com.sun.tools.doclets.formats.html.SourceToHTMLConverter Maven / Gradle / Ivy
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/*
* Copyright (c) 2001, 2015, 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 javax.tools.FileObject;
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.util.*;
/**
* Converts Java Source Code to HTML.
*
* 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.
*
* @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 String NEW_LINE = DocletConstants.NL;
private final ConfigurationImpl configuration;
private final Utils utils;
private final RootDoc rootDoc;
private DocPath outputdir;
/**
* Relative path from the documentation root to the file that is being
* generated.
*/
private DocPath relativePath = DocPath.empty;
private SourceToHTMLConverter(ConfigurationImpl configuration, RootDoc rd,
DocPath outputdir) {
this.configuration = configuration;
this.utils = configuration.utils;
this.rootDoc = rd;
this.outputdir = outputdir;
}
/**
* 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,
DocPath outputdir) {
new SourceToHTMLConverter(configuration, rd, outputdir).generate();
}
void generate() {
if (rootDoc == null || outputdir == null) {
return;
}
for (PackageDoc pd : rootDoc.specifiedPackages()) {
// If -nodeprecated option is set and the package is marked as deprecated,
// do not convert the package files to HTML.
if (!(configuration.nodeprecated && utils.isDeprecated(pd)))
convertPackage(pd, outputdir);
}
for (ClassDoc cd : rootDoc.specifiedClasses()) {
// If -nodeprecated option is set and the class is marked as deprecated
// or the containing package is deprecated, do not convert the
// package files to HTML.
if (!(configuration.nodeprecated &&
(utils.isDeprecated(cd) || utils.isDeprecated(cd.containingPackage()))))
convertClass(cd, outputdir);
}
}
/**
* Convert the Classes in the given Package to an HTML.
*
* @param pd the Package to convert.
* @param outputdir the name of the directory to output to.
*/
public void convertPackage(PackageDoc pd, DocPath outputdir) {
if (pd == null) {
return;
}
for (ClassDoc cd : pd.allClasses()) {
// If -nodeprecated option is set and the class is marked as deprecated,
// do not convert the package files to HTML. We do not check for
// containing package deprecation since it is already check in
// the calling method above.
if (!(configuration.nodeprecated && utils.isDeprecated(cd)))
convertClass(cd, outputdir);
}
}
/**
* Convert the given Class to an HTML.
*
* @param cd the class to convert.
* @param outputdir the name of the directory to output to.
*/
public void convertClass(ClassDoc cd, DocPath outputdir) {
if (cd == 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);
}
int lineno = 1;
String line;
relativePath = DocPaths.SOURCE_OUTPUT
.resolve(DocPath.forPackage(cd))
.invert();
Content body = getHeader();
Content pre = new HtmlTree(HtmlTag.PRE);
try (LineNumberReader reader = new LineNumberReader(r)) {
while ((line = reader.readLine()) != null) {
addLineNo(pre, lineno);
addLine(pre, line, lineno);
lineno++;
}
}
addBlankLines(pre);
Content div = HtmlTree.DIV(HtmlStyle.sourceContainer, pre);
body.addContent((configuration.allowTag(HtmlTag.MAIN)) ? HtmlTree.MAIN(div) : div);
writeToFile(body, outputdir.resolve(DocPath.forClass(cd)));
} catch (IOException e) {
e.printStackTrace();
}
}
/**
* Write the output to the file.
*
* @param body the documentation content to be written to the file.
* @param path the path for the file.
*/
private void writeToFile(Content body, DocPath path) throws IOException {
Content htmlDocType = configuration.isOutputHtml5()
? DocType.HTML5
: DocType.TRANSITIONAL;
Content head = new HtmlTree(HtmlTag.HEAD);
head.addContent(HtmlTree.TITLE(new StringContent(
configuration.getText("doclet.Window_Source_title"))));
head.addContent(getStyleSheetProperties());
Content htmlTree = HtmlTree.HTML(configuration.getLocale().getLanguage(),
head, body);
Content htmlDocument = new HtmlDocument(htmlDocType, htmlTree);
configuration.message.notice("doclet.Generating_0", path.getPath());
DocFile df = DocFile.createFileForOutput(configuration, path);
try (Writer w = df.openWriter()) {
htmlDocument.write(w, true);
}
}
/**
* 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;
DocPath stylesheet;
if (filename.length() > 0) {
DocFile file = DocFile.createFileForInput(configuration, filename);
stylesheet = DocPath.create(file.getName());
} else {
stylesheet = DocPaths.STYLESHEET;
}
DocPath p = relativePath.resolve(stylesheet);
HtmlTree link = HtmlTree.LINK("stylesheet", "text/css", p.getPath(), "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 currentLineNo the current number.
*/
private void addLine(Content pre, String line, int currentLineNo) {
if (line != null) {
Content anchor = HtmlTree.A(configuration.htmlVersion,
"line." + Integer.toString(currentLineNo),
new StringContent(utils.replaceTabs(configuration, line)));
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 Doc, return an anchor name for it.
*
* @param d the Doc to check.
* @return the name of the anchor.
*/
public static String getAnchorName(Doc d) {
return "line." + d.position().line();
}
}