BadImportFileNodeTransformer.cs

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using BadScript2.IO;
using BadScript2.Runtime.Error;
 
using HtmlAgilityPack;
 
namespace BadHtml.Transformer;
 
public class BadImportFileNodeTransformer : BadHtmlNodeTransformer
{
    protected override bool CanTransform(BadHtmlContext context)
    {
        return context.InputNode.Name == "bs:import";
    }
 
    protected override void TransformNode(BadHtmlContext context)
    {
        HtmlAttribute? pathAttribute = context.InputNode.Attributes["path"];
 
        if (pathAttribute == null)
        {
            throw BadRuntimeException.Create(
                context.ExecutionContext.Scope,
                "Missing 'path' attribute in 'bs:import' node",
                context.CreateOuterPosition()
            );
        }
 
 
        string? path = pathAttribute.Value;
 
        if (string.IsNullOrEmpty(path))
        {
            throw BadRuntimeException.Create(
                context.ExecutionContext.Scope,
                "Empty 'path' attribute in 'bs:import' node",
                context.CreateAttributePosition(pathAttribute)
            );
        }
 
        string data = BadFileSystem.ReadAllText(path);
 
        context.OutputNode.AppendChild(context.OutputDocument.CreateTextNode(data));
    }
}