NASHORN-208.js revision 2:da1e581c933b 
1/*
2 * Copyright (c) 2010, 2012, 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
31var inspect = function(x) { return x; }
32
33var formatRegExp = /%[sdj%]/g;
34
35var 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
68var s = format('%s %s', 'foo', 'bar', 'hop');
69print(s);
70
71