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Riley Schneider
177
database/php/pear/Text/Wiki/Render/Xhtml/Wikilink.php
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177
database/php/pear/Text/Wiki/Render/Xhtml/Wikilink.php
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<?php
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// vim: set expandtab tabstop=4 shiftwidth=4 softtabstop=4:
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/**
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* Wikilink rule end renderer for Xhtml
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*
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* PHP versions 4 and 5
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*
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* @category Text
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* @package Text_Wiki
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* @author Paul M. Jones <pmjones@php.net>
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* @license http://www.gnu.org/copyleft/lesser.html LGPL License 2.1
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* @version CVS: $Id: Wikilink.php 224670 2006-12-08 21:25:24Z justinpatrin $
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* @link http://pear.php.net/package/Text_Wiki
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*/
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/**
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* This class renders wiki links in XHTML.
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*
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* @category Text
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* @package Text_Wiki
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* @author Paul M. Jones <pmjones@php.net>
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* @license http://www.gnu.org/copyleft/lesser.html LGPL License 2.1
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* @version Release: @package_version@
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* @link http://pear.php.net/package/Text_Wiki
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*/
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class Text_Wiki_Render_Xhtml_Wikilink extends Text_Wiki_Render {
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var $conf = array(
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'pages' => array(), // set to null or false to turn off page checks
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'view_url' => 'http://example.com/index.php?page=%s',
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'new_url' => 'http://example.com/new.php?page=%s',
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'new_text' => '?',
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'new_text_pos' => 'after', // 'before', 'after', or null/false
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'css' => null,
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'css_new' => null,
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'exists_callback' => null // call_user_func() callback
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);
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/**
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*
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* Renders a token into XHTML.
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*
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* @access public
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*
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* @param array $options The "options" portion of the token (second
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* element).
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*
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* @return string The text rendered from the token options.
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*
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*/
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function token($options)
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{
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// make nice variable names (page, anchor, text)
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extract($options);
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// is there a "page existence" callback?
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// we need to access it directly instead of through
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// getConf() because we'll need a reference (for
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// object instance method callbacks).
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if (isset($this->conf['exists_callback'])) {
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$callback =& $this->conf['exists_callback'];
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} else {
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$callback = false;
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}
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if ($callback) {
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// use the callback function
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$exists = call_user_func($callback, $page);
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} else {
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// no callback, go to the naive page array.
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$list = $this->getConf('pages');
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if (is_array($list)) {
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// yes, check against the page list
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$exists = in_array($page, $list);
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} else {
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// no, assume it exists
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$exists = true;
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}
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}
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$anchor = '#'.$this->urlEncode(substr($anchor, 1));
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// does the page exist?
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if ($exists) {
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// PAGE EXISTS.
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// link to the page view, but we have to build
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// the HREF. we support both the old form where
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// the page always comes at the end, and the new
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// form that uses %s for sprintf()
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$href = $this->getConf('view_url');
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if (strpos($href, '%s') === false) {
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// use the old form (page-at-end)
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$href = $href . $this->urlEncode($page) . $anchor;
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} else {
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// use the new form (sprintf format string)
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$href = sprintf($href, $this->urlEncode($page)) . $anchor;
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}
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// get the CSS class and generate output
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$css = ' class="'.$this->textEncode($this->getConf('css')).'"';
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$start = '<a'.$css.' href="'.$this->textEncode($href).'">';
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$end = '</a>';
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} else {
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// PAGE DOES NOT EXIST.
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// link to a create-page url, but only if new_url is set
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$href = $this->getConf('new_url', null);
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// set the proper HREF
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if (! $href || trim($href) == '') {
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// no useful href, return the text as it is
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//TODO: This is no longer used, need to look closer into this branch
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$output = $text;
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} else {
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// yes, link to the new-page href, but we have to build
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// it. we support both the old form where
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// the page always comes at the end, and the new
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// form that uses sprintf()
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if (strpos($href, '%s') === false) {
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// use the old form
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$href = $href . $this->urlEncode($page);
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} else {
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// use the new form
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$href = sprintf($href, $this->urlEncode($page));
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}
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}
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// get the appropriate CSS class and new-link text
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$css = ' class="'.$this->textEncode($this->getConf('css_new')).'"';
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$new = $this->getConf('new_text');
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// what kind of linking are we doing?
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$pos = $this->getConf('new_text_pos');
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if (! $pos || ! $new) {
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// no position (or no new_text), use css only on the page name
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$start = '<a'.$css.' href="'.$this->textEncode($href).'">';
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$end = '</a>';
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} elseif ($pos == 'before') {
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// use the new_text BEFORE the page name
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$start = '<a'.$css.' href="'.$this->textEncode($href).'">'.$this->textEncode($new).'</a>';
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$end = '';
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} else {
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// default, use the new_text link AFTER the page name
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$start = '';
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$end = '<a'.$css.' href="'.$this->textEncode($href).'">'.$this->textEncode($new).'</a>';
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}
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}
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if (!strlen($text)) {
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$start .= $this->textEncode($page);
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}
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if (isset($type)) {
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switch ($type) {
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case 'start':
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$output = $start;
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break;
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case 'end':
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$output = $end;
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break;
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}
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} else {
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$output = $start.$this->textEncode($text).$end;
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}
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return $output;
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}
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}
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?>
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