ketting/dist/util/html.js

Opinionated HATEOAS / Rest client.

import sax from 'sax';
import { resolve } from './uri.js';
export function parseHtml(contextUri, body) {
    const parser = sax.parser(false, {});
    const links = [];
    const forms = [];
    parser.onopentag = node => {
        switch (node.name) {
            case 'LINK':
            case 'A':
                links.push(...parseLink(contextUri, node));
                break;
            case 'FORM':
                forms.push(...parseForm(contextUri, node));
                break;
        }
    };
    parser.write(body).close();
    return {
        forms,
        links,
    };
}
function parseLink(contextUri, node) {
    if (!node.attributes.REL) {
        return [];
    }
    if (!node.attributes.HREF) {
        return [];
    }
    const rels = node.attributes.REL;
    const links = [];
    for (const rel of rels.split(' ')) {
        const type = node.attributes.TYPE;
        const link = {
            rel,
            context: contextUri,
            href: node.attributes.HREF,
        };
        if (type)
            link.type = type;
        links.push(link);
    }
    return links;
}
function parseForm(contextUri, node) {
    const rels = node.attributes.REL || null;
    const id = node.attributes.ID || null;
    const action = node.attributes.ACTION || '';
    const method = node.attributes.METHOD || 'GET';
    const enctype = node.attributes.ENCTYPE || 'application/x-www-form-urlencoded';
    if (!rels) {
        return [{
                rel: null,
                id,
                action: resolve(contextUri, action),
                method,
                enctype,
            }];
    }
    const result = [];
    for (const rel of rels.split(' ')) {
        result.push({
            rel,
            id,
            action: resolve(contextUri, action),
            method,
            enctype,
        });
    }
    return result;
}
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