mirror of
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607 lines
27 KiB
JavaScript
607 lines
27 KiB
JavaScript
/*!
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* Autolinker.js
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* 0.11.0
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*
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* Copyright(c) 2014 Gregory Jacobs <greg@greg-jacobs.com>
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* MIT Licensed. http://www.opensource.org/licenses/mit-license.php
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*
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* https://github.com/gregjacobs/Autolinker.js
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*/
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/*global define, module */
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/*jshint undef:true, smarttabs:true */
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// Set up Autolinker appropriately for the environment.
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( function( root, factory ) {
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if( typeof define === 'function' && define.amd ) {
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define( factory ); // Define as AMD module if an AMD loader is present (ex: RequireJS).
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} else if( typeof exports !== 'undefined' ) {
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module.exports = factory(); // Define as CommonJS module for Node.js, if available.
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} else {
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root.Autolinker = factory(); // Finally, define as a browser global if no module loader.
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}
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}( this, function() {
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/**
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* @class Autolinker
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* @extends Object
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*
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* Utility class used to process a given string of text, and wrap the URLs, email addresses, and Twitter handles in
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* the appropriate anchor (<a>) tags to turn them into links.
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*
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* Any of the configuration options may be provided in an Object (map) provided to the Autolinker constructor, which
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* will configure how the {@link #link link()} method will process the links.
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*
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* For example:
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*
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* var autolinker = new Autolinker( {
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* newWindow : false,
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* truncate : 30
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* } );
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*
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* var html = autolinker.link( "Joe went to www.yahoo.com" );
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* // produces: 'Joe went to <a href="http://www.yahoo.com">yahoo.com</a>'
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*
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*
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* The {@link #static-link static link()} method may also be used to inline options into a single call, which may
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* be more convenient for one-off uses. For example:
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*
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* var html = Autolinker.link( "Joe went to www.yahoo.com", {
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* newWindow : false,
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* truncate : 30
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* } );
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* // produces: 'Joe went to <a href="http://www.yahoo.com">yahoo.com</a>'
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*
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* @constructor
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* @param {Object} [config] The configuration options for the Autolinker instance, specified in an Object (map).
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*/
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var Autolinker = function( cfg ) {
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cfg = cfg || {};
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// Assign the properties of `cfg` onto the Autolinker instance
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for( var prop in cfg )
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if( cfg.hasOwnProperty( prop ) ) this[ prop ] = cfg[ prop ];
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};
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Autolinker.prototype = {
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constructor : Autolinker, // fix constructor property
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/**
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* @cfg {Boolean} newWindow
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*
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* `true` if the links should open in a new window, `false` otherwise.
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*/
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newWindow : true,
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/**
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* @cfg {Boolean} stripPrefix
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*
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* `true` if 'http://' or 'https://' and/or the 'www.' should be stripped from the beginning of links, `false` otherwise.
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*/
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stripPrefix : true,
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/**
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* @cfg {Number} truncate
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*
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* A number for how many characters long URLs/emails/twitter handles should be truncated to inside the text of
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* a link. If the URL/email/twitter is over this number of characters, it will be truncated to this length by
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* adding a two period ellipsis ('..') into the middle of the string.
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*
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* For example: A url like 'http://www.yahoo.com/some/long/path/to/a/file' truncated to 25 characters might look
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* something like this: 'http://www...th/to/a/file'
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*/
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/**
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* @cfg {Boolean} twitter
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*
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* `true` if Twitter handles ("@example") should be automatically linked, `false` if they should not be.
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*/
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twitter : true,
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/**
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* @cfg {Boolean} email
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*
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* `true` if email addresses should be automatically linked, `false` if they should not be.
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*/
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email : true,
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/**
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* @cfg {Boolean} urls
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*
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* `true` if miscellaneous URLs should be automatically linked, `false` if they should not be.
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*/
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urls : true,
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/**
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* @cfg {String} className
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*
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* A CSS class name to add to the generated links. This class will be added to all links, as well as this class
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* plus url/email/twitter suffixes for styling url/email/twitter links differently.
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*
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* For example, if this config is provided as "myLink", then:
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*
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* 1) URL links will have the CSS classes: "myLink myLink-url"
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* 2) Email links will have the CSS classes: "myLink myLink-email", and
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* 3) Twitter links will have the CSS classes: "myLink myLink-twitter"
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*/
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className : "",
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/**
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* @private
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* @property {RegExp} matcherRegex
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*
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* The regular expression that matches URLs, email addresses, and Twitter handles.
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*
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* This regular expression has the following capturing groups:
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*
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* 1. Group that is used to determine if there is a Twitter handle match (i.e. @someTwitterUser). Simply check for its
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* existence to determine if there is a Twitter handle match. The next couple of capturing groups give information
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* about the Twitter handle match.
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* 2. The whitespace character before the @sign in a Twitter handle. This is needed because there are no lookbehinds in
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* JS regular expressions, and can be used to reconstruct the original string in a replace().
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* 3. The Twitter handle itself in a Twitter match. If the match is '@someTwitterUser', the handle is 'someTwitterUser'.
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* 4. Group that matches an email address. Used to determine if the match is an email address, as well as holding the full
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* address. Ex: 'me@my.com'
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* 5. Group that matches a URL in the input text. Ex: 'http://google.com', 'www.google.com', or just 'google.com'.
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* This also includes a path, url parameters, or hash anchors. Ex: google.com/path/to/file?q1=1&q2=2#myAnchor
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* 6. A protocol-relative ('//') match for the case of a 'www.' prefixed URL. Will be an empty string if it is not a
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* protocol-relative match. We need to know the character before the '//' in order to determine if it is a valid match
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* or the // was in a string we don't want to auto-link.
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* 7. A protocol-relative ('//') match for the case of a known TLD prefixed URL. Will be an empty string if it is not a
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* protocol-relative match. See #6 for more info.
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*/
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matcherRegex : (function() {
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var twitterRegex = /(^|[^\w])@(\w{1,15})/, // For matching a twitter handle. Ex: @gregory_jacobs
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emailRegex = /(?:[\-;:&=\+\$,\w\.]+@)/, // something@ for email addresses (a.k.a. local-part)
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protocolRegex = /(?:[A-Za-z]{3,9}:(?:\/\/)?)/, // match protocol, allow in format http:// or mailto:
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wwwRegex = /(?:www\.)/, // starting with 'www.'
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domainNameRegex = /[A-Za-z0-9\.\-]*[A-Za-z0-9\-]/, // anything looking at all like a domain, non-unicode domains, not ending in a period
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tldRegex = /\.(?:international|construction|contractors|enterprises|photography|productions|foundation|immobilien|industries|management|properties|technology|christmas|community|directory|education|equipment|institute|marketing|solutions|vacations|bargains|boutique|builders|catering|cleaning|clothing|computer|democrat|diamonds|graphics|holdings|lighting|partners|plumbing|supplies|training|ventures|academy|careers|company|cruises|domains|exposed|flights|florist|gallery|guitars|holiday|kitchen|neustar|okinawa|recipes|rentals|reviews|shiksha|singles|support|systems|agency|berlin|camera|center|coffee|condos|dating|estate|events|expert|futbol|kaufen|luxury|maison|monash|museum|nagoya|photos|repair|report|social|supply|tattoo|tienda|travel|viajes|villas|vision|voting|voyage|actor|build|cards|cheap|codes|dance|email|glass|house|mango|ninja|parts|photo|shoes|solar|today|tokyo|tools|watch|works|aero|arpa|asia|best|bike|blue|buzz|camp|club|cool|coop|farm|fish|gift|guru|info|jobs|kiwi|kred|land|limo|link|menu|mobi|moda|name|pics|pink|post|qpon|rich|ruhr|sexy|tips|vote|voto|wang|wien|wiki|zone|bar|bid|biz|cab|cat|ceo|com|edu|gov|int|kim|mil|net|onl|org|pro|pub|red|tel|uno|wed|xxx|xyz|ac|ad|ae|af|ag|ai|al|am|an|ao|aq|ar|as|at|au|aw|ax|az|ba|bb|bd|be|bf|bg|bh|bi|bj|bm|bn|bo|br|bs|bt|bv|bw|by|bz|ca|cc|cd|cf|cg|ch|ci|ck|cl|cm|cn|co|cr|cu|cv|cw|cx|cy|cz|de|dj|dk|dm|do|dz|ec|ee|eg|er|es|et|eu|fi|fj|fk|fm|fo|fr|ga|gb|gd|ge|gf|gg|gh|gi|gl|gm|gn|gp|gq|gr|gs|gt|gu|gw|gy|hk|hm|hn|hr|ht|hu|id|ie|il|im|in|io|iq|ir|is|it|je|jm|jo|jp|ke|kg|kh|ki|km|kn|kp|kr|kw|ky|kz|la|lb|lc|li|lk|lr|ls|lt|lu|lv|ly|ma|mc|md|me|mg|mh|mk|ml|mm|mn|mo|mp|mq|mr|ms|mt|mu|mv|mw|mx|my|mz|na|nc|ne|nf|ng|ni|nl|no|np|nr|nu|nz|om|pa|pe|pf|pg|ph|pk|pl|pm|pn|pr|ps|pt|pw|py|qa|re|ro|rs|ru|rw|sa|sb|sc|sd|se|sg|sh|si|sj|sk|sl|sm|sn|so|sr|st|su|sv|sx|sy|sz|tc|td|tf|tg|th|tj|tk|tl|tm|tn|to|tp|tr|tt|tv|tw|tz|ua|ug|uk|us|uy|uz|va|vc|ve|vg|vi|vn|vu|wf|ws|ye|yt|za|zm|zw)\b/, // match our known top level domains (TLDs)
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// Allow optional path, query string, and hash anchor, not ending in the following characters: "!:,.;"
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// http://blog.codinghorror.com/the-problem-with-urls/
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urlSuffixRegex = /(?:[\-A-Za-z0-9+&@#\/%?=~_()|!:,.;]*[\-A-Za-z0-9+&@#\/%=~_()|])?/; // note: optional part of the full regex
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return new RegExp( [
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'(', // *** Capturing group $1, which can be used to check for a twitter handle match. Use group $3 for the actual twitter handle though. $2 may be used to reconstruct the original string in a replace()
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// *** Capturing group $2, which matches the whitespace character before the '@' sign (needed because of no lookbehinds), and
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// *** Capturing group $3, which matches the actual twitter handle
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twitterRegex.source,
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')',
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'|',
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'(', // *** Capturing group $4, which is used to determine an email match
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emailRegex.source,
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domainNameRegex.source,
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tldRegex.source,
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')',
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'|',
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'(', // *** Capturing group $5, which is used to match a URL
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'(?:', // parens to cover match for protocol (optional), and domain
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'(?:', // non-capturing paren for a protocol-prefixed url (ex: http://google.com)
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protocolRegex.source,
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domainNameRegex.source,
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')',
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'|',
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'(?:', // non-capturing paren for a 'www.' prefixed url (ex: www.google.com)
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'(.?//)?', // *** Capturing group $6 for an optional protocol-relative URL. Must be at the beginning of the string or start with a non-word character
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wwwRegex.source,
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domainNameRegex.source,
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')',
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'|',
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'(?:', // non-capturing paren for known a TLD url (ex: google.com)
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'(.?//)?', // *** Capturing group $7 for an optional protocol-relative URL. Must be at the beginning of the string or start with a non-word character
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domainNameRegex.source,
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tldRegex.source,
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')',
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')',
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urlSuffixRegex.source, // match for path, query string, and/or hash anchor
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')'
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].join( "" ), 'gi' );
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} )(),
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/**
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* @private
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* @property {RegExp} protocolRelativeRegex
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*
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* The regular expression used to find protocol-relative URLs. A protocol-relative URL is, for example, "//yahoo.com"
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*
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* This regular expression needs to match the character before the '//', in order to determine if we should actually
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* autolink a protocol-relative URL. For instance, we want to autolink something like "//google.com", but we
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* don't want to autolink something like "abc//google.com"
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*/
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protocolRelativeRegex : /(.)?\/\//,
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/**
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* @private
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* @property {RegExp} htmlRegex
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*
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* The regular expression used to pull out HTML tags from a string. Handles namespaced HTML tags and
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* attribute names, as specified by http://www.w3.org/TR/html-markup/syntax.html.
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*
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* Capturing groups:
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*
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* 1. If it is an end tag, this group will have the '/'.
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* 2. The tag name.
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*/
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htmlRegex : (function() {
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var tagNameRegex = /[0-9a-zA-Z:]+/,
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attrNameRegex = /[^\s\0"'>\/=\x01-\x1F\x7F]+/, // the unicode range accounts for excluding control chars, and the delete char
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attrValueRegex = /(?:".*?"|'.*?'|[^'"=<>`\s]+)/; // double quoted, single quoted, or unquoted attribute values
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return new RegExp( [
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'<(/)?', // Beginning of a tag. Either '<' for a start tag, or '</' for an end tag. The slash or an empty string is Capturing Group 1.
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// The tag name (Capturing Group 2)
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'(' + tagNameRegex.source + ')',
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// Zero or more attributes following the tag name
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'(?:',
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'\\s+', // one or more whitespace chars before an attribute
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attrNameRegex.source,
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'(?:\\s*=\\s*' + attrValueRegex.source + ')?', // optional '=[value]'
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')*',
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'\\s*', // any trailing spaces before the closing '>'
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'>'
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].join( "" ), 'g' );
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} )(),
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/**
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* @private
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* @property {RegExp} urlPrefixRegex
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*
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* A regular expression used to remove the 'http://' or 'https://' and/or the 'www.' from URLs.
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*/
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urlPrefixRegex: /^(https?:\/\/)?(www\.)?/i,
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/**
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* Automatically links URLs, email addresses, and Twitter handles found in the given chunk of HTML.
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* Does not link URLs found within HTML tags.
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*
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* For instance, if given the text: `You should go to http://www.yahoo.com`, then the result
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* will be `You should go to <a href="http://www.yahoo.com">http://www.yahoo.com</a>`
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*
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* @method link
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* @param {String} textOrHtml The HTML or text to link URLs, email addresses, and Twitter handles within.
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* @return {String} The HTML, with URLs/emails/twitter handles automatically linked.
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*/
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link : function( textOrHtml ) {
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return this.processHtml( textOrHtml );
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},
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/**
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* Processes the given HTML to auto-link URLs/emails/Twitter handles.
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*
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* Finds the text around any HTML elements in the input `html`, which will be the text that is processed.
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* Any original HTML elements will be left as-is, as well as the text that is already wrapped in anchor tags.
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*
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* @private
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* @method processHtml
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* @param {String} html The input text or HTML to process in order to auto-link.
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* @return {String}
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*/
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processHtml : function( html ) {
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// Loop over the HTML string, ignoring HTML tags, and processing the text that lies between them,
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// wrapping the URLs in anchor tags
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var htmlRegex = this.htmlRegex,
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currentResult,
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inBetweenTagsText,
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lastIndex = 0,
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anchorTagStackCount = 0,
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resultHtml = [];
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while( ( currentResult = htmlRegex.exec( html ) ) !== null ) {
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var tagText = currentResult[ 0 ],
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tagName = currentResult[ 2 ],
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isClosingTag = !!currentResult[ 1 ];
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inBetweenTagsText = html.substring( lastIndex, currentResult.index );
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lastIndex = currentResult.index + tagText.length;
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// Process around anchor tags, and any inner text / html they may have
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if( tagName === 'a' ) {
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if( !isClosingTag ) { // it's the start <a> tag
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anchorTagStackCount++;
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resultHtml.push( this.processTextNode( inBetweenTagsText ) );
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} else { // it's the end </a> tag
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anchorTagStackCount = Math.max( anchorTagStackCount - 1, 0 ); // attempt to handle extraneous </a> tags by making sure the stack count never goes below 0
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if( anchorTagStackCount === 0 ) {
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resultHtml.push( inBetweenTagsText ); // We hit the matching </a> tag, simply add all of the text from the start <a> tag to the end </a> tag without linking it
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}
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}
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} else if( anchorTagStackCount === 0 ) { // not within an anchor tag, link the "in between" text
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resultHtml.push( this.processTextNode( inBetweenTagsText ) );
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} else {
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// if we have a tag that is in between anchor tags (ex: <a href="..."><b>google.com</b></a>),
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// just append the inner text
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resultHtml.push( inBetweenTagsText );
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}
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resultHtml.push( tagText ); // now add the text of the tag itself verbatim
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}
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// Process any remaining text after the last HTML element. Will process all of the text if there were no HTML elements.
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if( lastIndex < html.length ) {
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var processedTextNode = this.processTextNode( html.substring( lastIndex ) );
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resultHtml.push( processedTextNode );
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}
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return resultHtml.join( "" );
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},
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/**
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* Process the text that lies inbetween HTML tags. This method does the actual wrapping of URLs with
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* anchor tags.
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*
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* @private
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* @param {String} text The text to auto-link.
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* @return {String} The text with anchor tags auto-filled.
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*/
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processTextNode : function( text ) {
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var me = this, // for closures
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matcherRegex = this.matcherRegex,
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enableTwitter = this.twitter,
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enableEmailAddresses = this.email,
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enableUrls = this.urls;
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return text.replace( matcherRegex, function( matchStr, $1, $2, $3, $4, $5, $6, $7 ) {
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var twitterMatch = $1,
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twitterHandlePrefixWhitespaceChar = $2, // The whitespace char before the @ sign in a Twitter handle match. This is needed because of no lookbehinds in JS regexes
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twitterHandle = $3, // The actual twitterUser (i.e the word after the @ sign in a Twitter handle match)
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emailAddress = $4, // For both determining if it is an email address, and stores the actual email address
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urlMatch = $5, // The matched URL string
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protocolRelativeMatch = $6 || $7, // The '//' for a protocol-relative match, with the character that comes before the '//'
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prefixStr = "", // A string to use to prefix the anchor tag that is created. This is needed for the Twitter handle match
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suffixStr = ""; // A string to suffix the anchor tag that is created. This is used if there is a trailing parenthesis that should not be auto-linked.
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// Early exits with no replacements for:
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// 1) Disabled link types
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// 2) URL matches which do not have at least have one period ('.') in the domain name (effectively skipping over
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// matches like "abc:def")
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// 3) A protocol-relative url match (a URL beginning with '//') whose previous character is a word character
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// (effectively skipping over strings like "abc//google.com")
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if(
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( twitterMatch && !enableTwitter ) || ( emailAddress && !enableEmailAddresses ) || ( urlMatch && !enableUrls ) ||
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( urlMatch && urlMatch.indexOf( '.' ) === -1 ) || // At least one period ('.') must exist in the URL match for us to consider it an actual URL
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( urlMatch && /^[A-Za-z]{3,9}:/.test( urlMatch ) && !/:.*?[A-Za-z]/.test( urlMatch ) ) || // At least one letter character must exist in the domain name after a protocol match. Ex: skip over something like "git:1.0"
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( protocolRelativeMatch && /^[\w]\/\//.test( protocolRelativeMatch ) ) // a protocol-relative match which has a word character in front of it (so we can skip something like "abc//google.com")
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) {
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return matchStr;
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}
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// Handle a closing parenthesis at the end of the match, and exclude it if there is not a matching open parenthesis
|
|
// in the match. This handles cases like the string "wikipedia.com/something_(disambiguation)" (which should be auto-
|
|
// linked, and when it is enclosed in parenthesis itself, such as: "(wikipedia.com/something_(disambiguation))" (in
|
|
// which the outer parens should *not* be auto-linked.
|
|
var lastChar = matchStr.charAt( matchStr.length - 1 );
|
|
if( lastChar === ')' ) {
|
|
var openParensMatch = matchStr.match( /\(/g ),
|
|
closeParensMatch = matchStr.match( /\)/g ),
|
|
numOpenParens = ( openParensMatch && openParensMatch.length ) || 0,
|
|
numCloseParens = ( closeParensMatch && closeParensMatch.length ) || 0;
|
|
|
|
if( numOpenParens < numCloseParens ) {
|
|
matchStr = matchStr.substr( 0, matchStr.length - 1 ); // remove the trailing ")"
|
|
suffixStr = ")"; // this will be added after the <a> tag
|
|
}
|
|
}
|
|
|
|
|
|
var anchorHref = matchStr, // initialize both of these
|
|
anchorText = matchStr, // values as the full match
|
|
linkType;
|
|
|
|
// Process the urls that are found. We need to change URLs like "www.yahoo.com" to "http://www.yahoo.com" (or the browser
|
|
// will try to direct the user to "http://current-domain.com/www.yahoo.com"), and we need to prefix 'mailto:' to email addresses.
|
|
if( twitterMatch ) {
|
|
linkType = 'twitter';
|
|
prefixStr = twitterHandlePrefixWhitespaceChar;
|
|
anchorHref = 'https://twitter.com/' + twitterHandle;
|
|
anchorText = '@' + twitterHandle;
|
|
|
|
} else if( emailAddress ) {
|
|
linkType = 'email';
|
|
anchorHref = 'mailto:' + emailAddress;
|
|
anchorText = emailAddress;
|
|
|
|
} else { // url match
|
|
linkType = 'url';
|
|
|
|
if( protocolRelativeMatch ) {
|
|
// Strip off any protocol-relative '//' from the anchor text (leaving the previous non-word character
|
|
// intact, if there is one)
|
|
var protocolRelRegex = new RegExp( "^" + me.protocolRelativeRegex.source ), // for this one, we want to only match at the beginning of the string
|
|
charBeforeMatch = protocolRelativeMatch.match( protocolRelRegex )[ 1 ] || "";
|
|
|
|
prefixStr = charBeforeMatch + prefixStr; // re-add the character before the '//' to what will be placed before the <a> tag
|
|
anchorHref = anchorHref.replace( protocolRelRegex, "//" ); // remove the char before the match for the href
|
|
anchorText = anchorText.replace( protocolRelRegex, "" ); // remove both the char before the match and the '//' for the anchor text
|
|
|
|
} else if( !/^[A-Za-z]{3,9}:/i.test( anchorHref ) ) {
|
|
// url string doesn't begin with a protocol, assume http://
|
|
anchorHref = 'http://' + anchorHref;
|
|
}
|
|
}
|
|
|
|
// wrap the match in an anchor tag
|
|
var anchorTag = me.createAnchorTag( linkType, anchorHref, anchorText );
|
|
return prefixStr + anchorTag + suffixStr;
|
|
} );
|
|
},
|
|
|
|
|
|
/**
|
|
* Generates the actual anchor (<a>) tag to use in place of a source url/email/twitter link.
|
|
*
|
|
* @private
|
|
* @param {"url"/"email"/"twitter"} linkType The type of link that an anchor tag is being generated for.
|
|
* @param {String} anchorHref The href for the anchor tag.
|
|
* @param {String} anchorText The anchor tag's text (i.e. what will be displayed).
|
|
* @return {String} The full HTML for the anchor tag.
|
|
*/
|
|
createAnchorTag : function( linkType, anchorHref, anchorText ) {
|
|
var attributesStr = this.createAnchorAttrsStr( linkType, anchorHref );
|
|
anchorText = this.processAnchorText( anchorText );
|
|
|
|
return '<a ' + attributesStr + '>' + anchorText + '</a>';
|
|
},
|
|
|
|
|
|
/**
|
|
* Creates the string which will be the HTML attributes for the anchor (<a>) tag being generated.
|
|
*
|
|
* @private
|
|
* @param {"url"/"email"/"twitter"} linkType The type of link that an anchor tag is being generated for.
|
|
* @param {String} href The href for the anchor tag.
|
|
* @return {String} The anchor tag's attribute. Ex: `href="http://google.com" class="myLink myLink-url" target="_blank"`
|
|
*/
|
|
createAnchorAttrsStr : function( linkType, anchorHref ) {
|
|
var attrs = [ 'href="' + anchorHref + '"' ]; // we'll always have the `href` attribute
|
|
|
|
var cssClass = this.createCssClass( linkType );
|
|
if( cssClass ) {
|
|
attrs.push( 'class="' + cssClass + '"' );
|
|
}
|
|
if( this.newWindow ) {
|
|
attrs.push( 'target="_blank"' );
|
|
}
|
|
|
|
return attrs.join( " " );
|
|
},
|
|
|
|
|
|
/**
|
|
* Creates the CSS class that will be used for a given anchor tag, based on the `linkType` and the {@link #className}
|
|
* config.
|
|
*
|
|
* @private
|
|
* @param {"url"/"email"/"twitter"} linkType The type of link that an anchor tag is being generated for.
|
|
* @return {String} The CSS class string for the link. Example return: "myLink myLink-url". If no {@link #className}
|
|
* was configured, returns an empty string.
|
|
*/
|
|
createCssClass : function( linkType ) {
|
|
var className = this.className;
|
|
|
|
if( !className )
|
|
return "";
|
|
else
|
|
return className + " " + className + "-" + linkType; // ex: "myLink myLink-url", "myLink myLink-email", or "myLink myLink-twitter"
|
|
},
|
|
|
|
|
|
/**
|
|
* Processes the `anchorText` by stripping the URL prefix (if {@link #stripPrefix} is `true`), removing
|
|
* any trailing slash, and truncating the text according to the {@link #truncate} config.
|
|
*
|
|
* @private
|
|
* @param {String} anchorText The anchor tag's text (i.e. what will be displayed).
|
|
* @return {String} The processed `anchorText`.
|
|
*/
|
|
processAnchorText : function( anchorText ) {
|
|
if( this.stripPrefix ) {
|
|
anchorText = this.stripUrlPrefix( anchorText );
|
|
}
|
|
anchorText = this.removeTrailingSlash( anchorText ); // remove trailing slash, if there is one
|
|
anchorText = this.doTruncate( anchorText );
|
|
|
|
return anchorText;
|
|
},
|
|
|
|
|
|
/**
|
|
* Strips the URL prefix (such as "http://" or "https://") from the given text.
|
|
*
|
|
* @private
|
|
* @param {String} text The text of the anchor that is being generated, for which to strip off the
|
|
* url prefix (such as stripping off "http://")
|
|
* @return {String} The `anchorText`, with the prefix stripped.
|
|
*/
|
|
stripUrlPrefix : function( text ) {
|
|
return text.replace( this.urlPrefixRegex, '' );
|
|
},
|
|
|
|
|
|
/**
|
|
* Removes any trailing slash from the given `anchorText`, in prepration for the text to be displayed.
|
|
*
|
|
* @private
|
|
* @param {String} anchorText The text of the anchor that is being generated, for which to remove any trailing
|
|
* slash ('/') that may exist.
|
|
* @return {String} The `anchorText`, with the trailing slash removed.
|
|
*/
|
|
removeTrailingSlash : function( anchorText ) {
|
|
if( anchorText.charAt( anchorText.length - 1 ) === '/' ) {
|
|
anchorText = anchorText.slice( 0, -1 );
|
|
}
|
|
return anchorText;
|
|
},
|
|
|
|
|
|
/**
|
|
* Performs the truncation of the `anchorText`, if the `anchorText` is longer than the {@link #truncate} option.
|
|
* Truncates the text to 2 characters fewer than the {@link #truncate} option, and adds ".." to the end.
|
|
*
|
|
* @private
|
|
* @param {String} text The anchor tag's text (i.e. what will be displayed).
|
|
* @return {String} The truncated anchor text.
|
|
*/
|
|
doTruncate : function( anchorText ) {
|
|
var truncateLen = this.truncate;
|
|
|
|
// Truncate the anchor text if it is longer than the provided 'truncate' option
|
|
if( truncateLen && anchorText.length > truncateLen ) {
|
|
anchorText = anchorText.substring( 0, truncateLen - 2 ) + '..';
|
|
}
|
|
return anchorText;
|
|
}
|
|
|
|
};
|
|
|
|
|
|
/**
|
|
* Automatically links URLs, email addresses, and Twitter handles found in the given chunk of HTML.
|
|
* Does not link URLs found within HTML tags.
|
|
*
|
|
* For instance, if given the text: `You should go to http://www.yahoo.com`, then the result
|
|
* will be `You should go to <a href="http://www.yahoo.com">http://www.yahoo.com</a>`
|
|
*
|
|
* Example:
|
|
*
|
|
* var linkedText = Autolinker.link( "Go to google.com", { newWindow: false } );
|
|
* // Produces: "Go to <a href="http://google.com">google.com</a>"
|
|
*
|
|
* @static
|
|
* @method link
|
|
* @param {String} html The HTML text to link URLs within.
|
|
* @param {Object} [options] Any of the configuration options for the Autolinker class, specified in an Object (map).
|
|
* See the class description for an example call.
|
|
* @return {String} The HTML text, with URLs automatically linked
|
|
*/
|
|
Autolinker.link = function( text, options ) {
|
|
var autolinker = new Autolinker( options );
|
|
return autolinker.link( text );
|
|
};
|
|
|
|
|
|
return Autolinker;
|
|
|
|
} ) );
|