1 files changed, 60 insertions, 0 deletions
diff --git a/framework/src/ant/apache-ant-1.9.6/src/main/org/apache/tools/ant/types/resources/comparators/FileSystem.java b/framework/src/ant/apache-ant-1.9.6/src/main/org/apache/tools/ant/types/resources/comparators/FileSystem.java
new file mode 100644
index 00000000..7eafeb94
--- /dev/null
+++ b/framework/src/ant/apache-ant-1.9.6/src/main/org/apache/tools/ant/types/resources/comparators/FileSystem.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.types.resources.comparators;
+
+import java.io.File;
+
+import org.apache.tools.ant.types.Resource;
+import org.apache.tools.ant.types.resources.FileProvider;
+import org.apache.tools.ant.util.FileUtils;
+
+/**
+ * Compares filesystem Resources.
+ * @since Ant 1.7
+ */
+public class FileSystem extends ResourceComparator {
+    private static final FileUtils FILE_UTILS = FileUtils.getFileUtils();
+
+    /**
+     * Compare two Resources.
+     * @param foo the first Resource.
+     * @param bar the second Resource.
+     * @return a negative integer, zero, or a positive integer as the first
+     *         argument is less than, equal to, or greater than the second.
+     * @throws ClassCastException if either resource is not an instance of FileResource.
+     */
+    protected int resourceCompare(Resource foo, Resource bar) {
+        FileProvider fooFP = foo.as(FileProvider.class);
+        if (fooFP == null) {
+            throw new ClassCastException(foo.getClass()
+                                         + " doesn't provide files");
+        }
+        File foofile = fooFP.getFile();
+        FileProvider barFP = bar.as(FileProvider.class);
+        if (barFP == null) {
+            throw new ClassCastException(bar.getClass()
+                                         + " doesn't provide files");
+        }
+        File barfile = barFP.getFile();
+        return foofile.equals(barfile) ? 0
+            : FILE_UTILS.isLeadingPath(foofile, barfile) ? -1
+            : FILE_UTILS.normalize(foofile.getAbsolutePath()).compareTo(
+                FILE_UTILS.normalize(barfile.getAbsolutePath()));
+    }
+
+}