org.apache.axiom.attachments.CountingInputStream Maven / Gradle / Ivy
/*
* 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.axiom.attachments;
import java.io.IOException;
import java.io.InputStream;
final class CountingInputStream extends InputStream {
private final InputStream parent;
private long count;
CountingInputStream(InputStream parent) {
this.parent = parent;
}
long getCount() {
return count;
}
@Override
public int read() throws IOException {
int b = parent.read();
if (b != -1) {
count++;
}
return b;
}
@Override
public int read(byte[] b) throws IOException {
int read = parent.read(b);
if (read != -1) {
count += read;
}
return read;
}
@Override
public int read(byte[] b, int off, int len) throws IOException {
int read = parent.read(b, off, len);
if (read != -1) {
count += read;
}
return read;
}
@Override
public long skip(long n) throws IOException {
long skipped = parent.skip(n);
count += skipped;
return skipped;
}
@Override
public int available() throws IOException {
return parent.available();
}
@Override
public void close() throws IOException {
parent.close();
}
}