forked from Rowland/EG
280 lines
11 KiB
JavaScript
280 lines
11 KiB
JavaScript
"use strict";
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Object.defineProperty(exports, "__esModule", { value: true });
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exports.UrlMatch = void 0;
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var tslib_1 = require("tslib");
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var abstract_match_1 = require("./abstract-match");
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var uri_utils_1 = require("../parser/uri-utils");
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/**
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* A regular expression used to remove the 'www.' from URLs.
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*/
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var wwwPrefixRegex = /^(https?:\/\/)?(?:www\.)?/i;
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/**
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* The regular expression used to remove the protocol-relative '//' from a URL
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* string, for purposes of formatting the anchor text. A protocol-relative URL
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* is, for example, "//yahoo.com"
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*/
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var protocolRelativeRegex = /^\/\//;
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/**
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* @class Autolinker.match.Url
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* @extends Autolinker.match.AbstractMatch
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*
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* Represents a Url match found in an input string which should be Autolinked.
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*
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* See this class's superclass ({@link Autolinker.match.Match}) for more details.
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*/
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var UrlMatch = /** @class */ (function (_super) {
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tslib_1.__extends(UrlMatch, _super);
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/**
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* @method constructor
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* @param {Object} cfg The configuration properties for the Match
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* instance, specified in an Object (map).
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*/
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function UrlMatch(cfg) {
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var _this = _super.call(this, cfg) || this;
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/**
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* @public
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* @property {'url'} type
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*
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* A string name for the type of match that this class represents. Can be
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* used in a TypeScript discriminating union to type-narrow from the
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* `Match` type.
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*/
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_this.type = 'url';
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/**
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* @cfg {String} url (required)
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*
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* The url that was matched.
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*/
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_this.url = ''; // default value just to get the above doc comment in the ES5 output and documentation generator
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/**
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* @cfg {"scheme"/"www"/"tld"} urlMatchType (required)
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*
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* The type of URL match that this class represents. This helps to determine
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* if the match was made in the original text with a prefixed scheme (ex:
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* 'http://www.google.com'), a prefixed 'www' (ex: 'www.google.com'), or
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* was matched by a known top-level domain (ex: 'google.com').
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*/
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_this.urlMatchType = 'scheme'; // default value just to get the above doc comment in the ES5 output and documentation generator
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/**
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* @cfg {Boolean} protocolRelativeMatch (required)
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*
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* `true` if the URL is a protocol-relative match. A protocol-relative match
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* is a URL that starts with '//', and will be either http:// or https://
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* based on the protocol that the site is loaded under.
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*/
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_this.protocolRelativeMatch = false; // default value just to get the above doc comment in the ES5 output and documentation generator
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/**
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* @cfg {Object} stripPrefix (required)
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*
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* The Object form of {@link Autolinker#cfg-stripPrefix}.
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*/
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_this.stripPrefix = {
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scheme: true,
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www: true,
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}; // default value just to get the above doc comment in the ES5 output and documentation generator
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/**
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* @cfg {Boolean} stripTrailingSlash (required)
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* @inheritdoc Autolinker#cfg-stripTrailingSlash
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*/
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_this.stripTrailingSlash = true; // default value just to get the above doc comment in the ES5 output and documentation generator
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/**
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* @cfg {Boolean} decodePercentEncoding (required)
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* @inheritdoc Autolinker#cfg-decodePercentEncoding
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*/
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_this.decodePercentEncoding = true; // default value just to get the above doc comment in the ES5 output and documentation generator
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/**
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* @private
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* @property {Boolean} protocolPrepended
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*
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* Will be set to `true` if the 'http://' protocol has been prepended to the {@link #url} (because the
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* {@link #url} did not have a protocol)
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*/
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_this.protocolPrepended = false;
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_this.urlMatchType = cfg.urlMatchType;
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_this.url = cfg.url;
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_this.protocolRelativeMatch = cfg.protocolRelativeMatch;
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_this.stripPrefix = cfg.stripPrefix;
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_this.stripTrailingSlash = cfg.stripTrailingSlash;
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_this.decodePercentEncoding = cfg.decodePercentEncoding;
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return _this;
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}
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/**
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* Returns a string name for the type of match that this class represents.
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* For the case of UrlMatch, returns 'url'.
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*
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* @return {String}
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*/
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UrlMatch.prototype.getType = function () {
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return 'url';
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};
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/**
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* Returns a string name for the type of URL match that this class
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* represents.
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*
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* This helps to determine if the match was made in the original text with a
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* prefixed scheme (ex: 'http://www.google.com'), a prefixed 'www' (ex:
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* 'www.google.com'), or was matched by a known top-level domain (ex:
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* 'google.com').
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*
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* @return {"scheme"/"www"/"tld"}
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*/
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UrlMatch.prototype.getUrlMatchType = function () {
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return this.urlMatchType;
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};
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/**
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* Returns the url that was matched, assuming the protocol to be 'http://' if the original
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* match was missing a protocol.
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*
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* @return {String}
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*/
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UrlMatch.prototype.getUrl = function () {
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var url = this.url;
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// if the url string doesn't begin with a scheme, assume 'http://'
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if (!this.protocolRelativeMatch &&
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this.urlMatchType !== 'scheme' &&
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!this.protocolPrepended) {
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url = this.url = 'http://' + url;
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this.protocolPrepended = true;
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}
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return url;
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};
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/**
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* Returns the anchor href that should be generated for the match.
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*
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* @return {String}
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*/
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UrlMatch.prototype.getAnchorHref = function () {
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var url = this.getUrl();
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return url.replace(/&/g, '&'); // any &'s in the URL should be converted back to '&' if they were displayed as & in the source html
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};
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/**
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* Returns the anchor text that should be generated for the match.
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*
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* @return {String}
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*/
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UrlMatch.prototype.getAnchorText = function () {
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var anchorText = this.getMatchedText();
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if (this.protocolRelativeMatch) {
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// Strip off any protocol-relative '//' from the anchor text
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anchorText = stripProtocolRelativePrefix(anchorText);
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}
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if (this.stripPrefix.scheme) {
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anchorText = stripSchemePrefix(anchorText);
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}
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if (this.stripPrefix.www) {
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anchorText = stripWwwPrefix(anchorText);
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}
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if (this.stripTrailingSlash) {
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anchorText = removeTrailingSlash(anchorText); // remove trailing slash, if there is one
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}
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if (this.decodePercentEncoding) {
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anchorText = removePercentEncoding(anchorText);
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}
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return anchorText;
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};
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return UrlMatch;
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}(abstract_match_1.AbstractMatch));
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exports.UrlMatch = UrlMatch;
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// Utility Functionality
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/**
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* Strips the scheme prefix (such as "http://" or "https://") from the given
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* `url`.
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*
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* @private
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* @param {String} url The text of the anchor that is being generated, for
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* which to strip off the url scheme.
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* @return {String} The `url`, with the scheme stripped.
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*/
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function stripSchemePrefix(url) {
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return url.replace(uri_utils_1.httpSchemePrefixRe, '');
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}
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/**
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* Strips the 'www' prefix from the given `url`.
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*
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* @private
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* @param {String} url The text of the anchor that is being generated, for
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* which to strip off the 'www' if it exists.
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* @return {String} The `url`, with the 'www' stripped.
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*/
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function stripWwwPrefix(url) {
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// If the URL doesn't actually include 'www.' in it, skip running the
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// .replace() regexp on it, which is fairly slow even just to check the
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// string for the 'www.'s existence. Most URLs these days do not have 'www.'
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// in it, so most of the time we skip running the .replace(). One other
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// option in the future is to run a state machine on the `url` string
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if (!url.includes('www.')) {
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return url;
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}
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else {
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return url.replace(wwwPrefixRegex, '$1'); // leave any scheme ($1), it one exists
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}
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}
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/**
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* Strips any protocol-relative '//' from the anchor text.
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*
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* @private
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* @param {String} text The text of the anchor that is being generated, for which to strip off the
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* protocol-relative prefix (such as stripping off "//")
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* @return {String} The `anchorText`, with the protocol-relative prefix stripped.
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*/
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function stripProtocolRelativePrefix(text) {
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return text.replace(protocolRelativeRegex, '');
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}
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/**
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* Removes any trailing slash from the given `anchorText`, in preparation for the text to be displayed.
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*
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* @private
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* @param {String} anchorText The text of the anchor that is being generated, for which to remove any trailing
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* slash ('/') that may exist.
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* @return {String} The `anchorText`, with the trailing slash removed.
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*/
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function removeTrailingSlash(anchorText) {
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if (anchorText.charAt(anchorText.length - 1) === '/') {
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anchorText = anchorText.slice(0, -1);
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}
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return anchorText;
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}
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/**
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* Decodes percent-encoded characters from the given `anchorText`, in
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* preparation for the text to be displayed.
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*
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* @private
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* @param {String} anchorText The text of the anchor that is being
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* generated, for which to decode any percent-encoded characters.
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* @return {String} The `anchorText`, with the percent-encoded characters
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* decoded.
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*/
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function removePercentEncoding(anchorText) {
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// First, convert a few of the known % encodings to the corresponding
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// HTML entities that could accidentally be interpretted as special
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// HTML characters
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// NOTE: This used to be written as 5 separate .replace() calls, but that
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// was 25% slower than the current form below according to jsperf
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var preProcessedEntityAnchorText = anchorText.replace(/%(?:22|26|27|3C|3E)/gi, function (match) {
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if (match === '%22')
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return '"'; // %22: '"' char
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if (match === '%26')
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return '&'; // %26: '&' char
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if (match === '%27')
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return '''; // %27: "'" char
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if (match === '%3C' || match === '%3c')
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return '<'; // %3C: '<' char
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/*if (match === '%3E' || match === '%3e')*/ return '>'; // %3E: '>' char
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});
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// Now attempt to URL-decode the rest of the anchor text. However,
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// decodeURIComponent() is a slow function. Only call it if we have
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// remaining %-encoded entities. Adding this check added ~300 ops/sec to
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// benchmark
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if (preProcessedEntityAnchorText.includes('%')) {
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try {
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return decodeURIComponent(preProcessedEntityAnchorText);
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// eslint-disable-next-line @typescript-eslint/no-unused-vars
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}
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catch (error) {
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// Invalid % escape sequence in the anchor text, we'll simply return
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// the preProcessedEntityAnchorText below
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}
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}
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return preProcessedEntityAnchorText;
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}
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//# sourceMappingURL=url-match.js.map
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