com.ibm.icu.impl.ICUConfig Maven / Gradle / Ivy
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// © 2016 and later: Unicode, Inc. and others.
// License & terms of use: http://www.unicode.org/copyright.html
/*
*******************************************************************************
* Copyright (C) 2008-2015, International Business Machines Corporation and
* others. All Rights Reserved.
*******************************************************************************
*/
package com.ibm.icu.impl;
import java.io.IOException;
import java.io.InputStream;
import java.security.AccessControlException;
import java.security.AccessController;
import java.security.PrivilegedAction;
import java.util.MissingResourceException;
import java.util.Properties;
/**
* ICUConfig is a class used for accessing ICU4J runtime configuration.
*/
public class ICUConfig {
public static final String CONFIG_PROPS_FILE = "/com/ibm/icu/ICUConfig.properties";
private static final Properties CONFIG_PROPS;
static {
CONFIG_PROPS = new Properties();
try {
InputStream is = ICUData.getStream(CONFIG_PROPS_FILE);
if (is != null) {
try {
CONFIG_PROPS.load(is);
} finally {
is.close();
}
}
} catch (MissingResourceException mre) {
// If it does not exist, ignore.
} catch (IOException ioe) {
// Any IO errors, ignore
}
}
/**
* Get ICU configuration property value for the given name.
* @param name The configuration property name
* @return The configuration property value, or null if it does not exist.
*/
public static String get(String name) {
return get(name, null);
}
/**
* Get ICU configuration property value for the given name.
* @param name The configuration property name
* @param def The default value
* @return The configuration property value. If the property does not
* exist, def is returned.
*/
public static String get(String name, String def) {
String val = null;
final String fname = name;
if (System.getSecurityManager() != null) {
try {
val = AccessController.doPrivileged(new PrivilegedAction() {
@Override
public String run() {
return System.getProperty(fname);
}
});
} catch (AccessControlException e) {
// ignore
// TODO log this message
}
} else {
val = System.getProperty(name);
}
if (val == null) {
val = CONFIG_PROPS.getProperty(name, def);
}
return val;
}
}