org.apache.jasper.compiler.AntCompiler Maven / Gradle / Ivy
/*
* 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.ByteArrayOutputStream;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.PrintStream;
import java.util.Map;
import java.util.StringTokenizer;
import org.apache.jasper.Constants;
import org.apache.jasper.JasperException;
import org.apache.juli.logging.Log;
import org.apache.juli.logging.LogFactory;
import org.apache.tools.ant.BuildException;
import org.apache.tools.ant.DefaultLogger;
import org.apache.tools.ant.Project;
import org.apache.tools.ant.taskdefs.Javac;
import org.apache.tools.ant.types.Path;
import org.apache.tools.ant.types.PatternSet;
/**
* Main JSP compiler class. This class uses Ant for compiling.
*
* @author Anil K. Vijendran
* @author Mandar Raje
* @author Pierre Delisle
* @author Kin-man Chung
* @author Remy Maucherat
* @author Mark Roth
*/
public class AntCompiler extends Compiler {
private final Log log = LogFactory.getLog(AntCompiler.class); // must not be static
protected static final Object javacLock = new Object();
static {
System.setErr(new SystemLogHandler(System.err));
}
// ----------------------------------------------------- Instance Variables
protected Project project = null;
protected JasperAntLogger logger;
// ------------------------------------------------------------ Constructor
// Lazy eval - if we don't need to compile we probably don't need the project
protected Project getProject() {
if (project != null) {
return project;
}
// Initializing project
project = new Project();
logger = new JasperAntLogger();
logger.setOutputPrintStream(System.out);
logger.setErrorPrintStream(System.err);
logger.setMessageOutputLevel(Project.MSG_INFO);
project.addBuildListener( logger);
if (System.getProperty(Constants.CATALINA_HOME_PROP) != null) {
project.setBasedir(System.getProperty(Constants.CATALINA_HOME_PROP));
}
if( options.getCompiler() != null ) {
if( log.isDebugEnabled() ) {
log.debug("Compiler " + options.getCompiler() );
}
project.setProperty("build.compiler", options.getCompiler() );
}
project.init();
return project;
}
public static class JasperAntLogger extends DefaultLogger {
protected final StringBuilder reportBuf = new StringBuilder();
@Override
protected void printMessage(final String message,
final PrintStream stream,
final int priority) {
}
@Override
protected void log(String message) {
reportBuf.append(message);
reportBuf.append(System.lineSeparator());
}
protected String getReport() {
String report = reportBuf.toString();
reportBuf.setLength(0);
return report;
}
}
// --------------------------------------------------------- Public Methods
/**
* Compile the servlet from .java file to .class file
*/
@Override
protected void generateClass(Map smaps)
throws FileNotFoundException, JasperException, Exception {
long t1 = 0;
if (log.isDebugEnabled()) {
t1 = System.currentTimeMillis();
}
String javaEncoding = ctxt.getOptions().getJavaEncoding();
String javaFileName = ctxt.getServletJavaFileName();
String classpath = ctxt.getClassPath();
StringBuilder errorReport = new StringBuilder();
StringBuilder info=new StringBuilder();
info.append("Compile: javaFileName=" + javaFileName + "\n" );
info.append(" classpath=" + classpath + "\n" );
// Start capturing the System.err output for this thread
SystemLogHandler.setThread();
// Initializing javac task
getProject();
Javac javac = (Javac) project.createTask("javac");
// Initializing classpath
Path path = new Path(project);
path.setPath(System.getProperty("java.class.path"));
info.append(" cp=" + System.getProperty("java.class.path") + "\n");
StringTokenizer tokenizer = new StringTokenizer(classpath, File.pathSeparator);
while (tokenizer.hasMoreElements()) {
String pathElement = tokenizer.nextToken();
File repository = new File(pathElement);
path.setLocation(repository);
info.append(" cp=" + repository + "\n");
}
if (log.isDebugEnabled()) {
log.debug( "Using classpath: " + System.getProperty("java.class.path") +
File.pathSeparator + classpath);
}
// Initializing sourcepath
Path srcPath = new Path(project);
srcPath.setLocation(options.getScratchDir());
info.append(" work dir=" + options.getScratchDir() + "\n");
// Initialize and set java extensions
String exts = System.getProperty("java.ext.dirs");
if (exts != null) {
Path extdirs = new Path(project);
extdirs.setPath(exts);
javac.setExtdirs(extdirs);
info.append(" extension dir=" + exts + "\n");
}
// Configure the compiler object
javac.setEncoding(javaEncoding);
javac.setClasspath(path);
javac.setDebug(ctxt.getOptions().getClassDebugInfo());
javac.setSrcdir(srcPath);
javac.setTempdir(options.getScratchDir());
javac.setFork(ctxt.getOptions().getFork());
info.append(" srcDir=" + srcPath + "\n" );
// Set the Java compiler to use
if (options.getCompiler() != null) {
javac.setCompiler(options.getCompiler());
info.append(" compiler=" + options.getCompiler() + "\n");
}
if (options.getCompilerTargetVM() != null) {
javac.setTarget(options.getCompilerTargetVM());
info.append(" compilerTargetVM=" + options.getCompilerTargetVM() + "\n");
}
if (options.getCompilerSourceVM() != null) {
javac.setSource(options.getCompilerSourceVM());
info.append(" compilerSourceVM=" + options.getCompilerSourceVM() + "\n");
}
// Build includes path
PatternSet.NameEntry includes = javac.createInclude();
includes.setName(ctxt.getJavaPath());
info.append(" include="+ ctxt.getJavaPath() + "\n" );
BuildException be = null;
try {
if (ctxt.getOptions().getFork()) {
javac.execute();
} else {
synchronized(javacLock) {
javac.execute();
}
}
} catch (BuildException e) {
be = e;
log.error(Localizer.getMessage("jsp.error.javac"), e);
log.error(Localizer.getMessage("jsp.error.javac.env") + info.toString());
}
errorReport.append(logger.getReport());
// Stop capturing the System.err output for this thread
String errorCapture = SystemLogHandler.unsetThread();
if (errorCapture != null) {
errorReport.append(System.lineSeparator());
errorReport.append(errorCapture);
}
if (!ctxt.keepGenerated()) {
File javaFile = new File(javaFileName);
if (!javaFile.delete()) {
throw new JasperException(Localizer.getMessage(
"jsp.warning.compiler.javafile.delete.fail", javaFile));
}
}
if (be != null) {
String errorReportString = errorReport.toString();
log.error(Localizer.getMessage("jsp.error.compilation", javaFileName, errorReportString));
JavacErrorDetail[] javacErrors = ErrorDispatcher.parseJavacErrors(
errorReportString, javaFileName, pageNodes);
if (javacErrors != null) {
errDispatcher.javacError(javacErrors);
} else {
errDispatcher.javacError(errorReportString, be);
}
}
if( log.isDebugEnabled() ) {
long t2 = System.currentTimeMillis();
log.debug("Compiled " + ctxt.getServletJavaFileName() + " "
+ (t2-t1) + "ms");
}
logger = null;
project = null;
if (ctxt.isPrototypeMode()) {
return;
}
// JSR45 Support
if (!options.isSmapSuppressed()) {
SmapUtil.installSmap(smaps);
}
}
protected static class SystemLogHandler extends PrintStream {
// ----------------------------------------------------------- Constructors
/**
* Construct the handler to capture the output of the given steam.
* @param wrapped The wrapped stream
*/
public SystemLogHandler(PrintStream wrapped) {
super(wrapped);
this.wrapped = wrapped;
}
// ----------------------------------------------------- Instance Variables
/**
* Wrapped PrintStream.
*/
protected final PrintStream wrapped;
/**
* Thread <-> PrintStream associations.
*/
protected static final ThreadLocal streams =
new ThreadLocal<>();
/**
* Thread <-> ByteArrayOutputStream associations.
*/
protected static final ThreadLocal data =
new ThreadLocal<>();
// --------------------------------------------------------- Public Methods
/**
* Start capturing thread's output.
*/
public static void setThread() {
ByteArrayOutputStream baos = new ByteArrayOutputStream();
data.set(baos);
streams.set(new PrintStream(baos));
}
/**
* Stop capturing thread's output and return captured data as a String.
* @return the captured output
*/
public static String unsetThread() {
ByteArrayOutputStream baos = data.get();
if (baos == null) {
return null;
}
streams.set(null);
data.set(null);
return baos.toString();
}
// ------------------------------------------------------ Protected Methods
/**
* Find PrintStream to which the output must be written to.
* @return the current stream
*/
protected PrintStream findStream() {
PrintStream ps = streams.get();
if (ps == null) {
ps = wrapped;
}
return ps;
}
// ---------------------------------------------------- PrintStream Methods
@Override
public void flush() {
findStream().flush();
}
@Override
public void close() {
findStream().close();
}
@Override
public boolean checkError() {
return findStream().checkError();
}
@Override
protected void setError() {
//findStream().setError();
}
@Override
public void write(int b) {
findStream().write(b);
}
@Override
public void write(byte[] b)
throws IOException {
findStream().write(b);
}
@Override
public void write(byte[] buf, int off, int len) {
findStream().write(buf, off, len);
}
@Override
public void print(boolean b) {
findStream().print(b);
}
@Override
public void print(char c) {
findStream().print(c);
}
@Override
public void print(int i) {
findStream().print(i);
}
@Override
public void print(long l) {
findStream().print(l);
}
@Override
public void print(float f) {
findStream().print(f);
}
@Override
public void print(double d) {
findStream().print(d);
}
@Override
public void print(char[] s) {
findStream().print(s);
}
@Override
public void print(String s) {
findStream().print(s);
}
@Override
public void print(Object obj) {
findStream().print(obj);
}
@Override
public void println() {
findStream().println();
}
@Override
public void println(boolean x) {
findStream().println(x);
}
@Override
public void println(char x) {
findStream().println(x);
}
@Override
public void println(int x) {
findStream().println(x);
}
@Override
public void println(long x) {
findStream().println(x);
}
@Override
public void println(float x) {
findStream().println(x);
}
@Override
public void println(double x) {
findStream().println(x);
}
@Override
public void println(char[] x) {
findStream().println(x);
}
@Override
public void println(String x) {
findStream().println(x);
}
@Override
public void println(Object x) {
findStream().println(x);
}
}
}