com.github.robozonky.internal.remote.InterceptingInputStream Maven / Gradle / Ivy
/*
* Copyright 2019 The RoboZonky Project
*
* Licensed 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 com.github.robozonky.internal.remote;
import java.io.BufferedInputStream;
import java.io.IOException;
import java.io.InputStream;
import com.github.robozonky.internal.Defaults;
class InterceptingInputStream extends InputStream {
private static final int MAX_ENTITY_SIZE = 1024;
private final InputStream source;
private final String intercepted;
public InterceptingInputStream(final InputStream source) throws IOException {
this.source = new BufferedInputStream(source); // to ensure mark() is supported
this.source.mark(MAX_ENTITY_SIZE + 1);
final byte[] entity = new byte[MAX_ENTITY_SIZE + 1];
final int entitySize = this.source.read(entity);
final StringBuilder s = new StringBuilder(MAX_ENTITY_SIZE);
s.append(new String(entity, 0, Math.min(entitySize, MAX_ENTITY_SIZE), Defaults.CHARSET));
if (entitySize > MAX_ENTITY_SIZE) {
s.append("...more...");
}
this.intercepted = s.toString();
this.source.reset();
}
public String getContents() {
return intercepted;
}
@Override
public int read() throws IOException {
return source.read();
}
}