File size: 1,735 Bytes
4888678 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 | 'use strict';
const internals = {};
module.exports = function (input) {
if (!input) {
return '';
}
let escaped = '';
for (let i = 0; i < input.length; ++i) {
const charCode = input.charCodeAt(i);
if (internals.isSafe(charCode)) {
escaped += input[i];
}
else {
escaped += internals.escapeHtmlChar(charCode);
}
}
return escaped;
};
internals.escapeHtmlChar = function (charCode) {
const namedEscape = internals.namedHtml.get(charCode);
if (namedEscape) {
return namedEscape;
}
if (charCode >= 256) {
return '&#' + charCode + ';';
}
const hexValue = charCode.toString(16).padStart(2, '0');
return `&#x${hexValue};`;
};
internals.isSafe = function (charCode) {
return internals.safeCharCodes.has(charCode);
};
internals.namedHtml = new Map([
[38, '&'],
[60, '<'],
[62, '>'],
[34, '"'],
[160, ' '],
[162, '¢'],
[163, '£'],
[164, '¤'],
[169, '©'],
[174, '®']
]);
internals.safeCharCodes = (function () {
const safe = new Set();
for (let i = 32; i < 123; ++i) {
if ((i >= 97) || // a-z
(i >= 65 && i <= 90) || // A-Z
(i >= 48 && i <= 57) || // 0-9
i === 32 || // space
i === 46 || // .
i === 44 || // ,
i === 45 || // -
i === 58 || // :
i === 95) { // _
safe.add(i);
}
}
return safe;
}());
|