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Subject: JspC enhancement
Date: Wed, 27 Nov 2002 14:45:39 -0800
Message-ID: 
 <FF657657D9572E4880D73B644ACE91D88D5A24@plsrv07.corp.againtech.com>
Thread-Topic: cvs commit:
 jakarta-tomcat-catalina/catalina/src/share/org/apache/catalina/coreStandardValveContext.java
 ApplicationFilterChain.java ApplicationFilterFactory.javaDummyRequest.java
 StandardPipeline.java StandardWrapperValve.java
Thread-Index: AcKWT+blhfcPzlH6Sia3C2iWDf0EDAAAXZ2w
From: "Brent Jenkins" <Brent.Jenkins@motiva.com>
To: "Tomcat Developers List" <tomcat-dev@jakarta.apache.org>

Hi,

I'd like to propose a change to org.apache.jasper.JspC in Tomcat4.1.12.  =
Specifically, I'd like to introduce a new command line argument:
"-pp" to apply a package name prefix and create the package name based =
on the jsp directory structure.  Tomcat4's "-p" option applies the =
package name prefix, but creates all the jsps in the same package.  This =
leads to "duplicate class" problems if two jsps in different directories =
share the same name.

BACKGROUND:
Our company used to use JspC in Tomcat3 to precompile our JSPs for =
deployment.  Tomcat3 JspC used to generate package names for the JSPs =
that were based on the directory structure of the jsp directory.  We've =
recently moved to Tomcat4, and this feature apparently didn't carry over =
to Tomcat4 codeline. =20

EXAMPLE:
Given a directory structure of:=20
/jsp/index.jsp=20
/jsp/employee/index.jsp=20


Tomcat3 using JspC like this:
java org.apache.jasper.JspC -d . -p foo.bar=20

would yield package and class names of:
package foo.bar.jsp;
public class index extends HttpJspBase

package foo.bar.jsp.employee;
public class index extends HttpJspBase


Tomcat4 using JspC like this:
java org.apache.jasper.JspC -d . -p foo.bar=20

would yield package and class names of:
package foo.bar;=20
public class index_jsp extends HttpJspBase=20

package foo.bar;=20
public class index_jsp extends HttpJspBase=20

We'd get a duplicate class definition error here.  Thus....


Tomcat4 using my proposed JspC like this:
java org.apache.jasper.JspC -d . -pp foo.bar=20

would yield package and class names of:
package foo.bar.jsp;=20
public class index_jsp extends HttpJspBase=20

package foo.bar.jsp.employee;=20
public class index_jsp extends HttpJspBase=20


I'd love to get this committed to the tomcat4 sources.  Any suggestions? =
 I've included the code at the end of the email.

Sincerely,
Brent Jenkins


/*
 * $Header: =
/home/cvs/jakarta-tomcat-jasper/jasper2/src/share/org/apache/jasper/JspC.=
java,v 1.12.2.1 2002/08/21 17:54:24 kinman Exp $
 * $Revision: 1.12.2.1 $
 * $Date: 2002/08/21 17:54:24 $
 *
 * =
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
 *
 * 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.
 * =
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
 *
 * 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;

import java.io.*;
import java.net.*;
import java.util.*;

import org.apache.jasper.compiler.JspReader;
import org.apache.jasper.compiler.ServletWriter;
import org.apache.jasper.compiler.Compiler;
import org.apache.jasper.compiler.TldLocationsCache;

import org.apache.jasper.servlet.JasperLoader;
import org.apache.jasper.servlet.JspCServletContext;

import org.apache.jasper.logging.Logger;
import org.apache.jasper.logging.JasperLogger;

/**
 * Shell for the jspc compiler.  Handles all options associated with the
 * command line and creates compilation contexts which it then compiles
 * according to the specified options.
 *
 * This version can process files from a _single_ webapp at once, i.e.
 * a single docbase can be specified.
 *
 * It can be used as a Ant task using:
 <pre>
     &lt;taskdef classname=3D"org.apache.jasper.JspC" name=3D"jasper2" =
&gt;
        &lt;classpath&gt;
            &lt;pathelement =
location=3D"${java.home}/../lib/tools.jar"/&gt;
            &lt;fileset dir=3D"${ENV.CATALINA_HOME}/server/lib"&gt;
                &lt;include name=3D"*.jar"/&gt;
            &lt;/fileset&gt;
            &lt;fileset dir=3D"${ENV.CATALINA_HOME}/common/lib"&gt;
                &lt;include name=3D"*.jar"/&gt;
            &lt;/fileset&gt;
            &lt;path refid=3D"myjars"/&gt;
         &lt;/classpath&gt;
    &lt;/taskdef&gt;

    &lt;jasper2 verbose=3D"0"
             package=3D"my.package"
             uriroot=3D"${webapps.dir}/${webapp.name}"
             webXmlFragment=3D"${build.dir}/generated_web.xml"
             =
outputDir=3D"${webapp.dir}/${webapp.name}/WEB-INF/src/my/package" /&gt;
 </pre>
 *
 * @author Danno Ferrin
 * @author Pierre Delisle
 * @author Costin Manolache
 */
public class JspC implements Options {

    public static final String DEFAULT_IE_CLASS_ID =3D
            "clsid:8AD9C840-044E-11D1-B3E9-00805F499D93";

    public static final String SWITCH_VERBOSE =3D "-v";
    public static final String SWITCH_QUIET =3D "-q";
    public static final String SWITCH_OUTPUT_DIR =3D "-d";
    public static final String SWITCH_OUTPUT_SIMPLE_DIR =3D "-dd";
    public static final String SWITCH_IE_CLASS_ID =3D "-ieplugin";
    public static final String SWITCH_PACKAGE_NAME =3D "-p";
    public static final String SWITCH_PACKAGE_PREFIX_NAME =3D "-pp";
    public static final String SWITCH_CLASS_NAME =3D "-c";
    public static final String SWITCH_FULL_STOP =3D "--";
    public static final String SWITCH_COMPILE =3D "--compile";
    public static final String SWITCH_URI_BASE =3D "-uribase";
    public static final String SWITCH_URI_ROOT =3D "-uriroot";
    public static final String SWITCH_FILE_WEBAPP =3D "-webapp";
    public static final String SWITCH_WEBAPP_INC =3D "-webinc";
    public static final String SWITCH_WEBAPP_XML =3D "-webxml";
    public static final String SWITCH_MAPPED =3D "-mapped";
    public static final String SWITCH_DIE =3D "-die";
    public static final String SHOW_SUCCESS =3D"-s";
    public static final String LIST_ERRORS =3D "-l";

    public static final int NO_WEBXML =3D 0;
    public static final int INC_WEBXML =3D 10;
    public static final int ALL_WEBXML =3D 20;

    public static final int DEFAULT_DIE_LEVEL =3D 1;
    public static final int NO_DIE_LEVEL =3D 0;


    String classPath=3Dnull;
    URLClassLoader loader=3Dnull;

    // future direction
    //public static final String SWITCH_XML_OUTPUT =3D "-xml";


    boolean largeFile =3D false;
    boolean mappedFile =3D false;

    int jspVerbosityLevel =3D Logger.INFORMATION;

    File scratchDir;

    String ieClassId =3D DEFAULT_IE_CLASS_ID;

    String targetPackage;

    String targetPackagePrefix;

    String targetClassName;

    String uriBase;

    String uriRoot;

    int dieLevel;
    boolean dieOnExit =3D false;
    static int die; // I realize it is duplication, but this is for
                    // the static main catch

    boolean compile=3Dfalse;
    String compiler=3Dnull;

    boolean dirset;

    boolean classDebugInfo=3Dtrue;

    Vector extensions;

    Vector pages =3D new Vector();

    // Generation of web.xml fragments
    String webxmlFile;
    int webxmlLevel;
    Writer mapout;
    CharArrayWriter servletout;
    CharArrayWriter mappingout;

    static PrintStream log;

    JspCServletContext context;

    /**
     * Cache for the TLD locations
     */
    private TldLocationsCache tldLocationsCache =3D null;

    private boolean listErrors =3D false;
    private boolean showSuccess =3D false;

    public boolean getKeepGenerated() {
        // isn't this why we are running jspc?
        return true;
    }

    public boolean getLargeFile() {
        return largeFile;
    }

    public boolean isPoolingEnabled() {
        return true;
    }

    /**
     * Are we supporting HTML mapped servlets?
     */
    public boolean getMappedFile() {
		return mappedFile;
    }

    // Off-line compiler, no need for security manager
    public Object getProtectionDomain() {
	return null;
    }

    public boolean getSendErrorToClient() {
        // implied send to System.err
        return true;
    }

    public void setClassDebugInfo( boolean b ) {
        classDebugInfo=3Db;
    }

    public boolean getClassDebugInfo() {
        // compile with debug info
        return classDebugInfo;
    }

    /**
     * Background compilation check intervals in seconds
     */
    public int getCheckInterval() {
        return 300;
    }

    /**
     * Is Jasper being used in development mode?
     */
    public boolean getDevelopment() {
        return false;
    }

    /**
     * JSP reloading check ?
     */
    public boolean getReloading() {
        return true;
    }

    public String getIeClassId() {
        return ieClassId;
    }

    public int getJspVerbosityLevel() {
        return jspVerbosityLevel;
    }

    public File getScratchDir() {
        return scratchDir;
    }

    public Class getJspCompilerPlugin() {
       // we don't compile, so this is meanlingless
        return null;
    }

    public String getJspCompilerPath() {
       // we don't compile, so this is meanlingless
        return null;
    }

    /**
     * Compiler to use.
     */
    public String getCompiler() {
        return compiler;
    }

    public void setCompiler(String c) {
        compiler=3Dc;
    }


    public TldLocationsCache getTldLocationsCache() {
	return tldLocationsCache;
    }

    public String getJavaEncoding() {
	return "UTF-8";
    }

    public String getClassPath() {
        if( classPath !=3D null )
            return classPath;
        return System.getProperty("java.class.path");
    }

    public JspC() {
        Constants.jasperLog =3D new JasperLogger();
    }

    // -------------------- Options --------------------
    public void setClassPath(String s) {
        classPath=3Ds;
    }

    /** Base dir for the webapp. Used to generate class names and
     *  resolve includes
     */
    public void setUriroot( String s ) {
        if( s=3D=3Dnull ) {
            uriRoot=3Ds;
            return;
        }
        try {
            uriRoot=3Dnew File( s ).getCanonicalPath();
        } catch( Exception ex ) {
            uriRoot=3Ds;
        }
    }

    public void setVerbose( int level ) {
        Constants.jasperLog.setVerbosityLevel(level);
    }

    public void setCompile( boolean b ) {
        compile=3Db;
    }

    public void setValidateXml( boolean b ) {
        org.apache.jasper.xmlparser.ParserUtils.validating=3Db;
    }

    public void setOutputDir( String s ) {
        if( s!=3D null ) {
            scratchDir=3Dnew File(new File(s).getAbsolutePath());
            dirset=3Dtrue;
        } else {
            scratchDir=3Dnull;
        }
    }

    public void setPackage( String p ) {
        targetPackage=3Dp;
    }

    public void setPackagePrefix( String pp ) {
        targetPackagePrefix=3Dpp;
    }

    /** Class name of the generated file ( without package ).
     *  Can only be used if a single file is converted.
     *  XXX Do we need this feature ?
     */
    public void setClassName( String p ) {
        targetClassName=3Dp;
    }

    /** File where we generate a web.xml fragment with the class =
definitions.
     */
    public void setWebXmlFragment( String s ) {
        webxmlFile=3Ds;
        webxmlLevel=3DINC_WEBXML;
    }

    /**
     * Resolve relative path, and create output directories.
     */
    void setupContext(JspCompilationContext clctxt) {
        // set up a scratch/output dir if none is provided
        if (scratchDir =3D=3D null) {
            String temp =3D System.getProperty("java.io.tempdir");
            if (temp =3D=3D null) {
                temp =3D "";
            }
            scratchDir =3D new File(new File(temp).getAbsolutePath());
        }

        String outputDir =3D scratchDir.getAbsolutePath();

        if (dirset) {
            int indexOfSlash =3D clctxt.getJspFile().lastIndexOf('/');

            /* String pathName =3D "";
            if (indexOfSlash !=3D -1) {
                pathName =3D clctxt.getJspFile().substring(0, =
indexOfSlash);
            } */
            String tmpDir =3D outputDir + File.separatorChar; // + =
pathName;
            File f =3D new File(tmpDir);
            if (!f.exists()) {
                f.mkdirs();
            }
        }
        clctxt.setOutputDir( outputDir );
    }

    void initClassLoader( JspCompilationContext clctxt ) throws =
IOException {
        classPath =3D getClassPath();

        ClassLoader parent=3Dthis.getClass().getClassLoader();

        ArrayList urls =3D new ArrayList();
        File webappBase=3Dnew File(uriRoot);

        if( parent instanceof URLClassLoader ) {
            URLClassLoader uL=3D(URLClassLoader) parent;
            URL path[]=3DuL.getURLs();
            for( int i=3D0; i<path.length; i++ ) {
                urls.add( path[i] );
                classPath =3D classPath + File.pathSeparator +
                    path[i].getFile();
            }
        }

        if( parent instanceof org.apache.tools.ant.AntClassLoader ) {
            classPath=3D classPath + File.pathSeparator +
                =
((org.apache.tools.ant.AntClassLoader)parent).getClasspath();
        }

        // Turn the classPath in URLs
        StringTokenizer tokenizer =3D new StringTokenizer(classPath, =
File.pathSeparator);
        while (tokenizer.hasMoreTokens()) {
            String path =3D tokenizer.nextToken();
            try {
                File libFile =3D new File(path);
                urls.add(libFile.toURL());
            } catch (IOException ioe) {
                // Failing a toCanonicalPath on a file that
                // exists() should be a JVM regression test,
                // therefore we have permission to freak uot
                throw new RuntimeException(ioe.toString());
            }
        }

        if (webappBase.exists()) {
            File classes =3D new File(webappBase, "/WEB-INF/classes");
            try {
                if (classes.exists()) {
                    classPath =3D classPath + File.pathSeparator
                        + classes.getCanonicalPath();
                    urls.add(classes.getCanonicalFile().toURL());
                }
            } catch (IOException ioe) {
                // failing a toCanonicalPath on a file that
                // exists() should be a JVM regression test,
                // therefore we have permission to freak out
                throw new RuntimeException(ioe.toString());
            }
            File lib =3D new File(webappBase, "/WEB-INF/lib");
            if (lib.exists() && lib.isDirectory()) {
                String[] libs =3D lib.list();
                for (int i =3D 0; i < libs.length; i++) {
                    if( libs[i].length() <5 ) continue;
                    String ext=3Dlibs[i].substring( libs[i].length() - 4 =
);
                    if( ! ".jar".equalsIgnoreCase( ext )) {
                        System.out.println("XXX bad jar " + libs[i]);
                        continue;
                    }
                    try {
                        File libFile =3D new File(lib, libs[i]);
                        classPath =3D classPath + File.pathSeparator
                            + libFile.getCanonicalPath();
                        urls.add(libFile.getCanonicalFile().toURL());
                    } catch (IOException ioe) {
                        // failing a toCanonicalPath on a file that
                        // exists() should be a JVM regression test,
                        // therefore we have permission to freak out
                        throw new RuntimeException(ioe.toString());
                    }
                }
            }
        }

        // What is this ??
        urls.add(new =
File(clctxt.getRealPath("/")).getCanonicalFile().toURL());

        URL urlsA[]=3Dnew URL[urls.size()];
        urls.toArray(urlsA);
        loader =3D new URLClassLoader(urlsA, =
this.getClass().getClassLoader());
    }

    public void generateWebMapping( String file, JspCompilationContext =
clctxt )
        throws IOException
    {
        String className =3D clctxt.getServletClassName();
        String packageName =3D clctxt.getServletPackageName();

        String thisServletName;
        if  ("".equals(packageName)) {
            thisServletName =3D className;
        } else {
            thisServletName =3D packageName + '.' + className;
        }

        if (servletout !=3D null) {
            servletout.write("\n\t<servlet>\n\t\t<servlet-name>");
            servletout.write(thisServletName);
            servletout.write("</servlet-name>\n\t\t<servlet-class>");
            servletout.write(thisServletName);
            servletout.write("</servlet-class>\n\t</servlet>\n");
        }
        if (mappingout !=3D null) {
            =
mappingout.write("\n\t<servlet-mapping>\n\t\t<servlet-name>");
            mappingout.write(thisServletName);
            mappingout.write("</servlet-name>\n\t\t<url-pattern>");
            mappingout.write(file.replace('\\', '/'));
            mappingout.write("</url-pattern>\n\t</servlet-mapping>\n");

        }
    }

    public boolean processFile(String file)
        throws JasperException
    {
        try {
            String jspUri=3Dfile.replace('\\','/');
            String baseDir =3D scratchDir.getCanonicalPath();
            this.setOutputDir( baseDir + jspUri.substring( 0, =
jspUri.lastIndexOf( '/' ) ) );
            JspCompilationContext clctxt =3D new JspCompilationContext
                ( jspUri, false,  this, context, null, null );

            /* Override the defaults */
            if ((targetClassName !=3D null) && (targetClassName.length() =
> 0)) {
                clctxt.setServletClassName(targetClassName);
                targetClassName =3D null;
            }
            if (targetPackage !=3D null) {
                clctxt.setServletPackageName(targetPackage);
            }
            if (targetPackagePrefix !=3D null) {
                // change the directory name to a package name
                String fullPackage =3D file.replace('\\','.');
                // strip out nasty chars
                fullPackage =3D fullPackage.replace('-','_');
                fullPackage =3D fullPackage.substring(0, =
fullPackage.lastIndexOf('.'));
                fullPackage =3D fullPackage.substring(0, =
fullPackage.lastIndexOf('.'));
                if ( showSuccess ) {
                    log.println( "Building in package: " + =
(targetPackagePrefix + fullPackage) );
                }
                clctxt.setServletPackageName(targetPackagePrefix + =
fullPackage);
            }

            setupContext(clctxt);

            if( loader=3D=3Dnull )
                initClassLoader( clctxt );

            clctxt.setClassLoader(loader);
            clctxt.setClassPath(classPath);

            Compiler clc =3D clctxt.createCompiler();
            this.setOutputDir( baseDir );

            if( compile ) {
                // Generate both .class and .java
                if( clc.isOutDated() ) {
                    clc.compile();
                }
            } else {
                // Only generate .java, compilation is separated
                // Don't compile if the .class file is newer than the =
.jsp file
                if( clc.isOutDated(false) ) {
                    clc.generateJava();
                }
            }

            // Generate mapping
            generateWebMapping( file, clctxt );
            if ( showSuccess ) {
                log.println( "Built File: " + file );
            }
            return true;
        } catch (FileNotFoundException fne) {
            Constants.message("jspc.error.fileDoesNotExist",
                              new Object[] {fne.getMessage()}, =
Logger.WARNING);
            throw new JasperException( fne );
        } catch (Exception e) {
            Constants.message("jspc.error.generalException",
                    new Object[] {file, e}, Logger.ERROR);
            if ( listErrors ) {
	        log.println( "Error in File: " + file );
		return true;
            } else if (dieLevel !=3D NO_DIE_LEVEL) {
                dieOnExit =3D true;
            }
            throw new JasperException( e );
        }
    }

    /** Find the WEB-INF dir by looking up in the directory tree.
     *  This is used if no explicit docbase is set, but only files.
     *  XXX Maybe we should require the docbase.
     */
    private void locateUriRoot( File f ) {
        String tUriBase =3D uriBase;
        if (tUriBase =3D=3D null) {
            tUriBase =3D "/";
        }
        try {
            if (f.exists()) {
                f =3D new File(f.getCanonicalPath());
                while (f !=3D null) {
                    File g =3D new File(f, "WEB-INF");
                    if (g.exists() && g.isDirectory()) {
                        uriRoot =3D f.getCanonicalPath();
                        uriBase =3D tUriBase;
                        Constants.message("jspc.implicit.uriRoot",
                                          new Object[] { uriRoot },
                                              Logger.INFORMATION);
                        break;
                    }
                    if (f.exists() && f.isDirectory()) {
                        tUriBase =3D "/" + f.getName() + "/" + tUriBase;
                    }

                    String fParent =3D f.getParent();
                    if (fParent =3D=3D null) {
                        f =3D new File(args[argPos]);
                        fParent =3D f.getParent();
                        if (fParent =3D=3D null) {
                            fParent =3D File.separator;
                        }
                        uriRoot =3D new =
File(fParent).getCanonicalPath();
                        uriBase =3D "/";
                        break;
                    } else {
                        f =3D new File(fParent);
                    }

                    // If there is no acceptible candidate, uriRoot will
                    // remain null to indicate to the CompilerContext to
                    // use the current working/user dir.
                }

                try {
                    File froot =3D new File(uriRoot);
                    uriRoot =3D froot.getCanonicalPath();
                } catch (IOException ioe) {
                    // if we cannot get the base, leave it null
                }
            }
        } catch (IOException ioe) {
            // since this is an optional default and a null value
            // for uriRoot has a non-error meaning, we can just
            // pass straight through
        }
    }

    /** Locate all jsp files in the webapp. Used if no explicit
     *  jsps are specified.
     */
    public void scanFiles( File base ) {
        Stack dirs =3D new Stack();
        dirs.push(base);
        if (extensions =3D=3D null) {
            extensions =3D new Vector();
            extensions.addElement("jsp");
        }
        while (!dirs.isEmpty()) {
            String s =3D dirs.pop().toString();
            //System.out.println("--" + s);
            File f =3D new File(s);
            if (f.exists() && f.isDirectory()) {
                String[] files =3D f.list();
                String ext;
                for (int i =3D 0; i < files.length; i++) {
                    File f2 =3D new File(s, files[i]);
                    //System.out.println(":" + f2.getPath());
                    if (f2.isDirectory()) {
                        dirs.push(f2.getPath());
                        //System.out.println("++" + f2.getPath());
                    } else {
                        ext =3D files[i].substring(
                                                 =
files[i].lastIndexOf('.') + 1);
                        if (extensions.contains(ext)) {
                            //System.out.println(s + "?" + files[i]);
                            pages.addElement(
                                             s + File.separatorChar + =
files[i]);
                        } else {
                                    //System.out.println("not done:" + =
ext);
                        }
                    }
                }
            }
        }
    }

    private void initWebXml() {
        try {
            if (webxmlLevel >=3D INC_WEBXML) {
                File fmapings =3D new File(webxmlFile);
                mapout =3D new FileWriter(fmapings);
                servletout =3D new CharArrayWriter();
                mappingout =3D new CharArrayWriter();
            } else {
                mapout =3D null;
                servletout =3D null;
                mappingout =3D null;
            }
            if (webxmlLevel >=3D ALL_WEBXML) {
                mapout.write(Constants.getString("jspc.webxml.header"));
            } else if (webxmlLevel>=3D INC_WEBXML) {
                mapout.write(Constants.getString("jspc.webinc.header"));
            }
        } catch (IOException ioe) {
            mapout =3D null;
            servletout =3D null;
            mappingout =3D null;
        }
    }

    private void completeWebXml() {
        if (mapout !=3D null) {
            try {
                servletout.writeTo(mapout);
                mappingout.writeTo(mapout);
                if (webxmlLevel >=3D ALL_WEBXML) {
                    =
mapout.write(Constants.getString("jspc.webxml.footer"));
                } else if (webxmlLevel >=3D INC_WEBXML) {
                    =
mapout.write(Constants.getString("jspc.webinc.footer"));
                }
                mapout.close();
            } catch (IOException ioe) {
                // noting to do if it fails since we are done with it
            }
        }
    }

    private void initServletContext() {
        try {
            context =3Dnew JspCServletContext
                (new PrintWriter(System.out),
                 new URL("file:" + uriRoot.replace('\\','/') + '/'));
            tldLocationsCache =3D new
                TldLocationsCache(context);
        } catch (MalformedURLException me) {
            System.out.println("**" + me);
        }
    }


    public void execute()  throws JasperException {

        if( uriRoot=3D=3Dnull ) {
            if( pages.size() =3D=3D 0 ) {
                throw new JasperException( "No uriRoot or files");
            }
            String firstJsp=3D(String)pages.elementAt( 0 );
            locateUriRoot( new File( firstJsp ) );
        }

        // No explicit page, we'll process all .jsp in the webapp
        if( pages.size() =3D=3D 0 ) {
            scanFiles( new File( uriRoot ));
        }

        File uriRootF =3D new File(uriRoot);
        if (!uriRootF.exists() || !uriRootF.isDirectory()) {
            throw new =
JasperException(Constants.getString("jsp.error.jspc.uriroot_not_dir"));
        }

        if( context=3D=3Dnull )
            initServletContext();

        initWebXml();

        Enumeration e =3D pages.elements();
        while (e.hasMoreElements()) {
            String nextjsp =3D e.nextElement().toString();
            try {
                File fjsp =3D new File(nextjsp);
                if (!fjsp.exists()) {
                    Constants.message("jspc.error.fileDoesNotExist",
                                      new Object[] {fjsp}, =
Logger.WARNING);
                    continue;
                }
                String s =3D fjsp.getCanonicalPath();
                //System.out.println("**" + s);
                if (s.startsWith(uriRoot)) {
                    nextjsp =3D s.substring(uriRoot.length());
                }
            } catch (IOException ioe) {
                // if we got problems dont change the file name
            }

            if (nextjsp.startsWith("." + File.separatorChar)) {
                nextjsp =3D nextjsp.substring(2);
            }

            processFile(nextjsp);
        }

        completeWebXml();
    }


    // =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D CLI =
support =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D

    int argPos;
    // value set by beutifully obsfucscated java
    boolean fullstop =3D false;
    String args[];

    public static void main(String arg[]) {
        if (arg.length =3D=3D 0) {
           System.out.println(Constants.getString("jspc.usage"));
        } else {
            try {
                log=3DSystem.out;
                JspC jspc =3D new JspC();
                jspc.setArgs(arg);
                jspc.execute();
            } catch (JasperException je) {
                System.err.print("error:");
                System.err.println(je.getMessage());
                if (die !=3D NO_DIE_LEVEL) {
                    System.exit(die);
                }
            }
        }
    }

    private String nextArg() {
        if ((argPos >=3D args.length)
            || (fullstop =3D SWITCH_FULL_STOP.equals(args[argPos]))) {
            return null;
        } else {
            return args[argPos++];
        }
    }

    private String nextFile() {
        if (fullstop) argPos++;
        if (argPos >=3D args.length) {
            return null;
        } else {
            return args[argPos++];
        }
    }

    void setArgs(String[] arg) {
        args =3D arg;
        String tok;

        int verbosityLevel =3D Logger.WARNING;
        dieLevel =3D NO_DIE_LEVEL;
        die =3D dieLevel;

        while ((tok =3D nextArg()) !=3D null) {
            if (tok.equals(SWITCH_QUIET)) {
                verbosityLevel =3D Logger.WARNING;
            } else if (tok.equals(SWITCH_VERBOSE)) {
                verbosityLevel =3D Logger.INFORMATION;
            } else if (tok.startsWith(SWITCH_VERBOSE)) {
                try {
                    verbosityLevel
                     =3D =
Integer.parseInt(tok.substring(SWITCH_VERBOSE.length()));
                } catch (NumberFormatException nfe) {
                    log.println(
                        "Verbosity level "
                        + tok.substring(SWITCH_VERBOSE.length())
                        + " is not valid.  Option ignored.");
                }
            } else if (tok.equals(SWITCH_OUTPUT_DIR)) {
                tok =3D nextArg();
                setOutputDir( tok );
            } else if (tok.equals(SWITCH_OUTPUT_SIMPLE_DIR)) {
                tok =3D nextArg();
                if (tok !=3D null) {
                    scratchDir =3D new File(new =
File(tok).getAbsolutePath());
                    dirset =3D false;
                } else {
                    // either an in-java call with an explicit null
                    // or a "-d --" sequence should cause this,
                    // which would mean default handling
                    /* no-op */
                    scratchDir =3D null;
                }
            } else if (tok.equals(SWITCH_PACKAGE_NAME)) {
                targetPackage =3D nextArg();
            } else if (tok.equals(SWITCH_PACKAGE_PREFIX_NAME)) {
                targetPackagePrefix =3D nextArg();
            } else if (tok.equals(SWITCH_COMPILE)) {
                compile=3Dtrue;
            } else if (tok.equals(SWITCH_CLASS_NAME)) {
                targetClassName =3D nextArg();
            } else if (tok.equals(SWITCH_URI_BASE)) {
                uriBase=3DnextArg();
            } else if (tok.equals(SWITCH_URI_ROOT)) {
                setUriroot( nextArg());
            } else if (tok.equals(SWITCH_FILE_WEBAPP)) {
                setUriroot( nextArg());
            } else if ( tok.equals( SHOW_SUCCESS ) ) {
                showSuccess =3D true;
            } else if ( tok.equals( LIST_ERRORS ) ) {
                listErrors =3D true;
            } else if (tok.equals(SWITCH_WEBAPP_INC)) {
                webxmlFile =3D nextArg();
                if (webxmlFile !=3D null) {
                    webxmlLevel =3D INC_WEBXML;
                }
            } else if (tok.equals(SWITCH_WEBAPP_XML)) {
                webxmlFile =3D nextArg();
                if (webxmlFile !=3D null) {
                    webxmlLevel =3D ALL_WEBXML;
                }
            } else if (tok.equals(SWITCH_MAPPED)) {
                mappedFile =3D true;
            } else if (tok.startsWith(SWITCH_DIE)) {
                try {
                    dieLevel =3D Integer.parseInt(
                        tok.substring(SWITCH_DIE.length()));
                } catch (NumberFormatException nfe) {
                    dieLevel =3D DEFAULT_DIE_LEVEL;
                }
                die =3D dieLevel;
            } else {
                //pushBackArg();
                if (!fullstop) {
                    argPos--;
                }
                // Not a recognized Option?  Start treting them as JSP =
Pages
                break;
            }
        }

        // Add all extra arguments to the list of files
        while( true ) {
            String file =3D nextFile();
            if( file=3D=3Dnull ) break;
            pages.addElement( file );
        }

        Constants.jasperLog.setVerbosityLevel(verbosityLevel);
    }

    /**
     * allows user to set where the log goes other than System.out
     * @param log
     */
    public static void setLog( PrintStream log ) {
	    JspC.log =3D log;
    }

}

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