Adding upstream version 4:7.4.7.upstream/4%7.4.7upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 179 insertions, 0 deletions

diff --git a/xmerge/source/xmerge/java/org/openoffice/xmerge/merger/diff/ObjectArrayIterator.java b/xmerge/source/xmerge/java/org/openoffice/xmerge/merger/diff/ObjectArrayIterator.java
new file mode 100644
index 000000000..ecfe89786
--- /dev/null
+++ b/xmerge/source/xmerge/java/org/openoffice/xmerge/merger/diff/ObjectArrayIterator.java
@@ -0,0 +1,179 @@
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   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 .
+ */
+
+package org.openoffice.xmerge.merger.diff;
+
+import org.openoffice.xmerge.merger.Iterator;
+
+/**
+ * This is an implementation of the {@code Iterator} interface.
+ *
+ * <p>It is based upon a simple {@code Object} array.</p>
+ *
+ * <p>Note: this class is not thread safe for performance reasons.</p>
+ */
+public final class ObjectArrayIterator implements Iterator {
+
+    /** The {@code Object} array. */
+    private Object [] objArray;
+    private int currentPosition;
+
+    /**
+     * Standard constructor.
+     *
+     * @param  objArray  The {@code Object} array.
+     */
+    public ObjectArrayIterator(Object [] objArray) {
+        if (objArray != null) {
+            this.objArray = new Object[objArray.length];
+            System.arraycopy(objArray, 0, this.objArray, 0, objArray.length);
+            currentPosition = 0;
+        } else {
+            this.objArray = new Object[0];
+        }
+    }
+
+    public Object next() {
+        if (currentPosition < objArray.length - 1) {
+            currentPosition++;
+            return currentElement();
+        } else {
+            return null;
+        }
+    }
+
+    public Object previous() {
+        if (currentPosition > 0) {
+            currentPosition--;
+            return currentElement();
+        } else {
+            return null;
+        }
+    }
+
+    public Object start() {
+        currentPosition = 0;
+        return currentElement();
+    }
+
+    public Object end() {
+        if (objArray.length > 0) {
+            currentPosition = objArray.length - 1;
+        }
+        return currentElement();
+    }
+
+    public Object currentElement() {
+        if (objArray.length > 0) {
+            return objArray[currentPosition];
+        } else {
+            return null;
+        }
+    }
+
+    /**
+     * Replace current {@code Object}.
+     *
+     * @param  object  {@code Object} to replace.
+     */
+    public void replace(Object object) {
+        objArray[currentPosition] = object;
+    }
+
+    /**
+     * Insert {@code Object} after current {@code Object}.
+     *
+     * @param  object  {@code Object} to insert.
+     */
+    public void insert(Object object) {
+        Object [] objArray2 = new Object[objArray.length+1];
+
+        // copy the array content up before the currentposition
+        if (currentPosition > 0) {
+            System.arraycopy(objArray, 0, objArray2, 0, currentPosition);
+        }
+
+        objArray2[currentPosition] = object;
+
+        // copy the array content up after the currentposition
+        System.arraycopy(objArray, currentPosition, objArray2,
+                   currentPosition + 1, objArray.length - currentPosition);
+
+        objArray = objArray2;
+        currentPosition++;
+    }
+
+    /**
+     * Append {@code Object} after current {@code Object}.
+     *
+     * @param  object  {@code Object} to append.
+     */
+    public void append(Object object) {
+        Object [] objArray2 = new Object[objArray.length + 1];
+
+        int newPosition = currentPosition + 1;
+
+        // copy the array content up to the currentposition
+        System.arraycopy(objArray, 0, objArray2, 0, newPosition);
+
+        objArray2[newPosition] = object;
+
+        // copy the array content up after the currentposition
+        if (currentPosition < objArray.length - 1) {
+            System.arraycopy(objArray, newPosition, objArray2,
+                   newPosition + 1, objArray.length - newPosition);
+        }
+
+        objArray = objArray2;
+    }
+
+    /**
+     * Remove current {@code Object}.
+     */
+    public void remove() {
+        Object [] objArray2 = new Object[objArray.length - 1];
+
+        // copy the array content up before the currentposition
+        if (currentPosition > 0) {
+            System.arraycopy(objArray, 0, objArray2, 0, currentPosition);
+        }
+
+        // copy the array content up after the currentposition
+        if (currentPosition < objArray.length - 1) {
+            System.arraycopy(objArray, currentPosition + 1, objArray2,
+                   currentPosition, objArray.length - currentPosition - 1);
+        }
+
+        objArray = objArray2;
+
+        if (currentPosition == objArray.length)
+            currentPosition--;
+    }
+
+    public int elementCount() {
+        return objArray.length;
+    }
+
+    public boolean equivalent(Object obj1, Object obj2) {
+        return obj1.equals(obj2);
+    }
+
+    public void refresh() {
+        // do nothing
+    }
+}
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