DDC-1202 fix identifier quoting on MSSQL Platform

lib/Doctrine/DBAL/Platforms/MsSqlPlatform.php

@@ -22,7 +22,8 @@ namespace Doctrine\DBAL\Platforms;
 
 use Doctrine\DBAL\Schema\TableDiff;
 use Doctrine\DBAL\DBALException;
-use Doctrine\DBAL\Schema\Index, Doctrine\DBAL\Schema\Table;
+use Doctrine\DBAL\Schema\Index,
+    Doctrine\DBAL\Schema\Table;
 
 /**
  * The MsSqlPlatform provides the behavior, features and SQL dialect of the
@@ -441,11 +442,11 @@ class MsSqlPlatform extends AbstractPlatform
             $pattern = "'%[^' + $char + ']%'";
 
             if ($pos == self::TRIM_LEADING) {
-				return 'stuff(' . $str . ', 1, patindex(' . $pattern .', ' . $str . ') - 1, null)';
+                return 'stuff(' . $str . ', 1, patindex(' . $pattern . ', ' . $str . ') - 1, null)';
             } else if ($pos == self::TRIM_TRAILING) {
-				return 'reverse(stuff(reverse(' . $str . '), 1, patindex(' . $pattern .', reverse(' . $str . ')) - 1, null))';
+                return 'reverse(stuff(reverse(' . $str . '), 1, patindex(' . $pattern . ', reverse(' . $str . ')) - 1, null))';
             } else {
-				return 'reverse(stuff(reverse(stuff(' . $str . ', 1, patindex(' . $pattern .', ' . $str . ') - 1, null)), 1, patindex(' . $pattern .', reverse(stuff(' . $str . ', 1, patindex(' . $pattern .', ' . $str . ') - 1, null))) - 1, null))';
+                return 'reverse(stuff(reverse(stuff(' . $str . ', 1, patindex(' . $pattern . ', ' . $str . ') - 1, null)), 1, patindex(' . $pattern . ', reverse(stuff(' . $str . ', 1, patindex(' . $pattern . ', ' . $str . ') - 1, null))) - 1, null))';
             }
         }
     }
@@ -761,8 +762,7 @@ class MsSqlPlatform extends AbstractPlatform
             return $fromClause . ' WITH (tablockx)';
         } else if ($lockMode == \Doctrine\DBAL\LockMode::PESSIMISTIC_WRITE) {
             return $fromClause . ' WITH (tablockx)';
-        }
-		else {
+        } else {
             return $fromClause;
         }
     }
@@ -774,4 +774,20 @@ class MsSqlPlatform extends AbstractPlatform
     {
         return ' ';
     }
+
+    /**
+     * Quotes a string so that it can be safely used as a table or column name,
+     * even if it is a reserved word of the platform.
+     *
+     * NOTE: Just because you CAN use quoted identifiers doesn't mean
+     * you SHOULD use them.  In general, they end up causing way more
+     * problems than they solve.
+     *
+     * @param string $str           identifier name to be quoted
+     * @return string               quoted identifier string
+     */
+    public function quoteIdentifier($str)
+    {
+        return "[" . $str . "]";
+    }
 }