[development] Supporting PostgreSQL schema level

[Jean-Michel Pouré]

Here is the proposed patch for PostgreSQL schema support:
http://drupal.org/node/211117

Kind regards,
Jean-Michel

*******************************************************************

Index: includes/database.pgsql.inc
===================================================================
RCS file: /cvs/drupal/drupal/includes/database.pgsql.inc,v
retrieving revision 1.68
diff -u -r1.68 database.pgsql.inc
--- includes/database.pgsql.inc 4 Jan 2008 09:31:48 -0000 1.68
+++ includes/database.pgsql.inc 17 Jan 2008 11:56:03 -0000
@@ -52,8 +52,12 @@

   $url = parse_url($url);
   $conn_string = '';
+  $schema='';

   // Decode url-encoded information in the db connection string
+  // Syntax is 'pgsql://username:password@localhost/databasename'
+  // or 'pgsql://username:password@localhost/databasename/schema'
+
   if (isset($url['user'])) {
     $conn_string .= ' user='. urldecode($url['user']);
   }
@@ -64,7 +68,9 @@
     $conn_string .= ' host='. urldecode($url['host']);
   }
   if (isset($url['path'])) {
-    $conn_string .= ' dbname='. substr(urldecode($url['path']), 1);
+    $conn_string .= ' dbname='.strtok(urldecode($url['path']), '/');
+    // check for additional schema information if required
+    $schema  .= strtok( '/');
   }
   if (isset($url['port'])) {
     $conn_string .= ' port='. urldecode($url['port']);
@@ -85,6 +91,11 @@
   // Restore error tracking setting
   ini_set('track_errors', $track_errors_previous);

+  if ($schema !== '')
+  {
+    @pg_query($connection, 'SET search_path TO ' . $schema);
+  }
+
   return $connection;
}