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/*
* Copyright (C) 2015 The Android Open Source Project
*
* 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 com.android.apkzlib.zip;
/**
* Type of data descriptor that an entry has. Data descriptors are used if the CRC and sizing data
* is not known when the data is being written and cannot be placed in the file's local header.
* In those cases, after the file data itself, a data descriptor is placed after the entry's
* contents.
* <p>
* While the zip specification says the data descriptor should be used but it is optional. We
* record also whether the data descriptor contained the 4-byte signature at the start of the
* block or not.
*/
public enum DataDescriptorType {
/**
* The entry has no data descriptor.
*/
NO_DATA_DESCRIPTOR(0),
/**
* The entry has a data descriptor that does not contain a signature.
*/
DATA_DESCRIPTOR_WITHOUT_SIGNATURE(12),
/**
* The entry has a data descriptor that contains a signature.
*/
DATA_DESCRIPTOR_WITH_SIGNATURE(16);
/**
* The number of bytes the data descriptor spans.
*/
public int size;
/**
* Creates a new data descriptor.
*
* @param size the number of bytes the data descriptor spans
*/
DataDescriptorType(int size) {
this.size = size;
}
}
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