'use strict';
Object.defineProperty(exports, '__esModule', {
    value: true
});
exports.escapeText = exports.escapeAttribute = exports.escapeUTF8 = exports.escape = exports.encodeXML = exports.getCodePoint = exports.xmlReplacer = void 0;
exports.xmlReplacer = /["&'<>$\x80-\uFFFF]/g;
var xmlCodeMap = new Map([
    [34, '&quot;'],
    [38, '&amp;'],
    [39, '&apos;'],
    [60, '&lt;'],
    [62, '&gt;']
]);
// For compatibility with node < 4, we wrap `codePointAt`
exports.getCodePoint =
    String.prototype.codePointAt != null
        ? function (str, index) {
              return str.codePointAt(index);
          }
        : // http://mathiasbynens.be/notes/javascript-encoding#surrogate-formulae
          function (c, index) {
              return (c.charCodeAt(index) & 64512) === 55296 ? (c.charCodeAt(index) - 55296) * 1024 + c.charCodeAt(index + 1) - 56320 + 65536 : c.charCodeAt(index);
          };
/**
 * Encodes all non-ASCII characters, as well as characters not valid in XML
 * documents using XML entities.
 *
 * If a character has no equivalent entity, a
 * numeric hexadecimal reference (eg. `&#xfc;`) will be used.
 */
function encodeXML(str) {
    var ret = '';
    var lastIdx = 0;
    var match;
    while ((match = exports.xmlReplacer.exec(str)) !== null) {
        var i = match.index;
        var char = str.charCodeAt(i);
        var next = xmlCodeMap.get(char);
        if (next !== undefined) {
            ret += str.substring(lastIdx, i) + next;
            lastIdx = i + 1;
        } else {
            ret += ''.concat(str.substring(lastIdx, i), '&#x').concat((0, exports.getCodePoint)(str, i).toString(16), ';');
            // Increase by 1 if we have a surrogate pair
            lastIdx = exports.xmlReplacer.lastIndex += Number((char & 64512) === 55296);
        }
    }
    return ret + str.substr(lastIdx);
}
exports.encodeXML = encodeXML;
/**
 * Encodes all non-ASCII characters, as well as characters not valid in XML
 * documents using numeric hexadecimal reference (eg. `&#xfc;`).
 *
 * Have a look at `escapeUTF8` if you want a more concise output at the expense
 * of reduced transportability.
 *
 * @param data String to escape.
 */
exports.escape = encodeXML;
function getEscaper(regex, map) {
    return function escape(data) {
        var match;
        var lastIdx = 0;
        var result = '';
        while ((match = regex.exec(data))) {
            if (lastIdx !== match.index) {
                result += data.substring(lastIdx, match.index);
            }
            // We know that this chararcter will be in the map.
            result += map.get(match[0].charCodeAt(0));
            // Every match will be of length 1
            lastIdx = match.index + 1;
        }
        return result + data.substring(lastIdx);
    };
}
/**
 * Encodes all characters not valid in XML documents using XML entities.
 *
 * Note that the output will be character-set dependent.
 *
 * @param data String to escape.
 */
exports.escapeUTF8 = getEscaper(/[&<>'"]/g, xmlCodeMap);
/**
 * Encodes all characters that have to be escaped in HTML attributes,
 * following {@link https://html.spec.whatwg.org/multipage/parsing.html#escapingString}.
 *
 * @param data String to escape.
 */
exports.escapeAttribute = getEscaper(
    /["&\u00A0]/g,
    new Map([
        [34, '&quot;'],
        [38, '&amp;'],
        [160, '&nbsp;']
    ])
);
/**
 * Encodes all characters that have to be escaped in HTML text,
 * following {@link https://html.spec.whatwg.org/multipage/parsing.html#escapingString}.
 *
 * @param data String to escape.
 */
exports.escapeText = getEscaper(
    /[&<>\u00A0]/g,
    new Map([
        [38, '&amp;'],
        [60, '&lt;'],
        [62, '&gt;'],
        [160, '&nbsp;']
    ])
);
//# sourceMappingURL=escape.js.map