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<?php
/**
* NoNumber Framework Helper File: Tags
*
* @package NoNumber Framework
* @version 14.11.6
*
* @author Peter van Westen <peter@nonumber.nl>
* @link http://www.nonumber.nl
* @copyright Copyright © 2014 NoNumber All Rights Reserved
* @license http://www.gnu.org/licenses/gpl-2.0.html GNU/GPL
*/
defined('_JEXEC') or die;
class nnTags
{
public static function getTagValues($string = '', $keys = array('title'), $separator = '|', $equal = '=', $limit = 0)
{
$temp_separator = '[[S]]';
$temp_equal = '[[E]]';
$tag_start = '[[T]]';
$tag_end = '[[/T]]';
// replace separators and equal signs with special markup
$string = str_replace(array($separator, $equal), array($temp_separator, $temp_equal), $string);
// replace protected separators and equal signs back to original
$string = str_replace(array('\\' . $temp_separator, '\\' . $temp_equal), array($separator, $equal), $string);
// protect all html tags
if (preg_match_all('#</?[a-z][^>]*>#si', $string, $tags, PREG_SET_ORDER) > 0)
{
foreach ($tags as $tag)
{
$string = str_replace(
$tag['0'],
$tag_start . base64_encode(str_replace(array($temp_separator, $temp_equal), array($separator, $equal), $tag['0'])) . $tag_end,
$string
);
}
}
// split string into array
$vals = $limit
? explode($temp_separator, $string, (int) $limit)
: explode($temp_separator, $string);
// initialize return vars
$tag_values = new stdClass;
$tag_values->params = array();
// loop through splits
foreach ($vals as $i => $keyval)
{
// spit part into key and val by equal sign
$keyval = explode($temp_equal, $keyval, 2);
if (isset($keyval['1']))
{
$keyval['1'] = str_replace(array($temp_separator, $temp_equal), array($separator, $equal), $keyval['1']);
}
// unprotect tags in key and val
foreach ($keyval as $key => $val)
{
if (preg_match_all('#' . preg_quote($tag_start, '#') . '(.*?)' . preg_quote($tag_end, '#') . '#si', $val, $tags, PREG_SET_ORDER) > 0)
{
foreach ($tags as $tag)
{
$val = str_replace($tag['0'], base64_decode($tag['1']), $val);
}
$keyval[trim($key)] = $val;
}
}
if (isset($keys[$i]))
{
$key = trim($keys[$i]);
// if value is in the keys array add as defined in keys array
// ignore equal sign
$val = implode($equal, $keyval);
if (substr($val, 0, strlen($key) + 1) == $key . '=')
{
$val = substr($val, strlen($key) + 1);
}
$tag_values->{$key} = $val;
unset($keys[$i]);
}
else
{
// else add as defined in the string
if (isset($keyval['1']))
{
$tag_values->{$keyval['0']} = $keyval['1'];
}
else
{
$tag_values->params[] = implode($equal, $keyval);
}
}
}
return $tag_values;
}
public static function setSurroundingTags($pre, $post, $tags = 0)
{
if ($tags == 0)
{
// tags that have a matching ending tag
$tags = array(
'div', 'p', 'span', 'pre', 'a',
'h1', 'h2', 'h3', 'h4', 'h5', 'h6',
'strong', 'b', 'em', 'i', 'u', 'big', 'small', 'font',
// html 5 stuff
'header', 'nav', 'section', 'article', 'aside', 'footer',
'figure', 'figcaption', 'details', 'summary', 'mark', 'time'
);
}
$a = explode('<', $pre);
$b = explode('</', $post);
if (count($b) > 1 && count($a) > 1)
{
$a = array_reverse($a);
$a_pre = array_pop($a);
$b_pre = array_shift($b);
$a_tags = $a;
foreach ($a_tags as $i => $a_tag)
{
$a[$i] = '<' . trim($a_tag);
$a_tags[$i] = preg_replace('#^([a-z0-9]+).*$#', '\1', trim($a_tag));
}
$b_tags = $b;
foreach ($b_tags as $i => $b_tag)
{
$b[$i] = '</' . trim($b_tag);
$b_tags[$i] = preg_replace('#^([a-z0-9]+).*$#', '\1', trim($b_tag));
}
foreach ($b_tags as $i => $b_tag)
{
if ($b_tag && in_array($b_tag, $tags))
{
foreach ($a_tags as $j => $a_tag)
{
if ($b_tag == $a_tag)
{
$a_tags[$i] = '';
$b[$i] = trim(preg_replace('#^</' . $b_tag . '.*?>#', '', $b[$i]));
$a[$j] = trim(preg_replace('#^<' . $a_tag . '.*?>#', '', $a[$j]));
break;
}
}
}
}
foreach ($a_tags as $i => $tag)
{
if ($tag && in_array($tag, $tags))
{
array_unshift($b, trim($a[$i]));
$a[$i] = '';
}
}
$a = array_reverse($a);
list($pre, $post) = array(implode('', $a), implode('', $b));
}
return array(trim($pre), trim($post));
}
}