1 files changed, 103 insertions, 0 deletions
diff --git a/src/org/jivesoftware/smack/filter/OrFilter.java b/src/org/jivesoftware/smack/filter/OrFilter.java
new file mode 100644
index 0000000..4c34fd0
--- /dev/null
+++ b/src/org/jivesoftware/smack/filter/OrFilter.java
@@ -0,0 +1,103 @@
+/**
+ * $RCSfile$
+ * $Revision$
+ * $Date$
+ *
+ * Copyright 2003-2007 Jive Software.
+ *
+ * All rights reserved. Licensed 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.jivesoftware.smack.filter;
+
+import org.jivesoftware.smack.packet.Packet;
+
+/**
+ * Implements the logical OR operation over two or more packet filters. In
+ * other words, packets pass this filter if they pass <b>any</b> of the filters.
+ *
+ * @author Matt Tucker
+ */
+public class OrFilter implements PacketFilter {
+
+    /**
+     * The current number of elements in the filter.
+     */
+    private int size;
+
+    /**
+     * The list of filters.
+     */
+    private PacketFilter [] filters;
+
+    /**
+     * Creates an empty OR filter. Filters should be added using the
+     * {@link #addFilter(PacketFilter)} method.
+     */
+    public OrFilter() {
+        size = 0;
+        filters = new PacketFilter[3];
+    }
+
+    /**
+     * Creates an OR filter using the two specified filters.
+     *
+     * @param filter1 the first packet filter.
+     * @param filter2 the second packet filter.
+     */
+    public OrFilter(PacketFilter filter1, PacketFilter filter2) {
+        if (filter1 == null || filter2 == null) {
+            throw new IllegalArgumentException("Parameters cannot be null.");
+        }
+        size = 2;
+        filters = new PacketFilter[2];
+        filters[0] = filter1;
+        filters[1] = filter2;
+    }
+
+    /**
+     * Adds a filter to the filter list for the OR operation. A packet
+     * will pass the filter if any filter in the list accepts it.
+     *
+     * @param filter a filter to add to the filter list.
+     */
+    public void addFilter(PacketFilter filter) {
+        if (filter == null) {
+            throw new IllegalArgumentException("Parameter cannot be null.");
+        }
+        // If there is no more room left in the filters array, expand it.
+        if (size == filters.length) {
+            PacketFilter [] newFilters = new PacketFilter[filters.length+2];
+            for (int i=0; i<filters.length; i++) {
+                newFilters[i] = filters[i];
+            }
+            filters = newFilters;
+        }
+        // Add the new filter to the array.
+        filters[size] = filter;
+        size++;
+    }
+
+    public boolean accept(Packet packet) {
+        for (int i=0; i<size; i++) {
+            if (filters[i].accept(packet)) {
+                return true;
+            }
+        }
+        return false;
+    }
+
+    public String toString() {
+        return filters.toString();
+    }
+}
+\ No newline at end of file