Line | Hits | Source |
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1 | /* | |
2 | ||
3 | Copyright 2004, Martian Software, Inc. | |
4 | ||
5 | Licensed under the Apache License, Version 2.0 (the "License"); | |
6 | you may not use this file except in compliance with the License. | |
7 | You may obtain a copy of the License at | |
8 | ||
9 | http://www.apache.org/licenses/LICENSE-2.0 | |
10 | ||
11 | Unless required by applicable law or agreed to in writing, software | |
12 | distributed under the License is distributed on an "AS IS" BASIS, | |
13 | WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | |
14 | See the License for the specific language governing permissions and | |
15 | limitations under the License. | |
16 | ||
17 | */ | |
18 | ||
19 | package com.martiansoftware.nailgun; | |
20 | ||
21 | /** | |
22 | * Provides a couple of utility methods that help in reading/writin | |
23 | * chunks of data in the Nailgun protocol. | |
24 | * | |
25 | * @author <a href="http://www.martiansoftware.com/contact.html">Marty Lamb</a> | |
26 | */ | |
27 | 0 | class LongUtils { |
28 | ||
29 | /** | |
30 | * Encodes the specified long in 4 consecutive bytes (big-endian) | |
31 | * in the specified array, beginning at the specified offset. | |
32 | * @param l the long to encode | |
33 | * @param b the array into which the long should be written | |
34 | * @param offset the offset into the array at which the writing | |
35 | * should begin | |
36 | */ | |
37 | public static void toArray(long l, byte[] b, int offset) { | |
38 | 3 | b[offset + 3] = (byte) (l % 256); |
39 | 3 | l >>>= 8; |
40 | 3 | b[offset + 2] = (byte) (l % 256); |
41 | 3 | l >>>= 8; |
42 | 3 | b[offset + 1] = (byte) (l % 256); |
43 | 3 | l >>>= 8; |
44 | 3 | b[0] = (byte) (l % 256); |
45 | 3 | } |
46 | ||
47 | /** | |
48 | * Reads a 4-byte big-endian long from the specified array, | |
49 | * beginnin at the specified offset. | |
50 | * @param b the array containing the encoded long | |
51 | * @param offset the offset into the array at which the encoded | |
52 | * long begins | |
53 | * @return the decoded long | |
54 | */ | |
55 | public static long fromArray(byte[] b, int offset) { | |
56 | 7 | return(((long) (b[offset] & 0xff) << 24) |
57 | + ((long) (b[offset + 1] & 0xff) << 16) | |
58 | + ((long) (b[offset + 2] & 0xff) << 8) | |
59 | + ((long) (b[offset + 3] & 0xff))); | |
60 | } | |
61 | } |
this report was generated by version 1.0.5 of jcoverage. |
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