Mercurial > jdk8-mips64-public > langtools / file revision

 /*

  * Copyright (c) 1998, 2012, 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.

  */

 package com.sun.tools.doclets.formats.html;

 import java.io.*;

 import java.text.SimpleDateFormat;

 import java.util.*;

 import com.sun.javadoc.*;

 import com.sun.tools.doclets.formats.html.markup.*;

 import com.sun.tools.doclets.internal.toolkit.*;

 import com.sun.tools.doclets.internal.toolkit.taglets.*;

 import com.sun.tools.doclets.internal.toolkit.util.*;

 /**

  * Class for the Html Format Code Generation specific to JavaDoc.

  * This Class contains methods related to the Html Code Generation which

  * are used extensively while generating the entire documentation.

  *

  *  <p><b>This is NOT part of any supported API.

  *  If you write code that depends on this, you do so at your own risk.

  *  This code and its internal interfaces are subject to change or

  *  deletion without notice.</b>

  *

  * @since 1.2

  * @author Atul M Dambalkar

  * @author Robert Field

  * @author Bhavesh Patel (Modified)

  */

 public class HtmlDocletWriter extends HtmlDocWriter {

     /**

      * Relative path from the file getting generated to the destination

      * directory. For example, if the file getting generated is

      * "java/lang/Object.html", then the relative path string is "../../".

      * This string can be empty if the file getting generated is in

      * the destination directory.

      */

     public String relativePath = "";

     /**

      * Same as relativepath, but normalized to never be empty or

      * end with a slash.

      */

     public String relativepathNoSlash = "";

     /**

      * Platform-dependent directory path from the current or the

      * destination directory to the file getting generated.

      * Used when creating the file.

      * For example, if the file getting generated is

      * "java/lang/Object.html", then the path string is "java/lang".

      */

     public String path = "";

     /**

      * Name of the file getting generated. If the file getting generated is

      * "java/lang/Object.html", then the filename is "Object.html".

      */

     public String filename = "";

     /**

      * The display length used for indentation while generating the class page.

      */

     public int displayLength = 0;

     /**

      * The global configuration information for this run.

      */

     public ConfigurationImpl configuration;

     /**

      * To check whether annotation heading is printed or not.

      */

     protected boolean printedAnnotationHeading = false;

     /**

      * Constructor to construct the HtmlStandardWriter object.

      *

      * @param filename File to be generated.

      */

     public HtmlDocletWriter(ConfigurationImpl configuration,

                               String filename) throws IOException {

         super(configuration, filename);

         this.configuration = configuration;

         this.filename = filename;

     }

     /**

      * Constructor to construct the HtmlStandardWriter object.

      *

      * @param path         Platform-dependent {@link #path} used when

      *                     creating file.

      * @param filename     Name of file to be generated.

      * @param relativePath Value for the variable {@link #relativePath}.

      */

     public HtmlDocletWriter(ConfigurationImpl configuration,

                               String path, String filename,

                               String relativePath) throws IOException {

         super(configuration, path, filename);

         this.configuration = configuration;

         this.path = path;

         this.relativePath = relativePath;

         this.relativepathNoSlash =

             DirectoryManager.getPathNoTrailingSlash(this.relativePath);

         this.filename = filename;

     }

     /**

      * Replace {@docRoot} tag used in options that accept HTML text, such

      * as -header, -footer, -top and -bottom, and when converting a relative

      * HREF where commentTagsToString inserts a {@docRoot} where one was

      * missing.  (Also see DocRootTaglet for {@docRoot} tags in doc

      * comments.)

      * <p>

      * Replace {@docRoot} tag in htmlstr with the relative path to the

      * destination directory from the directory where the file is being

      * written, looping to handle all such tags in htmlstr.

      * <p>

      * For example, for "-d docs" and -header containing {@docRoot}, when

      * the HTML page for source file p/C1.java is being generated, the

      * {@docRoot} tag would be inserted into the header as "../",

      * the relative path from docs/p/ to docs/ (the document root).

      * <p>

      * Note: This doc comment was written with '@' representing '@'

      * to prevent the inline tag from being interpreted.

      */

     public String replaceDocRootDir(String htmlstr) {

         // Return if no inline tags exist

         int index = htmlstr.indexOf("{@");

         if (index < 0) {

             return htmlstr;

         }

         String lowerHtml = htmlstr.toLowerCase();

         // Return index of first occurrence of {@docroot}

         // Note: {@docRoot} is not case sensitive when passed in w/command line option

         index = lowerHtml.indexOf("{@docroot}", index);

         if (index < 0) {

             return htmlstr;

         }

         StringBuilder buf = new StringBuilder();

         int previndex = 0;

         while (true) {

             if (configuration.docrootparent.length() > 0) {

                 // Search for lowercase version of {@docRoot}/..

                 index = lowerHtml.indexOf("{@docroot}/..", previndex);

                 // If next {@docRoot}/.. pattern not found, append rest of htmlstr and exit loop

                 if (index < 0) {

                     buf.append(htmlstr.substring(previndex));

                     break;

                 }

                 // If next {@docroot}/.. pattern found, append htmlstr up to start of tag

                 buf.append(htmlstr.substring(previndex, index));

                 previndex = index + 13;  // length for {@docroot}/.. string

                 // Insert docrootparent absolute path where {@docRoot}/.. was located

                 buf.append(configuration.docrootparent);

                 // Append slash if next character is not a slash

                 if (previndex < htmlstr.length() && htmlstr.charAt(previndex) != '/') {

                     buf.append(DirectoryManager.URL_FILE_SEPARATOR);

                 }

             } else {

                 // Search for lowercase version of {@docRoot}

                 index = lowerHtml.indexOf("{@docroot}", previndex);

                 // If next {@docRoot} tag not found, append rest of htmlstr and exit loop

                 if (index < 0) {

                     buf.append(htmlstr.substring(previndex));

                     break;

                 }

                 // If next {@docroot} tag found, append htmlstr up to start of tag

                 buf.append(htmlstr.substring(previndex, index));

                 previndex = index + 10;  // length for {@docroot} string

                 // Insert relative path where {@docRoot} was located

                 buf.append(relativepathNoSlash);

                 // Append slash if next character is not a slash

                 if (relativepathNoSlash.length() > 0 && previndex < htmlstr.length() &&

                         htmlstr.charAt(previndex) != '/') {

                     buf.append(DirectoryManager.URL_FILE_SEPARATOR);

                 }

             }

         }

         return buf.toString();

     }

     /**

      * Get the script to show or hide the All classes link.

      *

      * @param id id of the element to show or hide

      * @return a content tree for the script

      */

     public Content getAllClassesLinkScript(String id) {

         HtmlTree script = new HtmlTree(HtmlTag.SCRIPT);

         script.addAttr(HtmlAttr.TYPE, "text/javascript");

         String scriptCode = "<!--" + DocletConstants.NL +

                 "  allClassesLink = document.getElementById(\"" + id + "\");" + DocletConstants.NL +

                 "  if(window==top) {" + DocletConstants.NL +

                 "    allClassesLink.style.display = \"block\";" + DocletConstants.NL +

                 "  }" + DocletConstants.NL +

                 "  else {" + DocletConstants.NL +

                 "    allClassesLink.style.display = \"none\";" + DocletConstants.NL +

                 "  }" + DocletConstants.NL +

                 "  //-->" + DocletConstants.NL;

         Content scriptContent = new RawHtml(scriptCode);

         script.addContent(scriptContent);

         Content div = HtmlTree.DIV(script);

         return div;

     }

     /**

      * Add method information.

      *

      * @param method the method to be documented

      * @param dl the content tree to which the method information will be added

      */

     private void addMethodInfo(MethodDoc method, Content dl) {

         ClassDoc[] intfacs = method.containingClass().interfaces();

         MethodDoc overriddenMethod = method.overriddenMethod();

         // Check whether there is any implementation or overridden info to be

         // printed. If no overridden or implementation info needs to be

         // printed, do not print this section.

         if ((intfacs.length > 0 &&

                 new ImplementedMethods(method, this.configuration).build().length > 0) ||

                 overriddenMethod != null) {

             MethodWriterImpl.addImplementsInfo(this, method, dl);

             if (overriddenMethod != null) {

                 MethodWriterImpl.addOverridden(this,

                         method.overriddenType(), overriddenMethod, dl);

             }

         }

     }

     /**

      * Adds the tags information.

      *

      * @param doc the doc for which the tags will be generated

      * @param htmltree the documentation tree to which the tags will be added

      */

     protected void addTagsInfo(Doc doc, Content htmltree) {

         if (configuration.nocomment) {

             return;

         }

         Content dl = new HtmlTree(HtmlTag.DL);

         if (doc instanceof MethodDoc) {

             addMethodInfo((MethodDoc) doc, dl);

         }

         TagletOutputImpl output = new TagletOutputImpl("");

         TagletWriter.genTagOuput(configuration.tagletManager, doc,

             configuration.tagletManager.getCustomTags(doc),

                 getTagletWriterInstance(false), output);

         String outputString = output.toString().trim();

         if (!outputString.isEmpty()) {

             Content resultString = new RawHtml(outputString);

             dl.addContent(resultString);

         }

         htmltree.addContent(dl);

     }

     /**

      * Check whether there are any tags for Serialization Overview

      * section to be printed.

      *

      * @param field the FieldDoc object to check for tags.

      * @return true if there are tags to be printed else return false.

      */

     protected boolean hasSerializationOverviewTags(FieldDoc field) {

         TagletOutputImpl output = new TagletOutputImpl("");

         TagletWriter.genTagOuput(configuration.tagletManager, field,

             configuration.tagletManager.getCustomTags(field),

                 getTagletWriterInstance(false), output);

         return (!output.toString().trim().isEmpty());

     }

     /**

      * Returns a TagletWriter that knows how to write HTML.

      *

      * @return a TagletWriter that knows how to write HTML.

      */

     public TagletWriter getTagletWriterInstance(boolean isFirstSentence) {

         return new TagletWriterImpl(this, isFirstSentence);

     }

     /**

      * Get Package link, with target frame.

      *

      * @param pd The link will be to the "package-summary.html" page for this package

      * @param target name of the target frame

      * @param label tag for the link

      * @return a content for the target package link

      */

     public Content getTargetPackageLink(PackageDoc pd, String target,

             Content label) {

         return getHyperLink(pathString(pd, "package-summary.html"), "", label, "", target);

     }

     /**

      * Generates the HTML document tree and prints it out.

      *

      * @param metakeywords Array of String keywords for META tag. Each element

      *                     of the array is assigned to a separate META tag.

      *                     Pass in null for no array

      * @param includeScript true if printing windowtitle script

      *                      false for files that appear in the left-hand frames

      * @param body the body htmltree to be included in the document

      */

     public void printHtmlDocument(String[] metakeywords, boolean includeScript,

             Content body) throws IOException {

         Content htmlDocType = DocType.Transitional();

         Content htmlComment = new Comment(configuration.getText("doclet.New_Page"));

         Content head = new HtmlTree(HtmlTag.HEAD);

         if (!configuration.notimestamp) {

             Content headComment = new Comment(getGeneratedByString());

             head.addContent(headComment);

         }

         if (configuration.charset.length() > 0) {

             Content meta = HtmlTree.META("Content-Type", "text/html",

                     configuration.charset);

             head.addContent(meta);

         }

         head.addContent(getTitle());

         if (!configuration.notimestamp) {

             SimpleDateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd");

             Content meta = HtmlTree.META("date", dateFormat.format(new Date()));

             head.addContent(meta);

         }

         if (metakeywords != null) {

             for (int i=0; i < metakeywords.length; i++) {

                 Content meta = HtmlTree.META("keywords", metakeywords[i]);

                 head.addContent(meta);

             }

         }

         head.addContent(getStyleSheetProperties());

         Content htmlTree = HtmlTree.HTML(configuration.getLocale().getLanguage(),

                 head, body);

         Content htmlDocument = new HtmlDocument(htmlDocType,

                 htmlComment, htmlTree);

         write(htmlDocument);

     }

     /**

      * Get the window title.

      *

      * @param title the title string to construct the complete window title

      * @return the window title string

      */

     public String getWindowTitle(String title) {

         if (configuration.windowtitle.length() > 0) {

             title += " (" + configuration.windowtitle  + ")";

         }

         return title;

     }

     /**

      * Get user specified header and the footer.

      *

      * @param header if true print the user provided header else print the

      * user provided footer.

      */

     public Content getUserHeaderFooter(boolean header) {

         String content;

         if (header) {

             content = replaceDocRootDir(configuration.header);

         } else {

             if (configuration.footer.length() != 0) {

                 content = replaceDocRootDir(configuration.footer);

             } else {

                 content = replaceDocRootDir(configuration.header);

             }

         }

         Content rawContent = new RawHtml(content);

         Content em = HtmlTree.EM(rawContent);

         return em;

     }

     /**

      * Adds the user specified top.

      *

      * @param body the content tree to which user specified top will be added

      */

     public void addTop(Content body) {

         Content top = new RawHtml(replaceDocRootDir(configuration.top));

         body.addContent(top);

     }

     /**

      * Adds the user specified bottom.

      *

      * @param body the content tree to which user specified bottom will be added

      */

     public void addBottom(Content body) {

         Content bottom = new RawHtml(replaceDocRootDir(configuration.bottom));

         Content small = HtmlTree.SMALL(bottom);

         Content p = HtmlTree.P(HtmlStyle.legalCopy, small);

         body.addContent(p);

     }

     /**

      * Adds the navigation bar for the Html page at the top and and the bottom.

      *

      * @param header If true print navigation bar at the top of the page else

      * @param body the HtmlTree to which the nav links will be added

      */

     protected void addNavLinks(boolean header, Content body) {

         if (!configuration.nonavbar) {

             String allClassesId = "allclasses_";

             HtmlTree navDiv = new HtmlTree(HtmlTag.DIV);

             if (header) {

                 body.addContent(HtmlConstants.START_OF_TOP_NAVBAR);

                 navDiv.addStyle(HtmlStyle.topNav);

                 allClassesId += "navbar_top";

                 Content a = getMarkerAnchor("navbar_top");

                 navDiv.addContent(a);

                 Content skipLinkContent = getHyperLink("",

                         "skip-navbar_top", HtmlTree.EMPTY, configuration.getText(

                         "doclet.Skip_navigation_links"), "");

                 navDiv.addContent(skipLinkContent);

             } else {

                 body.addContent(HtmlConstants.START_OF_BOTTOM_NAVBAR);

                 navDiv.addStyle(HtmlStyle.bottomNav);

                 allClassesId += "navbar_bottom";

                 Content a = getMarkerAnchor("navbar_bottom");

                 navDiv.addContent(a);

                 Content skipLinkContent = getHyperLink("",

                         "skip-navbar_bottom", HtmlTree.EMPTY, configuration.getText(

                         "doclet.Skip_navigation_links"), "");

                 navDiv.addContent(skipLinkContent);

             }

             if (header) {

                 navDiv.addContent(getMarkerAnchor("navbar_top_firstrow"));

             } else {

                 navDiv.addContent(getMarkerAnchor("navbar_bottom_firstrow"));

             }

             HtmlTree navList = new HtmlTree(HtmlTag.UL);

             navList.addStyle(HtmlStyle.navList);

             navList.addAttr(HtmlAttr.TITLE, "Navigation");

             if (configuration.createoverview) {

                 navList.addContent(getNavLinkContents());

             }

             if (configuration.packages.length == 1) {

                 navList.addContent(getNavLinkPackage(configuration.packages[0]));

             } else if (configuration.packages.length > 1) {

                 navList.addContent(getNavLinkPackage());

             }

             navList.addContent(getNavLinkClass());

             if(configuration.classuse) {

                 navList.addContent(getNavLinkClassUse());

             }

             if(configuration.createtree) {

                 navList.addContent(getNavLinkTree());

             }

             if(!(configuration.nodeprecated ||

                      configuration.nodeprecatedlist)) {

                 navList.addContent(getNavLinkDeprecated());

             }

             if(configuration.createindex) {

                 navList.addContent(getNavLinkIndex());

             }

             if (!configuration.nohelp) {

                 navList.addContent(getNavLinkHelp());

             }

             navDiv.addContent(navList);

             Content aboutDiv = HtmlTree.DIV(HtmlStyle.aboutLanguage, getUserHeaderFooter(header));

             navDiv.addContent(aboutDiv);

             body.addContent(navDiv);

             Content ulNav = HtmlTree.UL(HtmlStyle.navList, getNavLinkPrevious());

             ulNav.addContent(getNavLinkNext());

             Content subDiv = HtmlTree.DIV(HtmlStyle.subNav, ulNav);

             Content ulFrames = HtmlTree.UL(HtmlStyle.navList, getNavShowLists());

             ulFrames.addContent(getNavHideLists(filename));

             subDiv.addContent(ulFrames);

             HtmlTree ulAllClasses = HtmlTree.UL(HtmlStyle.navList, getNavLinkClassIndex());

             ulAllClasses.addAttr(HtmlAttr.ID, allClassesId.toString());

             subDiv.addContent(ulAllClasses);

             subDiv.addContent(getAllClassesLinkScript(allClassesId.toString()));

             addSummaryDetailLinks(subDiv);

             if (header) {

                 subDiv.addContent(getMarkerAnchor("skip-navbar_top"));

                 body.addContent(subDiv);

                 body.addContent(HtmlConstants.END_OF_TOP_NAVBAR);

             } else {

                 subDiv.addContent(getMarkerAnchor("skip-navbar_bottom"));

                 body.addContent(subDiv);

                 body.addContent(HtmlConstants.END_OF_BOTTOM_NAVBAR);

             }

         }

     }

     /**

      * Get the word "NEXT" to indicate that no link is available.  Override

      * this method to customize next link.

      *

      * @return a content tree for the link

      */

     protected Content getNavLinkNext() {

         return getNavLinkNext(null);

     }

     /**

      * Get the word "PREV" to indicate that no link is available.  Override

      * this method to customize prev link.

      *

      * @return a content tree for the link

      */

     protected Content getNavLinkPrevious() {

         return getNavLinkPrevious(null);

     }

     /**

      * Do nothing. This is the default method.

      */

     protected void addSummaryDetailLinks(Content navDiv) {

     }

     /**

      * Get link to the "overview-summary.html" page.

      *

      * @return a content tree for the link

      */

     protected Content getNavLinkContents() {

         Content linkContent = getHyperLink(relativePath +

                 "overview-summary.html", "", overviewLabel, "", "");

         Content li = HtmlTree.LI(linkContent);

         return li;

     }

     /**

      * Get link to the "package-summary.html" page for the package passed.

      *

      * @param pkg Package to which link will be generated

      * @return a content tree for the link

      */

     protected Content getNavLinkPackage(PackageDoc pkg) {

         Content linkContent = getPackageLink(pkg,

                 packageLabel);

         Content li = HtmlTree.LI(linkContent);

         return li;

     }

     /**

      * Get the word "Package" , to indicate that link is not available here.

      *

      * @return a content tree for the link

      */

     protected Content getNavLinkPackage() {

         Content li = HtmlTree.LI(packageLabel);

         return li;

     }

     /**

      * Get the word "Use", to indicate that link is not available.

      *

      * @return a content tree for the link

      */

     protected Content getNavLinkClassUse() {

         Content li = HtmlTree.LI(useLabel);

         return li;

     }

     /**

      * Get link for previous file.

      *

      * @param prev File name for the prev link

      * @return a content tree for the link

      */

     public Content getNavLinkPrevious(String prev) {

         Content li;

         if (prev != null) {

             li = HtmlTree.LI(getHyperLink(prev, "", prevLabel, "", ""));

         }

         else

             li = HtmlTree.LI(prevLabel);

         return li;

     }

     /**

      * Get link for next file.  If next is null, just print the label

      * without linking it anywhere.

      *

      * @param next File name for the next link

      * @return a content tree for the link

      */

     public Content getNavLinkNext(String next) {

         Content li;

         if (next != null) {

             li = HtmlTree.LI(getHyperLink(next, "", nextLabel, "", ""));

         }

         else

             li = HtmlTree.LI(nextLabel);

         return li;

     }

     /**

      * Get "FRAMES" link, to switch to the frame version of the output.

      *

      * @param link File to be linked, "index.html"

      * @return a content tree for the link

      */

     protected Content getNavShowLists(String link) {

         Content framesContent = getHyperLink(link + "?" + path +

                 filename, "", framesLabel, "", "_top");

         Content li = HtmlTree.LI(framesContent);

         return li;

     }

     /**

      * Get "FRAMES" link, to switch to the frame version of the output.

      *

      * @return a content tree for the link

      */

     protected Content getNavShowLists() {

         return getNavShowLists(relativePath + "index.html");

     }

     /**

      * Get "NO FRAMES" link, to switch to the non-frame version of the output.

      *

      * @param link File to be linked

      * @return a content tree for the link

      */

     protected Content getNavHideLists(String link) {

         Content noFramesContent = getHyperLink(link, "", noframesLabel, "", "_top");

         Content li = HtmlTree.LI(noFramesContent);

         return li;

     }

     /**

      * Get "Tree" link in the navigation bar. If there is only one package

      * specified on the command line, then the "Tree" link will be to the

      * only "package-tree.html" file otherwise it will be to the

      * "overview-tree.html" file.

      *

      * @return a content tree for the link

      */

     protected Content getNavLinkTree() {

         Content treeLinkContent;

         PackageDoc[] packages = configuration.root.specifiedPackages();

         if (packages.length == 1 && configuration.root.specifiedClasses().length == 0) {

             treeLinkContent = getHyperLink(pathString(packages[0],

                     "package-tree.html"), "", treeLabel,

                     "", "");

         } else {

             treeLinkContent = getHyperLink(relativePath + "overview-tree.html",

                     "", treeLabel, "", "");

         }

         Content li = HtmlTree.LI(treeLinkContent);

         return li;

     }

     /**

      * Get the overview tree link for the main tree.

      *

      * @param label the label for the link

      * @return a content tree for the link

      */

     protected Content getNavLinkMainTree(String label) {

         Content mainTreeContent = getHyperLink(relativePath + "overview-tree.html",

                 new StringContent(label));

         Content li = HtmlTree.LI(mainTreeContent);

         return li;

     }

     /**

      * Get the word "Class", to indicate that class link is not available.

      *

      * @return a content tree for the link

      */

     protected Content getNavLinkClass() {

         Content li = HtmlTree.LI(classLabel);

         return li;

     }

     /**

      * Get "Deprecated" API link in the navigation bar.

      *

      * @return a content tree for the link

      */

     protected Content getNavLinkDeprecated() {

         Content linkContent = getHyperLink(relativePath +

                 "deprecated-list.html", "", deprecatedLabel, "", "");

         Content li = HtmlTree.LI(linkContent);

         return li;

     }

     /**

      * Get link for generated index. If the user has used "-splitindex"

      * command line option, then link to file "index-files/index-1.html" is

      * generated otherwise link to file "index-all.html" is generated.

      *

      * @return a content tree for the link

      */

     protected Content getNavLinkClassIndex() {

         Content allClassesContent = getHyperLink(relativePath +

                 AllClassesFrameWriter.OUTPUT_FILE_NAME_NOFRAMES, "",

                 allclassesLabel, "", "");

         Content li = HtmlTree.LI(allClassesContent);

         return li;

     }

     /**

      * Get link for generated class index.

      *

      * @return a content tree for the link

      */

     protected Content getNavLinkIndex() {

         Content linkContent = getHyperLink(relativePath +(configuration.splitindex?

             DirectoryManager.getPath("index-files") + fileseparator: "") +

             (configuration.splitindex?"index-1.html" : "index-all.html"), "",

             indexLabel, "", "");

         Content li = HtmlTree.LI(linkContent);

         return li;

     }

     /**

      * Get help file link. If user has provided a help file, then generate a

      * link to the user given file, which is already copied to current or

      * destination directory.

      *

      * @return a content tree for the link

      */

     protected Content getNavLinkHelp() {

         String helpfilenm = configuration.helpfile;

         if (helpfilenm.equals("")) {

             helpfilenm = "help-doc.html";

         } else {

             int lastsep;

             if ((lastsep = helpfilenm.lastIndexOf(File.separatorChar)) != -1) {

                 helpfilenm = helpfilenm.substring(lastsep + 1);

             }

         }

         Content linkContent = getHyperLink(relativePath + helpfilenm, "",

                 helpLabel, "", "");

         Content li = HtmlTree.LI(linkContent);

         return li;

     }

     /**

      * Get summary table header.

      *

      * @param header the header for the table

      * @param scope the scope of the headers

      * @return a content tree for the header

      */

     public Content getSummaryTableHeader(String[] header, String scope) {

         Content tr = new HtmlTree(HtmlTag.TR);

         int size = header.length;

         Content tableHeader;

         if (size == 1) {

             tableHeader = new StringContent(header[0]);

             tr.addContent(HtmlTree.TH(HtmlStyle.colOne, scope, tableHeader));

             return tr;

         }

         for (int i = 0; i < size; i++) {

             tableHeader = new StringContent(header[i]);

             if(i == 0)

                 tr.addContent(HtmlTree.TH(HtmlStyle.colFirst, scope, tableHeader));

             else if(i == (size - 1))

                 tr.addContent(HtmlTree.TH(HtmlStyle.colLast, scope, tableHeader));

             else

                 tr.addContent(HtmlTree.TH(scope, tableHeader));

         }

         return tr;

     }

     /**

      * Get table caption.

      *

      * @param rawText the caption for the table which could be raw Html

      * @return a content tree for the caption

      */

     public Content getTableCaption(String rawText) {

         Content title = new RawHtml(rawText);

         Content captionSpan = HtmlTree.SPAN(title);

         Content space = getSpace();

         Content tabSpan = HtmlTree.SPAN(HtmlStyle.tabEnd, space);

         Content caption = HtmlTree.CAPTION(captionSpan);

         caption.addContent(tabSpan);

         return caption;

     }

     /**

      * Get the marker anchor which will be added to the documentation tree.

      *

      * @param anchorName the anchor name attribute

      * @return a content tree for the marker anchor

      */

     public Content getMarkerAnchor(String anchorName) {

         return getMarkerAnchor(anchorName, null);

     }

     /**

      * Get the marker anchor which will be added to the documentation tree.

      *

      * @param anchorName the anchor name attribute

      * @param anchorContent the content that should be added to the anchor

      * @return a content tree for the marker anchor

      */

     public Content getMarkerAnchor(String anchorName, Content anchorContent) {

         if (anchorContent == null)

             anchorContent = new Comment(" ");

         Content markerAnchor = HtmlTree.A_NAME(anchorName, anchorContent);

         return markerAnchor;

     }

     /**

      * Returns a packagename content.

      *

      * @param packageDoc the package to check

      * @return package name content

      */

     public Content getPackageName(PackageDoc packageDoc) {

         return packageDoc == null || packageDoc.name().length() == 0 ?

             defaultPackageLabel :

             getPackageLabel(packageDoc.name());

     }

     /**

      * Returns a package name label.

      *

      * @param packageName the package name

      * @return the package name content

      */

     public Content getPackageLabel(String packageName) {

         return new StringContent(packageName);

     }

     /**

      * Add package deprecation information to the documentation tree

      *

      * @param deprPkgs list of deprecated packages

      * @param headingKey the caption for the deprecated package table

      * @param tableSummary the summary for the deprecated package table

      * @param tableHeader table headers for the deprecated package table

      * @param contentTree the content tree to which the deprecated package table will be added

      */

     protected void addPackageDeprecatedAPI(List<Doc> deprPkgs, String headingKey,

             String tableSummary, String[] tableHeader, Content contentTree) {

         if (deprPkgs.size() > 0) {

             Content table = HtmlTree.TABLE(0, 3, 0, tableSummary,

                     getTableCaption(configuration().getText(headingKey)));

             table.addContent(getSummaryTableHeader(tableHeader, "col"));

             Content tbody = new HtmlTree(HtmlTag.TBODY);

             for (int i = 0; i < deprPkgs.size(); i++) {

                 PackageDoc pkg = (PackageDoc) deprPkgs.get(i);

                 HtmlTree td = HtmlTree.TD(HtmlStyle.colOne,

                         getPackageLink(pkg, getPackageName(pkg)));

                 if (pkg.tags("deprecated").length > 0) {

                     addInlineDeprecatedComment(pkg, pkg.tags("deprecated")[0], td);

                 }

                 HtmlTree tr = HtmlTree.TR(td);

                 if (i % 2 == 0) {

                     tr.addStyle(HtmlStyle.altColor);

                 } else {

                     tr.addStyle(HtmlStyle.rowColor);

                 }

                 tbody.addContent(tr);

             }

             table.addContent(tbody);

             Content li = HtmlTree.LI(HtmlStyle.blockList, table);

             Content ul = HtmlTree.UL(HtmlStyle.blockList, li);

             contentTree.addContent(ul);

         }

     }

     /**

      * Return path to the class page for a classdoc. For example, the class

      * name is "java.lang.Object" and if the current file getting generated is

      * "java/io/File.html", then the path string to the class, returned is

      * "../../java/lang.Object.html".

      *

      * @param cd Class to which the path is requested.

      */

     protected String pathToClass(ClassDoc cd) {

         return pathString(cd.containingPackage(), cd.name() + ".html");

     }

     /**

      * Return the path to the class page for a classdoc. Works same as

      * {@link #pathToClass(ClassDoc)}.

      *

      * @param cd   Class to which the path is requested.

      * @param name Name of the file(doesn't include path).

      */

     protected String pathString(ClassDoc cd, String name) {

         return pathString(cd.containingPackage(), name);

     }

     /**

      * Return path to the given file name in the given package. So if the name

      * passed is "Object.html" and the name of the package is "java.lang", and

      * if the relative path is "../.." then returned string will be

      * "../../java/lang/Object.html"

      *

      * @param pd Package in which the file name is assumed to be.

      * @param name File name, to which path string is.

      */

     protected String pathString(PackageDoc pd, String name) {

         StringBuilder buf = new StringBuilder(relativePath);

         buf.append(DirectoryManager.getPathToPackage(pd, name));

         return buf.toString();

     }

     /**

      * Return the link to the given package.

      *

      * @param pkg the package to link to.

      * @param label the label for the link.

      * @param isStrong true if the label should be strong.

      * @return the link to the given package.

      */

     public String getPackageLinkString(PackageDoc pkg, String label,

                                  boolean isStrong) {

         return getPackageLinkString(pkg, label, isStrong, "");

     }

     /**

      * Return the link to the given package.

      *

      * @param pkg the package to link to.

      * @param label the label for the link.

      * @param isStrong true if the label should be strong.

      * @param style  the font of the package link label.

      * @return the link to the given package.

      */

     public String getPackageLinkString(PackageDoc pkg, String label, boolean isStrong,

             String style) {

         boolean included = pkg != null && pkg.isIncluded();

         if (! included) {

             PackageDoc[] packages = configuration.packages;

             for (int i = 0; i < packages.length; i++) {

                 if (packages[i].equals(pkg)) {

                     included = true;

                     break;

                 }

             }

         }

         if (included || pkg == null) {

             return getHyperLinkString(pathString(pkg, "package-summary.html"),

                                 "", label, isStrong, style);

         } else {

             String crossPkgLink = getCrossPackageLink(Util.getPackageName(pkg));

             if (crossPkgLink != null) {

                 return getHyperLinkString(crossPkgLink, "", label, isStrong, style);

             } else {

                 return label;

             }

         }

     }

     /**

      * Return the link to the given package.

      *

      * @param pkg the package to link to.

      * @param label the label for the link.

      * @return a content tree for the package link.

      */

     public Content getPackageLink(PackageDoc pkg, Content label) {

         boolean included = pkg != null && pkg.isIncluded();

         if (! included) {

             PackageDoc[] packages = configuration.packages;

             for (int i = 0; i < packages.length; i++) {

                 if (packages[i].equals(pkg)) {

                     included = true;

                     break;

                 }

             }

         }

         if (included || pkg == null) {

             return getHyperLink(pathString(pkg, "package-summary.html"),

                                 "", label);

         } else {

             String crossPkgLink = getCrossPackageLink(Util.getPackageName(pkg));

             if (crossPkgLink != null) {

                 return getHyperLink(crossPkgLink, "", label);

             } else {

                 return label;

             }

         }

     }

     public String italicsClassName(ClassDoc cd, boolean qual) {

         String name = (qual)? cd.qualifiedName(): cd.name();

         return (cd.isInterface())?  italicsText(name): name;

     }

     /**

      * Add the link to the content tree.

      *

      * @param doc program element doc for which the link will be added

      * @param label label for the link

      * @param htmltree the content tree to which the link will be added

      */

     public void addSrcLink(ProgramElementDoc doc, Content label, Content htmltree) {

         if (doc == null) {

             return;

         }

         ClassDoc cd = doc.containingClass();

         if (cd == null) {

             //d must be a class doc since in has no containing class.

             cd = (ClassDoc) doc;

         }

         String href = relativePath + DocletConstants.SOURCE_OUTPUT_DIR_NAME

                 + DirectoryManager.getDirectoryPath(cd.containingPackage())

                 + cd.name() + ".html#" + SourceToHTMLConverter.getAnchorName(doc);

         Content linkContent = getHyperLink(href, "", label, "", "");

         htmltree.addContent(linkContent);

     }

     /**

      * Return the link to the given class.

      *

      * @param linkInfo the information about the link.

      *

      * @return the link for the given class.

      */

     public String getLink(LinkInfoImpl linkInfo) {

         LinkFactoryImpl factory = new LinkFactoryImpl(this);

         String link = ((LinkOutputImpl) factory.getLinkOutput(linkInfo)).toString();

         displayLength += linkInfo.displayLength;

         return link;

     }

     /**

      * Return the type parameters for the given class.

      *

      * @param linkInfo the information about the link.

      * @return the type for the given class.

      */

     public String getTypeParameterLinks(LinkInfoImpl linkInfo) {

         LinkFactoryImpl factory = new LinkFactoryImpl(this);

         return ((LinkOutputImpl)

             factory.getTypeParameterLinks(linkInfo, false)).toString();

     }

     /*************************************************************

      * Return a class cross link to external class documentation.

      * The name must be fully qualified to determine which package

      * the class is in.  The -link option does not allow users to

      * link to external classes in the "default" package.

      *

      * @param qualifiedClassName the qualified name of the external class.

      * @param refMemName the name of the member being referenced.  This should

      * be null or empty string if no member is being referenced.

      * @param label the label for the external link.

      * @param strong true if the link should be strong.

      * @param style the style of the link.

      * @param code true if the label should be code font.

      */

     public String getCrossClassLink(String qualifiedClassName, String refMemName,

                                     String label, boolean strong, String style,

                                     boolean code) {

         String className = "",

             packageName = qualifiedClassName == null ? "" : qualifiedClassName;

         int periodIndex;

         while((periodIndex = packageName.lastIndexOf('.')) != -1) {

             className = packageName.substring(periodIndex + 1, packageName.length()) +

                 (className.length() > 0 ? "." + className : "");

             String defaultLabel = code ? codeText(className) : className;

             packageName = packageName.substring(0, periodIndex);

             if (getCrossPackageLink(packageName) != null) {

                 //The package exists in external documentation, so link to the external

                 //class (assuming that it exists).  This is definitely a limitation of

                 //the -link option.  There are ways to determine if an external package

                 //exists, but no way to determine if the external class exists.  We just

                 //have to assume that it does.

                 return getHyperLinkString(

                     configuration.extern.getExternalLink(packageName, relativePath,

                                 className + ".html?is-external=true"),

                     refMemName == null ? "" : refMemName,

                     label == null || label.length() == 0 ? defaultLabel : label,

                     strong, style,

                     configuration.getText("doclet.Href_Class_Or_Interface_Title", packageName),

                     "");

             }

         }

         return null;

     }

     public boolean isClassLinkable(ClassDoc cd) {

         if (cd.isIncluded()) {

             return configuration.isGeneratedDoc(cd);

         }

         return configuration.extern.isExternal(cd);

     }

     public String getCrossPackageLink(String pkgName) {

         return configuration.extern.getExternalLink(pkgName, relativePath,

             "package-summary.html?is-external=true");

     }

     /**

      * Get the class link.

      *

      * @param context the id of the context where the link will be added

      * @param cd the class doc to link to

      * @return a content tree for the link

      */

     public Content getQualifiedClassLink(int context, ClassDoc cd) {

         return new RawHtml(getLink(new LinkInfoImpl(context, cd,

                 configuration.getClassName(cd), "")));

     }

     /**

      * Add the class link.

      *

      * @param context the id of the context where the link will be added

      * @param cd the class doc to link to

      * @param contentTree the content tree to which the link will be added

      */

     public void addPreQualifiedClassLink(int context, ClassDoc cd, Content contentTree) {

         addPreQualifiedClassLink(context, cd, false, contentTree);

     }

     /**

      * Retrieve the class link with the package portion of the label in

      * plain text.  If the qualifier is excluded, it willnot be included in the

      * link label.

      *

      * @param cd the class to link to.

      * @param isStrong true if the link should be strong.

      * @return the link with the package portion of the label in plain text.

      */

     public String getPreQualifiedClassLink(int context,

             ClassDoc cd, boolean isStrong) {

         String classlink = "";

         PackageDoc pd = cd.containingPackage();

         if(pd != null && ! configuration.shouldExcludeQualifier(pd.name())) {

             classlink = getPkgName(cd);

         }

         classlink += getLink(new LinkInfoImpl(context, cd, cd.name(), isStrong));

         return classlink;

     }

     /**

      * Add the class link with the package portion of the label in

      * plain text. If the qualifier is excluded, it will not be included in the

      * link label.

      *

      * @param context the id of the context where the link will be added

      * @param cd the class to link to

      * @param isStrong true if the link should be strong

      * @param contentTree the content tree to which the link with be added

      */

     public void addPreQualifiedClassLink(int context,

             ClassDoc cd, boolean isStrong, Content contentTree) {

         PackageDoc pd = cd.containingPackage();

         if(pd != null && ! configuration.shouldExcludeQualifier(pd.name())) {

             contentTree.addContent(getPkgName(cd));

         }

         contentTree.addContent(new RawHtml(getLink(new LinkInfoImpl(

                 context, cd, cd.name(), isStrong))));

     }

     /**

      * Add the class link, with only class name as the strong link and prefixing

      * plain package name.

      *

      * @param context the id of the context where the link will be added

      * @param cd the class to link to

      * @param contentTree the content tree to which the link with be added

      */

     public void addPreQualifiedStrongClassLink(int context, ClassDoc cd, Content contentTree) {

         addPreQualifiedClassLink(context, cd, true, contentTree);

     }

     /**

      * Get the link for the given member.

      *

      * @param context the id of the context where the link will be added

      * @param doc the member being linked to

      * @param label the label for the link

      * @return a content tree for the doc link

      */

     public Content getDocLink(int context, MemberDoc doc, String label) {

         return getDocLink(context, doc.containingClass(), doc, label);

     }

     /**

      * Return the link for the given member.

      *

      * @param context the id of the context where the link will be printed.

      * @param doc the member being linked to.

      * @param label the label for the link.

      * @param strong true if the link should be strong.

      * @return the link for the given member.

      */

     public String getDocLink(int context, MemberDoc doc, String label,

                 boolean strong) {

         return getDocLink(context, doc.containingClass(), doc, label, strong);

     }

     /**

      * Return the link for the given member.

      *

      * @param context the id of the context where the link will be printed.

      * @param classDoc the classDoc that we should link to.  This is not

      *                 necessarily equal to doc.containingClass().  We may be

      *                 inheriting comments.

      * @param doc the member being linked to.

      * @param label the label for the link.

      * @param strong true if the link should be strong.

      * @return the link for the given member.

      */

     public String getDocLink(int context, ClassDoc classDoc, MemberDoc doc,

         String label, boolean strong) {

         if (! (doc.isIncluded() ||

             Util.isLinkable(classDoc, configuration()))) {

             return label;

         } else if (doc instanceof ExecutableMemberDoc) {

             ExecutableMemberDoc emd = (ExecutableMemberDoc)doc;

             return getLink(new LinkInfoImpl(context, classDoc,

                 getAnchor(emd), label, strong));

         } else if (doc instanceof MemberDoc) {

             return getLink(new LinkInfoImpl(context, classDoc,

                 doc.name(), label, strong));

         } else {

             return label;

         }

     }

     /**

      * Return the link for the given member.

      *

      * @param context the id of the context where the link will be added

      * @param classDoc the classDoc that we should link to.  This is not

      *                 necessarily equal to doc.containingClass().  We may be

      *                 inheriting comments

      * @param doc the member being linked to

      * @param label the label for the link

      * @return the link for the given member

      */

     public Content getDocLink(int context, ClassDoc classDoc, MemberDoc doc,

         String label) {

         if (! (doc.isIncluded() ||

             Util.isLinkable(classDoc, configuration()))) {

             return new StringContent(label);

         } else if (doc instanceof ExecutableMemberDoc) {

             ExecutableMemberDoc emd = (ExecutableMemberDoc)doc;

             return new RawHtml(getLink(new LinkInfoImpl(context, classDoc,

                 getAnchor(emd), label, false)));

         } else if (doc instanceof MemberDoc) {

             return new RawHtml(getLink(new LinkInfoImpl(context, classDoc,

                 doc.name(), label, false)));

         } else {

             return new StringContent(label);

         }

     }

     public String getAnchor(ExecutableMemberDoc emd) {

         StringBuilder signature = new StringBuilder(emd.signature());

         StringBuilder signatureParsed = new StringBuilder();

         int counter = 0;

         for (int i = 0; i < signature.length(); i++) {

             char c = signature.charAt(i);

             if (c == '<') {

                 counter++;

             } else if (c == '>') {

                 counter--;

             } else if (counter == 0) {

                 signatureParsed.append(c);

             }

         }

         return emd.name() + signatureParsed.toString();

     }

     public String seeTagToString(SeeTag see) {

         String tagName = see.name();

         if (! (tagName.startsWith("@link") || tagName.equals("@see"))) {

             return "";

         }

         String seetext = replaceDocRootDir(see.text());

         //Check if @see is an href or "string"

         if (seetext.startsWith("<") || seetext.startsWith("\"")) {

             return seetext;

         }

         boolean plain = tagName.equalsIgnoreCase("@linkplain");

         String label = plainOrCodeText(plain, see.label());

         //The text from the @see tag.  We will output this text when a label is not specified.

         String text = plainOrCodeText(plain, seetext);

         ClassDoc refClass = see.referencedClass();

         String refClassName = see.referencedClassName();

         MemberDoc refMem = see.referencedMember();

         String refMemName = see.referencedMemberName();

         if (refClass == null) {

             //@see is not referencing an included class

             PackageDoc refPackage = see.referencedPackage();

             if (refPackage != null && refPackage.isIncluded()) {

                 //@see is referencing an included package

                 if (label.isEmpty())

                     label = plainOrCodeText(plain, refPackage.name());

                 return getPackageLinkString(refPackage, label, false);

             } else {

                 //@see is not referencing an included class or package.  Check for cross links.

                 String classCrossLink, packageCrossLink = getCrossPackageLink(refClassName);

                 if (packageCrossLink != null) {

                     //Package cross link found

                     return getHyperLinkString(packageCrossLink, "",

                         (label.isEmpty() ? text : label), false);

                 } else if ((classCrossLink = getCrossClassLink(refClassName,

                         refMemName, label, false, "", !plain)) != null) {

                     //Class cross link found (possibly to a member in the class)

                     return classCrossLink;

                 } else {

                     //No cross link found so print warning

                     configuration.getDocletSpecificMsg().warning(see.position(), "doclet.see.class_or_package_not_found",

                             tagName, seetext);

                     return (label.isEmpty() ? text: label);

                 }

             }

         } else if (refMemName == null) {

             // Must be a class reference since refClass is not null and refMemName is null.

             if (label.isEmpty()) {

                 label = plainOrCodeText(plain, refClass.name());

             }

             return getLink(new LinkInfoImpl(refClass, label));

         } else if (refMem == null) {

             // Must be a member reference since refClass is not null and refMemName is not null.

             // However, refMem is null, so this referenced member does not exist.

             return (label.isEmpty() ? text: label);

         } else {

             // Must be a member reference since refClass is not null and refMemName is not null.

             // refMem is not null, so this @see tag must be referencing a valid member.

             ClassDoc containing = refMem.containingClass();

             if (see.text().trim().startsWith("#") &&

                 ! (containing.isPublic() ||

                 Util.isLinkable(containing, configuration()))) {

                 // Since the link is relative and the holder is not even being

                 // documented, this must be an inherited link.  Redirect it.

                 // The current class either overrides the referenced member or

                 // inherits it automatically.

                 if (this instanceof ClassWriterImpl) {

                     containing = ((ClassWriterImpl) this).getClassDoc();

                 } else if (!containing.isPublic()){

                     configuration.getDocletSpecificMsg().warning(

                         see.position(), "doclet.see.class_or_package_not_accessible",

                         tagName, containing.qualifiedName());

                 } else {

                     configuration.getDocletSpecificMsg().warning(

                         see.position(), "doclet.see.class_or_package_not_found",

                         tagName, seetext);

                 }

             }

             if (configuration.currentcd != containing) {

                 refMemName = containing.name() + "." + refMemName;

             }

             if (refMem instanceof ExecutableMemberDoc) {

                 if (refMemName.indexOf('(') < 0) {

                     refMemName += ((ExecutableMemberDoc)refMem).signature();

                 }

             }

             text = plainOrCodeText(plain, Util.escapeHtmlChars(refMemName));

             return getDocLink(LinkInfoImpl.CONTEXT_SEE_TAG, containing,

                 refMem, (label.isEmpty() ? text: label), false);

         }

     }

     private String plainOrCodeText(boolean plain, String text) {

         return (plain || text.isEmpty()) ? text : codeText(text);

     }

     /**

      * Add the inline comment.

      *

      * @param doc the doc for which the inline comment will be added

      * @param tag the inline tag to be added

      * @param htmltree the content tree to which the comment will be added

      */

     public void addInlineComment(Doc doc, Tag tag, Content htmltree) {

         addCommentTags(doc, tag.inlineTags(), false, false, htmltree);

     }

     /**

      * Add the inline deprecated comment.

      *

      * @param doc the doc for which the inline deprecated comment will be added

      * @param tag the inline tag to be added

      * @param htmltree the content tree to which the comment will be added

      */

     public void addInlineDeprecatedComment(Doc doc, Tag tag, Content htmltree) {

         addCommentTags(doc, tag.inlineTags(), true, false, htmltree);

     }

     /**

      * Adds the summary content.

      *

      * @param doc the doc for which the summary will be generated

      * @param htmltree the documentation tree to which the summary will be added

      */

     public void addSummaryComment(Doc doc, Content htmltree) {

         addSummaryComment(doc, doc.firstSentenceTags(), htmltree);

     }

     /**

      * Adds the summary content.

      *

      * @param doc the doc for which the summary will be generated

      * @param firstSentenceTags the first sentence tags for the doc

      * @param htmltree the documentation tree to which the summary will be added

      */

     public void addSummaryComment(Doc doc, Tag[] firstSentenceTags, Content htmltree) {

         addCommentTags(doc, firstSentenceTags, false, true, htmltree);

     }

     public void addSummaryDeprecatedComment(Doc doc, Tag tag, Content htmltree) {

         addCommentTags(doc, tag.firstSentenceTags(), true, true, htmltree);

     }

     /**

      * Adds the inline comment.

      *

      * @param doc the doc for which the inline comments will be generated

      * @param htmltree the documentation tree to which the inline comments will be added

      */

     public void addInlineComment(Doc doc, Content htmltree) {

         addCommentTags(doc, doc.inlineTags(), false, false, htmltree);

     }

     /**

      * Adds the comment tags.

      *

      * @param doc the doc for which the comment tags will be generated

      * @param tags the first sentence tags for the doc

      * @param depr true if it is deprecated

      * @param first true if the first sentenge tags should be added

      * @param htmltree the documentation tree to which the comment tags will be added

      */

     private void addCommentTags(Doc doc, Tag[] tags, boolean depr,

             boolean first, Content htmltree) {

         if(configuration.nocomment){

             return;

         }

         Content div;

         Content result = new RawHtml(commentTagsToString(null, doc, tags, first));

         if (depr) {

             Content italic = HtmlTree.I(result);

             div = HtmlTree.DIV(HtmlStyle.block, italic);

             htmltree.addContent(div);

         }

         else {

             div = HtmlTree.DIV(HtmlStyle.block, result);

             htmltree.addContent(div);

         }

         if (tags.length == 0) {

             htmltree.addContent(getSpace());

         }

     }

     /**

      * Converts inline tags and text to text strings, expanding the

      * inline tags along the way.  Called wherever text can contain

      * an inline tag, such as in comments or in free-form text arguments

      * to non-inline tags.

      *

      * @param holderTag    specific tag where comment resides

      * @param doc    specific doc where comment resides

      * @param tags   array of text tags and inline tags (often alternating)

      *               present in the text of interest for this doc

      * @param isFirstSentence  true if text is first sentence

      */

     public String commentTagsToString(Tag holderTag, Doc doc, Tag[] tags,

             boolean isFirstSentence) {

         StringBuilder result = new StringBuilder();

         boolean textTagChange = false;

         // Array of all possible inline tags for this javadoc run

         configuration.tagletManager.checkTags(doc, tags, true);

         for (int i = 0; i < tags.length; i++) {

             Tag tagelem = tags[i];

             String tagName = tagelem.name();

             if (tagelem instanceof SeeTag) {

                 result.append(seeTagToString((SeeTag)tagelem));

             } else if (! tagName.equals("Text")) {

                 int originalLength = result.length();

                 TagletOutput output = TagletWriter.getInlineTagOuput(

                     configuration.tagletManager, holderTag,

                     tagelem, getTagletWriterInstance(isFirstSentence));

                 result.append(output == null ? "" : output.toString());

                 if (originalLength == 0 && isFirstSentence && tagelem.name().equals("@inheritDoc") && result.length() > 0) {

                     break;

                 } else if (configuration.docrootparent.length() > 0 &&

                         tagelem.name().equals("@docRoot") &&

                         ((tags[i + 1]).text()).startsWith("/..")) {

                     //If Xdocrootparent switch ON, set the flag to remove the /.. occurance after

                     //{@docRoot} tag in the very next Text tag.

                     textTagChange = true;

                     continue;

                 } else {

                     continue;

                 }

             } else {

                 String text = tagelem.text();

                 //If Xdocrootparent switch ON, remove the /.. occurance after {@docRoot} tag.

                 if (textTagChange) {

                     text = text.replaceFirst("/..", "");

                     textTagChange = false;

                 }

                 //This is just a regular text tag.  The text may contain html links (<a>)

                 //or inline tag {@docRoot}, which will be handled as special cases.

                 text = redirectRelativeLinks(tagelem.holder(), text);

                 // Replace @docRoot only if not represented by an instance of DocRootTaglet,

                 // that is, only if it was not present in a source file doc comment.

                 // This happens when inserted by the doclet (a few lines

                 // above in this method).  [It might also happen when passed in on the command

                 // line as a text argument to an option (like -header).]

                 text = replaceDocRootDir(text);

                 if (isFirstSentence) {

                     text = removeNonInlineHtmlTags(text);

                 }

                 StringTokenizer lines = new StringTokenizer(text, "\r\n", true);

                 StringBuilder textBuff = new StringBuilder();

                 while (lines.hasMoreTokens()) {

                     StringBuilder line = new StringBuilder(lines.nextToken());

                     Util.replaceTabs(configuration.sourcetab, line);

                     textBuff.append(line.toString());

                 }

                 result.append(textBuff);

             }

         }

         return result.toString();

     }

     /**

      * Return true if relative links should not be redirected.

      *

      * @return Return true if a relative link should not be redirected.

      */

     private boolean shouldNotRedirectRelativeLinks() {

         return  this instanceof AnnotationTypeWriter ||

                 this instanceof ClassWriter ||

                 this instanceof PackageSummaryWriter;

     }

     /**

      * Suppose a piece of documentation has a relative link.  When you copy

      * that documetation to another place such as the index or class-use page,

      * that relative link will no longer work.  We should redirect those links

      * so that they will work again.

      * <p>

      * Here is the algorithm used to fix the link:

      * <p>

      * {@literal <relative link> => docRoot + <relative path to file> + <relative link> }

      * <p>

      * For example, suppose com.sun.javadoc.RootDoc has this link:

      * {@literal <a href="package-summary.html">The package Page</a> }

      * <p>

      * If this link appeared in the index, we would redirect

      * the link like this:

      *

      * {@literal <a href="./com/sun/javadoc/package-summary.html">The package Page</a>}

      *

      * @param doc the Doc object whose documentation is being written.

      * @param text the text being written.

      *

      * @return the text, with all the relative links redirected to work.

      */

     private String redirectRelativeLinks(Doc doc, String text) {

         if (doc == null || shouldNotRedirectRelativeLinks()) {

             return text;

         }

         String redirectPathFromRoot;

         if (doc instanceof ClassDoc) {

             redirectPathFromRoot = DirectoryManager.getDirectoryPath(((ClassDoc) doc).containingPackage());

         } else if (doc instanceof MemberDoc) {

             redirectPathFromRoot = DirectoryManager.getDirectoryPath(((MemberDoc) doc).containingPackage());

         } else if (doc instanceof PackageDoc) {

             redirectPathFromRoot = DirectoryManager.getDirectoryPath((PackageDoc) doc);

         } else {

             return text;

         }

         if (! redirectPathFromRoot.endsWith(DirectoryManager.URL_FILE_SEPARATOR)) {

             redirectPathFromRoot += DirectoryManager.URL_FILE_SEPARATOR;

         }

         //Redirect all relative links.

         int end, begin = text.toLowerCase().indexOf("<a");

         if(begin >= 0){

             StringBuilder textBuff = new StringBuilder(text);

             while(begin >=0){

                 if (textBuff.length() > begin + 2 && ! Character.isWhitespace(textBuff.charAt(begin+2))) {

                     begin = textBuff.toString().toLowerCase().indexOf("<a", begin + 1);

                     continue;

                 }

                 begin = textBuff.indexOf("=", begin) + 1;

                 end = textBuff.indexOf(">", begin +1);

                 if(begin == 0){

                     //Link has no equal symbol.

                     configuration.root.printWarning(

                         doc.position(),

                         configuration.getText("doclet.malformed_html_link_tag", text));

                     break;

                 }

                 if (end == -1) {

                     //Break without warning.  This <a> tag is not necessarily malformed.  The text

                     //might be missing '>' character because the href has an inline tag.

                     break;

                 }

                 if(textBuff.substring(begin, end).indexOf("\"") != -1){

                     begin = textBuff.indexOf("\"", begin) + 1;

                     end = textBuff.indexOf("\"", begin +1);

                     if(begin == 0 || end == -1){

                         //Link is missing a quote.

                         break;

                     }

                 }

                 String relativeLink = textBuff.substring(begin, end);

                 if(!(relativeLink.toLowerCase().startsWith("mailto:") ||

                      relativeLink.toLowerCase().startsWith("http:") ||

                      relativeLink.toLowerCase().startsWith("https:") ||

                      relativeLink.toLowerCase().startsWith("file:"))){

                      relativeLink = "{@"+(new DocRootTaglet()).getName() + "}"

                         + redirectPathFromRoot

                         + relativeLink;

                     textBuff.replace(begin, end, relativeLink);

                 }

                 begin = textBuff.toString().toLowerCase().indexOf("<a", begin + 1);

             }

             return textBuff.toString();

         }

         return text;

     }

     public String removeNonInlineHtmlTags(String text) {

         if (text.indexOf('<') < 0) {

             return text;

         }

         String noninlinetags[] = { "<ul>", "</ul>", "<ol>", "</ol>",

                 "<dl>", "</dl>", "<table>", "</table>",

                 "<tr>", "</tr>", "<td>", "</td>",

                 "<th>", "</th>", "<p>", "</p>",

                 "<li>", "</li>", "<dd>", "</dd>",

                 "<dir>", "</dir>", "<dt>", "</dt>",

                 "<h1>", "</h1>", "<h2>", "</h2>",

                 "<h3>", "</h3>", "<h4>", "</h4>",

                 "<h5>", "</h5>", "<h6>", "</h6>",

                 "<pre>", "</pre>", "<menu>", "</menu>",

                 "<listing>", "</listing>", "<hr>",

                 "<blockquote>", "</blockquote>",

                 "<center>", "</center>",

                 "<UL>", "</UL>", "<OL>", "</OL>",

                 "<DL>", "</DL>", "<TABLE>", "</TABLE>",

                 "<TR>", "</TR>", "<TD>", "</TD>",

                 "<TH>", "</TH>", "<P>", "</P>",

                 "<LI>", "</LI>", "<DD>", "</DD>",

                 "<DIR>", "</DIR>", "<DT>", "</DT>",

                 "<H1>", "</H1>", "<H2>", "</H2>",

                 "<H3>", "</H3>", "<H4>", "</H4>",

                 "<H5>", "</H5>", "<H6>", "</H6>",

                 "<PRE>", "</PRE>", "<MENU>", "</MENU>",

                 "<LISTING>", "</LISTING>", "<HR>",

                 "<BLOCKQUOTE>", "</BLOCKQUOTE>",

                 "<CENTER>", "</CENTER>"

         };

         for (int i = 0; i < noninlinetags.length; i++) {

             text = replace(text, noninlinetags[i], "");

         }

         return text;

     }

     public String replace(String text, String tobe, String by) {

         while (true) {

             int startindex = text.indexOf(tobe);

             if (startindex < 0) {

                 return text;

             }

             int endindex = startindex + tobe.length();

             StringBuilder replaced = new StringBuilder();

             if (startindex > 0) {

                 replaced.append(text.substring(0, startindex));

             }

             replaced.append(by);

             if (text.length() > endindex) {

                 replaced.append(text.substring(endindex));

             }

             text = replaced.toString();

         }

     }

     /**

      * Returns a link to the stylesheet file.

      *

      * @return an HtmlTree for the lINK tag which provides the stylesheet location

      */

     public HtmlTree getStyleSheetProperties() {

         String filename = configuration.stylesheetfile;

         if (filename.length() > 0) {

             File stylefile = new File(filename);

             String parent = stylefile.getParent();

             filename = (parent == null)?

                 filename:

                 filename.substring(parent.length() + 1);

         } else {

             filename = "stylesheet.css";

         }

         filename = relativePath + filename;

         HtmlTree link = HtmlTree.LINK("stylesheet", "text/css", filename, "Style");

         return link;

     }

     /**

      * According to

      * <cite>The Java&trade; Language Specification</cite>,

      * all the outer classes and static nested classes are core classes.

      */

     public boolean isCoreClass(ClassDoc cd) {

         return cd.containingClass() == null || cd.isStatic();

     }

     /**

      * Adds the annotatation types for the given packageDoc.

      *

      * @param packageDoc the package to write annotations for.

      * @param htmltree the documentation tree to which the annotation info will be

      *        added

      */

     public void addAnnotationInfo(PackageDoc packageDoc, Content htmltree) {

         addAnnotationInfo(packageDoc, packageDoc.annotations(), htmltree);

     }

     /**

      * Adds the annotatation types for the given doc.

      *

      * @param doc the package to write annotations for

      * @param htmltree the content tree to which the annotation types will be added

      */

     public void addAnnotationInfo(ProgramElementDoc doc, Content htmltree) {

         addAnnotationInfo(doc, doc.annotations(), htmltree);

     }

     /**

      * Add the annotatation types for the given doc and parameter.

      *

      * @param indent the number of spaces to indent the parameters.

      * @param doc the doc to write annotations for.

      * @param param the parameter to write annotations for.

      * @param tree the content tree to which the annotation types will be added

      */

     public boolean addAnnotationInfo(int indent, Doc doc, Parameter param,

             Content tree) {

         return addAnnotationInfo(indent, doc, param.annotations(), false, tree);

     }

     /**

      * Adds the annotatation types for the given doc.

      *

      * @param doc the doc to write annotations for.

      * @param descList the array of {@link AnnotationDesc}.

      * @param htmltree the documentation tree to which the annotation info will be

      *        added

      */

     private void addAnnotationInfo(Doc doc, AnnotationDesc[] descList,

             Content htmltree) {

         addAnnotationInfo(0, doc, descList, true, htmltree);

     }

     /**

      * Adds the annotatation types for the given doc.

      *

      * @param indent the number of extra spaces to indent the annotations.

      * @param doc the doc to write annotations for.

      * @param descList the array of {@link AnnotationDesc}.

      * @param htmltree the documentation tree to which the annotation info will be

      *        added

      */

     private boolean addAnnotationInfo(int indent, Doc doc,

             AnnotationDesc[] descList, boolean lineBreak, Content htmltree) {

         List<String> annotations = getAnnotations(indent, descList, lineBreak);

         if (annotations.size() == 0) {

             return false;

         }

         Content annotationContent;

         for (Iterator<String> iter = annotations.iterator(); iter.hasNext();) {

             annotationContent = new RawHtml(iter.next());

             htmltree.addContent(annotationContent);

         }

         return true;

     }

    /**

      * Return the string representations of the annotation types for

      * the given doc.

      *

      * @param indent the number of extra spaces to indent the annotations.

      * @param descList the array of {@link AnnotationDesc}.

      * @param linkBreak if true, add new line between each member value.

      * @return an array of strings representing the annotations being

      *         documented.

      */

     private List<String> getAnnotations(int indent, AnnotationDesc[] descList, boolean linkBreak) {

         List<String> results = new ArrayList<String>();

         StringBuilder annotation;

         for (int i = 0; i < descList.length; i++) {

             AnnotationTypeDoc annotationDoc = descList[i].annotationType();

             if (! Util.isDocumentedAnnotation(annotationDoc)){

                 continue;

             }

             annotation = new StringBuilder();

             LinkInfoImpl linkInfo = new LinkInfoImpl(

                 LinkInfoImpl.CONTEXT_ANNOTATION, annotationDoc);

             linkInfo.label = "@" + annotationDoc.name();

             annotation.append(getLink(linkInfo));

             AnnotationDesc.ElementValuePair[] pairs = descList[i].elementValues();

             if (pairs.length > 0) {

                 annotation.append('(');

                 for (int j = 0; j < pairs.length; j++) {

                     if (j > 0) {

                         annotation.append(",");

                         if (linkBreak) {

                             annotation.append(DocletConstants.NL);

                             int spaces = annotationDoc.name().length() + 2;

                             for (int k = 0; k < (spaces + indent); k++) {

                                 annotation.append(' ');

                             }

                         }

                     }

                     annotation.append(getDocLink(LinkInfoImpl.CONTEXT_ANNOTATION,

                         pairs[j].element(), pairs[j].element().name(), false));

                     annotation.append('=');

                     AnnotationValue annotationValue = pairs[j].value();

                     List<AnnotationValue> annotationTypeValues = new ArrayList<AnnotationValue>();

                     if (annotationValue.value() instanceof AnnotationValue[]) {

                         AnnotationValue[] annotationArray =

                             (AnnotationValue[]) annotationValue.value();

                         for (int k = 0; k < annotationArray.length; k++) {

                             annotationTypeValues.add(annotationArray[k]);

                         }

                     } else {

                         annotationTypeValues.add(annotationValue);

                     }

                     annotation.append(annotationTypeValues.size() == 1 ? "" : "{");

                     for (Iterator<AnnotationValue> iter = annotationTypeValues.iterator(); iter.hasNext(); ) {

                         annotation.append(annotationValueToString(iter.next()));

                         annotation.append(iter.hasNext() ? "," : "");

                     }

                     annotation.append(annotationTypeValues.size() == 1 ? "" : "}");

                 }

                 annotation.append(")");

             }

             annotation.append(linkBreak ? DocletConstants.NL : "");

             results.add(annotation.toString());

         }

         return results;

     }

     private String annotationValueToString(AnnotationValue annotationValue) {

         if (annotationValue.value() instanceof Type) {

             Type type = (Type) annotationValue.value();

             if (type.asClassDoc() != null) {

                 LinkInfoImpl linkInfo = new LinkInfoImpl(

                     LinkInfoImpl.CONTEXT_ANNOTATION, type);

                     linkInfo.label = (type.asClassDoc().isIncluded() ?

                         type.typeName() :

                         type.qualifiedTypeName()) + type.dimension() + ".class";

                 return getLink(linkInfo);

             } else {

                 return type.typeName() + type.dimension() + ".class";

             }

         } else if (annotationValue.value() instanceof AnnotationDesc) {

             List<String> list = getAnnotations(0,

                 new AnnotationDesc[]{(AnnotationDesc) annotationValue.value()},

                     false);

             StringBuilder buf = new StringBuilder();

             for (String s: list) {

                 buf.append(s);

             }

             return buf.toString();

         } else if (annotationValue.value() instanceof MemberDoc) {

             return getDocLink(LinkInfoImpl.CONTEXT_ANNOTATION,

                 (MemberDoc) annotationValue.value(),

                 ((MemberDoc) annotationValue.value()).name(), false);

          } else {

             return annotationValue.toString();

          }

     }

     /**

      * Return the configuation for this doclet.

      *

      * @return the configuration for this doclet.

      */

     public Configuration configuration() {

         return configuration;

     }

 }