hexo/node_modules/ent/encode.js

40 lines
1.0 KiB
JavaScript

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