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/*!
* JavaScript Linkify - v0.3 - 6/27/2009
* http://benalman.com/projects/javascript-linkify/
*
* Copyright (c) 2009 "Cowboy" Ben Alman
* Dual licensed under the MIT and GPL licenses.
* http://benalman.com/about/license/
*
* Some regexps adapted from http://userscripts.org/scripts/review/7122
*/
// Script: JavaScript Linkify: Process links in text!
//
// *Version: 0.3, Last updated: 6/27/2009*
//
// Project Home - http://benalman.com/projects/javascript-linkify/
// GitHub - http://github.com/cowboy/javascript-linkify/
// Source - http://github.com/cowboy/javascript-linkify/raw/master/ba-linkify.js
// (Minified) - http://github.com/cowboy/javascript-linkify/raw/master/ba-linkify.min.js (2.8kb)
//
// About: License
//
// Copyright (c) 2009 "Cowboy" Ben Alman,
// Dual licensed under the MIT and GPL licenses.
// http://benalman.com/about/license/
//
// About: Examples
//
// This working example, complete with fully commented code, illustrates one way
// in which this code can be used.
//
// Linkify - http://benalman.com/code/projects/javascript-linkify/examples/linkify/
//
// About: Support and Testing
//
// Information about what browsers this code has been tested in.
//
// Browsers Tested - Internet Explorer 6-8, Firefox 2-3.7, Safari 3-4, Chrome, Opera 9.6-10.
//
// About: Release History
//
// 0.3 - (6/27/2009) Initial release
// Function: linkify
//
// Turn text into linkified html.
//
// Usage:
//
// > var html = linkify( text [, options ] );
//
// Arguments:
//
// text - (String) Non-HTML text containing links to be parsed.
// options - (Object) An optional object containing linkify parse options.
//
// Options:
//
// callback (Function) - If specified, this will be called once for each link-
// or non-link-chunk with two arguments, text and href. If the chunk is
// non-link, href will be omitted. If unspecified, the default linkification
// callback is used.
// punct_regexp (RegExp) - A RegExp that will be used to trim trailing
// punctuation from links, instead of the default. If set to null, trailing
// punctuation will not be trimmed.
//
// Returns:
//
// (String) An HTML string containing links.
require ( [ "jquery" ] , function ( ) {
var
SCHEME = "[a-z\\d.-]+://" ,
IPV4 = "(?:(?:[0-9]|[1-9]\\d|1\\d{2}|2[0-4]\\d|25[0-5])\\.){3}(?:[0-9]|[1-9]\\d|1\\d{2}|2[0-4]\\d|25[0-5])" ,
HOSTNAME = "(?:(?:[^\\s!@#$%^&*()_=+[\\]{}\\\\|;:'\",.<>/?]+)\\.)+" ,
TLD = "(?:ac|ad|aero|ae|af|ag|ai|al|am|an|ao|aq|arpa|ar|asia|as|at|au|aw|ax|az|ba|bb|bd|be|bf|bg|bh|biz|bi|bj|bm|bn|bo|br|bs|bt|bv|bw|by|bz|cat|ca|cc|cd|cf|cg|ch|ci|ck|cl|cm|cn|coop|com|co|cr|cu|cv|cx|cy|cz|de|dj|dk|dm|do|dz|ec|edu|ee|eg|er|es|et|eu|fi|fj|fk|fm|fo|fr|ga|gb|gd|ge|gf|gg|gh|gi|gl|gm|gn|gov|gp|gq|gr|gs|gt|gu|gw|gy|hk|hm|hn|hr|ht|hu|id|ie|il|im|info|int|in|io|iq|ir|is|it|je|jm|jobs|jo|jp|ke|kg|kh|ki|km|kn|kp|kr|kw|ky|kz|la|lb|lc|li|lk|lr|ls|lt|lu|lv|ly|ma|mc|md|me|mg|mh|mil|mk|ml|mm|mn|mobi|mo|mp|mq|mr|ms|mt|museum|mu|mv|mw|mx|my|mz|name|na|nc|net|ne|nf|ng|ni|nl|no|np|nr|nu|nz|om|org|pa|pe|pf|pg|ph|pk|pl|pm|pn|pro|pr|ps|pt|pw|py|qa|re|ro|rs|ru|rw|sa|sb|sc|sd|se|sg|sh|si|sj|sk|sl|sm|sn|so|sr|st|su|sv|sy|sz|tc|td|tel|tf|tg|th|tj|tk|tl|tm|tn|to|tp|travel|tr|tt|tv|tw|tz|ua|ug|uk|um|us|uy|uz|va|vc|ve|vg|vi|vn|vu|wf|ws|xn--0zwm56d|xn--11b5bs3a9aj6g|xn--80akhbyknj4f|xn--9t4b11yi5a|xn--deba0ad|xn--g6w251d|xn--hgbk6aj7f53bba|xn--hlcj6aya9esc7a|xn--jxalpdlp|xn--kgbechtv|xn--zckzah|ye|yt|yu|za|zm|zw)" ,
HOST _OR _IP = "(?:" + HOSTNAME + TLD + "|" + IPV4 + ")" ,
PATH = "(?:[;/][^#?<>\\s]*)?" ,
QUERY _FRAG = "(?:\\?[^#<>\\s]*)?(?:#[^<>\\s]*)?" ,
URI1 = "\\b" + SCHEME + "[^<>\\s]+" ,
URI2 = "\\b" + HOST _OR _IP + PATH + QUERY _FRAG + "(?!\\w)" ,
MAILTO = "mailto:" ,
EMAIL = "(?:" + MAILTO + ")?[a-z0-9!#$%&'*+/=?^_`{|}~-]+(?:\\.[a-z0-9!#$%&'*+/=?^_`{|}~-]+)*@" + HOST _OR _IP + QUERY _FRAG + "(?!\\w)" ,
URI _RE = new RegExp ( "(?:" + URI1 + "|" + URI2 + "|" + EMAIL + ")" , "ig" ) ,
SCHEME _RE = new RegExp ( "^" + SCHEME , "i" ) ,
quotes = {
"'" : "`" ,
'>' : '<' ,
')' : '(' ,
']' : '[' ,
'}' : '{' ,
'»' : '«' ,
'› : '‹
} ,
default _options = {
callback : function ( text , href ) {
return href ? '<a href="' + href + '" title="' + href + '">' + text + '</a>' : text ;
} ,
punct _regexp : /(?:[!?.,:;'"]|(?:&|&)(?:lt|gt|quot|apos|raquo|laquo|rsaquo|lsaquo);)$/
} ;
window . linkify = function ( txt , options ) {
options = options || { } ;
// Temp variables.
var arr ,
i ,
link ,
href ,
// Output HTML.
html = '' ,
// Store text / link parts, in order, for re-combination.
parts = [ ] ,
// Used for keeping track of indices in the text.
idx _prev ,
idx _last ,
idx ,
link _last ,
// Used for trimming trailing punctuation and quotes from links.
matches _begin ,
matches _end ,
quote _begin ,
quote _end ;
// Initialize options.
for ( i in default _options ) {
if ( options [ i ] === undefined ) {
options [ i ] = default _options [ i ] ;
}
}
// Find links.
while ( arr = URI _RE . exec ( txt ) ) {
link = arr [ 0 ] ;
idx _last = URI _RE . lastIndex ;
idx = idx _last - link . length ;
// Not a link if preceded by certain characters.
if ( /[\/:]/ . test ( txt . charAt ( idx - 1 ) ) ) {
continue ;
}
// Trim trailing punctuation.
do {
// If no changes are made, we don't want to loop forever!
link _last = link ;
quote _end = link . substr ( - 1 )
quote _begin = quotes [ quote _end ] ;
// Ending quote character?
if ( quote _begin ) {
matches _begin = link . match ( new RegExp ( '\\' + quote _begin + '(?!$)' , 'g' ) ) ;
matches _end = link . match ( new RegExp ( '\\' + quote _end , 'g' ) ) ;
// If quotes are unbalanced, remove trailing quote character.
if ( ( matches _begin ? matches _begin . length : 0 ) < ( matches _end ? matches _end . length : 0 ) ) {
link = link . substr ( 0 , link . length - 1 ) ;
idx _last -- ;
}
}
// Ending non-quote punctuation character?
if ( options . punct _regexp ) {
link = link . replace ( options . punct _regexp , function ( a ) {
idx _last -= a . length ;
return '' ;
} ) ;
}
} while ( link . length && link !== link _last ) ;
href = link ;
// Add appropriate protocol to naked links.
if ( ! SCHEME _RE . test ( href ) ) {
href = ( href . indexOf ( '@' ) !== - 1 ? ( ! href . indexOf ( MAILTO ) ? '' : MAILTO )
: ! href . indexOf ( 'irc.' ) ? 'irc://'
: ! href . indexOf ( 'ftp.' ) ? 'ftp://'
: 'http://' )
+ href ;
}
// Push preceding non-link text onto the array.
if ( idx _prev != idx ) {
parts . push ( [ txt . slice ( idx _prev , idx ) ] ) ;
idx _prev = idx _last ;
}
// Push massaged link onto the array
parts . push ( [ link , href ] ) ;
} ;
// Push remaining non-link text onto the array.
parts . push ( [ txt . substr ( idx _prev ) ] ) ;
// Process the array items.
for ( i = 0 ; i < parts . length ; i ++ ) {
html += options . callback . apply ( window , parts [ i ] ) ;
}
// In case of catastrophic failure, return the original text;
return html || txt ;
} ;
} ) ( ) ;
Henry Oswald