ketting/dist/util/html.web.js

Opinionated HATEOAS / Rest client.

import { resolve } from './uri.js';
export function parseHtml(contextUri, body) {
    const parser = new DOMParser();
    const doc = parser.parseFromString(body, 'text/html');
    return {
        forms: formFromTags(contextUri, doc.getElementsByTagName('form')),
        links: [
            ...linkFromTags(contextUri, doc.getElementsByTagName('link')),
            ...linkFromTags(contextUri, doc.getElementsByTagName('a'))
        ]
    };
}
function linkFromTags(contextUri, elements) {
    const result = [];
    for (const node of elements) {
        const rels = node.getAttribute('rel');
        const href = node.getAttribute('href');
        const type = node.getAttribute('type') || undefined;
        if (!rels || !href) {
            continue;
        }
        for (const rel of rels.split(' ')) {
            const link = {
                rel: rel,
                context: contextUri,
                href: href,
            };
            if (type)
                link.type = type;
            result.push(link);
        }
    }
    return result;
}
function formFromTags(contextUri, elements) {
    const result = [];
    for (const node of elements) {
        const rels = node.getAttribute('rel');
        const action = node.getAttribute('action') || '';
        const enctype = node.getAttribute('enctype') || 'application/x-www-form-urlencoded';
        const id = node.getAttribute('id');
        const method = node.getAttribute('method') || 'GET';
        if (!rels) {
            result.push({
                rel: null,
                action: resolve(contextUri, action),
                enctype,
                id,
                method
            });
            continue;
        }
        for (const rel of rels.split(' ')) {
            const form = {
                rel,
                action: resolve(contextUri, action),
                enctype,
                id,
                method
            };
            result.push(form);
        }
    }
    return result;
}
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