osgi/runtime/org.argeo.osgi.boot/src/main/java/org/argeo/osgi/boot/OsgiBootUtils.java

   1 /*
   2  * Copyright (C) 2010 Mathieu Baudier <mbaudier@argeo.org>
   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
  17 package org.argeo.osgi.boot;
  18
  19 public class OsgiBootUtils {
  20
  21         public static void info(Object obj) {
  22                 System.out.println("# OSGiBOOT      # " + obj);
  23         }
  24
  25         public static void debug(Object obj) {
  26                         System.out.println("# OSGiBOOT DBG  # " + obj);
  27         }
  28
  29         public static void warn(Object obj) {
  30                 System.out.println("# OSGiBOOT WARN # " + obj);
  31                 // Because of a weird bug under Windows when starting it in a forked VM
  32                 // if (System.getProperty("os.name").contains("Windows"))
  33                 // System.out.println("# WARN " + obj);
  34                 // else
  35                 // System.err.println("# WARN " + obj);
  36         }
  37
  38         //FIXE: returns null when defaultValue is ""
  39         public static String getProperty(String name, String defaultValue) {
  40                 final String value;
  41                 if (defaultValue != null)
  42                         value = System.getProperty(name, defaultValue);
  43                 else
  44                         value = System.getProperty(name);
  45
  46                 if (value == null || value.equals(""))
  47                         return null;
  48                 else
  49                         return value;
  50         }
  51
  52         public static String getProperty(String name) {
  53                 return getProperty(name, null);
  54         }
  55
  56         public static String getPropertyCompat(String name, String oldName) {
  57                 return getPropertyCompat(name, oldName, null);
  58         }
  59
  60         public static String getPropertyCompat(String name, String oldName,
  61                         String defaultValue) {
  62                 String res = null;
  63
  64                 if (defaultValue != null) {
  65                         res = getProperty(name, defaultValue);
  66                         if (res.equals(defaultValue)) {
  67                                 res = getProperty(oldName, defaultValue);
  68                                 if (!res.equals(defaultValue))
  69                                         warnDeprecated(name, oldName);
  70                         }
  71                 } else {
  72                         res = getProperty(name, null);
  73                         if (res == null) {
  74                                 res = getProperty(oldName, null);
  75                                 if (res != null)
  76                                         warnDeprecated(name, oldName);
  77                         }
  78                 }
  79                 return res;
  80         }
  81
  82         public static void warnDeprecated(String name, String oldName) {
  83                 warn("Property '" + oldName
  84                                 + "' is deprecated and will be removed soon, use '" + name
  85                                 + "' instead.");
  86         }
  87
  88 }