1 files changed, 85 insertions, 0 deletions
diff --git a/framework/src/ant/apache-ant-1.9.6/src/main/org/apache/tools/ant/util/regexp/RegexpFactory.java b/framework/src/ant/apache-ant-1.9.6/src/main/org/apache/tools/ant/util/regexp/RegexpFactory.java
new file mode 100644
index 00000000..7077a216
--- /dev/null
+++ b/framework/src/ant/apache-ant-1.9.6/src/main/org/apache/tools/ant/util/regexp/RegexpFactory.java
@@ -0,0 +1,85 @@
+/*
+ *  Licensed to the Apache Software Foundation (ASF) under one or more
+ *  contributor license agreements.  See the NOTICE file distributed with
+ *  this work for additional information regarding copyright ownership.
+ *  The ASF licenses this file to You under the Apache License, Version 2.0
+ *  (the "License"); you may not use this file except in compliance with
+ *  the License.  You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ *
+ */
+package org.apache.tools.ant.util.regexp;
+
+import org.apache.tools.ant.BuildException;
+import org.apache.tools.ant.MagicNames;
+import org.apache.tools.ant.Project;
+import org.apache.tools.ant.util.ClasspathUtils;
+
+/***
+ * Regular expression factory, which will create Regexp objects.  The
+ * actual implementation class depends on the System or Ant Property:
+ * <code>ant.regexp.regexpimpl</code>.
+ *
+ */
+public class RegexpFactory extends RegexpMatcherFactory {
+
+    /** Constructor for RegexpFactory */
+    public RegexpFactory() {
+    }
+
+    /***
+     * Create a new regular expression matcher instance.
+     * @return the matcher instance
+     * @throws BuildException on error
+     */
+    public Regexp newRegexp() throws BuildException {
+        return newRegexp(null);
+    }
+
+    /***
+     * Create a new regular expression matcher instance.
+     *
+     * @param p Project whose ant.regexp.regexpimpl property will be used.
+     * @return the matcher instance
+     * @throws BuildException on error
+     */
+    public Regexp newRegexp(Project p) throws BuildException {
+        String systemDefault = null;
+        if (p == null) {
+            systemDefault = System.getProperty(MagicNames.REGEXP_IMPL);
+        } else {
+            systemDefault = p.getProperty(MagicNames.REGEXP_IMPL);
+        }
+
+        if (systemDefault != null) {
+            return createRegexpInstance(systemDefault);
+            // TODO     should we silently catch possible exceptions and try to
+            //         load a different implementation?
+        }
+
+        return new Jdk14RegexpRegexp();
+    }
+
+    /**
+     * Wrapper over RegexpMatcherFactory.createInstance that ensures that
+     * we are dealing with a Regexp implementation.
+     * @param classname the name of the class to use.
+     * @return the instance.
+     * @throws BuildException if there is a problem.
+     * @since 1.3
+     *
+     * @see RegexpMatcherFactory#createInstance(String)
+     */
+    protected Regexp createRegexpInstance(String classname) throws BuildException {
+        return (Regexp) ClasspathUtils.newInstance(classname, RegexpFactory.class.getClassLoader(),
+                Regexp.class);
+    }
+
+}