1 /*
   2  * Copyright (c) 2010, 2013, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  */
  23 
  24 /**
  25  * NASHORN-208
  26  *
  27  * @test
  28  * @run
  29  */
  30 
  31 var inspect = function(x) { return x; }
  32 
  33 var formatRegExp = /%[sdj%]/g;
  34 
  35 var format = function(f) {
  36   if (typeof f !== 'string') {
  37     var objects = [];
  38     for (var i = 0; i < arguments.length; i++) {
  39       objects.push(inspect(arguments[i]));
  40     }
  41     return objects.join(' ');
  42   }
  43 
  44   var i = 1;
  45   var args = arguments;
  46   var len = args.length;
  47   var str = String(f).replace(formatRegExp, function(x) {
  48     if (i >= len) return x;
  49     switch (x) {
  50       case '%s': return String(args[i++]);
  51       case '%d': return Number(args[i++]);
  52       case '%j': return JSON.stringify(args[i++]);
  53       case '%%': return '%';
  54       default:
  55         return x;
  56     }
  57   });
  58   for (var x = args[i]; i < len; x = args[++i]) {
  59     if (x === null || typeof x !== 'object') {
  60       str += ' ' + x;
  61     } else {
  62       str += ' ' + inspect(x);
  63     }
  64   }
  65   return str;
  66 };
  67 
  68 var s = format('%s %s', 'foo', 'bar', 'hop');
  69 print(s);
  70