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From r...@apache.org
Subject cvs commit: jakarta-tomcat-4.0/jasper/src/share/org/apache/jasper/compiler KjcJavaCompiler.java
Date Sat, 01 Dec 2001 17:50:53 GMT
remm        01/12/01 09:50:53

  Added:       jasper/src/share/org/apache/jasper/compiler
                        KjcJavaCompiler.java
  Log:
  - Add support for the KJC Java compiler.
    Patch submitted Takashi Okamoto <toraneko at kun.ne.jp>
  - Note: maybe the compiler support should be refactored to use Ant, as Costin
    suggested, since it would avoid having lots of different wrappers and duplicating
    functionality.
  
  Revision  Changes    Path
  1.1                  jakarta-tomcat-4.0/jasper/src/share/org/apache/jasper/compiler/KjcJavaCompiler.java
  
  Index: KjcJavaCompiler.java
  ===================================================================
  /*
   * $Header: /home/cvs/jakarta-tomcat-4.0/jasper/src/share/org/apache/jasper/compiler/KjcJavaCompiler.java,v
1.1 2001/12/01 17:50:53 remm Exp $
   * $Revision: 1.1 $
   * $Date: 2001/12/01 17:50:53 $
   *
   * ====================================================================
   *
   * 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/>.
   *
   */
  
  package org.apache.jasper.compiler;
  
  import java.io.OutputStream;
  import java.io.OutputStreamWriter;
  import java.io.PrintWriter;
  import java.io.File;
  
  import java.lang.reflect.Constructor;
  import java.lang.reflect.Method;
  import java.lang.reflect.InvocationTargetException;
  
  import org.apache.jasper.Constants;
  
  /**
   * A Plug-in class for specifying a 'kjc' compiler.
   *
   * Please link $CATALINA_HOME/jasper/jasper-compiler.jar and kjc.jar
   * (or kopi.jar) to $CATALINA_HOME/lib before use.
   +
   * Most of code in this class is copied from SunJavaCompiler.java.
   *
   * @author Anil K. Vijendran
   * @author Takashi Okamoto <tora@debian.org>
   * @author teik <teik@rd5.so-net.ne.jp>
   */
  public class KjcJavaCompiler implements JavaCompiler {
  
      String encoding;
      String classpath; // ignored
      String compilerPath;
      String outdir; // ignored
      OutputStream out;
  
      /**
       * Specify where the compiler can be found
       */
      public void setCompilerPath(String compilerPath) {
          // not used by the KjcJavaCompiler
  	this.compilerPath = compilerPath;
      }
  
      /**
       * Set the encoding (character set) of the source
       */
      public void setEncoding(String encoding) {
        this.encoding = encoding;
      }
  
      /**
       * Set the class path for the compiler
       */
      public void setClasspath(String classpath) {
        this.classpath = classpath;
      }
  
      /**
       * Set the output directory
       */
      public void setOutputDir(String outdir) {
        this.outdir = outdir;
      }
  
      /**
       * Set where you want the compiler output (messages) to go
       */
      public void setMsgOutput(OutputStream out) {
        this.out = out;
      }
  
      /**
       * Set where you want the compiler output (messages) to go
       */
      public void setOut(OutputStream out) {
          this.out = out;
      }
  
      public boolean compile(String source) {
  	char spr = File.separatorChar;
  	String outputdir = source.substring(0, source.lastIndexOf(spr));
  	String[] args = new String[]
  	{
              "-encoding", encoding,
              "-classpath", classpath,
              "-d", outputdir,
              source
  	};
  
          try {
              Class c = Class.forName("at.dms.kjc.Main");
  
              Constructor cons = c.getConstructor(null);
              Object compiler = cons.newInstance(null);
  
              Method compile = c.getMethod
                  ("run", new Class [] {String.class, PrintWriter.class,
                                        String[].class});
  
              Boolean ok = (Boolean)compile.invoke
                  (compiler, new Object[] {
                      (String)null,
                      new PrintWriter(new OutputStreamWriter(out, encoding)),
                      args});
  
              String packageName = Constants.JSP_PACKAGE_NAME;
              if(packageName != null) {
                  packageName = spr + packageName.replace('.', spr);
              } else {
                  packageName = "";
              }
              String className = source.substring
                  (source.lastIndexOf(spr), source.lastIndexOf(".java")) 
                  + ".class";
              File classFile = new File
                  (outputdir + packageName + spr +  className);
              classFile.renameTo(new File(outputdir + spr + className));
  
              return ok.booleanValue();
          } catch (ClassNotFoundException e) {
  	    try {
  		out.write(":kjc can't find. please check kjc installation.".getBytes());
  	    } catch (Exception e2) {
  	    }
  	    return false;
          } catch (InvocationTargetException ei) {
  	    try {
  		out.write(":maybe kjc setup is invalid. please check gnu.getopt.jar installation.".getBytes());
  	    } catch (Exception e2) {
  	    }
  	    return false;
  	} catch (Exception e){
  	    try {
  		out.write(":unknown error occured while compiling jsp with kjc.".getBytes());
  	    } catch (Exception e2) {
  	    }
  	    return false;
  	}
      }
  
  }
  
  
  

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