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

 /*

  * Copyright (c) 2001, 2011, 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

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

 import java.io.*;

 import javax.tools.FileObject;

 import com.sun.javadoc.*;

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

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

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

 /**

  * Converts Java Source Code to HTML.

  *

  * This code is not part of an API.

  * It is implementation that is subject to change.

  * Do not use it as an API

  *

  * @author Jamie Ho

  * @author Bhavesh Patel (Modified)

  * @since 1.4

  */

 public class SourceToHTMLConverter {

     /**

      * The number of trailing blank lines at the end of the page.

      * This is inserted so that anchors at the bottom of small pages

      * can be reached.

      */

     private static final int NUM_BLANK_LINES = 60;

     /**

      * New line to be added to the documentation.

      */

     private static final Content NEW_LINE = new RawHtml(DocletConstants.NL);

     /**

      * Relative path from the documentation root to the file that is being

      * generated.

      */

     private static String relativePath = "";

     /**

      * Source is converted to HTML using static methods below.

      */

     private SourceToHTMLConverter() {}

     /**

      * Convert the Classes in the given RootDoc to an HTML.

      *

      * @param configuration the configuration.

      * @param rd the RootDoc to convert.

      * @param outputdir the name of the directory to output to.

      */

     public static void convertRoot(ConfigurationImpl configuration, RootDoc rd,

             String outputdir) {

         if (rd == null || outputdir == null) {

             return;

         }

         PackageDoc[] pds = rd.specifiedPackages();

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

             convertPackage(configuration, pds[i], outputdir);

         }

         ClassDoc[] cds = rd.specifiedClasses();

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

             convertClass(configuration, cds[i],

                     getPackageOutputDir(outputdir, cds[i].containingPackage()));

         }

     }

     /**

      * Convert the Classes in the given Package to an HTML.

      *

      * @param configuration the configuration.

      * @param pd the Package to convert.

      * @param outputdir the name of the directory to output to.

      */

     public static void convertPackage(ConfigurationImpl configuration, PackageDoc pd,

             String outputdir) {

         if (pd == null || outputdir == null) {

             return;

         }

         String classOutputdir = getPackageOutputDir(outputdir, pd);

         ClassDoc[] cds = pd.allClasses();

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

             convertClass(configuration, cds[i], classOutputdir);

         }

     }

     /**

      * Return the directory write output to for the given package.

      *

      * @param outputDir the directory to output to.

      * @param pd the Package to generate output for.

      * @return the package output directory as a String.

      */

     private static String getPackageOutputDir(String outputDir, PackageDoc pd) {

         return outputDir + File.separator +

             DirectoryManager.getDirectoryPath(pd) + File.separator;

     }

     /**

      * Convert the given Class to an HTML.

      *

      * @param configuration the configuration.

      * @param cd the class to convert.

      * @param outputdir the name of the directory to output to.

      */

     public static void convertClass(ConfigurationImpl configuration, ClassDoc cd,

             String outputdir) {

         if (cd == null || outputdir == null) {

             return;

         }

         try {

             SourcePosition sp = cd.position();

             if (sp == null)

                 return;

             Reader r;

             // temp hack until we can update SourcePosition API.

             if (sp instanceof com.sun.tools.javadoc.SourcePositionImpl) {

                 FileObject fo = ((com.sun.tools.javadoc.SourcePositionImpl) sp).fileObject();

                 if (fo == null)

                     return;

                 r = fo.openReader(true);

             } else {

                 File file = sp.file();

                 if (file == null)

                     return;

                 r = new FileReader(file);

             }

             LineNumberReader reader = new LineNumberReader(r);

             int lineno = 1;

             String line;

             relativePath = DirectoryManager.getRelativePath(DocletConstants.SOURCE_OUTPUT_DIR_NAME) +

                     DirectoryManager.getRelativePath(cd.containingPackage());

             Content body = getHeader();

             Content pre = new HtmlTree(HtmlTag.PRE);

             try {

                 while ((line = reader.readLine()) != null) {

                     addLineNo(pre, lineno);

                     addLine(pre, line, configuration.sourcetab, lineno);

                     lineno++;

                 }

             } finally {

                 reader.close();

             }

             addBlankLines(pre);

             Content div = HtmlTree.DIV(HtmlStyle.sourceContainer, pre);

             body.addContent(div);

             writeToFile(body, outputdir, cd.name(), configuration);

         } catch (Exception e){

             e.printStackTrace();

         }

     }

     /**

      * Write the output to the file.

      *

      * @param body the documentation content to be written to the file.

      * @param outputDir the directory to output to.

      * @param className the name of the class that I am converting to HTML.

      * @param configuration the Doclet configuration to pass notices to.

      */

     private static void writeToFile(Content body, String outputDir,

             String className, ConfigurationImpl configuration) throws IOException {

         Content htmlDocType = DocType.Transitional();

         Content head = new HtmlTree(HtmlTag.HEAD);

         head.addContent(HtmlTree.TITLE(new StringContent(

                 configuration.getText("doclet.Window_Source_title"))));

         head.addContent(getStyleSheetProperties(configuration));

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

                 head, body);

         Content htmlDocument = new HtmlDocument(htmlDocType, htmlTree);

         File dir = new File(outputDir);

         dir.mkdirs();

         File newFile = new File(dir, className + ".html");

         configuration.message.notice("doclet.Generating_0", newFile.getPath());

         FileOutputStream fout = new FileOutputStream(newFile);

         BufferedWriter bw = new BufferedWriter(new OutputStreamWriter(fout));

         bw.write(htmlDocument.toString());

         bw.close();

         fout.close();

     }

     /**

      * Returns a link to the stylesheet file.

      *

      * @param configuration the doclet configuration for the current run of javadoc

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

      */

     public static HtmlTree getStyleSheetProperties(ConfigurationImpl configuration) {

         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;

     }

     /**

      * Get the header.

      *

      * @return the header content for the HTML file

      */

     private static Content getHeader() {

         return new HtmlTree(HtmlTag.BODY);

     }

     /**

      * Add the line numbers for the source code.

      *

      * @param pre the content tree to which the line number will be added

      * @param lineno The line number

      */

     private static void addLineNo(Content pre, int lineno) {

         HtmlTree span = new HtmlTree(HtmlTag.SPAN);

         span.addStyle(HtmlStyle.sourceLineNo);

         if (lineno < 10) {

             span.addContent("00" + Integer.toString(lineno));

         } else if (lineno < 100) {

             span.addContent("0" + Integer.toString(lineno));

         } else {

             span.addContent(Integer.toString(lineno));

         }

         pre.addContent(span);

     }

     /**

      * Add a line from source to the HTML file that is generated.

      *

      * @param pre the content tree to which the line will be added.

      * @param line the string to format.

      * @param tabLength the number of spaces for each tab.

      * @param currentLineNo the current number.

      */

     private static void addLine(Content pre, String line, int tabLength,

             int currentLineNo) {

         if (line != null) {

             StringBuilder lineBuffer = new StringBuilder(Util.escapeHtmlChars(line));

             Util.replaceTabs(tabLength, lineBuffer);

             pre.addContent(new RawHtml(lineBuffer.toString()));

             Content anchor = HtmlTree.A_NAME("line." + Integer.toString(currentLineNo));

             pre.addContent(anchor);

             pre.addContent(NEW_LINE);

         }

     }

     /**

      * Add trailing blank lines at the end of the page.

      *

      * @param pre the content tree to which the blank lines will be added.

      */

     private static void addBlankLines(Content pre) {

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

             pre.addContent(NEW_LINE);

         }

     }

     /**

      * Given a <code>Doc</code>, return an anchor name for it.

      *

      * @param d the <code>Doc</code> to check.

      * @return the name of the anchor.

      */

     public static String getAnchorName(Doc d) {

         return "line." + d.position().line();

     }

 }