor xmlns="http://www.opengis.net/sld" xmlns:sld="http://www.opengis.net/sld" xmlns:gml="http://www.opengis.net/gml" xmlns:ogc="http://www.opengis.net/ogc" version="1.0.0">
    <sld:NamedLayer>
        <sld:Name>my_layer_name</sld:Name>
        <sld:UserStyle>
            <sld:Name>my_style_1</sld:Name>
            <sld:Rule>...</sld:Rule>
            <sld:Rule>...</sld:Rule>
        </sld:UserStyle>
        <sld:UserStyle>
            <sld:Name>my_style_2</sld:Name>
            <sld:Rule>...</sld:Rule>
            <sld:Rule>...</sld:Rule>
        </sld:UserStyle>
        .... more styles here...
    </sld:NamedLayer>
</sld:StyledLayerDescriptor>

And the GeoStyler Style object we get when we parse this has the name of the 1st style e.g. my_style_1 and all the rules of the rest of the styles.

I am trying to find a way to parse only a specific style with its own rules from the XML by Name possibly e.g.
SldStyleParser.readStyle('my_style_2')
Is this possible?

I have also tried to find a way to do this using the WMS GetStyle API requst, but I always get the full list of styles in the response.

Thanks in advance.

[KaiVolland]

Hey @ktsangop, currently the result of the parsers are always single styles: https://github.com/geostyler/geostyler-style/blob/main/style.ts#L858. So to parse a specific style we could introduce a new constructor argument. But you would have to create a new parser every time. This is not perfet, but currently their is no way to pass options to the readStyle and writeStyle functions. This might be a better way, but we would have to extend the interfaces on the geostyler-style. @geostyler/core any opinions on this?

[jansule]

currently their is no way to pass options to the readStyle and writeStyle functions. This might be a better way, but we would have to extend the interfaces on the geostyler-style. @geostyler/core any opinions on this?

Passing an optional config object to readStyle and writeStyle would be ok for me, since this would not introduce a breaking change.