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<?php
/** 
	BREADCRUMB_LEVELS
	Version: 1.0 
	Replacementtag for BREADCRUMB_LEVELS
	This Replacementtag allows you to show an breadcrumb with setting the start-level 
  and the end-level of the category-structure. So it is possible to show only on 
  level or the sub's beginning with the choosen level. Level is the real level of
  the structure not the category-ID.
  
  Home will not be shown!
  
  The Start-level has to be lower than or equal to the End-Level otherwise the 
  Startlevel will be the first level (main below home)
  
  If there is no such level in the end-level so, the next possible level will be
  shown. If there is no level found, so you can decide if the whole breadcrumb 
  will be shown otherwise it can be hided.

		- for use of this you must set in ../config/phpwcms/conf.inc.php:
		  $phpwcms["allow_ext_init"]    = 1;       
		  $phpwcms["allow_ext_render"]  = 1; 
		- copy the provided .php-file into 
		  phpwcms_template/inc_script/frontend_render/

	{BREADCRUMB_LEVELS:0:0:0:} = {BREADCRUMB_LEVELS} without home
	All levels till the active will be shown


	{BREADCRUMB_LEVELS:1:1:0:|}
	Only the first level (main below home) will be shown
	
		·	:1 start level for display 
		·	:1 end level for display 
		·	:0 hide breadcrumb if there is no level to show
		·	:| the delimiter between breadcrumb-levels

	{BREADCRUMB_LEVELS:2:4:0:|}
  All levels between level 2 and level 4 will be shown

	ad1) All levels beginning with this level to the 4th level will be shown
	ad2) This is the end level for show, if you use 0 then all levels beginning 
      with the start level will be shown
	ad3) if you choose 0, then all levels will be shown, if you use 1 then the 
      breadcrumb will not be on display
  ad4) the delimiter between the breadcrumb-levels can be set if there is nothing
      the delimiter will be '>'


*************************************************************************************
   Copyright notice
   
    Parts FROM
   (c) 2002-2005 Oliver Georgi (oliver@phpwcms.de) // All rights reserved.
   (c) 2005 Jochen Regenfelder // All rights reserved.

   This script is for PHPWCMS. 
   
   The PHPWCMS web content management system is free software; you can redistribute 
   it and/or modify it under the terms of the GNU General Public License as published 
   by the Free Software Foundation; either version 2 of the License, or (at your option) 
   any later version.
  
   The GNU General Public License can be found at http://www.gnu.org/copyleft/gpl.html
   A copy is found in the textfile GPL.txt and important notices to the license 
   from the author is found in LICENSE.txt distributed with these scripts.
  
   This script is distributed in the hope that it will be useful, but WITHOUT ANY 
   WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A
   PARTICULAR PURPOSE.  See the GNU General Public License for more details.
 
   This copyright notice MUST APPEAR in all copies of the script!
*************************************************************************************
**/


// -------------------------------------------------------------

// #####--- modified by jochen--- 

function breadcrumb_levels ($end_id, $struct_array, $start_id, $hide_menu, $spacer="", $link_to="index.php") {
	//builds the breadcrumb menu based on given values
	//$link_to = the page on which the breadcrum part links
	//$root_name = name of the breadcrumb part if empty/false/0 $start_id
	//$spacer = how should breadcrumb parts be divided
	
	if ($spacer==false) $spacer=">";
  $spacer=" ".$spacer." ";
	
	$nohide=true;
	$act_id = $GLOBALS ['content']["cat_id"]; //store actual ID for later comparing	
	
  //if Home-level is disabled, then set the level to level 1
  //This is necassery if the given level is not included at the act leveltree

	
	//Proof if end_level is greater then start_level, because this are levels
	if (($end_id>$start_id) && ($start_id >0)) {
    $end_id=1;
  }
	
	// setting the start_level (this is the level of the last menu, but gives the 
  // ACAT_ID of the first menu)
	if ($start_id==0) {
    $start_id = intval($act_id);  
  } else {
  
  	$array_order = array_flip($GLOBALS['LEVEL_ID']);
		$level_key = array_search($start_id ,$array_order);
    
		if ($level_key==false){
      //if start_id can not be found, so take the last found level for dispay 
      // if it is greater then act_id, else use act_id
      $jr_max = count($array_order)-1;
      if ($jr_max >= $end_id){
        $start_id=$GLOBALS['LEVEL_ID'][$jr_max];
      } else {
        // IF no level is found and hide is selected
        if ($hide_menu==1){
          $nohide=false;
        } 
        $start_id = $act_id;          
      }
    } else {
      $start_id = intval($level_key);
    }
  }
		
	// setting the end_level (this is the level of the first menu, but gives the 
  // ACAT_ID of the last menu)
	if ($end_id==0) {
    $array_order = array_flip($GLOBALS['LEVEL_ID']);
    $end_id = array_search("1" ,$array_order);  
  } else {
    $array_order = array_flip($GLOBALS['LEVEL_ID']);
		$level_key = array_search($end_id ,$array_order);
		
    if ($level_key==false){
      //if no level is found hide breadcrumb  
      if ($hide_menu==1){
        $nohide=false;
      }      
      $end_id = array_search("1" ,$array_order);  
    } else {
      $end_id = intval($level_key);
    }
  }
 
 // #####--- END --- modified by jochen---
  
  if ($nohide){  

  	while ($start_id) { //get the breadcrumb path starting with given start_id
  		$data[$start_id] = $struct_array[$start_id]["acat_name"];
      // #####--- modified by jochen--- 
      // this is moved so that home is not displayed
		  if($end_id && $start_id == $end_id) break;
  		// #####--- END --- modified by jochen---
      $start_id		 = $struct_array[$start_id]["acat_struct"];
  	}
	
    $data[$start_id] = $struct_array[$start_id]["acat_name"];
    $crumbs_part = array_reverse($data, 1);	
	
	
  	if(is_array($crumbs_part) && count($crumbs_part)) {
  		$breadcrumb = "";
  		foreach($crumbs_part as $key => $value) {	
  			$alias = '';
   			if ($act_id != $key) {
  				if($breadcrumb) $breadcrumb .= $spacer;
  				if(!$struct_array[$key]["acat_redirect"]) {
  					$breadcrumb .= '<a href="index.php?';
  					$alias = $struct_array[$key]["acat_alias"];
  					$breadcrumb .= ($alias) ? html_specialchars($alias) : 'id='.$key.',0,0,1,0,0';
  					$breadcrumb .= '">';
  				} else {
  					$redirect = get_redirect_link($struct_array[$key]["acat_redirect"], ' ', '');
  					$breadcrumb .= '<a href="'.$redirect['link'].'"'.$redirect['target'].'>';
  				}
  				$breadcrumb .= html_specialchars($crumbs_part[$key]).'</a>';
  			} else {
  				if($breadcrumb) $breadcrumb .= $spacer;
  				$breadcrumb .= html_specialchars($crumbs_part[$key]);
  			}
  		}
  	} else {
  		$breadcrumb = "";
  	}
  	return $breadcrumb;
  }
}

// -------------------------------------------------------------



// -------------------------------------------------------------

//breadcrumb replacementtag
if( ! ( strpos($content["all"],'{BREADCRUMB_LEVELS')===false ) ) {
	$content["all"] = str_replace('{BREADCRUMB_LEVELS}', '{BREADCRUMB_LEVELS:0:0:0:>}', $content["all"]);
	$replace = 'breadcrumb_levels("$1", $content["struct"], "$2", "$3", "$4", "index.php");';
	$content["all"] = preg_replace('/\{BREADCRUMB_LEVELS:(.*?):(.*?):(.*?):(.*?)\}/e', $replace, $content["all"]);
}

// -------------------------------------------------------------


?>

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