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 */
23package common;
24
25import java.io.BufferedReader;
26import java.io.IOException;
27import java.io.StringReader;
28import java.util.ArrayList;
29import java.util.LinkedList;
30import java.util.List;
31import java.util.StringTokenizer;
32import jdk.test.lib.process.OutputAnalyzer;
33import jdk.test.lib.process.ProcessTools;
34
35/**
36 * This class starts a process specified by the passed command line waits till
37 * the process completes and returns the process exit code and stdout and stderr
38 * output as ToolResults
39 */
40class ToolRunner {
41
42    private final List<String> cmdArgs = new LinkedList<>();
43
44    ToolRunner(String cmdLine) {
45        StringTokenizer st = new StringTokenizer(cmdLine);
46        while (st.hasMoreTokens()) {
47            cmdArgs.add(st.nextToken());
48        }
49    }
50
51    /**
52     * Starts the process, waits for the process completion and returns the
53     * results
54     *
55     * @return process results
56     * @throws Exception if anything goes wrong
57     */
58    ToolResults runToCompletion() throws Exception {
59
60        ProcessBuilder pb = new ProcessBuilder(cmdArgs);
61        OutputAnalyzer oa = ProcessTools.executeProcess(pb);
62
63        return new ToolResults(oa.getExitValue(),
64                stringToList(oa.getStdout()),
65                stringToList(oa.getStderr()));
66
67    }
68
69    private static List<String> stringToList(String s) throws IOException {
70        BufferedReader reader = new BufferedReader(new StringReader(s));
71        List<String> strings = new ArrayList<>();
72        for (String line = reader.readLine(); line != null; line = reader.readLine()) {
73            strings.add(line);
74        }
75        reader.close();
76        return strings;
77    }
78}
79