Xml.php

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<?php

namespace Rsi\Fred\Controller\View;

class Xml extends \Rsi\Fred\Controller\View{

  public function xmlEncode($parent,$data){
    $array = false;
    foreach($data as $key => $value)
      if($array = !\Rsi\Xml::validTag($key)){
        $parent['type'] = 'array';
        break;
      }
    foreach($data as $key => $value){
      $name = $array ? 'item' : $key;
      if(is_array($value)){
        $child = $parent->addChild($name ?: 'null');
        if(!$name) $child['null'] = 'true';
        $this->xmlEncode($child,$value);
      }
      else{
        $type = null;
        if($value === null) $type = null;
        elseif(is_bool($value)){
          $type = 'bool';
          $value = \Rsi\Str::bool($value);
        }
        elseif(is_int($value)) $type = 'int';
        elseif(is_float($value)) $type = 'float';
        else $value = htmlspecialchars($value);
        $child = $parent->addChild($name ?: 'null',$value);
        if(!$name) $child['null'] = 'true';
        if($type) $child['type'] = $type;
      }
      if($array) $child['key'] = $key;
    }
  }

  public function render(){
    if(!headers_sent()) header('Content-type: application/xml; charset=utf-8');
    $this->xmlEncode($root = new \SimpleXmlElement('<config />'),$this->data);
    print($root->asXML());
  }

}