test/lib/testlibrary/jdk/testlibrary/Utils.java

@@ -1,7 +1,7 @@
 /*
- * Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2013, 2014, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
  * under the terms of the GNU General Public License version 2 only, as
  * published by the Free Software Foundation.

@@ -113,10 +113,44 @@
         Collections.addAll(opts, safeSplitString(JAVA_OPTIONS));
         return opts.toArray(new String[0]);
     }
 
     /**
+     * Returns the default JTReg arguments for a jvm running a test without
+     * options that matches regular expressions in {@code filters}.
+     * This is the combination of JTReg arguments test.vm.opts and test.java.opts.
+     * @param filters Regular expressions used to filter out options.
+     * @return An array of options, or an empty array if no options.
+     */
+    public static String[] getFilteredTestJavaOpts(String... filters) {
+        String options[] = getTestJavaOpts();
+
+        if (filters.length == 0) {
+            return options;
+        }
+
+        List<String> filteredOptions = new ArrayList<>(options.length);
+        Pattern patterns[] = new Pattern[filters.length];
+        for (int i = 0; i < filters.length; i++) {
+            patterns[i] = Pattern.compile(filters[i]);
+        }
+
+        for (String option : options) {
+            boolean matched = false;
+            for (int i = 0; i < patterns.length && !matched; i++) {
+                Matcher matcher = patterns[i].matcher(option);
+                matched = matcher.find();
+            }
+            if (!matched) {
+                filteredOptions.add(option);
+            }
+        }
+
+        return filteredOptions.toArray(new String[filteredOptions.size()]);
+    }
+
+    /**
      * Combines given arguments with default JTReg arguments for a jvm running a test.
      * This is the combination of JTReg arguments test.vm.opts and test.java.opts
      * @return The combination of JTReg test java options and user args.
      */
     public static String[] addTestJavaOpts(String... userArgs) {