001: /*
002: * The Apache Software License, Version 1.1
003: *
004: * Copyright (c) 1999 The Apache Software Foundation. All rights
005: * reserved.
006: *
007: * Redistribution and use in source and binary forms, with or without
008: * modification, are permitted provided that the following conditions
009: * are met:
010: *
011: * 1. Redistributions of source code must retain the above copyright
012: * notice, this list of conditions and the following disclaimer.
013: *
014: * 2. Redistributions in binary form must reproduce the above copyright
015: * notice, this list of conditions and the following disclaimer in
016: * the documentation and/or other materials provided with the
017: * distribution.
018: *
019: * 3. The end-user documentation included with the redistribution, if
020: * any, must include the following acknowlegement:
021: * "This product includes software developed by the
022: * Apache Software Foundation (http://www.apache.org/)."
023: * Alternately, this acknowlegement may appear in the software itself,
024: * if and wherever such third-party acknowlegements normally appear.
025: *
026: * 4. The names "The Jakarta Project", "Tomcat", and "Apache Software
027: * Foundation" must not be used to endorse or promote products derived
028: * from this software without prior written permission. For written
029: * permission, please contact apache@apache.org.
030: *
031: * 5. Products derived from this software may not be called "Apache"
032: * nor may "Apache" appear in their names without prior written
033: * permission of the Apache Group.
034: *
035: * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
036: * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
037: * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
038: * DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
039: * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
040: * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
041: * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
042: * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
043: * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
044: * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
045: * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
046: * SUCH DAMAGE.
047: * ====================================================================
048: *
049: * This software consists of voluntary contributions made by many
050: * individuals on behalf of the Apache Software Foundation. For more
051: * information on the Apache Software Foundation, please see
052: * <http://www.apache.org/>.
053: *
054: */
055:
056: package com.sun.portal.providers.jsp.jasper3.jasper.runtime;
057:
058: import java.io.FileInputStream;
059: import java.io.ByteArrayOutputStream;
060: import java.io.File;
061: import java.io.FileNotFoundException;
062: import java.io.InputStream;
063: import java.io.IOException;
064:
065: import java.util.Hashtable;
066: import java.util.Vector;
067: import java.util.zip.ZipFile;
068: import java.util.zip.ZipEntry;
069: import java.net.URL;
070:
071: import java.security.*;
072:
073: import com.sun.portal.providers.jsp.jasper3.jasper.JasperException;
074: import com.sun.portal.providers.jsp.jasper3.jasper.Constants;
075: import com.sun.portal.providers.jsp.jasper3.jasper.Options;
076:
077: import com.sun.portal.providers.jsp.jasper3.tomcat.logging.Logger;
078: import javax.servlet.http.*;
079:
080: /**
081: * Jsp compiler and runtime depends on special features from the
082: * ClassLoader.
083: *
084: * It has to allow run-time addition of class paths and provide
085: * access to the class path.
086: *
087: * The loader is also responsible for detecting changes and reloading.
088: *
089: * @author Anil K. Vijendran
090: * @author Harish Prabandham
091: * @author Costin Manolache
092: */
093: public abstract class JspLoader extends ClassLoader {
094: protected ClassLoader parent;
095: protected Options options;
096:
097: // Object pd;
098:
099: /*
100: * This should be factoried out
101: */
102: protected JspLoader() {
103: super ();
104: }
105:
106: public void setParentClassLoader(ClassLoader cl) {
107: this .parent = cl;
108: }
109:
110: // The only thing we use is getScratchDir !
111: public void setOptions(Options options) {
112: this .options = options;
113: }
114:
115: protected Vector jars = new Vector();
116:
117: public void addJar(String jarFileName) throws IOException {
118: if (!jars.contains(jarFileName)) {
119: Constants.message("jsp.message.adding_jar",
120: new Object[] { jarFileName }, Logger.INFORMATION);
121:
122: jars.addElement(jarFileName);
123: }
124: }
125:
126: public String getClassPath() {
127: StringBuffer cpath = new StringBuffer();
128: String sep = System.getProperty("path.separator");
129:
130: for (int i = 0; i < jars.size(); i++) {
131: cpath.append((String) jars.elementAt(i) + sep);
132: }
133:
134: return cpath.toString();
135: }
136: }
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