- /*
- * Copyright 2001-2002,2004 The Apache Software Foundation
- *
- * 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.apache.tools.zip;
-
- /**
- * Utility class that represents a four byte integer with conversion
- * rules for the big endian byte order of ZIP files.
- *
- * @version $Revision: 1.6.2.4 $
- */
- public final class ZipLong implements Cloneable {
-
- private long value;
-
- /**
- * Create instance from a number.
- *
- * @since 1.1
- */
- public ZipLong(long value) {
- this.value = value;
- }
-
- /**
- * Create instance from bytes.
- *
- * @since 1.1
- */
- public ZipLong (byte[] bytes) {
- this(bytes, 0);
- }
-
- /**
- * Create instance from the four bytes starting at offset.
- *
- * @since 1.1
- */
- public ZipLong (byte[] bytes, int offset) {
- value = (bytes[offset + 3] << 24) & 0xFF000000L;
- value += (bytes[offset + 2] << 16) & 0xFF0000;
- value += (bytes[offset + 1] << 8) & 0xFF00;
- value += (bytes[offset] & 0xFF);
- }
-
- /**
- * Get value as two bytes in big endian byte order.
- *
- * @since 1.1
- */
- public byte[] getBytes() {
- byte[] result = new byte[4];
- result[0] = (byte) ((value & 0xFF));
- result[1] = (byte) ((value & 0xFF00) >> 8);
- result[2] = (byte) ((value & 0xFF0000) >> 16);
- result[3] = (byte) ((value & 0xFF000000l) >> 24);
- return result;
- }
-
- /**
- * Get value as Java int.
- *
- * @since 1.1
- */
- public long getValue() {
- return value;
- }
-
- /**
- * Override to make two instances with same value equal.
- *
- * @since 1.1
- */
- public boolean equals(Object o) {
- if (o == null || !(o instanceof ZipLong)) {
- return false;
- }
- return value == ((ZipLong) o).getValue();
- }
-
- /**
- * Override to make two instances with same value equal.
- *
- * @since 1.1
- */
- public int hashCode() {
- return (int) value;
- }
- }