git.dj3c1t.com Git - mtweb/blob - web/app/data/impl/xml/mw_xml_data_handler.php

   1 <?php
   2
   3   class mw_xml_data_handler{
   4
   5     var $xml_data;
   6     var $data_path;
   7     var $data_path_handler;
   8     var $last_index;
   9
  10     function mw_xml_data_handler($xml_data, $data_path){
  11       $this->xml_data = $xml_data;
  12       $this->data_path = $data_path.(substr($data_path, -1) != "/" ? "/" : "");
  13     }
  14
  15     function get_data($data_id){
  16       if(file_exists($this->xml_data->host().$this->xml_data->base().$this->data_path.$data_id.".xml")){
  17         return $this->xml_data->get_data($this->data_path, $data_id);
  18       }
  19       return false;
  20     }
  21
  22     function open_data($FETCH = true){
  23       clearstatcache();
  24       $INDEX_OK = false;
  25       if($this->xml_data->host() && $this->xml_data->base() && $this->data_path){
  26         if(is_dir($this->xml_data->host().$this->xml_data->base().$this->data_path) && is_writable($this->xml_data->host().$this->xml_data->base().$this->data_path)){
  27           if(!file_exists($this->xml_data->host().$this->xml_data->base().$this->data_path.".index")){
  28             if($fh = @fopen($this->xml_data->host().$this->xml_data->base().$this->data_path.".index", "w+")){
  29               if(@fwrite($fh, "0")){
  30                 $this->last_index = 0;
  31                 @fclose($fh);
  32                 $INDEX_OK = true;
  33               }
  34               else @fclose($fh);
  35             }
  36           }
  37           else{
  38             if(($this->buffer = @file_get_contents($this->xml_data->host().$this->xml_data->base().$this->data_path.".index")) !== false){
  39               if(preg_match("/^[0-9]+$/", $this->buffer)){
  40                 $this->last_index = (int)$this->buffer;
  41                 $INDEX_OK = true;
  42               }
  43             }
  44           }
  45         }
  46       }
  47       if($INDEX_OK){
  48         if($FETCH){
  49           if($this->data_path_handler = @opendir($this->xml_data->host().$this->xml_data->base().$this->data_path)){
  50             return true;
  51           }
  52           else{
  53             $this->close_data();
  54             return null;
  55           }
  56         }
  57         else return true;
  58       }
  59       else{
  60         $this->close_data();
  61         return null;
  62       }
  63     }
  64
  65     function fetch_assoc(){
  66       if($this->data_path_handler){
  67         $FORMAT_OK = false;
  68         while(!$FORMAT_OK && ($data_file = @readdir($this->data_path_handler)) !== false){
  69           if(substr($data_file, 0, 1) != "." && substr($data_file, -4) == ".xml") $FORMAT_OK = true;
  70         }
  71         if($FORMAT_OK) return $this->xml_data->get_data($this->data_path, substr($data_file, 0, -4));
  72       }
  73       return false;
  74     }
  75
  76     function add_data($data){
  77       $index = $this->inc_index();
  78       if(isset($index)){
  79         if(is_array($data)) return $this->xml_data->add_data($this->data_path, $index, $data);
  80       }
  81       return null;
  82     }
  83
  84     function inc_index(){
  85       clearstatcache();
  86       if(isset($this->last_index)){
  87         $index = $this->last_index + 1;
  88         if($fh = @fopen($this->xml_data->host().$this->xml_data->base().$this->data_path.".index", "w+")){
  89           if(@fwrite($fh, (string)$index)){
  90             $this->last_index = $index;
  91             @fclose($fh);
  92             return $index;
  93           }
  94           else @fclose($fh);
  95         }
  96       }
  97       return null;
  98     }
  99
 100     function set_data($data_file, $data){
 101       if(preg_match("/^[0-9]+\.xml$/", $data_file)){
 102         if(is_writable($this->xml_data->host().$this->xml_data->base().$this->data_path.$data_file)){
 103           if(is_array($data)){
 104             return $this->xml_data->set_data($this->data_path, substr($data_file, 0, -4), $data);
 105           }
 106         }
 107       }
 108       return null;
 109     }
 110
 111     function del_data($data_file){
 112       if(preg_match("/^[0-9]+\.xml$/", $data_file)){
 113         if(is_file($this->xml_data->host().$this->xml_data->base().$this->data_path.$data_file)){
 114           return $this->xml_data->del_data($this->data_path, substr($data_file, 0, -4));
 115         }
 116       }
 117       return null;
 118     }
 119
 120     function close_data(){
 121       $this->data_path= null;
 122       if($this->data_path_handler) @closedir($this->data_path_handler);
 123       $this->last_index = null;
 124     }
 125
 126   }
 127
 128 ?>