135 lines
2.6 KiB
JavaScript
135 lines
2.6 KiB
JavaScript
"use strict";
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Object.defineProperty(exports, "__esModule", { value: true });
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exports.escape = void 0;
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const strEscapeSequencesRegExp = /[\u0000-\u001f\u0022\u005c\ud800-\udfff]|[\ud800-\udbff](?![\udc00-\udfff])|(?:[^\ud800-\udbff]|^)[\udc00-\udfff]/;
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const strEscapeSequencesReplacer = /[\u0000-\u001f\u0022\u005c\ud800-\udfff]|[\ud800-\udbff](?![\udc00-\udfff])|(?:[^\ud800-\udbff]|^)[\udc00-\udfff]/g;
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const meta = [
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'\\u0000',
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'\\u0001',
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'\\u0002',
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'\\u0003',
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'\\u0004',
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'\\u0005',
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'\\u0006',
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'\\u0007',
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'\\b',
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'\\t',
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'\\n',
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'\\u000b',
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'\\f',
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'\\r',
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'\\u000e',
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'\\u000f',
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'\\u0010',
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'\\u0011',
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'\\u0012',
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'\\u0013',
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'\\u0014',
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'\\u0015',
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'\\u0016',
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'\\u0017',
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'\\u0018',
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'\\u0019',
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'\\u001a',
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'\\u001b',
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'\\u001c',
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'\\u001d',
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'\\u001e',
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'\\u001f',
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'',
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'',
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'\\"',
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'',
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'',
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'',
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'',
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'',
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'',
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'',
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'',
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'',
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'',
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'',
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'',
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'',
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'',
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'',
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'',
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'',
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'',
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'',
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'',
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'',
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'',
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'',
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'',
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'',
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'',
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'',
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'',
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'',
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'',
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'',
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'',
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'',
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'',
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'',
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'',
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'',
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'',
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'',
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'',
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'',
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'',
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'',
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'',
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'',
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'',
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'',
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'',
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'',
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'',
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'',
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'',
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'',
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'',
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'',
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'',
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'',
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'\\\\',
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];
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const esc_ = (str) => {
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if (str.length === 2)
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return str[0] + '\\u' + str.charCodeAt(1).toString(16);
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const charCode = str.charCodeAt(0);
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return meta.length > charCode ? meta[charCode] : '\\u' + charCode.toString(16);
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};
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const escape = (str) => {
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let point, last = 0, result = '';
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if (str.length < 5000 && !strEscapeSequencesRegExp.test(str))
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return str;
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if (str.length > 100)
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return str.replace(strEscapeSequencesReplacer, esc_);
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for (let i = 0; i < str.length; i++) {
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point = str.charCodeAt(i);
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if (point === 34 || point === 92 || point < 32) {
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result += str.slice(last, i) + meta[point];
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last = i + 1;
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}
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else if (point >= 0xd800 && point <= 0xdfff) {
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if (point <= 0xdbff && i + 1 < str.length) {
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point = str.charCodeAt(i + 1);
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if (point >= 0xdc00 && point <= 0xdfff) {
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i++;
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continue;
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}
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}
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result += str.slice(last, i) + '\\u' + point.toString(16);
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last = i + 1;
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}
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}
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result += str.slice(last);
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return result;
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};
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exports.escape = escape;
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//# sourceMappingURL=escape.js.map
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