encode.js 2.7 KB

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  1. "use strict";
  2. var __importDefault = (this && this.__importDefault) || function (mod) {
  3. return (mod && mod.__esModule) ? mod : { "default": mod };
  4. };
  5. Object.defineProperty(exports, "__esModule", { value: true });
  6. exports.escape = exports.encodeHTML = exports.encodeXML = void 0;
  7. var xml_json_1 = __importDefault(require("./maps/xml.json"));
  8. var inverseXML = getInverseObj(xml_json_1.default);
  9. var xmlReplacer = getInverseReplacer(inverseXML);
  10. exports.encodeXML = getInverse(inverseXML, xmlReplacer);
  11. var entities_json_1 = __importDefault(require("./maps/entities.json"));
  12. var inverseHTML = getInverseObj(entities_json_1.default);
  13. var htmlReplacer = getInverseReplacer(inverseHTML);
  14. exports.encodeHTML = getInverse(inverseHTML, htmlReplacer);
  15. function getInverseObj(obj) {
  16. return Object.keys(obj)
  17. .sort()
  18. .reduce(function (inverse, name) {
  19. inverse[obj[name]] = "&" + name + ";";
  20. return inverse;
  21. }, {});
  22. }
  23. function getInverseReplacer(inverse) {
  24. var single = [];
  25. var multiple = [];
  26. for (var _i = 0, _a = Object.keys(inverse); _i < _a.length; _i++) {
  27. var k = _a[_i];
  28. if (k.length === 1) {
  29. // Add value to single array
  30. single.push("\\" + k);
  31. }
  32. else {
  33. // Add value to multiple array
  34. multiple.push(k);
  35. }
  36. }
  37. // Add ranges to single characters.
  38. single.sort();
  39. for (var start = 0; start < single.length - 1; start++) {
  40. // Find the end of a run of characters
  41. var end = start;
  42. while (end < single.length - 1 &&
  43. single[end].charCodeAt(1) + 1 === single[end + 1].charCodeAt(1)) {
  44. end += 1;
  45. }
  46. var count = 1 + end - start;
  47. // We want to replace at least three characters
  48. if (count < 3)
  49. continue;
  50. single.splice(start, count, single[start] + "-" + single[end]);
  51. }
  52. multiple.unshift("[" + single.join("") + "]");
  53. return new RegExp(multiple.join("|"), "g");
  54. }
  55. var reNonASCII = /(?:[\x80-\uD7FF\uE000-\uFFFF]|[\uD800-\uDBFF][\uDC00-\uDFFF]|[\uD800-\uDBFF](?![\uDC00-\uDFFF])|(?:[^\uD800-\uDBFF]|^)[\uDC00-\uDFFF])/g;
  56. function singleCharReplacer(c) {
  57. // eslint-disable-next-line @typescript-eslint/no-non-null-assertion
  58. return "&#x" + c.codePointAt(0).toString(16).toUpperCase() + ";";
  59. }
  60. function getInverse(inverse, re) {
  61. return function (data) {
  62. return data
  63. .replace(re, function (name) { return inverse[name]; })
  64. .replace(reNonASCII, singleCharReplacer);
  65. };
  66. }
  67. var reXmlChars = getInverseReplacer(inverseXML);
  68. function escape(data) {
  69. return data
  70. .replace(reXmlChars, singleCharReplacer)
  71. .replace(reNonASCII, singleCharReplacer);
  72. }
  73. exports.escape = escape;