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37 lines
867 B
JavaScript
37 lines
867 B
JavaScript
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'use strict';
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var $ = require('../internals/export');
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var toString = require('../internals/to-string');
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var raw = /[\w*+\-./@]/;
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var hex = function (code, length) {
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var result = code.toString(16);
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while (result.length < length) result = '0' + result;
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return result;
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};
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// `escape` method
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// https://tc39.es/ecma262/#sec-escape-string
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$({ global: true }, {
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escape: function escape(string) {
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var str = toString(string);
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var result = '';
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var length = str.length;
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var index = 0;
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var chr, code;
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while (index < length) {
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chr = str.charAt(index++);
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if (raw.test(chr)) {
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result += chr;
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} else {
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code = chr.charCodeAt(0);
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if (code < 256) {
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result += '%' + hex(code, 2);
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} else {
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result += '%u' + hex(code, 4).toUpperCase();
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}
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}
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} return result;
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}
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});
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