1/*
2 * Copyright 2009 Mike Cumings
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *   http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17package com.kenai.jbosh;
18
19/**
20 * Data type representing the getValue of the {@code accept} attribute of the
21 * {@code bosh} element.
22 */
23final class AttrAccept extends AbstractAttr<String> {
24
25    /**
26     * Array of the accepted encodings.
27     */
28    private final String[] encodings;
29
30    /**
31     * Creates a new attribute object.
32     *
33     * @param val attribute getValue
34     * @throws BOSHException on parse or validation failure
35     */
36    private AttrAccept(final String val) {
37        super(val);
38        encodings = val.split("[\\s,]+");
39    }
40
41    /**
42     * Creates a new attribute instance from the provided String.
43     *
44     * @param str string representation of the attribute
45     * @return attribute instance or {@code null} if provided string is
46     *  {@code null}
47     * @throws BOSHException on parse or validation failure
48     */
49    static AttrAccept createFromString(final String str)
50    throws BOSHException {
51        if (str == null) {
52            return null;
53        } else {
54            return new AttrAccept(str);
55        }
56    }
57
58    /**
59     * Determines whether or not the specified encoding is supported.
60     *
61     * @param name encoding name
62     * @result {@code true} if the encoding is accepted, {@code false}
63     *  otherwise
64     */
65    boolean isAccepted(final String name) {
66        for (String str : encodings) {
67            if (str.equalsIgnoreCase(name)) {
68                return true;
69            }
70        }
71        return false;
72    }
73
74}
75