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<?php
// vim: set expandtab tabstop=4 shiftwidth=4 softtabstop=4:
/**
* Wikilink rule end renderer for Xhtml
*
* PHP versions 4 and 5
*
* @category Text
* @package Text_Wiki
* @author Paul M. Jones <pmjones@php.net>
* @license http://www.gnu.org/copyleft/lesser.html LGPL License 2.1
* @version CVS: $Id: Wikilink.php,v 1.17 2006/02/28 03:15:09 justinpatrin Exp $
* @link http://pear.php.net/package/Text_Wiki
*/
/**
* This class renders wiki links in XHTML.
*
* @category Text
* @package Text_Wiki
* @author Paul M. Jones <pmjones@php.net>
* @license http://www.gnu.org/copyleft/lesser.html LGPL License 2.1
* @version Release: @package_version@
* @link http://pear.php.net/package/Text_Wiki
*/
class Text_Wiki_Render_Xhtml_Wikilink extends Text_Wiki_Render {
var $conf = array(
'pages' => array(), // set to null or false to turn off page checks
'view_url' => 'http://example.com/index.php?page=%s',
'new_url' => 'http://example.com/new.php?page=%s',
'new_text' => '?',
'new_text_pos' => 'after', // 'before', 'after', or null/false
'css' => null,
'css_new' => null,
'exists_callback' => null // call_user_func() callback
);
/**
*
* Renders a token into XHTML.
*
* @access public
*
* @param array $options The "options" portion of the token (second
* element).
*
* @return string The text rendered from the token options.
*
*/
function token($options)
{
// make nice variable names (page, anchor, text)
extract($options);
// is there a "page existence" callback?
// we need to access it directly instead of through
// getConf() because we'll need a reference (for
// object instance method callbacks).
if (isset($this->conf['exists_callback'])) {
$callback =& $this->conf['exists_callback'];
} else {
$callback = false;
}
if ($callback) {
// use the callback function
$exists = call_user_func($callback, $page);
} else {
// no callback, go to the naive page array.
$list = $this->getConf('pages');
if (is_array($list)) {
// yes, check against the page list
$exists = in_array($page, $list);
} else {
// no, assume it exists
$exists = true;
}
}
// convert *after* checking against page names so as not to mess
// up what the user typed and what we're checking.
$page = $this->urlEncode($page);
$anchor = $this->urlEncode($anchor);
$text = $this->textEncode($text);
// does the page exist?
if ($exists) {
// PAGE EXISTS.
// link to the page view, but we have to build
// the HREF. we support both the old form where
// the page always comes at the end, and the new
// form that uses %s for sprintf()
$href = $this->getConf('view_url');
if (strpos($href, '%s') === false) {
// use the old form (page-at-end)
$href = $href . $page . $anchor;
} else {
// use the new form (sprintf format string)
$href = sprintf($href, $page . $anchor);
}
// get the CSS class and generate output
$css = $this->formatConf(' class="%s"', 'css');
$start = '<a'.$css.' href="'.$href.'">';
$end = '</a>';
} else {
// PAGE DOES NOT EXIST.
// link to a create-page url, but only if new_url is set
$href = $this->getConf('new_url', null);
// set the proper HREF
if (! $href || trim($href) == '') {
// no useful href, return the text as it is
$output = $text;
} else {
// yes, link to the new-page href, but we have to build
// it. we support both the old form where
// the page always comes at the end, and the new
// form that uses sprintf()
if (strpos($href, '%s') === false) {
// use the old form
$href = $href . $page;
} else {
// use the new form
$href = sprintf($href, $page);
}
}
// get the appropriate CSS class and new-link text
$css = $this->formatConf(' class="%s"', 'css_new');
$new = $this->getConf('new_text');
// what kind of linking are we doing?
$pos = $this->getConf('new_text_pos');
if (! $pos || ! $new) {
// no position (or no new_text), use css only on the page name
//do we really want this? it breaks the text output of the output
// if the page does not exist and the link text != page name
$text = $page;
$start = '<a'.$css.' href="'.$href.'">';
$end = '</a>';
} elseif ($pos == 'before') {
// use the new_text BEFORE the page name
$start = '<a'.$css.' href="'.$href.'">'.$new.'</a>';
$end = '';
} else {
// default, use the new_text link AFTER the page name
$start = '';
$end = '<a'.$css.' href="'.$href.'">'.$new.'</a>';
}
}
if (!strlen($text)) {
$start .= $this->textEncode($options['page']);
}
if (isset($type)) {
switch ($type) {
case 'start':
$output = $start;
break;
case 'end':
$output = $end;
break;
}
} else {
$output = $start.$text.$end;
}
return $output;
}
}
?>
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