1 /*
2  * Copyright (c) 2015, 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 package jdk.test.failurehandler;
25 
26 import java.io.IOException;
27 import java.io.InputStream;
28 import java.io.OutputStream;
29 import java.io.Reader;
30 import java.io.Writer;
31 import java.util.Properties;
32 
33 public final class Utils {
34     private static final int BUFFER_LENGTH = 1024;
35 
prependPrefix(String prefix, String name)36     public static String prependPrefix(String prefix, String name) {
37         return  (prefix == null || prefix.isEmpty())
38                 ? name
39                 : (name == null || name.isEmpty())
40                   ? prefix
41                   : String.format("%s.%s", prefix, name);
42     }
43 
copyStream(InputStream in, OutputStream out)44     public static void copyStream(InputStream in, OutputStream out)
45             throws IOException {
46         int n;
47         byte[] buffer = new byte[BUFFER_LENGTH];
48         while ((n = in.read(buffer)) != -1) {
49             out.write(buffer, 0, n);
50         }
51         out.flush();
52     }
53 
copyStream(Reader in, Writer out)54     public static void copyStream(Reader in, Writer out)
55             throws IOException {
56         int n;
57         char[] buffer = new char[BUFFER_LENGTH];
58         while ((n = in.read(buffer)) != -1) {
59             out.write(buffer, 0, n);
60         }
61         out.flush();
62     }
63 
getProperties(String name)64     public static Properties getProperties(String name) {
65         Properties properties = new Properties();
66         String resourceName = String.format(
67                 "/%s.%s", name.toLowerCase(), "properties");
68         InputStream stream = Utils.class.getResourceAsStream(resourceName);
69         if (stream == null) {
70             throw new IllegalStateException(String.format(
71                     "resource '%s' doesn't exist%n", resourceName));
72         }
73         try {
74             try {
75                 properties.load(stream);
76             } finally {
77                 stream.close();
78             }
79         } catch (IOException e) {
80             throw new IllegalStateException(String.format(
81                     "can't read resource '%s' : %s%n",
82                     resourceName, e.getMessage()), e);
83         }
84         return properties;
85     }
86 
Utils()87     private Utils() { }
88 }
89