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    1
    2   package org.apache.bcel.util;
    3
    4   /* ====================================================================
    5    * The Apache Software License, Version 1.1
    6    *
    7    * Copyright (c) 2001 The Apache Software Foundation.  All rights
    8    * reserved.
    9    *
    10   * Redistribution and use in source and binary forms, with or without
    11   * modification, are permitted provided that the following conditions
    12   * are met:
    13   *
    14   * 1. Redistributions of source code must retain the above copyright
    15   *    notice, this list of conditions and the following disclaimer.
    16   *
    17   * 2. Redistributions in binary form must reproduce the above copyright
    18   *    notice, this list of conditions and the following disclaimer in
    19   *    the documentation and/or other materials provided with the
    20   *    distribution.
    21   *
    22   * 3. The end-user documentation included with the redistribution,
    23   *    if any, must include the following acknowledgment:
    24   *       "This product includes software developed by the
    25   *        Apache Software Foundation (http://www.apache.org/)."
    26   *    Alternately, this acknowledgment may appear in the software itself,
    27   *    if and wherever such third-party acknowledgments normally appear.
    28   *
    29   * 4. The names "Apache" and "Apache Software Foundation" and
    30   *    "Apache BCEL" must not be used to endorse or promote products
    31   *    derived from this software without prior written permission. For
    32   *    written permission, please contact apache@apache.org.
    33   *
    34   * 5. Products derived from this software may not be called "Apache",
    35   *    "Apache BCEL", nor may "Apache" appear in their name, without
    36   *    prior written permission of the Apache Software Foundation.
    37   *
    38   * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
    39   * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
    40   * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
    41   * DISCLAIMED.  IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
    42   * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
    43   * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
    44   * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
    45   * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
    46   * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
    47   * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
    48   * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
    49   * SUCH DAMAGE.
    50   * ====================================================================
    51   *
    52   * This software consists of voluntary contributions made by many
    53   * individuals on behalf of the Apache Software Foundation.  For more
    54   * information on the Apache Software Foundation, please see
    55   * <http://www.apache.org/>;.
    56   */
    57
    58  import org.apache.bcel.classfile.*;
    59  import java.io.*;
    60
    61  /***
    62   * Convert constant pool into HTML file.
    63   *
    64   * @version $Id: ConstantHTML.java,v 1.1.1.1 2001/10/29 20:00:30 jvanzyl Exp $
    65   * @author  <A HREF="mailto:markus.dahm@berlin.de">M. Dahm</A>
    66   *
    67   */
    68  final class ConstantHTML implements org.apache.bcel.Constants {
    69    private String 	class_name;     // name of current class
    70    private String 	class_package/package-summary.html">b> String 	class_package;  // name of package
    71    private ConstantPool 	constant_pool;  // reference to constant pool
    72    private PrintWriter	file;		// file to write to
    73    private String[]  	constant_ref;	// String to return for cp[i]
    74    private Constant[]	constants;	// The constants in the cp
    75    private Method[]      methods;
    76
    77    ConstantHTML(String dir, String class_name, String class_package, Method[] methods,/package-summary.html">ConstantHTML(String dir, String class_name, String class_package, Method[] methods,
    78  	       ConstantPool constant_pool) throws IOException
    79    {
    80      this.class_name   	= class_name;
    81      this.class_package	= class_package/package-summary.html">b>	= class_package;
    82      this.constant_pool	= constant_pool;
    83      this.methods        = methods;
    84      constants		= constant_pool.getConstantPool();
    85      file 		= new PrintWriter(new FileOutputStream(dir + class_name + "_cp.html"));
    86      constant_ref	= new String[constants.length];
    87      constant_ref[0]     = "<unknown>";
    88
    89      file.println("<HTML><BODY BGCOLOR=\"#C0C0C0\"><TABLE BORDER=0>");
    90
    91      // Loop through constants, constants[0] is reserved
    92      for(int i=1; i < constants.length; i++) {
    93        if(i % 2 == 0)
    94  	file.print("<TR BGCOLOR=\"#C0C0C0\"><TD>");
    95        else
    96  	file.print("<TR BGCOLOR=\"#A0A0A0\"><TD>");
    97
    98        if(constants[i] != null)
    99  	writeConstant(i);
    100
    101       file.print("</TD></TR>\n");
    102     }
    103
    104     file.println("</TABLE></BODY></HTML>");
    105     file.close();
    106   }
    107
    108   String referenceConstant(int index) {
    109     return constant_ref[index];
    110   }
    111
    112   private void writeConstant(int index) {
    113     byte   tag = constants[index].getTag();
    114     int    class_index, name_index;
    115     String ref;
    116
    117     // The header is always the same
    118     file.println("<H4> <A NAME=cp" + index + ">" + index + "</A> " + CONSTANT_NAMES[tag] + "</H4>");
    119
    120     /* For every constant type get the needed parameters and print them appropiately
    121      */
    122     switch(tag) {
    123     case CONSTANT_InterfaceMethodref:
    124     case CONSTANT_Methodref:
    125       // Get class_index and name_and_type_index, depending on type
    126       if(tag == CONSTANT_Methodref) {
    127 	ConstantMethodref c = (ConstantMethodref)constant_pool.getConstant(index, CONSTANT_Methodref);
    128 	class_index = c.getClassIndex();
    129 	name_index  = c.getNameAndTypeIndex();
    130       }
    131       else {
    132 	ConstantInterfaceMethodref c1 = (ConstantInterfaceMethodref)constant_pool.getConstant(index, CONSTANT_InterfaceMethodref);
    133 	class_index = c1.getClassIndex();
    134 	name_index  = c1.getNameAndTypeIndex();
    135       }
    136
    137       // Get method name and its class
    138       String method_name	= constant_pool.constantToString(name_index, CONSTANT_NameAndType);
    139       String html_method_name = Class2HTML.toHTML(method_name);
    140
    141       // Partially compacted class name, i.e., / -> .
    142       String method_class = constant_pool.constantToString(class_index, CONSTANT_Class);
    143       String short_method_class 	= Utility.compactClassName(method_class); // I.e., remove java.lang.
    144       short_method_class = Utility.compactClassName(method_class); // I.e., remove java.lang.
    145       short_method_class = Utility.compactClassName(short_method_class, class_package + ".", true); // Remove class package prefix
    146
    147       // Get method signature
    148       ConstantNameAndType c2 = (ConstantNameAndType)constant_pool.getConstant(name_index, CONSTANT_NameAndType);
    149       String signature = constant_pool.constantToString(c2.getSignatureIndex(), CONSTANT_Utf8);
    150       // Get array of strings containing the argument types
    151       String[] args = Utility.methodSignatureArgumentTypes(signature, false);
    152
    153       // Get return type string
    154       String type = Utility.methodSignatureReturnType(signature, false);
    155       String ret_type = Class2HTML.referenceType(type);
    156
    157       StringBuffer buf = new StringBuffer("(");
    158       for(int i=0; i < args.length; i++) {
    159 	buf.append(Class2HTML.referenceType(args[i]));
    160 	if(i < args.length - 1)
    161 	  buf.append(", ");
    162       }
    163       buf.append(")");
    164
    165       String arg_types = buf.toString();
    166
    167       if(method_class.equals(class_name)) // Method is local to class
    168 	ref = "<A HREF=\"" + class_name + "_code.html#method" + getMethodNumber(method_name + signature) +
    169 	  "\" TARGET=Code>" + html_method_name + "</A>";
    170       else
    171 	ref = "<A HREF=\"" + method_class + ".html" + "\" TARGET=_top>" + short_method_class +
    172 	  "</A>." + html_method_name;
    173
    174       constant_ref[index] = ret_type + " <A HREF=\"" + class_name + "_cp.html#cp" + class_index +
    175 	"\" TARGET=Constants>" +
    176 	short_method_class + "</A>.<A HREF=\"" + class_name + "_cp.html#cp" +
    177 	index +	"\" TARGET=ConstantPool>" + html_method_name + "</A> " + arg_types;
    178
    179       file.println("<P><TT>" + ret_type + " " + ref + arg_types + " </TT>\n<UL>" +
    180 		   "<LI><A HREF=\"#cp" + class_index + "\">Class index(" + class_index +	")</A>\n" +
    181 		   "<LI><A HREF=\"#cp" + name_index + "\">NameAndType index(" + name_index + ")</A></UL>");
    182       break;
    183
    184     case CONSTANT_Fieldref:
    185       // Get class_index and name_and_type_index
    186       ConstantFieldref c3 = (ConstantFieldref)constant_pool.getConstant(index, CONSTANT_Fieldref);
    187       class_index = c3.getClassIndex();
    188       name_index  = c3.getNameAndTypeIndex();
    189
    190       // Get method name and its class (compacted)
    191       String field_class = constant_pool.constantToString(class_index, CONSTANT_Class);
    192       String short_field_class = Utility.compactClassName(field_class); // I.e., remove java.lang.
    193       short_field_class = Utility.compactClassName(short_field_class, class_package + ".", true); // Remove class package prefix
    194
    195       String field_name  = constant_pool.constantToString(name_index, CONSTANT_NameAndType);
    196
    197       if(field_class.equals(class_name)) // Field is local to class
    198 	ref = "<A HREF=\"" + field_class + "_methods.html#field" +
    199 	  field_name + "\" TARGET=Methods>" + field_name + "</A>";
    200       else
    201 	ref = "<A HREF=\"" + field_class + ".html\" TARGET=_top>" +
    202 	  short_field_class + "</A>." + field_name + "\n";
    203
    204       constant_ref[index] = "<A HREF=\"" + class_name + "_cp.html#cp" + class_index +	"\" TARGET=Constants>" +
    205 	short_field_class + "</A>.<A HREF=\"" + class_name + "_cp.html#cp" +
    206 	index +	"\" TARGET=ConstantPool>" + field_name + "</A>";
    207
    208       file.println("<P><TT>" + ref + "</TT><BR>\n" + "<UL>" +
    209 		   "<LI><A HREF=\"#cp" + class_index + "\">Class(" + class_index +	")</A><BR>\n" +
    210 		   "<LI><A HREF=\"#cp" + name_index + "\">NameAndType(" + name_index + ")</A></UL>");
    211       break;
    212
    213     case CONSTANT_Class:
    214       ConstantClass c4 = (ConstantClass)constant_pool.getConstant(index, CONSTANT_Class);
    215       name_index  = c4.getNameIndex();
    216       String class_name2  = constant_pool.constantToString(index, tag); // / -> .
    217       String short_class_name = Utility.compactClassName(class_name2); // I.e., remove java.lang.
    218       short_class>_name = Utility.compactClassName(short_class_name, class_package + ".", true); // Remove class package prefix
    219
    220       ref = "<A HREF=\"" + class_name2 + ".html\" TARGET=_top>" + short_class_name + "</A>";
    221       constant_ref[index] = "<A HREF=\"" + class_name + "_cp.html#cp" + index +
    222 	"\" TARGET=ConstantPool>" + short_class_name + "</A>";
    223
    224       file.println("<P><TT>" + ref + "</TT><UL>" +
    225 		   "<LI><A HREF=\"#cp" + name_index + "\">Name index(" + name_index + 	")</A></UL>\n");
    226       break;
    227
    228     case CONSTANT_String:
    229       ConstantString c5 = (ConstantString)constant_pool.getConstant(index, CONSTANT_String);
    230       name_index = c5.getStringIndex();
    231
    232       String str = Class2HTML.toHTML(constant_pool.constantToString(index, tag));
    233
    234       file.println("<P><TT>" + str + "</TT><UL>" +
    235 		   "<LI><A HREF=\"#cp" + name_index + "\">Name index(" + name_index +	")</A></UL>\n");
    236       break;
    237
    238     case CONSTANT_NameAndType:
    239       ConstantNameAndType c6 = (ConstantNameAndType)constant_pool.getConstant(index, CONSTANT_NameAndType);
    240       name_index = c6.getNameIndex();
    241       int signature_index = c6.getSignatureIndex();
    242
    243       file.println("<P><TT>" + Class2HTML.toHTML(constant_pool.constantToString(index, tag)) + "</TT><UL>" +
    244 		   "<LI><A HREF=\"#cp" + name_index + "\">Name index(" + name_index + ")</A>\n" +
    245 		   "<LI><A HREF=\"#cp" + signature_index + "\">Signature index(" +
    246 		   signature_index + ")</A></UL>\n");
    247       break;
    248
    249     default:
    250       file.println("<P><TT>" + Class2HTML.toHTML(constant_pool.constantToString(index, tag)) + "</TT>\n");
    251     } // switch
    252   }
    253
    254   private final int getMethodNumber(String str) {
    255     for(int i=0; i < methods.length; i++) {
    256       String cmp = methods[i].getName() + methods[i].getSignature();
    257       if(cmp.equals(str))
    258 	return i;
    259     }
    260     return -1;
    261   }
    262 }

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