org.springframework.util.CommonsLogWriter Maven / Gradle / Ivy
/*
* Copyright 2002-2018 the original author or authors.
*
* 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 org.springframework.util;
import java.io.Writer;
import org.apache.commons.logging.Log;
/**
* {@code java.io.Writer} adapter for a Commons Logging {@code Log}.
*
* @author Juergen Hoeller
* @since 2.5.1
*/
public class CommonsLogWriter extends Writer {
private final Log logger;
private final StringBuilder buffer = new StringBuilder();
/**
* Create a new CommonsLogWriter for the given Commons Logging logger.
* @param logger the Commons Logging logger to write to
*/
public CommonsLogWriter(Log logger) {
Assert.notNull(logger, "Logger must not be null");
this.logger = logger;
}
public void write(char ch) {
if (ch == '\n' && this.buffer.length() > 0) {
logger.debug(this.buffer.toString());
this.buffer.setLength(0);
}
else {
this.buffer.append(ch);
}
}
@Override
public void write(char[] buffer, int offset, int length) {
for (int i = 0; i < length; i++) {
char ch = buffer[offset + i];
if (ch == '\n' && this.buffer.length() > 0) {
logger.debug(this.buffer.toString());
this.buffer.setLength(0);
}
else {
this.buffer.append(ch);
}
}
}
@Override
public void flush() {
}
@Override
public void close() {
}
}