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/*
* 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.jasper.compiler;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.lang.reflect.Field;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.net.URL;
import java.util.jar.JarFile;
import java.util.logging.Level;
import java.util.logging.Logger;
import org.apache.jasper.JasperException;
import org.apache.jasper.JspCompilationContext;
/**
*
* @author Petr Jiricka
*/
public class ParserControllerProxy {
private static final Logger LOGGER = Logger.getLogger(ParserControllerProxy.class.getName());
private final JspCompilationContext ctxt;
private final Compiler compiler;
private final ParserController pc;
boolean isXml;
String sourceEnc;
private static Method getJarFileM;
private static Method resolveFileNameM;
private static Method getJspConfigPageEncodingM;
private static Method determineSyntaxAndEncodingM;
private static Field isXmlF;
private static Field sourceEncF;
static {
initMethodsAndFields();
}
/** Creates a new instance of ParserControllerProxy */
public ParserControllerProxy(JspCompilationContext ctxt, Compiler compiler) {
this.ctxt = ctxt;
this.compiler = compiler;
pc = new ParserController(ctxt, compiler);
}
public static void initMethodsAndFields() {
try {
// getJarFile method
getJarFileM = ParserController.class.getDeclaredMethod("getJarFile", new Class[] {URL.class}); // NOI18N
getJarFileM.setAccessible(true);
// resolveFileName method
resolveFileNameM = ParserController.class.getDeclaredMethod("resolveFileName", new Class[] {String.class}); // NOI18N
resolveFileNameM.setAccessible(true);
// getJspConfigPageEncoding method
getJspConfigPageEncodingM = ParserController.class.getDeclaredMethod("getJspConfigPageEncoding", new Class[] {String.class}); // NOI18N
getJspConfigPageEncodingM.setAccessible(true);
// determineSyntaxAndEncoding method
determineSyntaxAndEncodingM = ParserController.class.getDeclaredMethod("determineSyntaxAndEncoding", new Class[] // NOI18N
{String.class, JarFile.class, String.class});
determineSyntaxAndEncodingM.setAccessible(true);
// isXML field
isXmlF = ParserController.class.getDeclaredField("isXml"); // NOI18N
isXmlF.setAccessible(true);
// sourceEnc field
sourceEncF = ParserController.class.getDeclaredField("sourceEnc"); // NOI18N
sourceEncF.setAccessible(true);
} catch (NoSuchMethodException e) {
LOGGER.log(Level.INFO, null, e);
} catch (NoSuchFieldException e) {
LOGGER.log(Level.INFO, null, e);
}
}
public void extractSyntaxAndEncoding(String inFileName)
throws FileNotFoundException, JasperException, IOException {
// If we're parsing a packaged tag file or a resource included by it
// (using an include directive), ctxt.getTagFileJar() returns the
// JAR file from which to read the tag file or included resource,
// respectively.
extractSyntaxAndEncoding(inFileName, ctxt.getTagFileJarUrl());
}
private void extractSyntaxAndEncoding(String inFileName, URL jarFileUrl)
throws FileNotFoundException, JasperException, IOException {
try {
JarFile jarFile = (JarFile)getJarFileM.invoke(pc, new Object[] {jarFileUrl});
String absFileName = (String)resolveFileNameM.invoke(pc, new Object[] {inFileName});
String jspConfigPageEnc = (String)getJspConfigPageEncodingM.invoke(pc, new Object[] {absFileName});
// Figure out what type of JSP document and encoding type we are
// dealing with
determineSyntaxAndEncodingM.invoke(pc, new Object[] {absFileName, jarFile, jspConfigPageEnc});
// now the isXml and sourceEnc variables of ParserController have values
isXml = ((Boolean)isXmlF.get(pc)).booleanValue();
sourceEnc = (String)sourceEncF.get(pc);
} catch (IllegalAccessException e) {
LOGGER.log(Level.INFO, null, e);
throw new JasperException(e);
} catch (InvocationTargetException e) {
Throwable r = e.getTargetException();
if (r instanceof RuntimeException) {
throw (RuntimeException)r;
}
if (r instanceof FileNotFoundException) {
throw (FileNotFoundException)r;
}
if (r instanceof JasperException) {
throw (JasperException)r;
}
if (r instanceof IOException) {
throw (IOException)r;
}
LOGGER.log(Level.INFO, null, e);
throw new JasperException(e);
}
}
}
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