urn.ts 2.2 KB

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  1. import { URISchemeHandler, URIComponents, URIOptions } from "../uri";
  2. import { pctEncChar, SCHEMES } from "../uri";
  3. export interface URNComponents extends URIComponents {
  4. nid?:string;
  5. nss?:string;
  6. }
  7. export interface URNOptions extends URIOptions {
  8. nid?:string;
  9. }
  10. const NID$ = "(?:[0-9A-Za-z][0-9A-Za-z\\-]{1,31})";
  11. const PCT_ENCODED$ = "(?:\\%[0-9A-Fa-f]{2})";
  12. const TRANS$$ = "[0-9A-Za-z\\(\\)\\+\\,\\-\\.\\:\\=\\@\\;\\$\\_\\!\\*\\'\\/\\?\\#]";
  13. const NSS$ = "(?:(?:" + PCT_ENCODED$ + "|" + TRANS$$ + ")+)";
  14. const URN_SCHEME = new RegExp("^urn\\:(" + NID$ + ")$");
  15. const URN_PATH = new RegExp("^(" + NID$ + ")\\:(" + NSS$ + ")$");
  16. const URN_PARSE = /^([^\:]+)\:(.*)/;
  17. const URN_EXCLUDED = /[\x00-\x20\\\"\&\<\>\[\]\^\`\{\|\}\~\x7F-\xFF]/g;
  18. //RFC 2141
  19. const handler:URISchemeHandler<URNComponents,URNOptions> = {
  20. scheme : "urn",
  21. parse : function (components:URIComponents, options:URNOptions):URNComponents {
  22. const matches = components.path && components.path.match(URN_PARSE);
  23. let urnComponents = components as URNComponents;
  24. if (matches) {
  25. const scheme = options.scheme || urnComponents.scheme || "urn";
  26. const nid = matches[1].toLowerCase();
  27. const nss = matches[2];
  28. const urnScheme = `${scheme}:${options.nid || nid}`;
  29. const schemeHandler = SCHEMES[urnScheme];
  30. urnComponents.nid = nid;
  31. urnComponents.nss = nss;
  32. urnComponents.path = undefined;
  33. if (schemeHandler) {
  34. urnComponents = schemeHandler.parse(urnComponents, options) as URNComponents;
  35. }
  36. } else {
  37. urnComponents.error = urnComponents.error || "URN can not be parsed.";
  38. }
  39. return urnComponents;
  40. },
  41. serialize : function (urnComponents:URNComponents, options:URNOptions):URIComponents {
  42. const scheme = options.scheme || urnComponents.scheme || "urn";
  43. const nid = urnComponents.nid;
  44. const urnScheme = `${scheme}:${options.nid || nid}`;
  45. const schemeHandler = SCHEMES[urnScheme];
  46. if (schemeHandler) {
  47. urnComponents = schemeHandler.serialize(urnComponents, options) as URNComponents;
  48. }
  49. const uriComponents = urnComponents as URIComponents;
  50. const nss = urnComponents.nss;
  51. uriComponents.path = `${nid || options.nid}:${nss}`;
  52. return uriComponents;
  53. },
  54. };
  55. export default handler;