Back to index...

	/*
	* Copyright (c) 1997, 2013, Oracle and/or its affiliates. All rights reserved.
	* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
	*
	* This code is free software; you can redistribute it and/or modify it
	* under the terms of the GNU General Public License version 2 only, as
	* published by the Free Software Foundation. Oracle designates this
	* particular file as subject to the "Classpath" exception as provided
	* by Oracle in the LICENSE file that accompanied this code.
	*
	* This code is distributed in the hope that it will be useful, but WITHOUT
	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
	* version 2 for more details (a copy is included in the LICENSE file that
	* accompanied this code).
	*
	* You should have received a copy of the GNU General Public License version
	* 2 along with this work; if not, write to the Free Software Foundation,
	* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
	*
	* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
	* or visit www.oracle.com if you need additional information or have any
	* questions.
	*/


	/*
	* The Original Code is HAT. The Initial Developer of the
	* Original Code is Bill Foote, with contributions from others
	* at JavaSoft/Sun.
	*/

	package com.sun.tools.hat.internal.server;

	import java.io.PrintWriter;

	import com.sun.tools.hat.internal.model.*;
	import com.sun.tools.hat.internal.util.Misc;
	import java.io.StringWriter;

	import java.net.URLEncoder;
	import java.io.UnsupportedEncodingException;

	/**
	*
	* @author Bill Foote
	*/


	abstract class QueryHandler {

	protected String urlStart;
	protected String query;
	protected PrintWriter out;
	protected Snapshot snapshot;

	abstract void run();


	void setUrlStart(String s) {
	urlStart = s;
	}

	void setQuery(String s) {
	query = s;
	}

	void setOutput(PrintWriter o) {
	this.out = o;
	}

	void setSnapshot(Snapshot ss) {
	this.snapshot = ss;
	}

	protected String encodeForURL(String s) {
	try {
	s = URLEncoder.encode(s, "UTF-8");
	} catch (UnsupportedEncodingException ex) {
	// Should never happen
	ex.printStackTrace();
	}
	return s;
	}

	protected void startHtml(String title) {
	out.print("<html><title>");
	print(title);
	out.println("</title>");
	out.println("<body bgcolor=\"#ffffff\"><center><h1>");
	print(title);
	out.println("</h1></center>");
	}

	protected void endHtml() {
	out.println("</body></html>");
	}

	protected void error(String msg) {
	println(msg);
	}

	protected void printAnchorStart() {
	out.print("<a href=\"");
	out.print(urlStart);
	}

	protected void printThingAnchorTag(long id) {
	printAnchorStart();
	out.print("object/");
	printHex(id);
	out.print("\">");
	}

	protected void printObject(JavaObject obj) {
	printThing(obj);
	}

	protected void printThing(JavaThing thing) {
	if (thing == null) {
	out.print("null");
	return;
	}
	if (thing instanceof JavaHeapObject) {
	JavaHeapObject ho = (JavaHeapObject) thing;
	long id = ho.getId();
	if (id != -1L) {
	if (ho.isNew())
	out.println("<strong>");
	printThingAnchorTag(id);
	}
	print(thing.toString());
	if (id != -1) {
	if (ho.isNew())
	out.println("[new]</strong>");
	out.print(" (" + ho.getSize() + " bytes)");
	out.println("</a>");
	}
	} else {
	print(thing.toString());
	}
	}

	protected void printRoot(Root root) {
	StackTrace st = root.getStackTrace();
	boolean traceAvailable = (st != null) && (st.getFrames().length != 0);
	if (traceAvailable) {
	printAnchorStart();
	out.print("rootStack/");
	printHex(root.getIndex());
	out.print("\">");
	}
	print(root.getDescription());
	if (traceAvailable) {
	out.print("</a>");
	}
	}

	protected void printClass(JavaClass clazz) {
	if (clazz == null) {
	out.println("null");
	return;
	}
	printAnchorStart();
	out.print("class/");
	print(encodeForURL(clazz));
	out.print("\">");
	print(clazz.toString());
	out.println("</a>");
	}

	protected String encodeForURL(JavaClass clazz) {
	if (clazz.getId() == -1) {
	return encodeForURL(clazz.getName());
	} else {
	return clazz.getIdString();
	}
	}

	protected void printField(JavaField field) {
	print(field.getName() + " (" + field.getSignature() + ")");
	}

	protected void printStatic(JavaStatic member) {
	JavaField f = member.getField();
	printField(f);
	out.print(" : ");
	if (f.hasId()) {
	JavaThing t = member.getValue();
	printThing(t);
	} else {
	print(member.getValue().toString());
	}
	}

	protected void printStackTrace(StackTrace trace) {
	StackFrame[] frames = trace.getFrames();
	for (int i = 0; i < frames.length; i++) {
	StackFrame f = frames[i];
	String clazz = f.getClassName();
	out.print("<font color=purple>");
	print(clazz);
	out.print("</font>");
	print("." + f.getMethodName() + "(" + f.getMethodSignature() + ")");
	out.print(" <bold>:</bold> ");
	print(f.getSourceFileName() + " line " + f.getLineNumber());
	out.println("<br>");
	}
	}

	protected void printException(Throwable t) {
	println(t.getMessage());
	out.println("<pre>");
	StringWriter sw = new StringWriter();
	t.printStackTrace(new PrintWriter(sw));
	print(sw.toString());
	out.println("</pre>");
	}

	protected void printHex(long addr) {
	if (snapshot.getIdentifierSize() == 4) {
	out.print(Misc.toHex((int)addr));
	} else {
	out.print(Misc.toHex(addr));
	}
	}

	protected long parseHex(String value) {
	return Misc.parseHex(value);
	}

	protected void print(String str) {
	out.print(Misc.encodeHtml(str));
	}

	protected void println(String str) {
	out.println(Misc.encodeHtml(str));
	}
	}

Back to index...