Console.java revision 1378:54af83b4a714 
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.  Oracle designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Oracle in the LICENSE file that accompanied this code.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
23 * questions.
24 */
25
26package jdk.nashorn.tools.jjs;
27
28import java.io.File;
29import java.io.IOException;
30import java.io.InputStream;
31import java.io.PrintStream;
32import java.util.ArrayList;
33import java.util.Arrays;
34import java.util.Collections;
35import java.util.Iterator;
36import java.util.List;
37import jdk.internal.jline.console.ConsoleReader;
38import jdk.internal.jline.console.completer.Completer;
39import jdk.internal.jline.console.history.FileHistory;
40
41class Console implements AutoCloseable {
42    private final ConsoleReader in;
43    private final FileHistory history;
44
45    Console(final InputStream cmdin, final PrintStream cmdout, final File historyFile,
46            final Completer completer) throws IOException {
47        in = new ConsoleReader(cmdin, cmdout);
48        in.setExpandEvents(false);
49        in.setHandleUserInterrupt(true);
50        in.setBellEnabled(true);
51        in.setHistory(history = new FileHistory(historyFile));
52        in.addCompleter(completer);
53        Runtime.getRuntime().addShutdownHook(new Thread((Runnable)this::saveHistory));
54    }
55
56    String readLine(final String prompt) throws IOException {
57        return in.readLine(prompt);
58    }
59
60    @Override
61    public void close() {
62        saveHistory();
63    }
64
65    private void saveHistory() {
66        try {
67            getHistory().flush();
68        } catch (final IOException exp) {}
69    }
70
71    FileHistory getHistory() {
72        return (FileHistory) in.getHistory();
73    }
74}
75