jspc.java

低版本的tomcat 对于有些老版本的应用还真的需要老版的中间件

/*
 * $Header: /home/cvs/jakarta-tomcat/src/share/org/apache/jasper/JspC.java,v 1.15.2.4 2001/09/08 20:54:51 marcsaeg Exp $
 * $Revision: 1.15.2.4 $
 * $Date: 2001/09/08 20:54:51 $
 *
 * ====================================================================
 * 
 * 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 [e-mail].
 *
 * 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;

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

import org.apache.jasper.compiler.JspReader;
import org.apache.jasper.compiler.ServletWriter;
import org.apache.jasper.compiler.TagLibraries;
import org.apache.jasper.compiler.Compiler;
import org.apache.jasper.compiler.CommandLineCompiler;

//import org.apache.jasper.runtime.JspLoader;
import org.apache.jasper.servlet.JasperLoader;

import org.apache.tomcat.logging.Logger;
import org.apache.tomcat.logging.TomcatLogger;

/**
 * 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.
 * @author Danno Ferrin
 */
public class JspC implements Options { //, JspCompilationContext {

    public static final String DEFAULT_IE_CLASS_ID = 
            "clsid:8AD9C840-044E-11D1-B3E9-00805F499D93";
    
    public static final String SWITCH_VERBOSE = "-v";
    public static final String SWITCH_QUIET = "-q";
    public static final String SWITCH_OUTPUT_DIR = "-d";
    public static final String SWITCH_OUTPUT_SIMPLE_DIR = "-dd";
    public static final String SWITCH_IE_CLASS_ID = "-ieplugin";
    public static final String SWITCH_PACKAGE_NAME = "-p";
    public static final String SWITCH_CLASS_NAME = "-c";
    public static final String SWITCH_FULL_STOP = "--";
    public static final String SWITCH_URI_BASE = "-uribase";
    public static final String SWITCH_URI_ROOT = "-uriroot";
    public static final String SWITCH_FILE_WEBAPP = "-webapp";
    public static final String SWITCH_WEBAPP_INC = "-webinc";
    public static final String SWITCH_WEBAPP_XML = "-webxml";
    public static final String SWITCH_MAPPED = "-mapped";
    public static final String SWITCH_DIE = "-die";

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

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

    // future direction
    //public static final String SWITCH_XML_OUTPUT = "-xml";
  
    
    boolean largeFile = false;
    boolean mappedFile = false;

    int jspVerbosityLevel = Logger.INFORMATION;

    File scratchDir;

    String ieClassId = DEFAULT_IE_CLASS_ID;

    //String classPath;
    
    String targetPackage;
    
    String targetClassName;

    String uriBase;

    String uriRoot;

    String webxmlFile;

    int webxmlLevel;

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

    //JspLoader loader;

    boolean dirset;

    Vector extensions;

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

    /**
     * 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 boolean getClassDebugInfo() {
        // compile with debug info
        return false;
    }

    public String getIeClassId() {
        return ieClassId;
    }
    
    public int getJspVerbosityLevel() {
        return jspVerbosityLevel;
    }

    public File getScratchDir() {
        return scratchDir;
    }

    //public String getClassPath() {
    //    return classpath;
    //}

    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;
    }

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

    public String getClassPath() {
        return System.getProperty("java.class.path");
    }
    
    int argPos;
    // value set by beutifully obsfucscated java
    boolean fullstop = false;
    String args[];

    private void pushBackArg() {
        if (!fullstop) {
            argPos--;
        }
    }

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

    public JspC(String[] arg, PrintStream log) {
        args = arg;
        String tok;

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

        while ((tok = nextArg()) != null) {
            if (tok.equals(SWITCH_QUIET)) {
                verbosityLevel = Logger.WARNING;
            } else if (tok.equals(SWITCH_VERBOSE)) {
                verbosityLevel = Logger.INFORMATION;
            } else if (tok.startsWith(SWITCH_VERBOSE)) {
                try {
                    verbosityLevel
                     = 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 = nextArg();
                if (tok != null) {
                    scratchDir = new File(new File(tok).getAbsolutePath());
                    dirset = true;
                } 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 = null;
                }
            } else if (tok.equals(SWITCH_OUTPUT_SIMPLE_DIR)) {
                tok = nextArg();
                if (tok != null) {
                    scratchDir = new File(new File(tok).getAbsolutePath());
                } 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 = null;
                }
            } else if (tok.equals(SWITCH_PACKAGE_NAME)) {
                targetPackage = nextArg();
            } else if (tok.equals(SWITCH_CLASS_NAME)) {
                targetClassName = nextArg();
            } else if (tok.equals(SWITCH_URI_BASE)) {
                uriBase = nextArg();
            } else if (tok.equals(SWITCH_URI_ROOT)) {
                uriRoot = nextArg();
            } else if (tok.equals(SWITCH_WEBAPP_INC)) {
                webxmlFile = nextArg();
                if (webxmlFile != null) {
                    webxmlLevel = INC_WEBXML;
                }
            } else if (tok.equals(SWITCH_WEBAPP_XML)) {
                webxmlFile = nextArg();
                if (webxmlFile != null) {
                    webxmlLevel = ALL_WEBXML;
                }
            } else if (tok.equals(SWITCH_MAPPED)) {
                mappedFile = true;
            } else if (tok.startsWith(SWITCH_DIE)) {
                try {
                    dieLevel = Integer.parseInt(
                        tok.substring(SWITCH_DIE.length()));
                } catch (NumberFormatException nfe) {
                    dieLevel = DEFAULT_DIE_LEVEL;
                }
                die = dieLevel;
            } else {
                pushBackArg();
                // Not a recognized Option?  Start treting them as JSP Pages
                break;
            }
        }

        Constants.jasperLog = new TomcatLogger();
        Constants.jasperLog.setVerbosityLevel(verbosityLevel);

    }
    
    public boolean parseFile(PrintStream log, String file, Writer servletout, Writer mappingout)
    {
        try {
            JasperLoader loader =
                    new JasperLoader();
	    loader.setParentClassLoader(getClass().getClassLoader());
	    loader.setOptions( this);
            CommandLineContext clctxt = new CommandLineContext(
                    loader, getClassPath(), file, uriBase, uriRoot, false,
                    this);
            if ((targetClassName != null) && (targetClassName.length() > 0)) {
                clctxt.setServletClassName(targetClassName);
                clctxt.lockClassName();
            }
            if (targetPackage != null) {
                clctxt.setServletPackageName(targetPackage);
                clctxt.lockPackageName();
            }
            if (dirset) {
                clctxt.setOutputInDirs(true);
            }