kinman 2002/08/19 20:54:54 Added: jasper2/src/share/org/apache/jasper/compiler JspConfig.java Log: - Added for JSP configuration support Revision Changes Path 1.1 jakarta-tomcat-jasper/jasper2/src/share/org/apache/jasper/compiler/JspConfig.java Index: JspConfig.java =================================================================== /* * $Header: /home/cvs/jakarta-tomcat-jasper/jasper2/src/share/org/apache/jasper/compiler/JspConfig.java,v 1.1 2002/08/20 03:54:54 kinman Exp $ * $Revision: 1.1 $ * $Date: 2002/08/20 03:54:54 $ * * ==================================================================== * * 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 [EMAIL PROTECTED] * * 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/>. * */ package org.apache.jasper.compiler; import java.util.Vector; import java.io.InputStream; import java.util.Iterator; import javax.servlet.ServletContext; import org.apache.jasper.Constants; import org.apache.jasper.logging.Logger; import org.apache.jasper.JasperException; import org.apache.jasper.xmlparser.ParserUtils; import org.apache.jasper.xmlparser.TreeNode; /** * Handles the jsp-config element in WEB_INF/web.xml. This is used * for specifying the JSP configuration informantion on a JSP page * * @authro Kin-man Chung */ public class JspConfig { static private final String WEB_XML = "/WEB-INF/web.xml"; private Vector jspProperties = null; private ServletContext ctxt; private boolean initialized = false; private String defaultIsXml = "false"; private String defaultIsELEnabled = "true"; private String defaultIsScriptingEnabled = "true"; public JspConfig(ServletContext ctxt) { this.ctxt = ctxt; } private void processWebDotXml(ServletContext ctxt) throws JasperException { InputStream is = ctxt.getResourceAsStream(WEB_XML); if (is == null) { // no web.xml return; } ClassLoader cl = this.getClass().getClassLoader(); ParserUtils pu = ParserUtils.createParserUtils(cl); TreeNode webApp = pu.parseXMLDocument(WEB_XML, is); if (webApp == null || !"2.4".equals(webApp.findAttribute("version"))) { System.out.println("Servlet 2.3"); defaultIsELEnabled = "false"; return; } TreeNode jspConfig = webApp.findChild("jsp-config"); if (jspConfig == null) { return; } jspProperties = new Vector(); Iterator jspPropertyList = jspConfig.findChildren("jsp-property-group"); while (jspPropertyList.hasNext()) { TreeNode element = (TreeNode) jspPropertyList.next(); Iterator list = element.findChildren(); String urlPattern = null; String pageEncoding = null; String scriptingEnabled = null; String elEnabled = null; String isXml = null; Vector includePrelude = new Vector(); Vector includeCoda = new Vector(); while (list.hasNext()) { element = (TreeNode) list.next(); String tname = element.getName(); if ("url-pattern".equals(tname)) urlPattern = element.getBody(); else if ("page-encoding".equals(tname)) pageEncoding = element.getBody(); else if ("is-xml".equals(tname)) isXml = element.getBody(); else if ("el-enabled".equals(tname)) elEnabled = element.getBody(); else if ("scripting-enabled".equals(tname)) scriptingEnabled = element.getBody(); else if ("include-prelude".equals(tname)) includePrelude.addElement(element.getBody()); else if ("include-coda".equals(tname)) includeCoda.addElement(element.getBody()); } String path = null; String extension = null; if (urlPattern == null) { continue; } if (urlPattern.indexOf('*') < 0) { // Exact match path = urlPattern; } else { int i = urlPattern.lastIndexOf('/'); String file; if (i >= 0) { path = urlPattern.substring(0,i+1); file = urlPattern.substring(i+1); } else { file = urlPattern; } // pattern must be "*", or of the form "*.jsp" if (file.equals("*")) { extension = "*"; } else if (file.startsWith("*.")) { extension = file.substring(file.indexOf('.')+1); } else { Constants.message( "jsp.warning.bad.urlpattern.propertygroup", new Object[] {urlPattern}, Logger.WARNING); continue; } } JspProperty property = new JspProperty(isXml, elEnabled, scriptingEnabled, pageEncoding, includePrelude, includeCoda); JspPropertyGroup propertyGroup = new JspPropertyGroup(path, extension, property); jspProperties.addElement(propertyGroup); } } /** * Find a property that best match the supplied resource. * @param uri the resource supplied. * @return a JspProperty if a match is found, null otherwise */ public JspProperty findJspProperty(String uri) throws JasperException { if (!initialized) { processWebDotXml(ctxt); initialized = true; } if (jspProperties == null) { return new JspProperty(defaultIsXml, defaultIsELEnabled, defaultIsScriptingEnabled, null, null, null); } String uriPath = null; int index = uri.lastIndexOf('/'); if (index >=0 ) { uriPath = uri.substring(0, index+1); } String uriExtension = null; index = uri.lastIndexOf('.'); if (index >=0) { uriExtension = uri.substring(index+1); } Vector includePreludes = new Vector(); Vector includeCodas = new Vector(); JspPropertyGroup isXmlMatch = null; JspPropertyGroup elEnabledMatch = null; JspPropertyGroup scriptingEnabledMatch = null; JspPropertyGroup pageEncodingMatch = null; Iterator iter = jspProperties.iterator(); while (iter.hasNext()) { JspPropertyGroup jpg = (JspPropertyGroup) iter.next(); JspProperty jp = jpg.getJspProperty(); if (jpg.getExtension() == null) { // exact match pattern: /a/foo.jsp if (!uri.equals(jpg.getPath())) { // not matched; continue; } // Add include-preludes and include-codas if (jp.getIncludePrelude() != null) { includePreludes.addAll(jp.getIncludePrelude()); } if (jp.getIncludeCoda() != null) { includeCodas.addAll(jp.getIncludeCoda()); } // For other attributes, keep the best match. if (jp.isXml() != null) { isXmlMatch = jpg; } if (jp.isELEnabled() != null) { elEnabledMatch = jpg; } if (jp.isScriptingEnabled() != null) { scriptingEnabledMatch = jpg; } if (jp.getPageEncoding() != null) { pageEncodingMatch = jpg; } } else { // Possible patterns are *, *.ext, /p/*, and /p/*.ext if (jpg.getPath() != null && !jpg.getPath().equals(uriPath)) { // not matched continue; } if (!jpg.getExtension().equals("*") && !jpg.getExtension().equals(uriExtension)) { // not matched continue; } // We have a match // Add include-preludes and include-codas if (jp.getIncludePrelude() != null) { includePreludes.addAll(jp.getIncludePrelude()); } if (jp.getIncludeCoda() != null) { includeCodas.addAll(jp.getIncludeCoda()); } // If there is a previous match, and the current match is // more restrictive, use the current match. if (jp.isXml() != null && (isXmlMatch == null || (isXmlMatch.getExtension() != null && isXmlMatch.getExtension().equals("*")))) { isXmlMatch = jpg; } if (jp.isELEnabled() != null && (elEnabledMatch == null || (elEnabledMatch.getExtension() != null && elEnabledMatch.getExtension().equals("*")))) { elEnabledMatch = jpg; } if (jp.isScriptingEnabled() != null && (scriptingEnabledMatch == null || (scriptingEnabledMatch.getExtension() != null && scriptingEnabledMatch.getExtension().equals("*")))) { scriptingEnabledMatch = jpg; } if (jp.getPageEncoding() != null && (pageEncodingMatch == null || (pageEncodingMatch.getExtension() != null && pageEncodingMatch.getExtension().equals("*")))) { pageEncodingMatch = jpg; } } } String isXml = defaultIsXml; String isELEnabled = defaultIsELEnabled; String isScriptingEnabled = defaultIsScriptingEnabled; String pageEncoding = null; if (isXmlMatch != null) { isXml = isXmlMatch.getJspProperty().isXml(); } if (elEnabledMatch != null) { isELEnabled = elEnabledMatch.getJspProperty().isELEnabled(); } if (scriptingEnabledMatch != null) { isScriptingEnabled = scriptingEnabledMatch.getJspProperty().isScriptingEnabled(); } if (pageEncodingMatch != null) { pageEncoding = pageEncodingMatch.getJspProperty().getPageEncoding(); } return new JspProperty(isXml, isELEnabled, isScriptingEnabled, pageEncoding, includePreludes, includeCodas); } static class JspPropertyGroup { private String path; private String extension; private JspProperty jspProperty; JspPropertyGroup(String path, String extension, JspProperty jspProperty) { this.path = path; this.extension = extension; this.jspProperty = jspProperty; } public String getPath() { return path; } public String getExtension() { return extension; } public JspProperty getJspProperty() { return jspProperty; } } static public class JspProperty { private String isXml; private String elEnabled; private String scriptingEnabled; private String pageEncoding; private Vector includePrelude; private Vector includeCoda; JspProperty(String isXml, String elEnabled, String scriptingEnabled, String pageEncoding, Vector includePrelude, Vector includeCoda) { this.isXml = isXml; this.elEnabled = elEnabled; this.scriptingEnabled = scriptingEnabled; this.pageEncoding = pageEncoding; this.includePrelude = includePrelude; this.includeCoda = includeCoda; } public String isXml() { return isXml; } public String isELEnabled() { return elEnabled; } public String isScriptingEnabled() { return scriptingEnabled; } public String getPageEncoding() { return pageEncoding; } public Vector getIncludePrelude() { return includePrelude; } public Vector getIncludeCoda() { return includeCoda; } } }
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