001/* 002 * Copyright 2007-2018 The jdeb developers. 003 * 004 * Licensed under the Apache License, Version 2.0 (the "License"); 005 * you may not use this file except in compliance with the License. 006 * You may obtain a copy of the License at 007 * 008 * http://www.apache.org/licenses/LICENSE-2.0 009 * 010 * Unless required by applicable law or agreed to in writing, software 011 * distributed under the License is distributed on an "AS IS" BASIS, 012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 013 * See the License for the specific language governing permissions and 014 * limitations under the License. 015 */ 016package org.vafer.jdeb.utils; 017 018import java.io.IOException; 019import java.io.OutputStream; 020import java.security.DigestOutputStream; 021import java.security.MessageDigest; 022 023/** 024 * Convenience class to provide digest info and length of a stream. 025 * 026 * ATTENTION: don't use outside of jdeb 027 */ 028public class InformationOutputStream extends DigestOutputStream { 029 030 private final MessageDigest digest; 031 private long size; 032 033 public InformationOutputStream( OutputStream pStream, MessageDigest pDigest ) { 034 super(pStream, pDigest); 035 digest = pDigest; 036 size = 0; 037 } 038 039 public String getHexDigest() { 040 return Utils.toHex(digest.digest()); 041 } 042 043 public void write( byte[] b, int off, int len ) throws IOException { 044 super.write(b, off, len); 045 size += len; 046 } 047 048 public void write( int b ) throws IOException { 049 super.write(b); 050 size++; 051 } 052 053 public long getSize() { 054 return size; 055 } 056}