123 lines
5.0 KiB
PHP
123 lines
5.0 KiB
PHP
<?php
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/**
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* Injector that converts http, https and ftp text URLs to actual links.
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*/
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class HTMLPurifier_Injector_Linkify extends HTMLPurifier_Injector
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{
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public $name = 'Linkify';
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public $needed = array('a' => array('href'));
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public function handleText(&$token) {
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if (!$this->allowsElement('a')) return;
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//var_dump( $token->data ); exit;
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if (strpos($token->data, '://') === false) {
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// our really quick heuristic failed, abort
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// this may not work so well if we want to match things like
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// "google.com", but then again, most people don't
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return;
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}
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//print $token->data;
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// there is/are URL(s). Let's split the string:
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// Note: this regex is extremely permissive
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//$bits = preg_split('#((?:https?|ftp)://[^\s\'"<>()]+)#S', $token->data, -1, PREG_SPLIT_DELIM_CAPTURE);
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/* MODIFIED April 26, 2013
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@link http://community.invisionpower.com/resources/bugs.html/_/ip-board/links-being-corrupted-or-malformed-in-board-and-nexus-r41993
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Test case:
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http://invisionpower.com,
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http://invisionpower.com.
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http://invisionpower.com
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https://invisionpower.com
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https://blah.gov/blah-blah.as
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http://en.wikipedia.org/wiki/Chi_(mythology)
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http://en.wikipedia.org/wiki/Assassin's_Creed
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(http://google.com)
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*/
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preg_match_all( "#(.*?)(\()?((?:http|ftp|https):\/\/[\w\-_]+(?:\.[\w\-_]+)?(?:[\w\-\.,\'\(\)@?^=%&:/~\+\#]*[\w\-\@?^=%&/~\+\#]))(.*)(?(?=\S+)\S+)(.*)$#ims", $token->data, $matches );
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//$token = array();
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// $i = index
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// $c = count
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// $l = is link
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/*for ($i = 0, $c = count($bits), $l = false; $i < $c; $i++, $l = !$l) {
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if (!$l) {
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if ($bits[$i] === '') continue;
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$token[] = new HTMLPurifier_Token_Text($bits[$i]);
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} else {
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$token[] = new HTMLPurifier_Token_Start('a', array('href' => $bits[$i]));
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$token[] = new HTMLPurifier_Token_Text($bits[$i]);
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$token[] = new HTMLPurifier_Token_End('a');
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}
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}*/
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if( is_array($matches[0]) AND count($matches[0]) )
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{
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$token = array();
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foreach( $matches[0] as $k => $match )
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{
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if( !$matches[3][$k] )
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{
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$token[] = new HTMLPurifier_Token_Text($token->data);
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}
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else
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{
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if( $matches[1][$k] )
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{
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$token[] = new HTMLPurifier_Token_Text($matches[1][$k]);
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}
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if( $matches[2][$k] )
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{
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$token[] = new HTMLPurifier_Token_Text($matches[2][$k]);
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}
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if( !$matches[2][$k] AND !in_array( $matches[4][$k], array( '!', '.', ',' ) ) AND strpos( $matches[4][$k], ' ' ) === false AND ! preg_match( "#(\r|\n|\r\n)#i", $matches[4][$k] ) )
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{
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$matches[3][$k] .= $matches[4][$k];
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unset($matches[4][$k]);
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}
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$token[] = new HTMLPurifier_Token_Start('a', array('href' => str_replace( '\'', '%27', $matches[3][$k] )));
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$token[] = new HTMLPurifier_Token_Text($matches[3][$k]);
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$token[] = new HTMLPurifier_Token_End('a');
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if( $matches[4][$k] )
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{
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// Let's do some testing. We may need to recurse in on this line for extra links.
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$test = explode( ' ', $matches[4][$k] );
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foreach( $test AS $v )
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{
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if ( strpos( $v, 'http' ) !== false OR strpos( $v, 'https' ) !== false OR strpos( $v, 'ftp' ) !== false )
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{
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$token[] = new HTMLPurifier_Token_Start('a', array('href' => str_replace( '\'', '%27', $v )));
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$token[] = new HTMLPurifier_Token_Text($v);
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$token[] = new HTMLPurifier_Token_End('a');
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$token[] = new HTMLPurifier_Token_Text(' '); // Because we exploded the text, spaces were lost. Re-add them.
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}
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else
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{
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$token[] = new HTMLPurifier_Token_Text($v);
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$token[] = new HTMLPurifier_Token_Text(' '); // Because we exploded the text, spaces were lost. Re-add them.
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}
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}
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//$token[] = new HTMLPurifier_Token_Text($matches[4][$k]);
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}
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if( $matches[5][$k] )
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{
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$token[] = new HTMLPurifier_Token_Text( $matches[5][$k] );
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}
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}
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}
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}
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}
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}
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// vim: et sw=4 sts=4
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