1 files changed, 60 insertions, 0 deletions
diff --git a/framework/src/ant/apache-ant-1.9.6/src/main/org/apache/tools/ant/util/ChainedMapper.java b/framework/src/ant/apache-ant-1.9.6/src/main/org/apache/tools/ant/util/ChainedMapper.java
new file mode 100644
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--- /dev/null
+++ b/framework/src/ant/apache-ant-1.9.6/src/main/org/apache/tools/ant/util/ChainedMapper.java
@@ -0,0 +1,60 @@
+/*
+ *  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;
+
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.Iterator;
+import java.util.List;
+
+/**
+ * A <code>ContainerMapper</code> that chains the results of the first
+ * nested <code>FileNameMapper</code>s into sourcefiles for the second,
+ * the second to the third, and so on, returning the resulting mapped
+ * filenames from the last nested <code>FileNameMapper</code>.
+ */
+public class ChainedMapper extends ContainerMapper {
+
+    /** {@inheritDoc}. */
+    public String[] mapFileName(String sourceFileName) {
+        List inputs = new ArrayList();
+        List results = new ArrayList();
+        results.add(sourceFileName);
+        FileNameMapper mapper = null;
+
+        for (Iterator mIter = getMappers().iterator(); mIter.hasNext();) {
+            mapper = (FileNameMapper) (mIter.next());
+            if (mapper != null) {
+                inputs.clear();
+                inputs.addAll(results);
+                results.clear();
+
+                for (Iterator it = inputs.iterator(); it.hasNext();) {
+                    String[] mapped = mapper.mapFileName((String) (it.next()));
+                    if (mapped != null) {
+                        results.addAll(Arrays.asList(mapped));
+                    }
+                }
+            }
+        }
+        return (results.size() == 0) ? null
+            : (String[]) results.toArray(new String[results.size()]);
+    }
+}
+