1 files changed, 77 insertions, 0 deletions
diff --git a/java/com/ibm/icu/impl/ICUConfig.java b/java/com/ibm/icu/impl/ICUConfig.java
new file mode 100644
index 0000000..b875286
--- /dev/null
+++ b/java/com/ibm/icu/impl/ICUConfig.java
@@ -0,0 +1,77 @@
+/*
+ *******************************************************************************
+ * Copyright (C) 2008-2010, 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) {
+                CONFIG_PROPS.load(is);
+            }
+        } 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, <code>def</code> 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<String>() {
+                    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;
+    }
+}