1 /* 2 ******************************************************************************* 3 * Copyright (C) 2008-2010, International Business Machines Corporation and * 4 * others. All Rights Reserved. * 5 ******************************************************************************* 6 */ 7 package com.ibm.icu.impl; 8 9 import java.io.IOException; 10 import java.io.InputStream; 11 import java.security.AccessControlException; 12 import java.security.AccessController; 13 import java.security.PrivilegedAction; 14 import java.util.MissingResourceException; 15 import java.util.Properties; 16 17 /** 18 * ICUConfig is a class used for accessing ICU4J runtime configuration. 19 */ 20 public class ICUConfig { 21 public static final String CONFIG_PROPS_FILE = "/com/ibm/icu/ICUConfig.properties"; 22 private static final Properties CONFIG_PROPS; 23 24 static { 25 CONFIG_PROPS = new Properties(); 26 try { 27 InputStream is = ICUData.getStream(CONFIG_PROPS_FILE); 28 if (is != null) { 29 CONFIG_PROPS.load(is); 30 } 31 } catch (MissingResourceException mre) { 32 // If it does not exist, ignore. 33 } catch (IOException ioe) { 34 // Any IO errors, ignore 35 } 36 } 37 38 /** 39 * Get ICU configuration property value for the given name. 40 * @param name The configuration property name 41 * @return The configuration property value, or null if it does not exist. 42 */ 43 public static String get(String name) { 44 return get(name, null); 45 } 46 47 /** 48 * Get ICU configuration property value for the given name. 49 * @param name The configuration property name 50 * @param def The default value 51 * @return The configuration property value. If the property does not 52 * exist, <code>def</code> is returned. 53 */ 54 public static String get(String name, String def) { 55 String val = null; 56 final String fname = name; 57 if (System.getSecurityManager() != null) { 58 try { 59 val = AccessController.doPrivileged(new PrivilegedAction<String>() { 60 public String run() { 61 return System.getProperty(fname); 62 } 63 }); 64 } catch (AccessControlException e) { 65 // ignore 66 // TODO log this message 67 } 68 } else { 69 val = System.getProperty(name); 70 } 71 72 if (val == null) { 73 val = CONFIG_PROPS.getProperty(name, def); 74 } 75 return val; 76 } 77 } 78
