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; 019 020import java.nio.CharBuffer; 021 022import org.apache.logging.log4j.Level; 023import org.apache.logging.log4j.Marker; 024import org.apache.logging.log4j.spi.ExtendedLogger; 025 026/** 027 * 028 * @since 2.1 029 */ 030public class CharStreamLogger { 031 private final ExtendedLogger logger; 032 private final Level level; 033 private final Marker marker; 034 private final StringBuilder msg = new StringBuilder(); 035 private boolean closed = false; 036 037 public CharStreamLogger(final ExtendedLogger logger, final Level level, final Marker marker) { 038 this.logger = logger; 039 this.level = level == null ? logger.getLevel() : level; 040 this.marker = marker; 041 } 042 043 public void close(final String fqcn) { 044 synchronized (this.msg) { 045 this.closed = true; 046 logEnd(fqcn); 047 } 048 } 049 050 private void log(final String fqcn) { 051 // convert to string now so async loggers work 052 this.logger.logIfEnabled(fqcn, this.level, this.marker, this.msg.toString()); 053 this.msg.setLength(0); 054 } 055 056 private void logEnd(final String fqcn) { 057 if (this.msg.length() > 0) { 058 log(fqcn); 059 } 060 } 061 062 public void put(final String fqcn, final char[] cbuf, final int off, final int len) { 063 put(fqcn, CharBuffer.wrap(cbuf), off, len); 064 } 065 066 public void put(final String fqcn, final CharSequence str, final int off, final int len) { 067 if (len >= 0) { 068 synchronized (this.msg) { 069 if (this.closed) { 070 return; 071 } 072 int start = off; 073 final int end = off + len; 074 for (int pos = off; pos < end; pos++) { 075 final char c = str.charAt(pos); 076 switch (c) { 077 case '\r': 078 case '\n': 079 this.msg.append(str, start, pos); 080 start = pos + 1; 081 if (c == '\n') { 082 log(fqcn); 083 } 084 break; 085 } 086 } 087 this.msg.append(str, start, end); 088 } 089 } else { 090 logEnd(fqcn); 091 } 092 } 093 094 public void put(final String fqcn, final int c) { 095 if (c >= 0) { 096 synchronized (this.msg) { 097 if (this.closed) { 098 return; 099 } 100 switch (c) { 101 case '\n': 102 log(fqcn); 103 break; 104 case '\r': 105 break; 106 default: 107 this.msg.append((char) c); 108 } 109 } 110 } else { 111 logEnd(fqcn); 112 } 113 } 114}