From 280617b547f0480454690737e67bd95901e10656 Mon Sep 17 00:00:00 2001
From: Dominique Fournier <dominique@fournier38.fr>
Date: Wed, 18 Jun 2014 09:10:18 +0000
Subject: [PATCH] Add support to list of tables in dblayer for the 3 PDO
 engines Add support to connect database

git-svn-id: https://svn.fournier38.fr/svn/ProgSVN/trunk@1469 bf3deb0d-5f1a-0410-827f-c0cc1f45334c
---
 dblayer.php | 66 +++++++++++++++++++++++++++++++++++++++++++++++------
 1 file changed, 59 insertions(+), 7 deletions(-)

diff --git a/dblayer.php b/dblayer.php
index 88f39b8..f82270e 100644
--- a/dblayer.php
+++ b/dblayer.php
@@ -52,14 +52,65 @@ class dblayer extends PDO
   public function verifyAll ($datas) {}
   /** Debug of the SQL */
   public $debug = FALSE;
-  /** Return all the tables available in the database */
-  function listTables ()
+  /** The connecting DSN */
+  private $dsn = null;
+
+  /** Return the connected database name from DSN used to connect */
+  public function databasename ()
   {
-    $driver = $this->getAttribute (PDO::ATTR_DRIVER_NAME);
-    $rc = @include_once ("dbLayer".ucfirst ($driver).".php");
-    if ($rc === FALSE)
-      throw new Exception (sprintf (_("dbLayer driver %s not available"),
-                                    $driver), 500);
+    if ($this->db === null)
+      throw new Exception ("Database not connected");
+    $vals = explode (";", substr (strstr ($this->dsn, ":"), 1));
+    $dsnExplode = array ();
+    foreach ($vals as $val)
+    {
+      @list ($k, $v) = explode ("=", $val);
+      $dsnExplode[$k] = $v;
+    }
+    if (isset ($dsnExplode["dbname"]))
+      return $dsnExplode["dbname"];
+    return NULL;
+  }
+
+  /** Return all the tables available in the database */
+  public function listTables ()
+  {
+    if ($this->db === null)
+      throw new Exception ("Database not connected");
+    switch ($this->db->getAttribute(PDO::ATTR_DRIVER_NAME))
+    {
+    case "sqlite":
+      $req = "SELECT name FROM sqlite_master WHERE type='table'";
+      $st = $this->db->prepare ($req);
+      $st->execute ();
+      $res = array ();
+      while ($d = $st->fetch (PDO::FETCH_ASSOC))
+        $res[] = $d["name"];
+      break;
+    case "mysql":
+      $req = "SELECT TABLE_NAME
+              FROM information_schema.tables
+              WHERE TABLE_SCHEMA='".$this->databasename()."'";
+      $st = $this->db->prepare ($req);
+      $st->execute ();
+      $res = array ();
+      while ($d = $st->fetch (PDO::FETCH_ASSOC))
+        $res[] = $d["TABLE_NAME"];
+      break;
+    case "pgsql":
+      $req = "SELECT *
+              FROM pg_tables
+              WHERE schemaname = 'public'";
+      $st = $this->db->prepare ($req);
+      $st->execute ();
+      $res = array ();
+      while ($d = $st->fetch (PDO::FETCH_ASSOC))
+        $res[] = $d["tablename"];
+      break;
+    default:
+      throw new Exception (_("Unknown database driver in listTables"));
+    }
+    return $res;
   }
 
   // TODO !!
@@ -114,6 +165,7 @@ class dblayer extends PDO
       $this->db->exec("PRAGMA foreign_keys = ON");
       break;
     }
+    $this->dsn = $dsn;
   }
 
   /** Create a new entry in the table. Datas must be an indexed array