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<?php
/**
*
* Parses for image placement.
*
* @category Text
*
* @package Text_Wiki
*
* @author Paul M. Jones <pmjones@php.net>
*
* @license LGPL
*
* @version $Id: Image.php,v 1.5 2005/09/12 11:34:44 toggg Exp $
*
*/
/**
*
* Parses for image placement.
*
* @category Text
*
* @package Text_Wiki
*
* @author Paul M. Jones <pmjones@php.net>
*
*/
class Text_Wiki_Parse_Image extends Text_Wiki_Parse {
/**
* URL schemes recognized by this rule.
*
* @access public
* @var array
*/
var $conf = array(
'schemes' => 'http|https|ftp|gopher|news',
'host_regexp' => '(?:[^.\s/"\'<\\\#delim#\ca-\cz]+\.)*[a-z](?:[-a-z0-9]*[a-z0-9])?\.?',
'path_regexp' => '(?:/[^\s"<\\\#delim#\ca-\cz]*)?'
);
/**
*
* The regular expression used to find source text matching this
* rule.
*
* @access public
*
* @var string
*
*/
var $regex = '/(\[\[image\s+)(.+?)(\]\])/i';
/**
* The regular expressions used to check ecternal urls
*
* @access public
* @var string
* @see parse()
*/
var $url = '';
/**
* Constructor.
* We override the constructor to build up the url regex from config
*
* @param object &$obj the base conversion handler
* @return The parser object
* @access public
*/
function Text_Wiki_Parse_Image(&$obj)
{
$default = $this->conf;
parent::Text_Wiki_Parse($obj);
// convert the list of recognized schemes to a regex OR,
$schemes = $this->getConf('schemes', $default['schemes']);
$this->url = str_replace( '#delim#', $this->wiki->delim,
'#(?:' . (is_array($schemes) ? implode('|', $schemes) : $schemes) . ')://'
. $this->getConf('host_regexp', $default['host_regexp'])
. $this->getConf('path_regexp', $default['path_regexp']) .'#');
}
/**
*
* Generates a token entry for the matched text. Token options are:
*
* 'src' => The image source, typically a relative path name.
*
* 'opts' => Any macro options following the source.
*
* @access public
*
* @param array &$matches The array of matches from parse().
*
* @return A delimited token number to be used as a placeholder in
* the source text.
*
*/
function process(&$matches)
{
$pos = strpos($matches[2], ' ');
if ($pos === false) {
$options = array(
'src' => $matches[2],
'attr' => array());
} else {
// everything after the space is attribute arguments
$options = array(
'src' => substr($matches[2], 0, $pos),
'attr' => $this->getAttrs(substr($matches[2], $pos+1))
);
// check the scheme case of external link
if (array_key_exists('link', $options['attr'])) {
// external url ?
if (($pos = strpos($options['attr']['link'], '://')) !== false) {
if (!preg_match($this->url, $options['attr']['link'])) {
return $matches[0];
}
} elseif (in_array('Wikilink', $this->wiki->disable)) {
return $matches[0]; // Wikilink disabled
}
}
}
return $this->wiki->addToken($this->rule, $options);
}
}
?>
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