costin 01/06/12 08:35:13
Added: jasper34/liaison/org/apache/jasper34/liaison ClassName.java
ManglerOld.java
Log:
A third mangler to choose from - the "original" mangler using class hack.
It's a cool idea, I'll try to preserve it as a general util, but very likely
will not be used any more ( the JspLoader is too complex ).
Revision Changes Path
1.1
jakarta-tomcat-jasper/jasper34/liaison/org/apache/jasper34/liaison/ClassName.java
Index: ClassName.java
===================================================================
/*
* ====================================================================
*
* 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 [EMAIL PROTECTED]
*
* 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.jasper34.liaison;
import org.apache.jasper34.core.*;
import org.apache.jasper34.generator.*;
import org.apache.jasper34.runtime.JasperException;
import java.io.DataInputStream;
import java.io.FileInputStream;
import java.io.InputStream;
import java.io.IOException;
/**
* Parse a .class file to figure out the name of the class from which
* it was generated.
*
* Used by the old mangler
*
* @author Anil Vijendran
*/
public class ClassName {
static String processClassData(InputStream in) throws JasperException,
IOException {
DataInputStream din = new DataInputStream(in);
din.readInt(); // magic
din.readUnsignedShort(); // majorVersion
din.readUnsignedShort(); // minorVersion
int count = din.readUnsignedShort(); // #constant pool entries
ConstantPool[] constantPool = new ConstantPool[count];
constantPool[0] = new ConstantPool();
for (int i = 1; i < constantPool.length; i++) {
constantPool[i] = new ConstantPool();
if (!constantPool[i].read(din))
throw new
JasperException(ContainerLiaison.getString("jsp.error.classname"));
// These two types take up "two" spots in the table
if ((constantPool[i].type == ConstantPool.LONG) ||
(constantPool[i].type == ConstantPool.DOUBLE))
i++;
}
for (int i = 1; i < constantPool.length; i++) {
if (constantPool[i] == null)
continue;
if (constantPool[i].index1 > 0)
constantPool[i].arg1 = constantPool[constantPool[i].index1];
if (constantPool[i].index2 > 0)
constantPool[i].arg2 = constantPool[constantPool[i].index2];
}
int accessFlags = din.readUnsignedShort();
ConstantPool thisClass = constantPool[din.readUnsignedShort()];
din.close();
return printClassName(thisClass.arg1.strValue);
}
private static String printClassName(String s) {
StringBuffer x;
if (s.charAt(0) == '[') {
return(typeString(s, ""));
}
x = new StringBuffer();
for (int j = 0; j < s.length(); j++) {
if (s.charAt(j) == '/')
x.append('.');
else
x.append(s.charAt(j));
}
return (x.toString());
}
private static String typeString(String typeString, String varName) {
int isArray = 0;
int ndx = 0;
StringBuffer x = new StringBuffer();
while (typeString.charAt(ndx) == '[') {
isArray++;
ndx++;
}
switch (typeString.charAt(ndx)) {
case 'B' :
x.append("byte ");
break;
case 'C' :
x.append("char ");
break;
case 'D' :
x.append("double ");
break;
case 'F' :
x.append("float ");
break;
case 'I' :
x.append("int ");
break;
case 'J' :
x.append("long ");
break;
case 'L' :
for (int i = ndx+1; i < typeString.indexOf(';'); i++) {
if (typeString.charAt(i) != '/')
x.append(typeString.charAt(i));
else
x.append('.');
}
x.append(" ");
break;
case 'V':
x.append("void ");
break;
case 'S' :
x.append("short ");
break;
case 'Z' :
x.append("boolean ");
break;
}
x.append(varName);
while (isArray > 0) {
x.append("[]");
isArray--;
}
return (x.toString());
}
public static String getClassName(String classFile) throws JasperException {
try {
// System.out.println("Getting class name from class data");
FileInputStream fin = new FileInputStream(classFile);
return processClassData(fin);
} catch (IOException ex) {
throw new
JasperException(ContainerLiaison.getString("jsp.error.classname"),
ex);
}
}
public static void main(String[] args) {
try {
for(int i = 0; i < args.length; i++)
System.out.println("Filename: "+ args[i]+" Classname:
"+getClassName(args[i]));
} catch (Exception ex) {
ex.printStackTrace(); // OK
}
}
}
class ConstantPool {
int type; // type of this item
String name; // String for the type
ConstantPool arg1; // index to first argument
ConstantPool arg2; // index to second argument
int index1, index2;
String strValue; // ASCIZ String value
int intValue;
long longValue;
float floatValue;
double doubleValue;
public static final int CLASS = 7;
public static final int FIELDREF = 9;
public static final int METHODREF = 10;
public static final int STRING = 8;
public static final int INTEGER = 3;
public static final int FLOAT = 4;
public static final int LONG = 5;
public static final int DOUBLE = 6;
public static final int INTERFACE = 11;
public static final int NAMEANDTYPE = 12;
public static final int ASCIZ = 1;
public static final int UNICODE = 2;
/**
* Generic constructor
*/
public ConstantPool() {
index1 = -1;
index2 = -1;
arg1 = null;
arg2 = null;
type = -1;
}
public boolean read(DataInputStream din)
throws IOException {
int len;
char c;
type = din.readByte();
switch (type) {
case CLASS:
name = "Class";
index1 = din.readUnsignedShort();
index2 = -1;
break;
case FIELDREF:
name = "Field Reference";
index1 = din.readUnsignedShort();
index2 = din.readUnsignedShort();
break;
case METHODREF:
name = "Method Reference";
index1 = din.readUnsignedShort();
index2 = din.readUnsignedShort();
break;
case INTERFACE:
name = "Interface Method Reference";
index1 = din.readUnsignedShort();
index2 = din.readUnsignedShort();
break;
case NAMEANDTYPE:
name = "Name and Type";
index1 = din.readUnsignedShort();
index2 = din.readUnsignedShort();
break;
case STRING:
name = "String";
index1 = din.readUnsignedShort();
index2 = -1;
break;
case INTEGER:
name = "Integer";
intValue = din.readInt();
break;
case FLOAT:
name = "Float";
floatValue = din.readFloat();
break;
case LONG:
name = "Long";
longValue = din.readLong();
break;
case DOUBLE:
name = "Double";
doubleValue = din.readDouble();
break;
case ASCIZ:
case UNICODE:
if (type == ASCIZ)
name = "ASCIZ";
else
name = "UNICODE";
StringBuffer xxBuf = new StringBuffer();
len = din.readUnsignedShort();
while (len > 0) {
c = (char) (din.readByte());
xxBuf.append(c);
len--;
}
strValue = xxBuf.toString();
break;
default:
System.err.println(ContainerLiaison.getString("jsp.warning.bad.type"));
}
return (true);
}
}
1.1
jakarta-tomcat-jasper/jasper34/liaison/org/apache/jasper34/liaison/ManglerOld.java
Index: ManglerOld.java
===================================================================
/*
* 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 [EMAIL PROTECTED]
*
* 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.jasper34.liaison;
import java.io.File;
import java.io.FileNotFoundException;
import org.apache.jasper34.core.*;
import org.apache.jasper34.generator.*;
import org.apache.jasper34.jsptree.*;
import org.apache.jasper34.core.Compiler;
import org.apache.jasper34.runtime.JasperException;
import org.apache.tomcat.util.log.*;
/**
* This is the original "funky code mangling and code generation scheme".
*
* @author Anil K. Vijendran
*/
public class ManglerOld extends Mangler {
String pkgName, javaFileName, classFileName;
String realClassName;
File jsp;
String outputDir;
// ClassFileData cfd;
boolean outDated;
static final int JSP_TOKEN_LEN= Constants.JSP_TOKEN.length();
Log loghelper = Log.getLog("JASPER_LOG", "JspCompiler");
public ManglerOld()
{
}
public void init( String jspFile, String outputDir ) {
this.jsp=new File( jspFile );
this.outputDir = outputDir;
generateNewClassName();
}
private void generateNewClassName() {
File classFile = new File(getClassFileName());
if (! classFile.exists()) {
String prefix = getPrefix(jsp.getPath());
realClassName= prefix + getBaseClassName() +
Constants.JSP_TOKEN + "0";
return;
}
String cn=getRealClassName();
String baseClassName = cn.
substring(0, cn.lastIndexOf(Constants.JSP_TOKEN));
int jspTokenIdx=cn.lastIndexOf(Constants.JSP_TOKEN);
String versionS=cn.substring(jspTokenIdx + JSP_TOKEN_LEN,
cn.length());
int number= Integer.valueOf(versionS).intValue();
number++;
realClassName = baseClassName + Constants.JSP_TOKEN + number;
}
/** Return the real class name for the JSP, including package and
* version.
*
* This method is called when the server is started and a .class file
* is found from a previous compile or when the .class file is older,
* to find next version.
*/
public final String getRealClassName() {
if( realClassName!=null ) return realClassName;
try {
realClassName = ClassName.getClassName( getClassFileName() );
} catch( JasperException ex) {
// ops, getClassName should throw something
loghelper.log("Exception in getRealClassName", ex);
return null;
}
return realClassName;
}
public final String getClassName() {
// CFD gives you the whole class name
// This method returns just the class name sans the package
String cn=getRealClassName();
int lastDot = cn.lastIndexOf('.');
String className=null;
if (lastDot != -1)
className = cn.substring(lastDot+1,
cn.length());
else // no package name case
className = cn;
return className;
}
public final String getJavaFileName() {
if( javaFileName!=null ) return javaFileName;
javaFileName = getClassName() + ".java";
if (outputDir != null && !outputDir.equals(""))
javaFileName = outputDir + File.separatorChar + javaFileName;
return javaFileName;
}
public final String getClassFileName() {
if( classFileName!=null) return classFileName;
// computeClassFileName();
String prefix = getPrefix(jsp.getPath());
classFileName = prefix + getBaseClassName() + ".class";
if (outputDir != null && !outputDir.equals(""))
classFileName = outputDir + File.separatorChar + classFileName;
return classFileName;
}
public static String [] keywords = {
"abstract", "boolean", "break", "byte",
"case", "catch", "char", "class",
"const", "continue", "default", "do",
"double", "else", "extends", "final",
"finally", "float", "for", "goto",
"if", "implements", "import",
"instanceof", "int", "interface",
"long", "native", "new", "package",
"private", "protected", "public",
"return", "short", "static", "super",
"switch", "synchronized", "this",
"throw", "throws", "transient",
"try", "void", "volatile", "while"
};
public final String getPackageName() {
if( pkgName!=null) return pkgName;
// compute package name
String pathName = jsp.getPath();
StringBuffer modifiedpkgName = new StringBuffer ();
int indexOfSepChar = pathName.lastIndexOf(File.separatorChar);
if (indexOfSepChar == -1 || indexOfSepChar == 0)
pkgName = null;
else {
for (int i = 0; i < keywords.length; i++) {
char fs = File.separatorChar;
int index1 = pathName.indexOf(fs + keywords[i]);
int index2 = pathName.indexOf(keywords[i]);
if (index1 == -1 && index2 == -1) continue;
int index = (index2 == -1) ? index1 : index2;
while (index != -1) {
String tmpathName = pathName.substring (0,index+1) + '%';
pathName = tmpathName + pathName.substring (index+2);
index = pathName.indexOf(fs + keywords[i]);
}
}
// XXX fix for paths containing '.'.
// Need to be more elegant here.
pathName = pathName.replace('.','_');
pkgName = pathName.substring(0, pathName.lastIndexOf(
File.separatorChar)).replace(File.separatorChar, '.');
for (int i=0; i<pkgName.length(); i++)
if (Character.isLetter(pkgName.charAt(i)) == true ||
pkgName.charAt(i) == '.') {
modifiedpkgName.append(pkgName.substring(i,i+1));
}
else
modifiedpkgName.append(mangleChar(pkgName.charAt(i)));
if (modifiedpkgName.charAt(0) == '.') {
String modifiedpkgNameString = modifiedpkgName.toString();
pkgName = modifiedpkgNameString.
substring(1,
modifiedpkgName.length ());
}
else
pkgName = modifiedpkgName.toString();
}
return pkgName;
}
private final String getBaseClassName() {
String className;
if (jsp.getName().endsWith(".jsp"))
className = jsp.getName().substring(0, jsp.getName().length() - 4);
else
className = jsp.getName();
// Fix for invalid characters. If you think of more add to the list.
StringBuffer modifiedClassName = new StringBuffer();
for (int i = 0; i < className.length(); i++) {
if (Character.isLetterOrDigit(className.charAt(i)) == true)
modifiedClassName.append(className.substring(i,i+1));
else
modifiedClassName.append(mangleChar(className.charAt(i)));
}
return modifiedClassName.toString();
}
private final String getPrefix(String pathName) {
if (pathName != null) {
StringBuffer modifiedName = new StringBuffer();
for (int i = 0; i < pathName.length(); i++) {
if (Character.isLetter(pathName.charAt(i)) == true)
modifiedName.append(pathName.substring(i,i+1));
else
modifiedName.append(mangleChar(pathName.charAt(i)));
}
return modifiedName.toString();
}
else
return "";
}
private static final String mangleChar(char ch) {
if(ch == File.separatorChar) {
ch = '/';
}
String s = Integer.toHexString(ch);
int nzeros = 5 - s.length();
char[] result = new char[6];
result[0] = '_';
for (int i = 1; i <= nzeros; i++)
result[i] = '0';
for (int i = nzeros+1, j = 0; i < 6; i++, j++)
result[i] = s.charAt(j);
return new String(result);
}
}
