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.utils; 18 19 import java.io.IOException; 20 import java.io.UncheckedIOException; 21 import java.util.function.Function; 22 import javax.annotation.Nonnull; 23 import javax.annotation.Nullable; 24 25 /** 26 * Function that can throw an I/O Exception 27 */ 28 @FunctionalInterface 29 public interface IOExceptionFunction<F, T> { 30 31 /** 32 * Applies the function to the given input. 33 * @param input the input 34 * @return the function result 35 */ 36 @Nullable T apply(@Nullable F input) throws IOException; 37 38 /** 39 * Wraps a function that may throw an IO Exception throwing an {@code UncheckedIOException}. 40 * 41 * @param f the function 42 */ 43 @Nonnull 44 static <F, T> Function<F, T> asFunction(@Nonnull IOExceptionFunction<F, T> f) { 45 return i -> { 46 try { 47 return f.apply(i); 48 } catch (IOException e) { 49 throw new UncheckedIOException(e); 50 } 51 }; 52 } 53 } 54
