01: /*
02: * Copyright (c) 1998-2008 Caucho Technology -- all rights reserved
03: *
04: * This file is part of Resin(R) Open Source
05: *
06: * Each copy or derived work must preserve the copyright notice and this
07: * notice unmodified.
08: *
09: * Resin Open Source is free software; you can redistribute it and/or modify
10: * it under the terms of the GNU General Public License as published by
11: * the Free Software Foundation; either version 2 of the License, or
12: * (at your option) any later version.
13: *
14: * Resin Open Source is distributed in the hope that it will be useful,
15: * but WITHOUT ANY WARRANTY; without even the implied warranty of
16: * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, or any warranty
17: * of NON-INFRINGEMENT. See the GNU General Public License for more
18: * details.
19: *
20: * You should have received a copy of the GNU General Public License
21: * along with Resin Open Source; if not, write to the
22: *
23: * Free Software Foundation, Inc.
24: * 59 Temple Place, Suite 330
25: * Boston, MA 02111-1307 USA
26: *
27: * @author Nam Nguyen
28: */
29:
30: package com.caucho.server.snmp.types;
31:
32: /*
33: * SNMP Integer (signed) type.
34: */
35: public class IntegerValue extends SnmpValue {
36: public static final IntegerValue ZERO = new IntegerValue(0);
37:
38: int _value;
39:
40: public IntegerValue(int value) {
41: _value = (int) value;
42: }
43:
44: public long getLong() {
45: return _value;
46: }
47:
48: @Override
49: public int getType() {
50: return SnmpValue.INTEGER;
51: }
52:
53: @Override
54: public void toAsn1(StringBuilder sb) {
55: int len = length();
56:
57: header(sb, len);
58: assert len < 5;
59:
60: int value = _value;
61:
62: for (int i = 0; i < len; i++) {
63: value = _value >> ((len - i - 1) * 8);
64:
65: sb.append((char) (value & 0xFF));
66: }
67: }
68:
69: private int length() {
70: int length = 1;
71: int value = _value;
72:
73: if (value == 0) {
74: } else {
75: while ((value = value / 256) != 0)
76: length++;
77: }
78:
79: return length;
80: }
81:
82: public boolean equals(Object obj) {
83: if (obj instanceof IntegerValue
84: && _value == ((IntegerValue) obj)._value)
85: return true;
86: else
87: return false;
88: }
89:
90: public String toString() {
91: return String.valueOf(_value);
92: }
93: }
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