001/*
002 * Licensed to the Apache Software Foundation (ASF) under one or more
003 * contributor license agreements.  See the NOTICE file distributed with
004 * this work for additional information regarding copyright ownership.
005 * The ASF licenses this file to You under the Apache License, Version 2.0
006 * (the "License"); you may not use this file except in compliance with
007 * the License.  You may obtain a copy of the License at
008 *
009 *     http://www.apache.org/licenses/LICENSE-2.0
010 *
011 * Unless required by applicable law or agreed to in writing, software
012 * distributed under the License is distributed on an "AS IS" BASIS,
013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014 * See the License for the specific language governing permissions and
015 * limitations under the License.
016 */
017
018package org.apache.logging.log4j.io.internal;
019
020import java.io.FilterOutputStream;
021import java.io.IOException;
022import java.io.OutputStream;
023import java.nio.charset.Charset;
024
025import org.apache.logging.log4j.Level;
026import org.apache.logging.log4j.Marker;
027import org.apache.logging.log4j.io.ByteStreamLogger;
028import org.apache.logging.log4j.spi.ExtendedLogger;
029
030/**
031 * Internal class that exists primiarly to allow location calculations to work.
032 *
033 * @since 2.12
034 */
035public class InternalFilterOutputStream extends FilterOutputStream {
036
037    private final ByteStreamLogger logger;
038    private final String fqcn;
039
040    public InternalFilterOutputStream(final OutputStream out, final Charset charset, final ExtendedLogger logger,
041                                       final String fqcn, final Level level, final Marker marker) {
042        super(out);
043        this.logger = new ByteStreamLogger(logger, level, marker, charset);
044        this.fqcn = fqcn;
045    }
046
047    @Override
048    public void close() throws IOException {
049        this.out.close();
050        this.logger.close(this.fqcn);
051    }
052
053    @Override
054    public void flush() throws IOException {
055        this.out.flush();
056    }
057
058    @Override
059    public String toString() {
060        return "{stream=" + this.out + '}';
061    }
062
063    @Override
064    public void write(final byte[] b) throws IOException {
065        this.out.write(b);
066        this.logger.put(this.fqcn, b, 0, b.length);
067    }
068
069    @Override
070    public void write(final byte[] b, final int off, final int len) throws IOException {
071        this.out.write(b, off, len);
072        this.logger.put(this.fqcn, b, off, len);
073    }
074
075    @Override
076    public void write(final int b) throws IOException {
077        this.out.write(b);
078        this.logger.put(this.fqcn, (byte) (b & 0xFF));
079    }
080}