1 files changed, 149 insertions, 0 deletions
diff --git a/framework/src/ant/apache-ant-1.9.6/src/main/org/apache/tools/ant/types/resources/selectors/Compare.java b/framework/src/ant/apache-ant-1.9.6/src/main/org/apache/tools/ant/types/resources/selectors/Compare.java
new file mode 100644
index 00000000..f345c278
--- /dev/null
+++ b/framework/src/ant/apache-ant-1.9.6/src/main/org/apache/tools/ant/types/resources/selectors/Compare.java
@@ -0,0 +1,149 @@
+/*
+ *  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.selectors;
+
+import java.util.Stack;
+
+import org.apache.tools.ant.BuildException;
+import org.apache.tools.ant.Project;
+import org.apache.tools.ant.types.Comparison;
+import org.apache.tools.ant.types.DataType;
+import org.apache.tools.ant.types.Quantifier;
+import org.apache.tools.ant.types.Resource;
+import org.apache.tools.ant.types.ResourceCollection;
+import org.apache.tools.ant.types.resources.Union;
+import org.apache.tools.ant.types.resources.comparators.DelegatedResourceComparator;
+import org.apache.tools.ant.types.resources.comparators.ResourceComparator;
+
+/**
+ * ResourceSelector that compares against "control" Resource(s)
+ * using ResourceComparators.
+ * @since Ant 1.7
+ */
+public class Compare extends DataType implements ResourceSelector {
+
+    private static final String ONE_CONTROL_MESSAGE
+        = " the <control> element should be specified exactly once.";
+
+    private DelegatedResourceComparator comp = new DelegatedResourceComparator();
+    private Quantifier against = Quantifier.ALL;
+
+    private Comparison when = Comparison.EQUAL;
+
+    private Union control;
+
+    /**
+     * Add a ResourceComparator to this Compare selector.
+     * If multiple ResourceComparators are added, they will be processed in LIFO order.
+     * @param c the ResourceComparator to add.
+     */
+    public synchronized void add(ResourceComparator c) {
+        if (isReference()) {
+            throw noChildrenAllowed();
+        }
+        comp.add(c);
+        setChecked(false);
+    }
+
+    /**
+     * Set the quantifier to be used. Default "all".
+     * @param against the Quantifier EnumeratedAttribute to use.
+     */
+    public synchronized void setAgainst(Quantifier against) {
+        if (isReference()) {
+            throw tooManyAttributes();
+        }
+        this.against = against;
+    }
+
+    /**
+     * Set the comparison to be used. Default "equal".
+     * @param when the Comparison EnumeratedAttribute to use.
+     */
+    public synchronized void setWhen(Comparison when) {
+        if (isReference()) {
+            throw tooManyAttributes();
+        }
+        this.when = when;
+    }
+
+    /**
+     * Create the nested control element. These are the
+     * resources to compare against.
+     * @return ResourceCollection.
+     */
+    public synchronized ResourceCollection createControl() {
+        if (isReference()) {
+            throw noChildrenAllowed();
+        }
+        if (control != null) {
+            throw oneControl();
+        }
+        control = new Union();
+        setChecked(false);
+        return control;
+    }
+
+    //implement ResourceSelector; inherit doc
+    /** {@inheritDoc} */
+    public synchronized boolean isSelected(Resource r) {
+        if (isReference()) {
+            return ((ResourceSelector) getCheckedRef()).isSelected(r);
+        }
+        if (control == null) {
+            throw oneControl();
+        }
+        dieOnCircularReference();
+        int t = 0, f = 0;
+        for (Resource res : control) {
+            if (when.evaluate(comp.compare(r, res))) {
+                t++;
+            } else {
+                f++;
+            }
+        }
+        return against.evaluate(t, f);
+    }
+
+    /**
+     * Overrides the version from DataType
+     * to recurse on nested ResourceComparators.
+     * @param stk the stack of data types to use (recursively).
+     * @param p   the project to use to dereference the references.
+     * @throws BuildException on error.
+     */
+    protected synchronized void dieOnCircularReference(Stack<Object> stk, Project p)
+        throws BuildException {
+        if (isChecked()) {
+            return;
+        }
+        if (isReference()) {
+            super.dieOnCircularReference(stk, p);
+        } else {
+            if (control != null) {
+                DataType.pushAndInvokeCircularReferenceCheck(control, stk, p);
+            }
+            DataType.pushAndInvokeCircularReferenceCheck(comp, stk, p);
+            setChecked(true);
+        }
+    }
+
+    private BuildException oneControl() {
+        return new BuildException(super.toString() + ONE_CONTROL_MESSAGE);
+    }
+}