1 /**
2 * Copyright (c) 2012-2017, s3auth.com
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: 1) Redistributions of source code must retain the above
8 * copyright notice, this list of conditions and the following
9 * disclaimer. 2) Redistributions in binary form must reproduce the above
10 * copyright notice, this list of conditions and the following
11 * disclaimer in the documentation and/or other materials provided
12 * with the distribution. 3) Neither the name of the s3auth.com nor
13 * the names of its contributors may be used to endorse or promote
14 * products derived from this software without specific prior written
15 * permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
18 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT
19 * NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
20 * FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
21 * THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
22 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
23 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
24 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
26 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
27 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
28 * OF THE POSSIBILITY OF SUCH DAMAGE.
29 */
30 package com.s3auth.hosts;
31
32 import com.jcabi.aspects.Immutable;
33 import com.jcabi.aspects.Loggable;
34 import lombok.EqualsAndHashCode;
35 import lombok.ToString;
36
37 /**
38 * Range of data.
39 *
40 * @author Yegor Bugayenko (yegor@tpc2.com)
41 * @version $Id: e33296d0a8b50c3bb0dba986ae870588a3b7ff09 $
42 * @since 0.0.1
43 */
44 @Immutable
45 public interface Range {
46
47 /**
48 * All inclusive range.
49 */
50 Range ENTIRE = new Range() {
51 @Override
52 public String toString() {
53 return "ENTIRE";
54 }
55 @Override
56 public long first() {
57 return 0;
58 }
59 @Override
60 public long last() {
61 return Long.MAX_VALUE;
62 }
63 };
64
65 /**
66 * First byte to fetch, inclusively.
67 * @return Number of byte
68 */
69 long first();
70
71 /**
72 * Last byte to fetch, inclusively.
73 * @return Number of byte
74 */
75 long last();
76
77 /**
78 * Simple implementation.
79 */
80 @Loggable(Loggable.DEBUG)
81 @ToString
82 @EqualsAndHashCode(of = { "frst", "lst" })
83 final class Simple implements Range {
84 /**
85 * First byte.
86 */
87 private final transient long frst;
88 /**
89 * Last byte.
90 */
91 private final transient long lst;
92 /**
93 * Public ctor.
94 * @param first First byte
95 * @param last Last byte
96 */
97 public Simple(final long first, final long last) {
98 this.frst = first;
99 this.lst = last;
100 }
101 @Override
102 public long first() {
103 return this.frst;
104 }
105 @Override
106 public long last() {
107 return this.lst;
108 }
109 }
110
111 }