-/*
- * 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.log4j;
-
-import org.apache.log4j.spi.ThrowableRenderer;
-
-import java.io.StringWriter;
-import java.io.PrintWriter;
-import java.io.LineNumberReader;
-import java.io.StringReader;
-import java.io.IOException;
-import java.io.InterruptedIOException;
-import java.util.ArrayList;
-
-/**
- * Default implementation of ThrowableRenderer using
- * Throwable.printStackTrace.
- *
- * @since 1.2.16
- */
-public final class DefaultThrowableRenderer implements ThrowableRenderer {
- /**
- * Construct new instance.
- */
- public DefaultThrowableRenderer() {
-
- }
-
-
- /**
- * {@inheritDoc}
- */
- public String[] doRender(final Throwable throwable) {
- return render(throwable);
- }
-
- /**
- * Render throwable using Throwable.printStackTrace.
- * @param throwable throwable, may not be null.
- * @return string representation.
- */
- public static String[] render(final Throwable throwable) {
- StringWriter sw = new StringWriter();
- PrintWriter pw = new PrintWriter(sw);
- try {
- throwable.printStackTrace(pw);
- } catch(RuntimeException ex) {
- }
- pw.flush();
- LineNumberReader reader = new LineNumberReader(
- new StringReader(sw.toString()));
- ArrayList lines = new ArrayList();
- try {
- String line = reader.readLine();
- while(line != null) {
- lines.add(line);
- line = reader.readLine();
- }
- } catch(IOException ex) {
- if (ex instanceof InterruptedIOException) {
- Thread.currentThread().interrupt();
- }
- lines.add(ex.toString());
- }
- String[] tempRep = new String[lines.size()];
- lines.toArray(tempRep);
- return tempRep;
- }
-}