1 files changed, 115 insertions, 0 deletions
diff --git a/framework/src/ant/apache-ant-1.9.6/src/main/org/apache/tools/zip/UnparseableExtraFieldData.java b/framework/src/ant/apache-ant-1.9.6/src/main/org/apache/tools/zip/UnparseableExtraFieldData.java
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--- /dev/null
+++ b/framework/src/ant/apache-ant-1.9.6/src/main/org/apache/tools/zip/UnparseableExtraFieldData.java
@@ -0,0 +1,115 @@
+/*
+ * 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.zip;
+
+/**
+ * Wrapper for extra field data that doesn't conform to the recommended format of header-tag + size + data.
+ *
+ * <p>The header-id is artificial (and not listed as a known ID in
+ * {@link <a href="http://www.pkware.com/documents/casestudies/APPNOTE.TXT">
+ * APPNOTE.TXT</a>}).  Since it isn't used anywhere except to satisfy the
+ * ZipExtraField contract it shouldn't matter anyway.</p>
+ *
+ * @since Ant 1.8.1
+ */
+public final class UnparseableExtraFieldData
+    implements CentralDirectoryParsingZipExtraField {
+
+    private static final ZipShort HEADER_ID = new ZipShort(0xACC1);
+
+    private byte[] localFileData;
+    private byte[] centralDirectoryData;
+
+    /**
+     * The Header-ID.
+     *
+     * @return a completely arbitrary value that should be ignored.
+     */
+    public ZipShort getHeaderId() {
+        return HEADER_ID;
+    }
+
+    /**
+     * Length of the complete extra field in the local file data.
+     *
+     * @return The LocalFileDataLength value
+     */
+    public ZipShort getLocalFileDataLength() {
+        return new ZipShort(localFileData == null ? 0 : localFileData.length);
+    }
+
+    /**
+     * Length of the complete extra field in the central directory.
+     *
+     * @return The CentralDirectoryLength value
+     */
+    public ZipShort getCentralDirectoryLength() {
+        return centralDirectoryData == null
+            ? getLocalFileDataLength()
+            : new ZipShort(centralDirectoryData.length);
+    }
+
+    /**
+     * The actual data to put into local file data.
+     *
+     * @return The LocalFileDataData value
+     */
+    public byte[] getLocalFileDataData() {
+        return ZipUtil.copy(localFileData);
+    }
+
+    /**
+     * The actual data to put into central directory.
+     *
+     * @return The CentralDirectoryData value
+     */
+    public byte[] getCentralDirectoryData() {
+        return centralDirectoryData == null
+            ? getLocalFileDataData() : ZipUtil.copy(centralDirectoryData);
+    }
+
+    /**
+     * Populate data from this array as if it was in local file data.
+     *
+     * @param buffer the buffer to read data from
+     * @param offset offset into buffer to read data
+     * @param length the length of data
+     */
+    public void parseFromLocalFileData(byte[] buffer, int offset, int length) {
+        localFileData = new byte[length];
+        System.arraycopy(buffer, offset, localFileData, 0, length);
+    }
+
+    /**
+     * Populate data from this array as if it was in central directory data.
+     *
+     * @param buffer the buffer to read data from
+     * @param offset offset into buffer to read data
+     * @param length the length of data
+     */
+    public void parseFromCentralDirectoryData(byte[] buffer, int offset,
+                                              int length) {
+        centralDirectoryData = new byte[length];
+        System.arraycopy(buffer, offset, centralDirectoryData, 0, length);
+        if (localFileData == null) {
+            parseFromLocalFileData(buffer, offset, length);
+        }
+    }
+
+}