| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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 org.apache.commons.compress.compressors; |
| |
| import java.io.InputStream; |
| |
| public abstract class CompressorInputStream extends InputStream { |
| private long bytesRead; |
| |
| /** |
| * Increments the counter of already read bytes. |
| * Doesn't increment if the EOF has been hit (read == -1) |
| * |
| * @param read the number of bytes read |
| * |
| * @since 1.1 |
| */ |
| protected void count(final int read) { |
| count((long) read); |
| } |
| |
| /** |
| * Increments the counter of already read bytes. |
| * Doesn't increment if the EOF has been hit (read == -1) |
| * |
| * @param read the number of bytes read |
| */ |
| protected void count(final long read) { |
| if (read != -1) { |
| bytesRead = bytesRead + read; |
| } |
| } |
| |
| /** |
| * Decrements the counter of already read bytes. |
| * |
| * @param pushedBack the number of bytes pushed back. |
| * @since 1.7 |
| */ |
| protected void pushedBackBytes(final long pushedBack) { |
| bytesRead -= pushedBack; |
| } |
| |
| /** |
| * Returns the current number of bytes read from this stream. |
| * @return the number of read bytes |
| * @deprecated this method may yield wrong results for large |
| * archives, use #getBytesRead instead |
| */ |
| @Deprecated |
| public int getCount() { |
| return (int) bytesRead; |
| } |
| |
| /** |
| * Returns the current number of bytes read from this stream. |
| * @return the number of read bytes |
| * |
| * @since 1.1 |
| */ |
| public long getBytesRead() { |
| return bytesRead; |
| } |
| |
| /** |
| * Returns the amount of raw or compressed bytes read by the stream. |
| * |
| * <p>This implementation invokes {@link #getBytesRead}.</p> |
| * |
| * <p>Provides half of {@link |
| * org.apache.commons.compress.utils.InputStreamStatistics} |
| * without forcing subclasses to implement the other half.</p> |
| * |
| * @return the amount of decompressed bytes returned by the stream |
| * @since 1.17 |
| */ |
| public long getUncompressedCount() { |
| return getBytesRead(); |
| } |
| } |