escape any sequence of double backslash

lib/Doctrine/DBAL/SQLParserUtils.php

@@ -32,9 +32,9 @@ class SQLParserUtils
     const NAMED_TOKEN      = '(?<!:):[a-zA-Z_][a-zA-Z0-9_]*';
 
     // Quote characters within string literals can be preceded by a backslash.
-    const ESCAPED_SINGLE_QUOTED_TEXT = "'(?:[^'\\\\]|(\\\\)+|\\\\'?|'')*'";
-    const ESCAPED_DOUBLE_QUOTED_TEXT = '"(?:[^"\\\\]|(\\\\)+|\\\\"?)*"';
-    const ESCAPED_BACKTICK_QUOTED_TEXT = '`(?:[^`\\\\]|(\\\\)+|\\\\`?)*`';
+    const ESCAPED_SINGLE_QUOTED_TEXT = "'(?:(?:\\\\\\\\)*|[^'\\\\]|\\\\'?|'')*'";
+    const ESCAPED_DOUBLE_QUOTED_TEXT = '"(?:(?:\\\\\\\\)*|[^"\\\\]|\\\\"?)*"';
+    const ESCAPED_BACKTICK_QUOTED_TEXT = '`(?:(?:\\\\\\\\)*|[^`\\\\]|\\\\`?)*`';
     const ESCAPED_BRACKET_QUOTED_TEXT = '(?<!\bARRAY)\[(?:[^\]])*\]';
 
     /**

tests/Doctrine/Tests/DBAL/SQLParserUtilsTest.php

@@ -67,7 +67,11 @@ OR bar=:a_param3
 SQLDATA
                 , false, array(74 => 'a_param1', 91 => 'a_param2', 190 => 'a_param3')
             ),
-            array('SELECT data.age AS age, data.id AS id, data.name AS name, data.id AS id FROM test_data data WHERE (data.description LIKE :condition_0 ESCAPE \'\\\\\') AND (data.description LIKE :condition_1 ESCAPE \'\\\\\') ORDER BY id ASC', false, array(121 => 'condition_0', 174 => 'condition_1')),
+            array("SELECT data.age AS age, data.id AS id, data.name AS name, data.id AS id FROM test_data data WHERE (data.description LIKE :condition_0 ESCAPE '\\\\') AND (data.description LIKE :condition_1 ESCAPE '\\\\') ORDER BY id ASC", false, array(121 => 'condition_0', 174 => 'condition_1')),
+            array('SELECT data.age AS age, data.id AS id, data.name AS name, data.id AS id FROM test_data data WHERE (data.description LIKE :condition_0 ESCAPE "\\\\") AND (data.description LIKE :condition_1 ESCAPE "\\\\") ORDER BY id ASC', false, array(121 => 'condition_0', 174 => 'condition_1')),
+            array('SELECT data.age AS age, data.id AS id, data.name AS name, data.id AS id FROM test_data data WHERE (data.description LIKE :condition_0 ESCAPE "\\\\") AND (data.description LIKE :condition_1 ESCAPE \'\\\\\') ORDER BY id ASC', false, array(121 => 'condition_0', 174 => 'condition_1')),
+            array('SELECT data.age AS age, data.id AS id, data.name AS name, data.id AS id FROM test_data data WHERE (data.description LIKE :condition_0 ESCAPE `\\\\`) AND (data.description LIKE :condition_1 ESCAPE `\\\\`) ORDER BY id ASC', false, array(121 => 'condition_0', 174 => 'condition_1')),
+            array('SELECT data.age AS age, data.id AS id, data.name AS name, data.id AS id FROM test_data data WHERE (data.description LIKE :condition_0 ESCAPE \'\\\\\') AND (data.description LIKE :condition_1 ESCAPE `\\\\`) ORDER BY id ASC', false, array(121 => 'condition_0', 174 => 'condition_1')),
             
         );
     }