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package org.apache.continuum.utils;

/*
 * 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.
 */

import java.io.PrintWriter;
import java.io.StringWriter;

/**
 * @author Trygve Laugstøl
 * @version $Id: ContinuumUtils.java 734441 2009-01-14 16:31:04Z ctan $
 */
public class ContinuumUtils
{
    public static final String EOL = System.getProperty( "line.separator" );

    public static String throwableToString( Throwable error )
    {
        if ( error == null )
        {
            return "";
        }

        StringWriter writer = new StringWriter();

        PrintWriter printer = new PrintWriter( writer );

        error.printStackTrace( printer );

        printer.flush();

        return writer.getBuffer().toString();
    }

    public static String throwableMessagesToString( Throwable error )
    {
        if ( error == null )
        {
            return "";
        }

        StringBuffer buffer = new StringBuffer();

        buffer.append( error.getMessage() );

        error = error.getCause();

        while ( error != null )
        {
            buffer.append( EOL );

            buffer.append( error.getMessage() );

            error = error.getCause();
        }

        return buffer.toString();
    }
}