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<?php
namespace Zotlabs\Lib;
class MessageFilter {
static public function evaluate($item,$incl,$excl) {
require_once('include/html2plain.php');
unobscure($item);
$text = prepare_text($item['body'],$item['mimetype']);
$text = html2plain(($item['title']) ? $item['title'] . ' ' . $text : $text);
$lang = null;
if((strpos($incl,'lang=') !== false) || (strpos($excl,'lang=') !== false) || (strpos($incl,'lang!=') !== false) || (strpos($excl,'lang!=') !== false)) {
$lang = detect_language($text);
}
$tags = ((is_array($item['term']) && count($item['term'])) ? $item['term'] : false);
// exclude always has priority
$exclude = (($excl) ? explode("\n",$excl) : null);
if($exclude) {
foreach($exclude as $word) {
$word = trim($word);
if(! $word)
continue;
if(substr($word,0,1) === '#' && $tags) {
foreach($tags as $t)
if((($t['ttype'] == TERM_HASHTAG) || ($t['ttype'] == TERM_COMMUNITYTAG)) && (($t['term'] === substr($word,1)) || (substr($word,1) === '*')))
return false;
}
elseif(substr($word,0,1) === '$' && $tags) {
foreach($tags as $t)
if(($t['ttype'] == TERM_CATEGORY) && (($t['term'] === substr($word,1)) || (substr($word,1) === '*')))
return false;
}
elseif((strpos($word,'/') === 0) && preg_match($word,$text))
return false;
elseif((strpos($word,'lang=') === 0) && ($lang) && (strcasecmp($lang,trim(substr($word,5))) == 0))
return false;
elseif((strpos($word,'lang!=') === 0) && ($lang) && (strcasecmp($lang,trim(substr($word,6))) != 0))
return false;
elseif(stristr($text,$word) !== false)
return false;
}
}
$include = (($incl) ? explode("\n",$incl) : null);
if($include) {
foreach($include as $word) {
$word = trim($word);
if(! $word)
continue;
if(substr($word,0,1) === '#' && $tags) {
foreach($tags as $t)
if((($t['ttype'] == TERM_HASHTAG) || ($t['ttype'] == TERM_COMMUNITYTAG)) && (($t['term'] === substr($word,1)) || (substr($word,1) === '*')))
return true;
}
elseif(substr($word,0,1) === '$' && $tags) {
foreach($tags as $t)
if(($t['ttype'] == TERM_CATEGORY) && (($t['term'] === substr($word,1)) || (substr($word,1) === '*')))
return true;
}
elseif((strpos($word,'/') === 0) && preg_match($word,$text))
return true;
elseif((strpos($word,'lang=') === 0) && ($lang) && (strcasecmp($lang,trim(substr($word,5))) == 0))
return true;
elseif((strpos($word,'lang!=') === 0) && ($lang) && (strcasecmp($lang,trim(substr($word,6))) != 0))
return true;
elseif(stristr($text,$word) !== false)
return true;
}
}
else {
return true;
}
return false;
}
}
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