git.dj3c1t.com Git - mtweb/blob - mw/env/modules/mw_env_sgbds.php

   1 <?php
   2
   3   class mw_env_sgbds extends mw_env{
   4
   5     private $sgbds;
   6
   7     public function sgbds(){
   8       if(isset($this->sgbds)) return $this->sgbds;
   9       $this->sgbds = array();
  10       $impls_dir = $this->path("mw_dir")."env/sgbd";
  11       if(!file_exists($impls_dir) || !is_dir($impls_dir)){
  12         return false;
  13       }
  14       if($dh = opendir($impls_dir)){
  15         $OK = true;
  16         while($OK && ($impl_file = readdir($dh)) !== false){
  17           if(substr($impl_file, 0 ,1) !== "." && substr($impl_file, -4) == ".php"){
  18             require_once $impls_dir."/".$impl_file;
  19             if(class_exists($class_name = substr($impl_file, 0, -4))){
  20               if(
  21                     method_exists($class_name, "name")
  22                 &&  method_exists($class_name, "extention_ok")
  23               ){
  24                 $impl = new $class_name($this);
  25                 if($impl->extention_ok($this)) $this->sgbds[$class_name] = $impl;
  26               }
  27             }
  28           }
  29         }
  30       }
  31       else{
  32         return false;
  33       }
  34       return $this->sgbds;
  35     }
  36
  37     public function load_sgbd(){
  38       if(($data = $this->data()) && $this->bdd("sgbd")){
  39         $sgbd_impl_file = $this->path("mw_dir")."env/sgbd/mw_".$this->bdd("sgbd").".php";
  40         if(!file_exists($sgbd_impl_file)){
  41           $this->erreur("Impossible de trouver le fichier d'implementation du sgbd ".$this->bdd("sgbd"), true);
  42         }
  43         $sgbd_impl = "mw_".$this->bdd("sgbd");
  44         if(!class_exists($sgbd_impl)) require_once $sgbd_impl_file;
  45         if(!class_exists($sgbd_impl)){
  46           $this->erreur("Impossible de trouver la classe d'implementation du sgbd ".$this->bdd("sgbd"), true);
  47         }
  48         $sgbd = new $sgbd_impl(
  49           $this,
  50           array(
  51             "host" => $this->bdd("host"),
  52             "base" => $this->bdd("base"),
  53             "user" => $this->bdd("user"),
  54             "password" => $this->bdd("password")
  55           )
  56         );
  57         if(!$sgbd->extention_ok()){
  58           $this->erreur("L'extention php ".$this->bdd("sgbd")." n'est pas install&eacute;e", true);
  59         }
  60         $data->set_sgbd($sgbd);
  61       }
  62     }
  63
  64   }
  65
  66   // -------------------------------------------------------------------------------------------
  67   //                                                                               class mw_sgbd
  68   //
  69
  70   abstract class mw_sgbd{
  71
  72     public $env;
  73     public $link;
  74     public $host;
  75     public $base;
  76     public $user;
  77     public $password;
  78     public $EXTENTION_OK;
  79
  80     public function __construct($env, $params = array()){
  81       $this->env = $env;
  82       $default_params = $this->default_params();
  83       $params = $this->prepare_params($params);
  84       $this->host = isset($params["host"]) ? $params["host"] : $default_params["host"];
  85       $this->base = isset($params["base"]) ? $params["base"] : $default_params["base"];
  86       $this->user = isset($params["user"]) ? $params["user"] : $default_params["user"];
  87       $this->password = isset($params["password"]) ? $params["password"] : $default_params["password"];
  88       $this->EXTENTION_OK = $this->validate_extention();
  89     }
  90
  91     public function name(){
  92       return "";
  93     }
  94
  95     public function default_params(){
  96       return array(
  97         "host" => "",
  98         "base" => "",
  99         "user" => "",
 100         "password" => ""
 101       );
 102     }
 103
 104     public function prepare_params($params){
 105       return $params;
 106     }
 107
 108     public function validate_extention(){
 109       return false;
 110     }
 111
 112     public function authentication_required(){
 113       return false;
 114     }
 115
 116     public function get_link(){
 117       return $this->link;
 118     }
 119
 120     public function extention_ok(){
 121       return $this->EXTENTION_OK;
 122     }
 123
 124     public function replace_prefixes($content){
 125       return (
 126         ($prefix_codes = array_keys($this->env->bdd("table_prefix"))) ?
 127           str_replace($prefix_codes, array_values($this->env->bdd("table_prefix")), $content)
 128         : $content
 129       );
 130     }
 131
 132   }