/* * Copyright (c) 1997, 2008, 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.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) {        out.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;        }        String name = clazz.getName();        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 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));    }}