5029d93523
- Add a `Stanza` class which can be used by Strophe because it has a
`tree()` function. This is what gets returned by the `stx` tagged
template.
- Throw an error when no valid namespace is on the stanza.
Strophe.Builder used to automatically add the `jabber:client` namespace,
but that doesn't happen with `toStanza`, so we need to fail if it's not
specified by the user.
- Use the Strophe XML Parser
This opens the door to NodeJS support
64 lines
1.7 KiB
JavaScript
64 lines
1.7 KiB
JavaScript
import log from '../log.js';
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import { Strophe } from 'strophe.js/src/strophe';
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const PARSE_ERROR_NS = 'http://www.w3.org/1999/xhtml';
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export function toStanza (string, throwErrorIfInvalidNS) {
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const doc = Strophe.xmlHtmlNode(string);
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if (doc.getElementsByTagNameNS(PARSE_ERROR_NS, 'parsererror').length) {
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throw new Error(`Parser Error: ${string}`);
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}
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const node = doc.firstElementChild;
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if (
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['message', 'iq', 'presence'].includes(node.nodeName.toLowerCase()) &&
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node.namespaceURI !== 'jabber:client' &&
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node.namespaceURI !== 'jabber:server'
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) {
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const err_msg = `Invalid namespaceURI ${node.namespaceURI}`;
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log.error(err_msg);
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if (throwErrorIfInvalidNS) throw new Error(err_msg);
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}
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return node;
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}
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/**
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* A Stanza represents a XML element used in XMPP (commonly referred to as
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* stanzas).
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*/
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class Stanza {
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constructor (strings, values) {
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this.strings = strings;
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this.values = values;
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}
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toString () {
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this.string = this.string ||
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this.strings.reduce((acc, str) => {
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const idx = this.strings.indexOf(str);
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const value = this.values.length > idx ? this.values[idx].toString() : '';
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return acc + str + value;
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}, '');
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return this.string;
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}
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tree () {
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this.node = this.node ?? toStanza(this.toString(), true);
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return this.node;
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}
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}
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/**
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* Tagged template literal function which generates {@link Stanza } objects
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*
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* Similar to the `html` function, from Lit.
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*
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* @example stx`<presence type="${type}"><show>${show}</show></presence>`
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*/
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export function stx (strings, ...values) {
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return new Stanza(strings, values);
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}
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