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