@loaders.gl/kml/dist/kml-loader.js

Framework-independent loader for the KML format

// loaders.gl
// SPDX-License-Identifier: MIT
// Copyright (c) vis.gl contributors
import { kml } from '@tmcw/togeojson';
import { DOMParser } from '@xmldom/xmldom';
// __VERSION__ is injected by babel-plugin-version-inline
// @ts-ignore TS2304: Cannot find name '__VERSION__'.
const VERSION = typeof "4.3.2" !== 'undefined' ? "4.3.2" : 'latest';
const KML_HEADER = `\
<?xml version="1.0" encoding="UTF-8"?>
<kml xmlns="http://www.opengis.net/kml/2.2">`;
/**
 * Loader for KML (Keyhole Markup Language)
 */
export const KMLLoader = {
    dataType: null,
    batchType: null,
    name: 'KML (Keyhole Markup Language)',
    id: 'kml',
    module: 'kml',
    version: VERSION,
    extensions: ['kml'],
    mimeTypes: ['application/vnd.google-earth.kml+xml'],
    text: true,
    tests: [KML_HEADER],
    parse: async (arrayBuffer, options) => parseTextSync(new TextDecoder().decode(arrayBuffer), options),
    parseTextSync,
    options: {
        kml: { shape: 'geojson-table' },
        gis: {}
    }
};
function parseTextSync(text, options) {
    const doc = new DOMParser().parseFromString(text, 'text/xml');
    const geojson = kml(doc);
    const kmlOptions = { ...KMLLoader.options.kml, ...options?.kml };
    switch (kmlOptions.shape) {
        case 'geojson-table': {
            const table = {
                shape: 'geojson-table',
                type: 'FeatureCollection',
                features: geojson.features
            };
            return table;
        }
        // case 'geojson':
        //   return geojson;
        // case 'binary':
        //   return geojsonToBinary(geojson.features);
        // case 'raw':
        //   return doc;
        case 'object-row-table':
            const table = {
                shape: 'object-row-table',
                data: geojson.features
            };
            return table;
        default:
            throw new Error(kmlOptions.shape);
    }
}