syntax.php.alternative.version

<?php

/**
 * This actually looks like the better implementation but I run into some caching issues on Angua with this. On Adora Belle it seemed ok.
 * It is possible that the problems were spurious and only due to an unnatural situation when switching identities and rights in testing
 * Test before adopting this code!
 */


/**
 * All DokuWiki plugins to extend the parser/rendering mechanism
 * need to inherit from this class
 */

// must be run within DokuWiki
if(!defined('DOKU_INC')) die();

if(!defined('DOKU_PLUGIN')) define('DOKU_PLUGIN',DOKU_INC.'lib/plugins/');
require_once(DOKU_PLUGIN.'syntax.php');

/**
 * All DokuWiki plugins to extend the parser/rendering mechanism
 * need to inherit from this class
 */
class syntax_plugin_showif extends DokuWiki_Syntax_Plugin {

/**
 * return some info
 */
function getInfo(){
    return array(
        'author' => 'Harald Ronge',
        'email'  => 'harald[at]turtur[.]nl',
        'date'   => '2013-10-15',
        'name'   => 'showif Plugin',
        'desc'   => 
'Shows text only if all of some conditions are true. Basic markup will be shown, but heading-markup is ignored.
Based on plugin nodisp from Myron Turner.

Admins and Managers will always see everything.

Syntax is <showif [condition1], [condition2], ...>[text]</showif>

Supported conditions are:

1. isloggedin
2. isnotloggedin
3. mayonlyread
4. mayatleastread
5. mayedit
6. isadmin

Administrators will always see everything except mayonlyread.
Not all combinations are useful ;-)
	
',
        'url'    => 'http://www.turtur.nl',
    );
}

//new function
function accepts($mode){
	return true;
}
    
function getType(){ return 'container'; } //was formatting
function getPType(){ return 'stack'; }
function getAllowedTypes() { return array(
            'container',
            'formatting',
            'substition',
            'protected',
            'disabled',
            'paragraphs',
            'baseonly' //new
); 
}   
function getSort(){ return 196; } //was 168
function connectTo($mode) {		
	$this->Lexer->addEntryPattern('<showif.*?>(?=.*?</showif>)',$mode,'plugin_showif'); 
}
function postConnect() { $this->Lexer->addExitPattern('</showif>','plugin_showif'); }


/**
 * Handle the match
     */
    function handle($match, $state, $pos, &$handler){

        switch ($state) {
          case DOKU_LEXER_ENTER : 
		    // remove <showif and >
			$conditions = trim(substr($match, 8, -1));
			// explode wanted auths
			$this->conditions = explode(",",$conditions);

			// FIXME remember conditions here

			$ReWriter = new Doku_Handler_Nest($handler->CallWriter,'plugin_showif');
			$handler->CallWriter = & $ReWriter;
			// don't add any plugin instruction:
            return false;

          case DOKU_LEXER_UNMATCHED :
                // unmatched data is cdata
                $handler->_addCall('cdata', array($match), $pos);
                // don't add any plugin instruction:
                return false;
                
          case DOKU_LEXER_EXIT :
               // get all calls we intercepted
                $calls = $handler->CallWriter->calls;

                // switch back to the old call writer
                $ReWriter = & $handler->CallWriter;
                $handler->CallWriter = & $ReWriter->CallWriter;

                // return a plugin instruction
                return array($state, $calls, $this->conditions);
        }

        return false;
    }

    /**
     * Create output
     */
    function render($mode, &$renderer, $data) {
        global $INFO;
        
        if($mode == 'xhtml'){
            $renderer->nocache(); // disable caching
	        list($state, $calls, $conditions) = $data;
    	    if($state != DOKU_LEXER_EXIT) return true;
           
			$show = FALSE;
			//$i = 0;
			// Loop through conditions
			foreach($conditions as $val) { 
				// All conditions have to be true
				if
				(
					(($val == "mayedit") && (auth_quickaclcheck($INFO['id'])) >= AUTH_EDIT)
					||
					//mayonlyread will be hidden for an administrator!
					(($val == "mayonlyread") && (auth_quickaclcheck($INFO['id'])) == AUTH_READ)
					||
					(($val == "mayatleastread") && (auth_quickaclcheck($INFO['id'])) >= AUTH_READ)
					||
					($val == "isloggedin" && ($_SERVER['REMOTE_USER']))
					||
					($val == "isnotloggedin" && !($_SERVER['REMOTE_USER']))
					||
					(($val == "isadmin") && ($INFO['isadmin'] || $INFO['ismanager'] ))
				) $show = TRUE;
				else {$show = FALSE; break;}
			}
			
			if ($show) {
				foreach($calls as $i){
					if(method_exists($renderer,$i[0])){
						call_user_func_array(array($renderer,$i[0]),$i[1]);
					}
				}
			}			
            return true;
        }
        return false;
    }


 
}
?>