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<?php
/**
*
* Parses for image placement.
*
* @category Text
*
* @package Text_Wiki
*
* @author Paul M. Jones <pmjones@php.net>
*
* @license LGPL
*
* @version $Id$
*
*/
/**
*
* Parses for image placement.
*
* @category Text
*
* @package Text_Wiki
*
* @author Paul M. Jones <pmjones@php.net>
*
*/
class Text_Wiki_Parse_Default_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 __construct(&$obj)
{
$default = $this->conf;
parent::__construct($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", $default["path_regexp"]) ."#");
}
/**
* Constructor.
* We override the constructor to build up the url regex from config
*
* @param object &$obj the base conversion handler
* @return The parser object
* @access public
*/
function Text_Wiki_Parse_Default_Image(&$obj)
{
self::__construct($obj);
}
/**
*
* 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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