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Java > Open Source Codes > com > jeantessier > commandline > MultipleValuesSwitch


1 /*
2  * Copyright (c) 2001-2005, Jean Tessier
3  * All rights reserved.
4  *
5  * Redistribution and use in source and binary forms, with or without
6  * modification, are permitted provided that the following conditions
7  * are met:
8  *
9  * * Redistributions of source code must retain the above copyright
10  * notice, this list of conditions and the following disclaimer.
11  *
12  * * Redistributions in binary form must reproduce the above copyright
13  * notice, this list of conditions and the following disclaimer in the
14  * documentation and/or other materials provided with the distribution.
15  *
16  * * Neither the name of Jean Tessier nor the names of his contributors
17  * may be used to endorse or promote products derived from this software
18  * without specific prior written permission.
19  *
20  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
21  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
22  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
23  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR
24  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
25  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
26  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
27  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
28  * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
29  * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
30  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
31  */

32
33 package com.jeantessier.commandline;
34
35 import java.util.*;
36
37 /**
38  * The switch must be followed by a value, but it can occur multiple times
39  * on the command-line. The values are accumulated in the same order as on
40  * the command-line and you retrieve them as a single <code>java.util.List</code>.
41  */

42 public class MultipleValuesSwitch extends CommandLineSwitchBase {
43     public MultipleValuesSwitch() {
44         this(new LinkedList(), false);
45     }
46
47     public MultipleValuesSwitch(String JavaDoc defaultValue) {
48         this(Collections.singletonList(defaultValue), false);
49     }
50
51     public MultipleValuesSwitch(String JavaDoc[] defaultValue) {
52         this(Arrays.asList(defaultValue), false);
53     }
54
55     public MultipleValuesSwitch(List defaultValue) {
56         this(defaultValue, false);
57     }
58
59     public MultipleValuesSwitch(boolean mandatory) {
60         this(new LinkedList(), mandatory);
61     }
62
63     public MultipleValuesSwitch(String JavaDoc defaultValue, boolean mandatory) {
64         this(Collections.singletonList(defaultValue), mandatory);
65     }
66
67     public MultipleValuesSwitch(String JavaDoc[] defaultValue, boolean mandatory) {
68         this(Arrays.asList(defaultValue), mandatory);
69     }
70
71     public MultipleValuesSwitch(List defaultValue, boolean mandatory) {
72         super(new LinkedList(defaultValue), mandatory);
73
74         this.value = new LinkedList();
75     }
76
77     public Object JavaDoc getValue() {
78         Object JavaDoc result = getDefaultValue();
79
80         if (!((List) value).isEmpty()) {
81             result = value;
82         }
83
84         return result;
85     }
86
87     public void setValue(Object JavaDoc value) {
88         ((List) this.value).add(value);
89         super.setValue(this.value);
90     }
91
92     public int parse(String JavaDoc name, String JavaDoc value) throws CommandLineException {
93         if (value == null) {
94             throw new CommandLineException("Missing mandatory value for switch \"" + name + "\"");
95         }
96
97         setValue(value);
98     
99         return 2;
100     }
101
102     public void accept(Visitor visitor) {
103         visitor.visitMultipleValuesSwitch(this);
104     }
105 }
106
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