yizhi-html-escape/dist/index.js

HTML escape character util

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.unescape = exports.escape = void 0;
const table_1 = require("./table");
/**
 * escape string to HTML special entities
 * @param str string
 * @returns
 */
function escape(str) {
    const buffer = [];
    let prev = 0;
    for (let i = 0; i < str.length; ++i) {
        const cc = str.charCodeAt(i);
        const name = table_1.escapeTable[cc];
        if (name) {
            buffer.push(str.substring(prev, i));
            buffer.push(`&${name};`);
            prev = i + 1;
        }
    }
    buffer.push(str.substring(prev));
    return buffer.join('');
}
exports.escape = escape;
/**
 * unescape HTML special entities to normal string
 * @param str string
 * @returns
 */
function unescape(str) {
    return str.replace(/&((\w+)|(#\d+));/g, (match, name) => {
        const code = (name[0] == '#') ? parseInt(name.substr(1)) : table_1.unescapeTable[name];
        if (!code || isNaN(code))
            return match;
        return String.fromCharCode(code);
    });
}
exports.unescape = unescape;
exports.default = { escape, unescape };