@bliztek/feed-generator/dist/esm/xml.js

A simple and lightweight Node.js library for generating RSS 2.0, Atom, and JSON Feed formats.

export const escapeXml = (str) => str
    .replace(/&/g, "&")
    .replace(/</g, "&lt;")
    .replace(/>/g, "&gt;")
    .replace(/"/g, "&quot;")
    .replace(/'/g, "&apos;");
const renderAttributes = (attrs) => {
    if (!attrs)
        return "";
    return Object.entries(attrs)
        .filter(([, v]) => v !== undefined && v !== false)
        .map(([k, v]) => ` ${k}="${escapeXml(String(v))}"`)
        .join("");
};
export const renderXml = (xmlNodes, depth = 0, compact = false) => {
    const ind = compact ? "" : "  ".repeat(depth);
    const nl = compact ? "" : "\n";
    return xmlNodes
        .map((node) => {
        var _a;
        if (typeof node === "string") {
            return `${ind}${node}`;
        }
        const attrs = renderAttributes(node.attributes);
        if (node.selfClosing) {
            return `${ind}<${node.tag}${attrs} />`;
        }
        // Leaf node with text content (single string child)
        if (((_a = node.children) === null || _a === void 0 ? void 0 : _a.length) === 1 &&
            typeof node.children[0] === "string") {
            const text = node.children[0];
            if (node.cdata) {
                // Escape ]]> sequences to prevent CDATA injection
                const safe = text.replace(/\]\]>/g, "]]]]><![CDATA[>");
                return `${ind}<${node.tag}${attrs}><![CDATA[${safe}]]></${node.tag}>`;
            }
            return `${ind}<${node.tag}${attrs}>${escapeXml(text)}</${node.tag}>`;
        }
        // No children
        if (!node.children || node.children.length === 0) {
            return `${ind}<${node.tag}${attrs}></${node.tag}>`;
        }
        // Nested children
        const inner = renderXml(node.children, depth + 1, compact);
        return `${ind}<${node.tag}${attrs}>${nl}${inner}${nl}${ind}</${node.tag}>`;
    })
        .join(nl);
};
export const xmlDeclaration = () => `<?xml version="1.0" encoding="UTF-8"?>`;
// Helper to create a simple text element
export const el = (tag, value, opts) => value !== undefined
    ? {
        tag,
        children: [value],
        cdata: opts === null || opts === void 0 ? void 0 : opts.cdata,
        attributes: opts === null || opts === void 0 ? void 0 : opts.attributes,
    }
    : null;
// Filter out nulls from a node list
export const nodes = (...items) => items.filter((n) => n != null);