📄 constanthtml.java

📁 代码是一个分类器的实现,其中使用了部分weka的源代码。可以将项目导入eclipse运行
💻 JAVA
字号:
package de.fub.bytecode.util;import de.fub.bytecode.classfile.*;import java.io.*;/** * Convert constant pool into HTML file. * * @version $Id: ConstantHTML.java,v 1.2 2001/05/09 09:26:57 dahm Exp $ * @author  <A HREF="http://www.berlin.de/~markus.dahm/">M. Dahm</A> *  */final class ConstantHTML implements de.fub.bytecode.Constants {  private String 	class_name;     // name of current class  private String 	class_package;  // name of package  private ConstantPool 	constant_pool;  // reference to constant pool  private PrintWriter	file;		// file to write to  private String[]  	constant_ref;	// String to return for cp[i]  private Constant[]	constants;	// The constants in the cp  private Method[]      methods;  ConstantHTML(String dir, String class_name, String class_package, Method[] methods,	       ConstantPool constant_pool) throws IOException  {    this.class_name   	= class_name;    this.class_package	= class_package;    this.constant_pool	= constant_pool;    this.methods        = methods;    constants		= constant_pool.getConstantPool();    file 		= new PrintWriter(new FileOutputStream(dir + class_name + "_cp.html"));    constant_ref	= new String[constants.length];    constant_ref[0]     = "&lt;unknown&gt;";        file.println("<HTML><BODY BGCOLOR=\"#C0C0C0\"><TABLE BORDER=0>");        // Loop through constants, constants[0] is reserved    for(int i=1; i < constants.length; i++) {      if(i % 2 == 0)	file.print("<TR BGCOLOR=\"#C0C0C0\"><TD>");      else	file.print("<TR BGCOLOR=\"#A0A0A0\"><TD>");      if(constants[i] != null)	writeConstant(i);            file.print("</TD></TR>\n");    }		    file.println("</TABLE></BODY></HTML>");    file.close();  }  String referenceConstant(int index) {    return constant_ref[index];  }      private void writeConstant(int index) {    byte   tag = constants[index].getTag();    int    class_index, name_index;    String ref;		    // The header is always the same    file.println("<H4> <A NAME=cp" + index + ">" + index + "</A> " + CONSTANT_NAMES[tag] + "</H4>");    /* For every constant type get the needed parameters and print them appropiately      */    switch(tag) {    case CONSTANT_InterfaceMethodref:    case CONSTANT_Methodref:      // Get class_index and name_and_type_index, depending on type      if(tag == CONSTANT_Methodref) {	ConstantMethodref c = (ConstantMethodref)constant_pool.getConstant(index, CONSTANT_Methodref);	class_index = c.getClassIndex();	name_index  = c.getNameAndTypeIndex();      }      else {	ConstantInterfaceMethodref c1 = (ConstantInterfaceMethodref)constant_pool.getConstant(index, CONSTANT_InterfaceMethodref);	class_index = c1.getClassIndex();	name_index  = c1.getNameAndTypeIndex();      }      // Get method name and its class      String method_name	= constant_pool.constantToString(name_index, CONSTANT_NameAndType);      String html_method_name = Class2HTML.toHTML(method_name);	        // Partially compacted class name, i.e., / -> .      String method_class = constant_pool.constantToString(class_index, CONSTANT_Class);      String short_method_class 	= Utility.compactClassName(method_class); // I.e., remove java.lang.      short_method_class = Utility.compactClassName(method_class); // I.e., remove java.lang.      short_method_class = Utility.compactClassName(short_method_class, class_package + ".", true); // Remove class package prefix      // Get method signature      ConstantNameAndType c2 = (ConstantNameAndType)constant_pool.getConstant(name_index, CONSTANT_NameAndType);      String signature = constant_pool.constantToString(c2.getSignatureIndex(), CONSTANT_Utf8);      // Get array of strings containing the argument types      String[] args = Utility.methodSignatureArgumentTypes(signature, false);			      // Get return type string      String type = Utility.methodSignatureReturnType(signature, false);      String ret_type = Class2HTML.referenceType(type);      StringBuffer buf = new StringBuffer("(");      for(int i=0; i < args.length; i++) {	buf.append(Class2HTML.referenceType(args[i]));	if(i < args.length - 1)	  buf.append(",&nbsp;");      }			      buf.append(")");      String arg_types = buf.toString();			      if(method_class.equals(class_name)) // Method is local to class	ref = "<A HREF=\"" + class_name + "_code.html#method" + getMethodNumber(method_name + signature) +	  "\" TARGET=Code>" + html_method_name + "</A>";      else	ref = "<A HREF=\"" + method_class + ".html" + "\" TARGET=_top>" + short_method_class +	  "</A>." + html_method_name;      constant_ref[index] = ret_type + "&nbsp;<A HREF=\"" + class_name + "_cp.html#cp" + class_index +	"\" TARGET=Constants>" +	short_method_class + "</A>.<A HREF=\"" + class_name + "_cp.html#cp" +	index +	"\" TARGET=ConstantPool>" + html_method_name + "</A>&nbsp;" + arg_types;      file.println("<P><TT>" + ret_type + "&nbsp;" + ref + arg_types + "&nbsp;</TT>\n<UL>" +		   "<LI><A HREF=\"#cp" + class_index + "\">Class index(" + class_index +	")</A>\n" +		   "<LI><A HREF=\"#cp" + name_index + "\">NameAndType index(" + name_index + ")</A></UL>");      break;    case CONSTANT_Fieldref:      // Get class_index and name_and_type_index      ConstantFieldref c3 = (ConstantFieldref)constant_pool.getConstant(index, CONSTANT_Fieldref);      class_index = c3.getClassIndex();      name_index  = c3.getNameAndTypeIndex();      // Get method name and its class (compacted)      String field_class = constant_pool.constantToString(class_index, CONSTANT_Class);      String short_field_class = Utility.compactClassName(field_class); // I.e., remove java.lang.      short_field_class = Utility.compactClassName(short_field_class, class_package + ".", true); // Remove class package prefix      String field_name  = constant_pool.constantToString(name_index, CONSTANT_NameAndType);      if(field_class.equals(class_name)) // Field is local to class	ref = "<A HREF=\"" + field_class + "_methods.html#field" + 	  field_name + "\" TARGET=Methods>" + field_name + "</A>";      else	ref = "<A HREF=\"" + field_class + ".html\" TARGET=_top>" +	  short_field_class + "</A>." + field_name + "\n";      constant_ref[index] = "<A HREF=\"" + class_name + "_cp.html#cp" + class_index +	"\" TARGET=Constants>" +	short_field_class + "</A>.<A HREF=\"" + class_name + "_cp.html#cp" +	index +	"\" TARGET=ConstantPool>" + field_name + "</A>"; 												      file.println("<P><TT>" + ref + "</TT><BR>\n" + "<UL>" +		   "<LI><A HREF=\"#cp" + class_index + "\">Class(" + class_index +	")</A><BR>\n" +		   "<LI><A HREF=\"#cp" + name_index + "\">NameAndType(" + name_index + ")</A></UL>");      break;	  		    case CONSTANT_Class:      ConstantClass c4 = (ConstantClass)constant_pool.getConstant(index, CONSTANT_Class);      name_index  = c4.getNameIndex();      String class_name2  = constant_pool.constantToString(index, tag); // / -> .      String short_class_name = Utility.compactClassName(class_name2); // I.e., remove java.lang.      short_class_name = Utility.compactClassName(short_class_name, class_package + ".", true); // Remove class package prefix      ref = "<A HREF=\"" + class_name2 + ".html\" TARGET=_top>" + short_class_name + "</A>";      constant_ref[index] = "<A HREF=\"" + class_name + "_cp.html#cp" + index +	"\" TARGET=ConstantPool>" + short_class_name + "</A>";											      file.println("<P><TT>" + ref + "</TT><UL>" +		   "<LI><A HREF=\"#cp" + name_index + "\">Name index(" + name_index + 	")</A></UL>\n");      break;	    case CONSTANT_String:      ConstantString c5 = (ConstantString)constant_pool.getConstant(index, CONSTANT_String);      name_index = c5.getStringIndex();      String str = Class2HTML.toHTML(constant_pool.constantToString(index, tag));        file.println("<P><TT>" + str + "</TT><UL>" + 		   "<LI><A HREF=\"#cp" + name_index + "\">Name index(" + name_index +	")</A></UL>\n");      break;	    case CONSTANT_NameAndType:      ConstantNameAndType c6 = (ConstantNameAndType)constant_pool.getConstant(index, CONSTANT_NameAndType);      name_index = c6.getNameIndex();      int signature_index = c6.getSignatureIndex();      file.println("<P><TT>" + Class2HTML.toHTML(constant_pool.constantToString(index, tag)) + "</TT><UL>" +		   "<LI><A HREF=\"#cp" + name_index + "\">Name index(" + name_index + ")</A>\n" +		   "<LI><A HREF=\"#cp" + signature_index + "\">Signature index(" + 		   signature_index + ")</A></UL>\n");      break;    default:      file.println("<P><TT>" + Class2HTML.toHTML(constant_pool.constantToString(index, tag)) + "</TT>\n");    } // switch  }  private final int getMethodNumber(String str) {    for(int i=0; i < methods.length; i++) {      String cmp = methods[i].getName() + methods[i].getSignature();      if(cmp.equals(str))	return i;    }    return -1;  }}
⌨️ 快捷键说明

复制代码 Ctrl + C
搜索代码 Ctrl + F
全屏模式 F11
切换主题 Ctrl + Shift + D
显示快捷键 ?
增大字号 Ctrl + =
减小字号 Ctrl + -