190 lines
5.3 KiB
JavaScript
190 lines
5.3 KiB
JavaScript
/*
|
|
* Module dependencies
|
|
*/
|
|
import * as ElementType from "domelementtype";
|
|
import { encodeXML, escapeAttribute, escapeText } from "entities";
|
|
/**
|
|
* Mixed-case SVG and MathML tags & attributes
|
|
* recognized by the HTML parser.
|
|
*
|
|
* @see https://html.spec.whatwg.org/multipage/parsing.html#parsing-main-inforeign
|
|
*/
|
|
import { elementNames, attributeNames } from "./foreignNames.js";
|
|
const unencodedElements = new Set([
|
|
"style",
|
|
"script",
|
|
"xmp",
|
|
"iframe",
|
|
"noembed",
|
|
"noframes",
|
|
"plaintext",
|
|
"noscript",
|
|
]);
|
|
function replaceQuotes(value) {
|
|
return value.replace(/"/g, """);
|
|
}
|
|
/**
|
|
* Format attributes
|
|
*/
|
|
function formatAttributes(attributes, opts) {
|
|
var _a;
|
|
if (!attributes)
|
|
return;
|
|
const encode = ((_a = opts.encodeEntities) !== null && _a !== void 0 ? _a : opts.decodeEntities) === false
|
|
? replaceQuotes
|
|
: opts.xmlMode || opts.encodeEntities !== "utf8"
|
|
? encodeXML
|
|
: escapeAttribute;
|
|
return Object.keys(attributes)
|
|
.map((key) => {
|
|
var _a, _b;
|
|
const value = (_a = attributes[key]) !== null && _a !== void 0 ? _a : "";
|
|
if (opts.xmlMode === "foreign") {
|
|
/* Fix up mixed-case attribute names */
|
|
key = (_b = attributeNames.get(key)) !== null && _b !== void 0 ? _b : key;
|
|
}
|
|
if (!opts.emptyAttrs && !opts.xmlMode && value === "") {
|
|
return key;
|
|
}
|
|
return `${key}="${encode(value)}"`;
|
|
})
|
|
.join(" ");
|
|
}
|
|
/**
|
|
* Self-enclosing tags
|
|
*/
|
|
const singleTag = new Set([
|
|
"area",
|
|
"base",
|
|
"basefont",
|
|
"br",
|
|
"col",
|
|
"command",
|
|
"embed",
|
|
"frame",
|
|
"hr",
|
|
"img",
|
|
"input",
|
|
"isindex",
|
|
"keygen",
|
|
"link",
|
|
"meta",
|
|
"param",
|
|
"source",
|
|
"track",
|
|
"wbr",
|
|
]);
|
|
/**
|
|
* Renders a DOM node or an array of DOM nodes to a string.
|
|
*
|
|
* Can be thought of as the equivalent of the `outerHTML` of the passed node(s).
|
|
*
|
|
* @param node Node to be rendered.
|
|
* @param options Changes serialization behavior
|
|
*/
|
|
export function render(node, options = {}) {
|
|
const nodes = "length" in node ? node : [node];
|
|
let output = "";
|
|
for (let i = 0; i < nodes.length; i++) {
|
|
output += renderNode(nodes[i], options);
|
|
}
|
|
return output;
|
|
}
|
|
export default render;
|
|
function renderNode(node, options) {
|
|
switch (node.type) {
|
|
case ElementType.Root:
|
|
return render(node.children, options);
|
|
// @ts-expect-error We don't use `Doctype` yet
|
|
case ElementType.Doctype:
|
|
case ElementType.Directive:
|
|
return renderDirective(node);
|
|
case ElementType.Comment:
|
|
return renderComment(node);
|
|
case ElementType.CDATA:
|
|
return renderCdata(node);
|
|
case ElementType.Script:
|
|
case ElementType.Style:
|
|
case ElementType.Tag:
|
|
return renderTag(node, options);
|
|
case ElementType.Text:
|
|
return renderText(node, options);
|
|
}
|
|
}
|
|
const foreignModeIntegrationPoints = new Set([
|
|
"mi",
|
|
"mo",
|
|
"mn",
|
|
"ms",
|
|
"mtext",
|
|
"annotation-xml",
|
|
"foreignObject",
|
|
"desc",
|
|
"title",
|
|
]);
|
|
const foreignElements = new Set(["svg", "math"]);
|
|
function renderTag(elem, opts) {
|
|
var _a;
|
|
// Handle SVG / MathML in HTML
|
|
if (opts.xmlMode === "foreign") {
|
|
/* Fix up mixed-case element names */
|
|
elem.name = (_a = elementNames.get(elem.name)) !== null && _a !== void 0 ? _a : elem.name;
|
|
/* Exit foreign mode at integration points */
|
|
if (elem.parent &&
|
|
foreignModeIntegrationPoints.has(elem.parent.name)) {
|
|
opts = { ...opts, xmlMode: false };
|
|
}
|
|
}
|
|
if (!opts.xmlMode && foreignElements.has(elem.name)) {
|
|
opts = { ...opts, xmlMode: "foreign" };
|
|
}
|
|
let tag = `<${elem.name}`;
|
|
const attribs = formatAttributes(elem.attribs, opts);
|
|
if (attribs) {
|
|
tag += ` ${attribs}`;
|
|
}
|
|
if (elem.children.length === 0 &&
|
|
(opts.xmlMode
|
|
? // In XML mode or foreign mode, and user hasn't explicitly turned off self-closing tags
|
|
opts.selfClosingTags !== false
|
|
: // User explicitly asked for self-closing tags, even in HTML mode
|
|
opts.selfClosingTags && singleTag.has(elem.name))) {
|
|
if (!opts.xmlMode)
|
|
tag += " ";
|
|
tag += "/>";
|
|
}
|
|
else {
|
|
tag += ">";
|
|
if (elem.children.length > 0) {
|
|
tag += render(elem.children, opts);
|
|
}
|
|
if (opts.xmlMode || !singleTag.has(elem.name)) {
|
|
tag += `</${elem.name}>`;
|
|
}
|
|
}
|
|
return tag;
|
|
}
|
|
function renderDirective(elem) {
|
|
return `<${elem.data}>`;
|
|
}
|
|
function renderText(elem, opts) {
|
|
var _a;
|
|
let data = elem.data || "";
|
|
// If entities weren't decoded, no need to encode them back
|
|
if (((_a = opts.encodeEntities) !== null && _a !== void 0 ? _a : opts.decodeEntities) !== false &&
|
|
!(!opts.xmlMode &&
|
|
elem.parent &&
|
|
unencodedElements.has(elem.parent.name))) {
|
|
data =
|
|
opts.xmlMode || opts.encodeEntities !== "utf8"
|
|
? encodeXML(data)
|
|
: escapeText(data);
|
|
}
|
|
return data;
|
|
}
|
|
function renderCdata(elem) {
|
|
return `<![CDATA[${elem.children[0].data}]]>`;
|
|
}
|
|
function renderComment(elem) {
|
|
return `<!--${elem.data}-->`;
|
|
}
|