`xml_parse`

Parse an XML string into a JSON object.

Parameters

inputstringone of input or source_key: XML string; supports ${ctx.key} interpolation.
source_keystringone of input or source_key: Context key containing the XML string.
output_keystringdefault "xml_data": Context key for the parsed JSON output.

Providing both input and source_key is an error.

Context Output

<output_key> (default xml_data) — the parsed JSON object.

XML to JSON Mapping

Elements become JSON objects keyed by tag name.
Attributes are prefixed with @ (e.g., @id, @lang).
Text content uses #text when mixed with attributes or child elements.
Simple text-only elements are simplified to string values.
Repeated sibling elements with the same tag become JSON arrays.

Example

local flow = Flow.new("parse_xml")

flow:step("parse", nodes.xml_parse({
    input = "<book><title>Rust Programming</title><year>2024</year></book>",
    output_key = "book"
}))

flow:step("done", nodes.log({
    message = "Book title: ${ctx.book}"
})):depends_on("parse")

return flow