40 lines
1 KiB
JavaScript
40 lines
1 KiB
JavaScript
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var punycode = require('punycode');
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var revEntities = require('./reversed.json');
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module.exports = encode;
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function encode (str, opts) {
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if (typeof str !== 'string') {
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throw new TypeError('Expected a String');
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}
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if (!opts) opts = {};
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var numeric = true;
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if (opts.named) numeric = false;
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if (opts.numeric !== undefined) numeric = opts.numeric;
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var special = opts.special || {
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'"': true, "'": true,
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'<': true, '>': true,
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'&': true
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};
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var codePoints = punycode.ucs2.decode(str);
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var chars = [];
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for (var i = 0; i < codePoints.length; i++) {
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var cc = codePoints[i];
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var c = punycode.ucs2.encode([ cc ]);
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var e = revEntities[cc];
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if (e && (cc >= 127 || special[c]) && !numeric) {
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chars.push('&' + (/;$/.test(e) ? e : e + ';'));
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}
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else if (cc < 32 || cc >= 127 || special[c]) {
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chars.push('&#' + cc + ';');
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}
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else {
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chars.push(c);
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}
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}
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return chars.join('');
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}
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