1 /*
2  * Copyright (C) 2016 The Android Open Source Project
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  *      http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 
17 package com.android.tools.build.apkzlib.zip;
18 
19 import com.android.tools.build.apkzlib.zip.utils.CloseableByteSource;
20 import com.google.common.util.concurrent.ListenableFuture;
21 import javax.annotation.Nonnull;
22 
23 /**
24  * A compressor is capable of, well, compressing data. Data is read from an {@code ByteSource}.
25  * Compressors are asynchronous: compressing results in a {@code ListenableFuture} that will contain
26  * the compression result.
27  */
28 public interface Compressor {
29 
30     /**
31      * Compresses an entry source.
32      *
33      * @param source the source to compress
34      * @return a future that will eventually contain the compression result
35      */
36     @Nonnull
compress(@onnull CloseableByteSource source)37     ListenableFuture<CompressionResult> compress(@Nonnull CloseableByteSource source);
38 }
39