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 ?>