org.apache.tomcat.util.compat.Jdk14Compat.java Source code

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Here is the source code for org.apache.tomcat.util.compat.Jdk14Compat.java

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/*
 * $Header: /home/cvs/jakarta-tomcat-connectors/util/java/org/apache/tomcat/util/compat/Jdk14Compat.java,v 1.7 2003/09/02 21:34:39 remm Exp $
 * $Revision: 1.7 $
 * $Date: 2003/09/02 21:34:39 $
 * ====================================================================
 *
 * The Apache Software License, Version 1.1
 *
 * Copyright (c) 1999 The Apache Software Foundation.  All rights
 * reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 *
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in
 *    the documentation and/or other materials provided with the
 *    distribution.
 *
 * 3. The end-user documentation included with the redistribution, if
 *    any, must include the following acknowlegement:
 *       "This product includes software developed by the
 *        Apache Software Foundation (http://www.apache.org/)."
 *    Alternately, this acknowlegement may appear in the software itself,
 *    if and wherever such third-party acknowlegements normally appear.
 *
 * 4. The names "The Jakarta Project", "Tomcat", and "Apache Software
 *    Foundation" must not be used to endorse or promote products derived
 *    from this software without prior written permission. For written
 *    permission, please contact apache@apache.org.
 *
 * 5. Products derived from this software may not be called "Apache"
 *    nor may "Apache" appear in their names without prior written
 *    permission of the Apache Group.
 *
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED.  IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 * ====================================================================
 *
 * This software consists of voluntary contributions made by many
 * individuals on behalf of the Apache Software Foundation.  For more
 * information on the Apache Software Foundation, please see
 * <http://www.apache.org/>.
 *
 * [Additional notices, if required by prior licensing conditions]
 *
 */

package org.apache.tomcat.util.compat;

import java.io.File;
import java.io.IOException;
import java.net.MalformedURLException;
import java.net.URL;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;

/**
 *  See JdkCompat. This is an extension of that class for Jdk1.4 support.
 *
 * @author Tim Funk
 * @author Remy Maucherat
 */
public class Jdk14Compat extends JdkCompat {
    // -------------------------------------------------------------- Constants

    // ------------------------------------------------------- Static Variables
    static Log logger = LogFactory.getLog(Jdk14Compat.class);

    // ----------------------------------------------------------- Constructors
    /**
     *  Default no-arg constructor
     */
    protected Jdk14Compat() {
    }

    // --------------------------------------------------------- Public Methods

    /**
     *  Return the URI for the given file. Originally created for
     *  o.a.c.loader.WebappClassLoader
     *
     *  @param File to wrap into URI
     *  @return A URI as a URL
     */
    public URL getURI(File file) throws MalformedURLException {

        File realFile = file;
        try {
            realFile = realFile.getCanonicalFile();
        } catch (IOException e) {
            // Ignore
        }

        return realFile.toURI().toURL();
    }

    /**
     *  Return the maximum amount of memory the JVM will attempt to use.
     */
    public long getMaxMemory() {
        return Runtime.getRuntime().maxMemory();
    }

    /**
     * Print out a partial servlet stack trace (truncating at the last 
     * occurrence of javax.servlet.).
     */
    public String getPartialServletStackTrace(Throwable t) {
        StringBuffer trace = new StringBuffer();
        trace.append(t.toString()).append('\n');
        StackTraceElement[] elements = t.getStackTrace();
        int pos = elements.length;
        for (int i = 0; i < elements.length; i++) {
            if ((elements[i].getClassName().startsWith("org.apache.catalina.core.ApplicationFilterChain"))
                    && (elements[i].getMethodName().equals("internalDoFilter"))) {
                pos = i;
            }
        }
        for (int i = 0; i < pos; i++) {
            if (!(elements[i].getClassName().startsWith("org.apache.catalina.core."))) {
                trace.append('\t').append(elements[i].toString()).append('\n');
            }
        }
        return trace.toString();
    }

    public String[] split(String path, String pat) {
        return path.split(pat);
    }
}