📄 attributehtml.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
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package de.fub.bytecode.util;import de.fub.bytecode.classfile.*;import java.io.*;/** * Convert found attributes into HTML file. * * @version $Id: AttributeHTML.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 AttributeHTML implements de.fub.bytecode.Constants {  private String       class_name;     // name of current class  private PrintWriter  file;					// file to write to  private int	       attr_count = 0;  private ConstantHTML constant_html;  private ConstantPool constant_pool;  AttributeHTML(String dir, String class_name, ConstantPool constant_pool,		ConstantHTML constant_html) throws IOException  {    this.class_name    = class_name;    this.constant_pool = constant_pool;    this.constant_html = constant_html;    file = new PrintWriter(new FileOutputStream(dir + class_name + "_attributes.html"));    file.println("<HTML><BODY BGCOLOR=\"#C0C0C0\"><TABLE BORDER=0>");  }                                        private final String codeLink(int link, int method_number) {    return "<A HREF=\"" + class_name + "_code.html#code" +      method_number + "@" + link + "\" TARGET=Code>" +      link + "</A>";  }      final void close() {	    file.println("</TABLE></BODY></HTML>");    file.close();  }  final void writeAttribute(Attribute attribute, String anchor) throws IOException {	    writeAttribute(attribute, anchor, 0);  }  final void writeAttribute(Attribute attribute, String anchor, int method_number) throws IOException {	    byte         tag = attribute.getTag();    int        index;     if(tag == ATTR_UNKNOWN) // Don't know what to do about this one      return;    attr_count++; // Increment number of attributes found so far    if(attr_count % 2 == 0)      file.print("<TR BGCOLOR=\"#C0C0C0\"><TD>");    else      file.print("<TR BGCOLOR=\"#A0A0A0\"><TD>");    file.println("<H4><A NAME=\"" + anchor + "\">" + attr_count + " " + ATTRIBUTE_NAMES[tag] + "</A></H4>");    /* Handle different attributes     */    switch(tag) {    case ATTR_CODE:      Code        c          = (Code)attribute;      Attribute[] attributes = c.getAttributes();      // Some directly printable values      file.print("<UL><LI>Maximum stack size = " + c.getMaxStack() + 		 "</LI>\n<LI>Number of local variables = " + 		 c.getMaxLocals() + "</LI>\n<LI><A HREF=\"" + class_name +		 "_code.html#method" + method_number + "\" TARGET=Code>Byte code</A></LI></UL>\n");      // Get handled exceptions and list them      CodeException[] ce  = c.getExceptionTable();      int             len = ce.length;      if(len > 0) {	file.print("<P><B>Exceptions handled</B><UL>");	for(int i=0; i < len; i++) {	  int catch_type = ce[i].getCatchType(); // Index in constant pool		  file.print("<LI>");	  if(catch_type != 0)	    file.print(constant_html.referenceConstant(catch_type)); // Create Link to _cp.html	  else	    file.print("Any Exception");	  file.print("<BR>(Ranging from lines " + codeLink(ce[i].getStartPC(), method_number) +		     " to " + codeLink(ce[i].getEndPC(), method_number) + ", handled at line " + 		     codeLink(ce[i].getHandlerPC(), method_number) + ")</LI>");	}	file.print("</UL>");      }      break;    case ATTR_CONSTANT_VALUE:      index = ((ConstantValue)attribute).getConstantValueIndex();      // Reference _cp.html      file.print("<UL><LI><A HREF=\"" + class_name + "_cp.html#cp" + index + 		 "\" TARGET=\"ConstantPool\">Constant value index(" + index +")</A></UL>\n");      break;    case ATTR_SOURCE_FILE:      index = ((SourceFile)attribute).getSourceFileIndex();      // Reference _cp.html      file.print("<UL><LI><A HREF=\"" + class_name + "_cp.html#cp" + index + 		 "\" TARGET=\"ConstantPool\">Source file index(" + index +")</A></UL>\n");      break;	      case ATTR_EXCEPTIONS:      // List thrown exceptions      int[] indices = ((ExceptionTable)attribute).getExceptionIndexTable();      file.print("<UL>");      for(int i=0; i < indices.length; i++)	file.print("<LI><A HREF=\"" + class_name + "_cp.html#cp" + indices[i] +		   "\" TARGET=\"ConstantPool\">Exception class index(" + indices[i] + ")</A>\n");      file.print("</UL>\n");      break;    case ATTR_LINE_NUMBER_TABLE:      LineNumber[] line_numbers =((LineNumberTable)attribute).getLineNumberTable();      // List line number pairs      file.print("<P>");      for(int i=0; i < line_numbers.length; i++) {	file.print("(" + line_numbers[i].getStartPC() + ",&nbsp;" + line_numbers[i].getLineNumber() + ")");	if(i < line_numbers.length - 1)	  file.print(", "); // breakable      }      break;    case ATTR_LOCAL_VARIABLE_TABLE:      LocalVariable[] vars = ((LocalVariableTable)attribute).getLocalVariableTable();      // List name, range and type      file.print("<UL>");      for(int i=0; i < vars.length; i++) {	index = vars[i].getSignatureIndex();	String signature = ((ConstantUtf8)constant_pool.getConstant(index, CONSTANT_Utf8)).getBytes();	signature = Utility.signatureToString(signature, false);	int  start = vars[i].getStartPC();	int  end   = (start + vars[i].getLength());	file.println("<LI>" + Class2HTML.referenceType(signature) +		     "&nbsp;<B>" + vars[i].getName() + "</B> in slot %" + vars[i].getIndex() +		     "<BR>Valid from lines " +		     "<A HREF=\"" + class_name + "_code.html#code" + method_number + "@" + start + "\" TARGET=Code>" +		     start + "</A> to " +		     "<A HREF=\"" + class_name + "_code.html#code" + method_number + "@" + end + "\" TARGET=Code>" +		     end + "</A></LI>");      }      file.print("</UL>\n");      break;    case ATTR_INNER_CLASSES:      InnerClass[] classes = ((InnerClasses)attribute).getInnerClasses();      // List inner classes      file.print("<UL>");      for(int i=0; i < classes.length; i++) {	String name, access;		index = classes[i].getInnerNameIndex();	if(index > 0)	  name =((ConstantUtf8)constant_pool.getConstant(index, CONSTANT_Utf8)).getBytes();	else	  name = "&lt;anonymous&gt;";	access = Utility.accessToString(classes[i].getInnerAccessFlags());	file.print("<LI><FONT COLOR=\"#FF0000\">" + access + "</FONT> "+		   constant_html.referenceConstant(classes[i].getInnerClassIndex()) +		   " in&nbsp;class " + 		   constant_html.referenceConstant(classes[i].getOuterClassIndex()) +		   " named " + name + "</LI>\n");      }      file.print("</UL>\n");      break;    default: // Such as Unknown attribute or Deprecated      file.print("<P>" + attribute.toString());    }    file.println("</TD></TR>");    file.flush();  }                  }
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