1090f9b4c879985bc747c214f82c62471e60c7742Jesse Wilson/* 21d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert * Copyright (C) 2007 The Guava Authors 3090f9b4c879985bc747c214f82c62471e60c7742Jesse Wilson * 4090f9b4c879985bc747c214f82c62471e60c7742Jesse Wilson * Licensed under the Apache License, Version 2.0 (the "License"); 5090f9b4c879985bc747c214f82c62471e60c7742Jesse Wilson * you may not use this file except in compliance with the License. 6090f9b4c879985bc747c214f82c62471e60c7742Jesse Wilson * You may obtain a copy of the License at 7090f9b4c879985bc747c214f82c62471e60c7742Jesse Wilson * 8090f9b4c879985bc747c214f82c62471e60c7742Jesse Wilson * http://www.apache.org/licenses/LICENSE-2.0 9090f9b4c879985bc747c214f82c62471e60c7742Jesse Wilson * 10090f9b4c879985bc747c214f82c62471e60c7742Jesse Wilson * Unless required by applicable law or agreed to in writing, software 11090f9b4c879985bc747c214f82c62471e60c7742Jesse Wilson * distributed under the License is distributed on an "AS IS" BASIS, 12090f9b4c879985bc747c214f82c62471e60c7742Jesse Wilson * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13090f9b4c879985bc747c214f82c62471e60c7742Jesse Wilson * See the License for the specific language governing permissions and 14090f9b4c879985bc747c214f82c62471e60c7742Jesse Wilson * limitations under the License. 15090f9b4c879985bc747c214f82c62471e60c7742Jesse Wilson */ 16090f9b4c879985bc747c214f82c62471e60c7742Jesse Wilson 17bfe2dd089341dcb4c1fb65a5b6b077ad0ebbf6dcDan Egnorpackage com.google.common.io; 18bfe2dd089341dcb4c1fb65a5b6b077ad0ebbf6dcDan Egnor 191d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringertimport java.io.FilterInputStream; 20bfe2dd089341dcb4c1fb65a5b6b077ad0ebbf6dcDan Egnorimport java.io.IOException; 211d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringertimport java.io.InputStream; 221d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringertimport java.util.Random; 23090f9b4c879985bc747c214f82c62471e60c7742Jesse Wilson 241d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert/** Returns a random portion of the requested bytes on each call. */ 251d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringertclass RandomAmountInputStream extends FilterInputStream { 261d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert private final Random random; 271d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert 281d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert public RandomAmountInputStream(InputStream in, Random random) { 291d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert super(in); 301d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert this.random = random; 311d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert } 321d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert 331d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert @Override public int read(byte[] b, int off, int len) throws IOException { 341d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert return super.read(b, off, random.nextInt(len) + 1); 351d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert } 36090f9b4c879985bc747c214f82c62471e60c7742Jesse Wilson} 37