added PMA_unQuote() to remove quotes from strings

ChangeLog

@@ -13,8 +13,9 @@ $Source$
       added variables to define (text) color for marked and hovered objects
       thanks to Juergen Wind - windkiel for hinting this bug (patch #1503529)
     * Documentation.html: updated style config option descriptions
-    * libraries/common.lib.php: added PMA_escapeJsString() to escape strings for
+    * libraries/common.lib.php:
-      JavaScript inside CDATA blocks
+      - added PMA_escapeJsString() to escape strings for JavaScript inside CDATA blocks
+      - added PMA_unQuote() to remove quotes from strings
     * libraries/footer.inc.php: correctly escape strings inside JavaScript
       (part of bug #1532721)
 

libraries/common.lib.php

@@ -723,6 +723,39 @@ if (!defined('PMA_MINIMUM_COMMON')) {
         return $name;
     } // end of the 'PMA_unescape_mysql_wildcards()' function
 
+    /**
+     * removes quotes (',",`) from a quoted string
+     *
+     * checks if the sting is quoted and removes this quotes
+     *
+     * @param   string  $quoted_string  string to remove quotes from
+     * @param   string  $quote          type of quote to remove
+     * @return  string  unqoted string
+     */
+    function PMA_unQuote($quoted_string, $quote = null)
+    {
+        $quotes = array();
+
+        if (null === $quote) {
+            $quotes[] = '`';
+            $quotes[] = '"';
+            $quotes[] = "'";
+        } else {
+            $quotes[] = $quote;
+        }
+
+        foreach ($quotes as $quote) {
+            if (substr($quoted_string, 0, 1) === $quote
+             && substr($quoted_string, 1, 1) !== $quote
+             && substr($quoted_string, -1, 1) === $quote
+             && substr($quoted_string, -2, 1) !== $quote ) {
+                 return substr($quoted_string, 1, -1);
+             }
+        }
+
+        return $quoted_string;
+    }
+
     /**
      * format sql strings
      *