1 /*
2 * Copyright (c) 2002, 2003, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation. Oracle designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Oracle in the LICENSE file that accompanied this code.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
23 * questions.
24 */
25
26 package com.sun.jmx.snmp.defaults;
27
28
29 // java import
30 //
31 import java.io.File;
32 import java.io.BufferedReader;
33 import java.io.InputStream;
34 import java.io.InputStreamReader;
35 import java.util.StringTokenizer;
36
37 /**
38 * This class represents a set of default directories used by Java DMK.
39 *
40 * <p><b>This API is a Sun Microsystems internal API and is subject
41 * to change without notice.</b></p>
42 * @since 1.5
43 */
44 public class DefaultPaths {
45 private static final String INSTALL_PATH_RESOURCE_NAME = "com/sun/jdmk/defaults/install.path";
46 // private constructor defined to "hide" the default public constructor
47 private DefaultPaths() {
48
49 }
50
51 // PUBLIC STATIC METHODS
52 //----------------------
53
54 /**
55 * Returns the installation directory for Java DMK.
56 *
57 * The default value of the installation directory is:
58 * <CODE><base_dir> + File.separator + SUNWjdmk + File.separator + jdmk5.0 </CODE>
59 *
60 * @return Java DMK installation directory.
61 */
62 public static String getInstallDir() {
63 if (installDir == null)
64 return useRessourceFile();
65 else
66 return installDir;
67 }
68
69 /**
70 * Returns the installation directory for Java DMK concatenated with dirname.
71 *
72 * The default value of the installation directory is:
73 * <CODE><base_dir> + File.separator + SUNWjdmk + File.separator + jdmk5.0 </CODE>
74 *
75 * @param dirname The directory to be appended.
76 *
77 * @return Java DMK installation directory + <CODE>File.separator</CODE> + <CODE>dirname</CODE>.
78 */
79 public static String getInstallDir(String dirname) {
80 if (installDir == null) {
81 if (dirname == null) {
82 return getInstallDir();
83 } else {
84 return getInstallDir() + File.separator + dirname;
85 }
86 } else {
87 if (dirname == null) {
88 return installDir;
89 } else {
90 return installDir + File.separator + dirname;
91 }
92 }
93 }
94
95 /**
96 * Sets the installation directory for Java DMK.
97 *
98 * @param dirname The directory where Java DMK resides.
99 */
100 public static void setInstallDir(String dirname) {
101 installDir = dirname;
102 }
103
104 /**
105 * Returns the <CODE>etc</CODE> directory for Java DMK.
106 * <P>
107 * The default value of the <CODE>etc</CODE> directory is:
108 * <UL>
109 * <LI><CODE>DefaultPaths.getInstallDir("etc")</CODE>.
110 * </UL>
111 *
112 * @return Java DMK <CODE>etc</CODE> directory.
113 */
114 public static String getEtcDir() {
115 if (etcDir == null)
116 return getInstallDir("etc");
117 else
118 return etcDir;
119 }
120
121 /**
122 * Returns the <CODE>etc</CODE> directory for Java DMK concatenated with dirname.
123 * <P>
124 * The default value of the <CODE>etc</CODE> directory is:
125 * <UL>
126 * <LI><CODE>DefaultPaths.getInstallDir("etc")</CODE>.
127 * </UL>
128 *
129 * @param dirname The directory to be appended.
130 *
131 * @return Java DMK <CODE>etc</CODE> directory + <CODE>File.separator</CODE> + <CODE>dirname</CODE>.
132 */
133 public static String getEtcDir(String dirname) {
134 if (etcDir == null) {
135 if (dirname == null) {
136 return getEtcDir();
137 } else {
138 return getEtcDir() + File.separator + dirname;
139 }
140 } else {
141 if (dirname == null) {
142 return etcDir;
143 } else {
144 return etcDir + File.separator + dirname;
145 }
146 }
147 }
148
149 /**
150 * Sets the <CODE>etc</CODE> directory for Java DMK.
151 *
152 * @param dirname The <CODE>etc</CODE> directory for Java DMK.
153 */
154 public static void setEtcDir(String dirname) {
155 etcDir = dirname;
156 }
157
158 /**
159 * Returns the <CODE>tmp</CODE> directory for the product.
160 * <P>
161 * The default value of the <CODE>tmp</CODE> directory is:
162 * <UL>
163 * <LI><CODE>DefaultPaths.getInstallDir("tmp")</CODE>.
164 * </UL>
165 *
166 * @return Java DMK <CODE>tmp</CODE> directory.
167 */
168 public static String getTmpDir() {
169 if (tmpDir == null)
170 return getInstallDir("tmp");
171 else
172 return tmpDir;
173 }
174
175 /**
176 * Returns the <CODE>tmp</CODE> directory for Java DMK concatenated with dirname.
177 * <P>
178 * The default value of the <CODE>tmp</CODE> directory is:
179 * <UL>
180 * <LI><CODE>DefaultPaths.getInstallDir("tmp")</CODE>.
181 * </UL>
182 *
183 * @param dirname The directory to be appended.
184 *
185 * @return Java DMK <CODE>tmp</CODE> directory + <CODE>File.separator</CODE> + <CODE>dirname</CODE>.
186 */
187 public static String getTmpDir(String dirname) {
188 if (tmpDir == null) {
189 if (dirname == null) {
190 return getTmpDir();
191 } else {
192 return getTmpDir() + File.separator + dirname;
193 }
194 } else {
195 if (dirname == null) {
196 return tmpDir;
197 } else {
198 return tmpDir + File.separator + dirname;
199 }
200 }
201 }
202
203 /**
204 * Sets the <CODE>tmp</CODE> directory for the product
205 *
206 * @param dirname The <CODE>tmp</CODE> directory for Java DMK.
207 */
208 public static void setTmpDir(String dirname) {
209 tmpDir = dirname;
210 }
211
212
213 // PRIVATE STATIC METHODS
214 //-----------------------
215
216 private static String useRessourceFile() {
217 InputStream in = null;
218 BufferedReader r = null;
219 try {
220 in =
221 DefaultPaths.class.getClassLoader().getResourceAsStream(INSTALL_PATH_RESOURCE_NAME);
222 if(in == null) return null;
223 r = new BufferedReader(new InputStreamReader(in));
224 installDir = r.readLine();
225 }catch(Exception e) {
226 }
227 finally {
228 try {
229 if(in != null) in.close();
230 if(r != null) r.close();
231 }catch(Exception e) {}
232 }
233 return installDir;
234 }
235
236 // PRIVATE VARIABLES
237 //------------------
238
239 /**
240 * Directories used by Java DMK.
241 */
242 private static String etcDir;
243 private static String tmpDir;
244 private static String installDir;
245 }