langtools/src/jdk.javadoc/share/classes/jdk/javadoc/internal/doclets/toolkit/BaseConfiguration.java
changeset 45417 f7479ee8de69
parent 45157 f5f796453339
child 45420 036dbf8b3817
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/langtools/src/jdk.javadoc/share/classes/jdk/javadoc/internal/doclets/toolkit/BaseConfiguration.java	Mon Jun 05 13:45:34 2017 -0700
@@ -0,0 +1,1289 @@
+/*
+ * Copyright (c) 1997, 2017, 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 jdk.javadoc.internal.doclets.toolkit;
+
+import java.io.*;
+import java.lang.ref.*;
+import java.util.*;
+
+import javax.lang.model.element.Element;
+import javax.lang.model.element.ModuleElement;
+import javax.lang.model.element.PackageElement;
+import javax.lang.model.element.TypeElement;
+import javax.lang.model.util.SimpleElementVisitor9;
+import javax.tools.JavaFileManager;
+import javax.tools.JavaFileObject;
+
+import com.sun.source.util.DocTreePath;
+import com.sun.tools.javac.util.DefinedBy;
+import com.sun.tools.javac.util.DefinedBy.Api;
+import jdk.javadoc.doclet.Doclet;
+import jdk.javadoc.doclet.DocletEnvironment;
+import jdk.javadoc.doclet.Reporter;
+import jdk.javadoc.internal.doclets.toolkit.builders.BuilderFactory;
+import jdk.javadoc.internal.doclets.toolkit.taglets.TagletManager;
+import jdk.javadoc.internal.doclets.toolkit.util.DocFile;
+import jdk.javadoc.internal.doclets.toolkit.util.DocFileFactory;
+import jdk.javadoc.internal.doclets.toolkit.util.DocFileIOException;
+import jdk.javadoc.internal.doclets.toolkit.util.DocletConstants;
+import jdk.javadoc.internal.doclets.toolkit.util.Extern;
+import jdk.javadoc.internal.doclets.toolkit.util.Group;
+import jdk.javadoc.internal.doclets.toolkit.util.MetaKeywords;
+import jdk.javadoc.internal.doclets.toolkit.util.SimpleDocletException;
+import jdk.javadoc.internal.doclets.toolkit.util.TypeElementCatalog;
+import jdk.javadoc.internal.doclets.toolkit.util.Utils;
+import jdk.javadoc.internal.doclets.toolkit.util.VisibleMemberMap;
+import jdk.javadoc.internal.doclets.toolkit.util.VisibleMemberMap.GetterSetter;
+import jdk.javadoc.internal.doclets.toolkit.util.VisibleMemberMap.Kind;
+
+import static javax.tools.Diagnostic.Kind.*;
+
+/**
+ * Configure the output based on the options. Doclets should sub-class
+ * BaseConfiguration, to configure and add their own options. This class contains
+ * all user options which are supported by the 1.1 doclet and the standard
+ * doclet.
+ *
+ *  <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>
+ *
+ * @author Robert Field.
+ * @author Atul Dambalkar.
+ * @author Jamie Ho
+ */
+public abstract class BaseConfiguration {
+    /**
+     * The doclet that created this configuration.
+     */
+    public final Doclet doclet;
+
+    /**
+     * The factory for builders.
+     */
+    protected BuilderFactory builderFactory;
+
+    /**
+     * The taglet manager.
+     */
+    public TagletManager tagletManager;
+
+    /**
+     * The path to the builder XML input file.
+     */
+    public String builderXMLPath;
+
+    /**
+     * The default path to the builder XML.
+     */
+    public static final String DEFAULT_BUILDER_XML = "resources/doclet.xml";
+
+    /**
+     * The path to Taglets
+     */
+    public String tagletpath = null;
+
+    /**
+     * This is true if option "-serialwarn" is used. Defualt value is false to
+     * suppress excessive warnings about serial tag.
+     */
+    public boolean serialwarn = false;
+
+    /**
+     * The specified amount of space between tab stops.
+     */
+    public int sourcetab;
+
+    public String tabSpaces;
+
+    /**
+     * True if we should generate browsable sources.
+     */
+    public boolean linksource = false;
+
+    /**
+     * True if command line option "-nosince" is used. Default value is
+     * false.
+     */
+    public boolean nosince = false;
+
+    /**
+     * True if we should recursively copy the doc-file subdirectories
+     */
+    public boolean copydocfilesubdirs = false;
+
+    /**
+     * Maintain backward compatibility with previous javadoc version
+     */
+    public boolean backwardCompatibility = true;
+
+    /**
+     * The META charset tag used for cross-platform viewing.
+     */
+    public String charset = "";
+
+    /**
+     * True if user wants to add member names as meta keywords.
+     * Set to false because meta keywords are ignored in general
+     * by most Internet search engines.
+     */
+    public boolean keywords = false;
+
+    /**
+     * The meta tag keywords instance.
+     */
+    public final MetaKeywords metakeywords;
+
+    /**
+     * The set of doc-file subdirectories to exclude
+     */
+    protected Set<String> excludedDocFileDirs;
+
+    /**
+     * The set of qualifiers to exclude
+     */
+    protected Set<String> excludedQualifiers;
+
+    /**
+     * The doclet environment.
+     */
+    public DocletEnvironment docEnv;
+
+    /**
+     * An utility class for commonly used helpers
+     */
+    public Utils utils;
+
+    /**
+     * All the temporary accessors to javac internals.
+     */
+    public WorkArounds workArounds;
+
+    /**
+     * Destination directory name, in which doclet will generate the entire
+     * documentation. Default is current directory.
+     */
+    public String destDirName = "";
+
+    /**
+     * Destination directory name, in which doclet will copy the doc-files to.
+     */
+    public String docFileDestDirName = "";
+
+    /**
+     * Encoding for this document. Default is default encoding for this
+     * platform.
+     */
+    public String docencoding = null;
+
+    /**
+     * True if user wants to suppress descriptions and tags.
+     */
+    public boolean nocomment = false;
+
+    /**
+     * Encoding for this document. Default is default encoding for this
+     * platform.
+     */
+    public String encoding = null;
+
+    /**
+     * Generate author specific information for all the classes if @author
+     * tag is used in the doc comment and if -author option is used.
+     * <code>showauthor</code> is set to true if -author option is used.
+     * Default is don't show author information.
+     */
+    public boolean showauthor = false;
+
+    /**
+     * Generate documentation for JavaFX getters and setters automatically
+     * by copying it from the appropriate property definition.
+     */
+    public boolean javafx = false;
+
+    /**
+     * Generate version specific information for the all the classes
+     * if @version tag is used in the doc comment and if -version option is
+     * used. <code>showversion</code> is set to true if -version option is
+     * used.Default is don't show version information.
+     */
+    public boolean showversion = false;
+
+    /**
+     * Allow JavaScript in doc comments.
+     */
+    private boolean allowScriptInComments = false;
+
+    /**
+     * Sourcepath from where to read the source files. Default is classpath.
+     *
+     */
+    public String sourcepath = "";
+
+    /**
+     * Generate modules documentation if more than one module is present.
+     */
+    public boolean showModules = false;
+
+    /**
+     * Don't generate deprecated API information at all, if -nodeprecated
+     * option is used. <code>nodepracted</code> is set to true if
+     * -nodeprecated option is used. Default is generate deprected API
+     * information.
+     */
+    public boolean nodeprecated = false;
+
+    /**
+     * The catalog of classes specified on the command-line
+     */
+    public TypeElementCatalog typeElementCatalog;
+
+    /**
+     * True if user wants to suppress time stamp in output.
+     * Default is false.
+     */
+    public boolean notimestamp= false;
+
+    /**
+     * The package grouping instance.
+     */
+    public final Group group = new Group(this);
+
+    /**
+     * The tracker of external package links.
+     */
+    public final Extern extern = new Extern(this);
+
+    public  Reporter reporter;
+
+    public Locale locale;
+
+    /**
+     * Suppress all messages
+     */
+    public boolean quiet = false;
+
+    private String urlForLink;
+
+    private String pkglistUrlForLink;
+
+    private String urlForLinkOffline;
+
+    private String pkglistUrlForLinkOffline;
+
+    public boolean dumpOnError = false;
+
+    private List<GroupContainer> groups;
+
+    private final Map<TypeElement, EnumMap<Kind, Reference<VisibleMemberMap>>> typeElementMemberCache;
+
+    public abstract Messages getMessages();
+    public abstract Resources getResources();
+
+    /**
+     * Return the build date for the doclet.
+     *
+     * @return the build date
+     */
+    public abstract String getDocletSpecificBuildDate();
+
+    /**
+     * This method should be defined in all those doclets (configurations),
+     * which want to derive themselves from this BaseConfiguration. This method
+     * can be used to finish up the options setup.
+     *
+     * @return true if successful and false otherwise
+     */
+
+    public abstract boolean finishOptionSettings();
+
+    public CommentUtils cmtUtils;
+
+    /**
+     * A sorted set of included packages.
+     */
+    public SortedSet<PackageElement> packages = null;
+
+    public OverviewElement overviewElement;
+
+    // The following three fields provide caches for use by all instances of VisibleMemberMap.
+    public final Map<TypeElement, List<Element>> propertiesCache = new HashMap<>();
+    public final Map<Element, Element> classPropertiesMap = new HashMap<>();
+    public final Map<Element, GetterSetter> getterSetterMap = new HashMap<>();
+
+    public DocFileFactory docFileFactory;
+
+    /**
+     * A sorted map, giving the (specified|included|other) packages for each module.
+     */
+    public SortedMap<ModuleElement, Set<PackageElement>> modulePackages;
+
+   /**
+    * The list of known modules, that should be documented.
+    */
+    public SortedSet<ModuleElement> modules;
+
+    protected static final String sharedResourceBundleName =
+            "jdk.javadoc.internal.doclets.toolkit.resources.doclets";
+    /**
+     * Constructs the configurations needed by the doclet.
+     * @param doclet the doclet that created this configuration
+     */
+    public BaseConfiguration(Doclet doclet) {
+        this.doclet = doclet;
+        excludedDocFileDirs = new HashSet<>();
+        excludedQualifiers = new HashSet<>();
+        setTabWidth(DocletConstants.DEFAULT_TAB_STOP_LENGTH);
+        metakeywords = new MetaKeywords(this);
+        groups = new ArrayList<>(0);
+        typeElementMemberCache = new HashMap<>();
+    }
+
+    private boolean initialized = false;
+
+    protected void initConfiguration(DocletEnvironment docEnv) {
+        if (initialized) {
+            throw new IllegalStateException("configuration previously initialized");
+        }
+        initialized = true;
+        this.docEnv = docEnv;
+        overviewElement = new OverviewElement(docEnv);
+        Splitter specifiedSplitter = new Splitter(docEnv, false);
+        specifiedModuleElements = Collections.unmodifiableSet(specifiedSplitter.mset);
+        specifiedPackageElements = Collections.unmodifiableSet(specifiedSplitter.pset);
+        specifiedTypeElements = Collections.unmodifiableSet(specifiedSplitter.tset);
+
+        Splitter includedSplitter = new Splitter(docEnv, true);
+        includedModuleElements = Collections.unmodifiableSet(includedSplitter.mset);
+        includedPackageElements = Collections.unmodifiableSet(includedSplitter.pset);
+        includedTypeElements = Collections.unmodifiableSet(includedSplitter.tset);
+    }
+
+    /**
+     * Return the builder factory for this doclet.
+     *
+     * @return the builder factory for this doclet.
+     */
+    public BuilderFactory getBuilderFactory() {
+        if (builderFactory == null) {
+            builderFactory = new BuilderFactory(this);
+        }
+        return builderFactory;
+    }
+
+    public Reporter getReporter() {
+        return this.reporter;
+    }
+
+    private Set<ModuleElement> specifiedModuleElements;
+    public Set<ModuleElement> getSpecifiedModuleElements() {
+        return specifiedModuleElements;
+    }
+
+    private Set<PackageElement> specifiedPackageElements;
+    public Set<PackageElement> getSpecifiedPackageElements() {
+        return specifiedPackageElements;
+    }
+
+    private Set<TypeElement> specifiedTypeElements;
+    public Set<TypeElement> getSpecifiedTypeElements() {
+        return specifiedTypeElements;
+    }
+
+    private Set<ModuleElement> includedModuleElements;
+    public Set<ModuleElement> getIncludedModuleElements() {
+        return includedModuleElements;
+    }
+
+    private Set<PackageElement> includedPackageElements;
+    public Set<PackageElement> getIncludedPackageElements() {
+        return includedPackageElements;
+    }
+
+    private Set<TypeElement> includedTypeElements;
+    public Set<TypeElement> getIncludedTypeElements() {
+        return includedTypeElements;
+    }
+
+    private void initModules() {
+        // Build the modules structure used by the doclet
+        modules = new TreeSet<>(utils.makeModuleComparator());
+        modules.addAll(getSpecifiedModuleElements());
+
+        modulePackages = new TreeMap<>(utils.makeModuleComparator());
+        for (PackageElement p: packages) {
+            ModuleElement mdle = docEnv.getElementUtils().getModuleOf(p);
+            if (mdle != null && !mdle.isUnnamed()) {
+                Set<PackageElement> s = modulePackages
+                        .computeIfAbsent(mdle, m -> new TreeSet<>(utils.makePackageComparator()));
+                s.add(p);
+            }
+        }
+
+        for (PackageElement p: getIncludedPackageElements()) {
+            ModuleElement mdle = docEnv.getElementUtils().getModuleOf(p);
+            if (mdle != null && !mdle.isUnnamed()) {
+                Set<PackageElement> s = modulePackages
+                        .computeIfAbsent(mdle, m -> new TreeSet<>(utils.makePackageComparator()));
+                s.add(p);
+            }
+        }
+
+        // add entries for modules which may not have exported packages
+        modules.forEach((ModuleElement mdle) -> {
+            modulePackages.computeIfAbsent(mdle, m -> Collections.emptySet());
+        });
+
+        modules.addAll(modulePackages.keySet());
+        showModules = !modules.isEmpty();
+        for (Set<PackageElement> pkgs : modulePackages.values()) {
+            packages.addAll(pkgs);
+        }
+    }
+
+    private void initPackages() {
+        packages = new TreeSet<>(utils.makePackageComparator());
+        // add all the included packages
+        packages.addAll(includedPackageElements);
+    }
+
+    public Set<Doclet.Option> getSupportedOptions() {
+        Resources resources = getResources();
+        Doclet.Option[] options = {
+            new Option(resources, "-author") {
+                @Override
+                public boolean process(String opt, List<String> args) {
+                    showauthor = true;
+                    return true;
+                }
+            },
+            new Option(resources, "-d", 1) {
+                @Override
+                public boolean process(String opt, List<String> args) {
+                    destDirName = addTrailingFileSep(args.get(0));
+                    return true;
+                }
+            },
+            new Option(resources, "-docencoding", 1) {
+                @Override
+                public boolean process(String opt, List<String> args) {
+                    docencoding = args.get(0);
+                    return true;
+                }
+            },
+            new Option(resources, "-docfilessubdirs") {
+                @Override
+                public boolean process(String opt, List<String> args) {
+                    copydocfilesubdirs = true;
+                    return true;
+                }
+            },
+            new Hidden(resources, "-encoding", 1) {
+                @Override
+                public boolean process(String opt, List<String> args) {
+                    encoding = args.get(0);
+                    return true;
+                }
+            },
+            new Option(resources, "-excludedocfilessubdir", 1) {
+                @Override
+                public boolean process(String opt, List<String> args) {
+                    addToSet(excludedDocFileDirs, args.get(0));
+                    return true;
+                }
+            },
+            new Option(resources, "-group", 2) {
+                @Override
+                public boolean process(String opt, List<String> args) {
+                    groups.add(new GroupContainer(args.get(0), args.get(1)));
+                    return true;
+                }
+            },
+            new Option(resources, "--javafx -javafx") {
+                @Override
+                public boolean process(String opt, List<String> args) {
+                    javafx = true;
+                    return true;
+                }
+            },
+            new Option(resources, "-keywords") {
+                @Override
+                public boolean process(String opt, List<String> args) {
+                    keywords = true;
+                    return true;
+                }
+            },
+            new Option(resources, "-link", 1) {
+                @Override
+                public boolean process(String opt, List<String> args) {
+                    urlForLink = args.get(0);
+                    pkglistUrlForLink = urlForLink;
+                    return true;
+                }
+            },
+            new Option(resources, "-linksource") {
+                @Override
+                public boolean process(String opt, List<String> args) {
+                    linksource = true;
+                    return true;
+                }
+            },
+            new Option(resources, "-linkoffline", 2) {
+                @Override
+                public boolean process(String opt, List<String> args) {
+                    urlForLinkOffline = args.get(0);
+                    pkglistUrlForLinkOffline = args.get(1);
+                    return true;
+                }
+            },
+            new Option(resources, "-nocomment") {
+                @Override
+                public boolean process(String opt, List<String> args) {
+                    nocomment = true;
+                    return true;
+                }
+            },
+            new Option(resources, "-nodeprecated") {
+                @Override
+                public boolean process(String opt, List<String> args) {
+                    nodeprecated = true;
+                    return true;
+                }
+            },
+            new Option(resources, "-nosince") {
+                @Override
+                public boolean process(String opt, List<String> args) {
+                    nosince = true;
+                    return true;
+                }
+            },
+            new Option(resources, "-notimestamp") {
+                @Override
+                public boolean process(String opt, List<String> args) {
+                    notimestamp = true;
+                    return true;
+                }
+            },
+            new Option(resources, "-noqualifier", 1) {
+                @Override
+                public boolean process(String opt, List<String> args) {
+                    addToSet(excludedQualifiers, args.get(0));
+                    return true;
+                }
+            },
+            new Hidden(resources, "-quiet") {
+                @Override
+                public boolean process(String opt, List<String> args) {
+                    quiet = true;
+                    return true;
+                }
+            },
+            new Option(resources, "-serialwarn") {
+                @Override
+                public boolean process(String opt, List<String> args) {
+                    serialwarn = true;
+                    return true;
+                }
+            },
+            new Option(resources, "-sourcetab", 1) {
+                @Override
+                public boolean process(String opt, List<String> args) {
+                    linksource = true;
+                    try {
+                        setTabWidth(Integer.parseInt(args.get(0)));
+                    } catch (NumberFormatException e) {
+                             //Set to -1 so that warning will be printed
+                        //to indicate what is valid argument.
+                        sourcetab = -1;
+                    }
+                    if (sourcetab <= 0) {
+                        getMessages().warning("doclet.sourcetab_warning");
+                        setTabWidth(DocletConstants.DEFAULT_TAB_STOP_LENGTH);
+                    }
+                    return true;
+                }
+            },
+            new Option(resources, "-tag", 1) {
+                @Override
+                public boolean process(String opt, List<String> args) {
+                    ArrayList<String> list = new ArrayList<>();
+                    list.add(opt);
+                    list.add(args.get(0));
+                    customTagStrs.add(list);
+                    return true;
+                }
+            },
+             new Option(resources, "-taglet", 1) {
+                @Override
+                public boolean process(String opt, List<String> args) {
+                    ArrayList<String> list = new ArrayList<>();
+                    list.add(opt);
+                    list.add(args.get(0));
+                    customTagStrs.add(list);
+                    return true;
+                }
+            },
+            new Option(resources, "-tagletpath", 1) {
+                @Override
+                public boolean process(String opt, List<String> args) {
+                    tagletpath = args.get(0);
+                    return true;
+                }
+            },
+            new Option(resources, "-version") {
+                @Override
+                public boolean process(String opt, List<String> args) {
+                    showversion = true;
+                    return true;
+                }
+            },
+            new Hidden(resources, "--dump-on-error") {
+                @Override
+                public boolean process(String opt, List<String> args) {
+                    dumpOnError = true;
+                    return true;
+                }
+            },
+            new Option(resources, "--allow-script-in-comments") {
+                @Override
+                public boolean process(String opt, List<String> args) {
+                    allowScriptInComments = true;
+                    return true;
+                }
+            }
+        };
+        Set<Doclet.Option> set = new TreeSet<>();
+        set.addAll(Arrays.asList(options));
+        return set;
+    }
+
+    final LinkedHashSet<List<String>> customTagStrs = new LinkedHashSet<>();
+
+    /*
+     * when this is called all the option have been set, this method,
+     * initializes certain components before anything else is started.
+     */
+    private void finishOptionSettings0() throws DocletException {
+        initDestDirectory();
+        if (urlForLink != null && pkglistUrlForLink != null)
+            extern.link(urlForLink, pkglistUrlForLink, reporter, false);
+        if (urlForLinkOffline != null && pkglistUrlForLinkOffline != null)
+            extern.link(urlForLinkOffline, pkglistUrlForLinkOffline, reporter, true);
+        if (docencoding == null) {
+            docencoding = encoding;
+        }
+        typeElementCatalog = new TypeElementCatalog(includedTypeElements, this);
+        initTagletManager(customTagStrs);
+        groups.stream().forEach((grp) -> {
+            if (showModules) {
+                group.checkModuleGroups(grp.value1, grp.value2);
+            } else {
+                group.checkPackageGroups(grp.value1, grp.value2);
+            }
+        });
+    }
+
+    /**
+     * Set the command line options supported by this configuration.
+     *
+     * @return true if the options are set successfully
+     * @throws DocletException if there is a problem while setting the options
+     */
+    public boolean setOptions() throws DocletException {
+        initPackages();
+        initModules();
+        finishOptionSettings0();
+        if (!finishOptionSettings())
+            return false;
+
+        return true;
+    }
+
+    private void initDestDirectory() throws DocletException {
+        if (!destDirName.isEmpty()) {
+            DocFile destDir = DocFile.createFileForDirectory(this, destDirName);
+            if (!destDir.exists()) {
+                //Create the output directory (in case it doesn't exist yet)
+                reporter.print(NOTE, getText("doclet.dest_dir_create", destDirName));
+                destDir.mkdirs();
+            } else if (!destDir.isDirectory()) {
+                throw new SimpleDocletException(getText(
+                        "doclet.destination_directory_not_directory_0",
+                        destDir.getPath()));
+            } else if (!destDir.canWrite()) {
+                throw new SimpleDocletException(getText(
+                        "doclet.destination_directory_not_writable_0",
+                        destDir.getPath()));
+            }
+        }
+        DocFileFactory.getFactory(this).setDestDir(destDirName);
+    }
+
+    /**
+     * Initialize the taglet manager.  The strings to initialize the simple custom tags should
+     * be in the following format:  "[tag name]:[location str]:[heading]".
+     *
+     * @param customTagStrs the set two dimensional arrays of strings.  These arrays contain
+     * either -tag or -taglet arguments.
+     */
+    private void initTagletManager(Set<List<String>> customTagStrs) {
+        tagletManager = tagletManager == null ?
+            new TagletManager(nosince, showversion, showauthor, javafx, this) :
+            tagletManager;
+        for (List<String> args : customTagStrs) {
+            if (args.get(0).equals("-taglet")) {
+                tagletManager.addCustomTag(args.get(1), getFileManager(), tagletpath);
+                continue;
+            }
+            List<String> tokens = tokenize(args.get(1), TagletManager.SIMPLE_TAGLET_OPT_SEPARATOR, 3);
+            if (tokens.size() == 1) {
+                String tagName = args.get(1);
+                if (tagletManager.isKnownCustomTag(tagName)) {
+                    //reorder a standard tag
+                    tagletManager.addNewSimpleCustomTag(tagName, null, "");
+                } else {
+                    //Create a simple tag with the heading that has the same name as the tag.
+                    StringBuilder heading = new StringBuilder(tagName + ":");
+                    heading.setCharAt(0, Character.toUpperCase(tagName.charAt(0)));
+                    tagletManager.addNewSimpleCustomTag(tagName, heading.toString(), "a");
+                }
+            } else if (tokens.size() == 2) {
+                //Add simple taglet without heading, probably to excluding it in the output.
+                tagletManager.addNewSimpleCustomTag(tokens.get(0), tokens.get(1), "");
+            } else if (tokens.size() >= 3) {
+                tagletManager.addNewSimpleCustomTag(tokens.get(0), tokens.get(2), tokens.get(1));
+            } else {
+                Messages messages = getMessages();
+                messages.error("doclet.Error_invalid_custom_tag_argument", args.get(1));
+            }
+        }
+    }
+
+    /**
+     * Given a string, return an array of tokens.  The separator can be escaped
+     * with the '\' character.  The '\' character may also be escaped by the
+     * '\' character.
+     *
+     * @param s         the string to tokenize.
+     * @param separator the separator char.
+     * @param maxTokens the maximum number of tokens returned.  If the
+     *                  max is reached, the remaining part of s is appended
+     *                  to the end of the last token.
+     *
+     * @return an array of tokens.
+     */
+    private List<String> tokenize(String s, char separator, int maxTokens) {
+        List<String> tokens = new ArrayList<>();
+        StringBuilder  token = new StringBuilder ();
+        boolean prevIsEscapeChar = false;
+        for (int i = 0; i < s.length(); i += Character.charCount(i)) {
+            int currentChar = s.codePointAt(i);
+            if (prevIsEscapeChar) {
+                // Case 1:  escaped character
+                token.appendCodePoint(currentChar);
+                prevIsEscapeChar = false;
+            } else if (currentChar == separator && tokens.size() < maxTokens-1) {
+                // Case 2:  separator
+                tokens.add(token.toString());
+                token = new StringBuilder();
+            } else if (currentChar == '\\') {
+                // Case 3:  escape character
+                prevIsEscapeChar = true;
+            } else {
+                // Case 4:  regular character
+                token.appendCodePoint(currentChar);
+            }
+        }
+        if (token.length() > 0) {
+            tokens.add(token.toString());
+        }
+        return tokens;
+    }
+
+    private void addToSet(Set<String> s, String str){
+        StringTokenizer st = new StringTokenizer(str, ":");
+        String current;
+        while(st.hasMoreTokens()){
+            current = st.nextToken();
+            s.add(current);
+        }
+    }
+
+    /**
+     * Add a trailing file separator, if not found. Remove superfluous
+     * file separators if any. Preserve the front double file separator for
+     * UNC paths.
+     *
+     * @param path Path under consideration.
+     * @return String Properly constructed path string.
+     */
+    public static String addTrailingFileSep(String path) {
+        String fs = System.getProperty("file.separator");
+        String dblfs = fs + fs;
+        int indexDblfs;
+        while ((indexDblfs = path.indexOf(dblfs, 1)) >= 0) {
+            path = path.substring(0, indexDblfs) +
+                path.substring(indexDblfs + fs.length());
+        }
+        if (!path.endsWith(fs))
+            path += fs;
+        return path;
+    }
+
+    /**
+     *
+     * This checks for the validity of the options used by the user.
+     * As of this writing, this checks only docencoding.
+     *
+     * @return true if all the options are valid.
+     */
+    public boolean generalValidOptions() {
+        if (docencoding != null) {
+            if (!checkOutputFileEncoding(docencoding)) {
+                return false;
+            }
+        }
+        if (docencoding == null && (encoding != null && !encoding.isEmpty())) {
+            if (!checkOutputFileEncoding(encoding)) {
+                return false;
+            }
+        }
+        return true;
+    }
+
+    /**
+     * Check the validity of the given Source or Output File encoding on this
+     * platform.
+     *
+     * @param docencoding output file encoding.
+     * @param reporter    used to report errors.
+     */
+    private boolean checkOutputFileEncoding(String docencoding) {
+        OutputStream ost= new ByteArrayOutputStream();
+        OutputStreamWriter osw = null;
+        try {
+            osw = new OutputStreamWriter(ost, docencoding);
+        } catch (UnsupportedEncodingException exc) {
+            reporter.print(ERROR, getText("doclet.Encoding_not_supported", docencoding));
+            return false;
+        } finally {
+            try {
+                if (osw != null) {
+                    osw.close();
+                }
+            } catch (IOException exc) {
+            }
+        }
+        return true;
+    }
+
+    /**
+     * Return true if the given doc-file subdirectory should be excluded and
+     * false otherwise.
+     *
+     * @param docfilesubdir the doc-files subdirectory to check.
+     * @return true if the directory is excluded.
+     */
+    public boolean shouldExcludeDocFileDir(String docfilesubdir){
+        return excludedDocFileDirs.contains(docfilesubdir);
+    }
+
+    /**
+     * Return true if the given qualifier should be excluded and false otherwise.
+     *
+     * @param qualifier the qualifier to check.
+     * @return true if the qualifier should be excluded
+     */
+    public boolean shouldExcludeQualifier(String qualifier){
+        if (excludedQualifiers.contains("all") ||
+            excludedQualifiers.contains(qualifier) ||
+            excludedQualifiers.contains(qualifier + ".*")) {
+            return true;
+        } else {
+            int index = -1;
+            while ((index = qualifier.indexOf(".", index + 1)) != -1) {
+                if (excludedQualifiers.contains(qualifier.substring(0, index + 1) + "*")) {
+                    return true;
+                }
+            }
+            return false;
+        }
+    }
+
+    /**
+     * Return the qualified name of the Element if its qualifier is not excluded.
+     * Otherwise return the unqualified Element name.
+     *
+     * @param te the TypeElement to check.
+     * @return the class name
+     */
+    public String getClassName(TypeElement te) {
+        PackageElement pkg = utils.containingPackage(te);
+        return shouldExcludeQualifier(utils.getPackageName(pkg))
+                ? utils.getSimpleName(te)
+                : utils.getFullyQualifiedName(te);
+    }
+
+    /**
+     * Convenience method to obtain a resource from the doclet's
+     * {@link Resources resources}.
+     * Equivalent to <code>getResources.getText(key);</code>.
+     *
+     * @param key the key for the desired string
+     * @return the string for the given key
+     * @throws MissingResourceException if the key is not found in either
+     *  bundle.
+     */
+    public abstract String getText(String key);
+
+    /**
+     * Convenience method to obtain a resource from the doclet's
+     * {@link Resources resources}.
+     * Equivalent to <code>getResources.getText(key, args);</code>.
+     *
+     * @param key the key for the desired string
+     * @param args values to be substituted into the resulting string
+     * @return the string for the given key
+     * @throws MissingResourceException if the key is not found in either
+     *  bundle.
+     */
+    public abstract String getText(String key, String... args);
+
+    /**
+     * Convenience method to obtain a resource from the doclet's
+     * {@link Resources resources} as a {@code Content} object.
+     *
+     * @param key the key for the desired string
+     * @return a content tree for the text
+     */
+    public abstract Content getContent(String key);
+
+    /**
+     * Convenience method to obtain a resource from the doclet's
+     * {@link Resources resources} as a {@code Content} object.
+     *
+     * @param key the key for the desired string
+     * @param o   string or content argument added to configuration text
+     * @return a content tree for the text
+     */
+    public abstract Content getContent(String key, Object o);
+
+    /**
+     * Convenience method to obtain a resource from the doclet's
+     * {@link Resources resources} as a {@code Content} object.
+     *
+     * @param key the key for the desired string
+     * @param o1 resource argument
+     * @param o2 resource argument
+     * @return a content tree for the text
+     */
+    public abstract Content getContent(String key, Object o1, Object o2);
+
+    /**
+     * Get the configuration string as a content.
+     *
+     * @param key the key for the desired string
+     * @param o0  string or content argument added to configuration text
+     * @param o1  string or content argument added to configuration text
+     * @param o2  string or content argument added to configuration text
+     * @return a content tree for the text
+     */
+    public abstract Content getContent(String key, Object o0, Object o1, Object o2);
+
+    /**
+     * Return true if the TypeElement element is getting documented, depending upon
+     * -nodeprecated option and the deprecation information. Return true if
+     * -nodeprecated is not used. Return false if -nodeprecated is used and if
+     * either TypeElement element is deprecated or the containing package is deprecated.
+     *
+     * @param te the TypeElement for which the page generation is checked
+     * @return true if it is a generated doc.
+     */
+    public boolean isGeneratedDoc(TypeElement te) {
+        if (!nodeprecated) {
+            return true;
+        }
+        return !(utils.isDeprecated(te) || utils.isDeprecated(utils.containingPackage(te)));
+    }
+
+    /**
+     * Return the doclet specific instance of a writer factory.
+     *
+     * @return the {@link WriterFactory} for the doclet.
+     */
+    public abstract WriterFactory getWriterFactory();
+
+    /**
+     * Return the input stream to the builder XML.
+     *
+     * @return the input steam to the builder XML.
+     * @throws DocFileIOException when the given XML file cannot be found or opened.
+     */
+    public InputStream getBuilderXML() throws DocFileIOException {
+        return builderXMLPath == null ?
+            BaseConfiguration.class.getResourceAsStream(DEFAULT_BUILDER_XML) :
+            DocFile.createFileForInput(this, builderXMLPath).openInputStream();
+    }
+
+    /**
+     * Return the Locale for this document.
+     *
+     * @return the current locale
+     */
+    public abstract Locale getLocale();
+
+    /**
+     * Return the path of the overview file and null if it does not exist.
+     *
+     * @return the path of the overview file.
+     */
+    public abstract JavaFileObject getOverviewPath();
+
+    /**
+     * Return the current file manager.
+     *
+     * @return JavaFileManager
+     */
+    public abstract JavaFileManager getFileManager();
+
+    private void setTabWidth(int n) {
+        sourcetab = n;
+        tabSpaces = String.format("%" + n + "s", "");
+    }
+
+    public abstract boolean showMessage(DocTreePath path, String key);
+
+    public abstract boolean showMessage(Element e, String key);
+
+    public static abstract class Option implements Doclet.Option, Comparable<Option> {
+        private final String[] names;
+        private final String parameters;
+        private final String description;
+        private final int argCount;
+
+        protected Option(Resources resources, String name, int argCount) {
+            this(resources, null, name, argCount);
+        }
+
+        protected Option(Resources resources, String keyBase, String name, int argCount) {
+            this.names = name.trim().split("\\s+");
+            if (keyBase == null) {
+                keyBase = "doclet.usage." + names[0].toLowerCase().replaceAll("^-+", "");
+            }
+            String desc = getOptionsMessage(resources, keyBase + ".description");
+            if (desc.isEmpty()) {
+                this.description = "<MISSING KEY>";
+                this.parameters = "<MISSING KEY>";
+            } else {
+                this.description = desc;
+                this.parameters = getOptionsMessage(resources, keyBase + ".parameters");
+            }
+            this.argCount = argCount;
+        }
+
+        protected Option(Resources resources, String name) {
+            this(resources, name, 0);
+        }
+
+        private String getOptionsMessage(Resources resources, String key) {
+            try {
+                return resources.getText(key);
+            } catch (MissingResourceException ignore) {
+                return "";
+            }
+        }
+
+        @Override
+        public String getDescription() {
+            return description;
+        }
+
+        @Override
+        public Option.Kind getKind() {
+            return Doclet.Option.Kind.STANDARD;
+        }
+
+        @Override
+        public List<String> getNames() {
+            return Arrays.asList(names);
+        }
+
+        @Override
+        public String getParameters() {
+            return parameters;
+        }
+
+        @Override
+        public String toString() {
+            return Arrays.toString(names);
+        }
+
+        @Override
+        public int getArgumentCount() {
+            return argCount;
+        }
+
+        public boolean matches(String option) {
+            for (String name : names) {
+                boolean matchCase = name.startsWith("--");
+                if (option.startsWith("--") && option.contains("=")) {
+                    return name.equals(option.substring(option.indexOf("=") + 1));
+                } else if (matchCase) {
+                    return name.equals(option);
+                }
+                return name.toLowerCase().equals(option.toLowerCase());
+            }
+            return false;
+        }
+
+        @Override
+        public int compareTo(Option that) {
+            return this.getNames().get(0).compareTo(that.getNames().get(0));
+        }
+    }
+
+    public abstract class XOption extends Option {
+
+        public XOption(Resources resources, String prefix, String name, int argCount) {
+            super(resources, prefix, name, argCount);
+        }
+
+        public XOption(Resources resources, String name, int argCount) {
+            super(resources, name, argCount);
+        }
+
+        public XOption(Resources resources, String name) {
+            this(resources, name, 0);
+        }
+
+        @Override
+        public Option.Kind getKind() {
+            return Doclet.Option.Kind.EXTENDED;
+        }
+    }
+
+    public abstract class Hidden extends Option {
+
+        public Hidden(Resources resources, String name, int argCount) {
+            super(resources, name, argCount);
+        }
+
+        public Hidden(Resources resources, String name) {
+            this(resources, name, 0);
+        }
+
+        @Override
+        public Option.Kind getKind() {
+            return Doclet.Option.Kind.OTHER;
+        }
+    }
+
+    /*
+     * Stores a pair of Strings.
+     */
+    protected static class GroupContainer {
+        final String value1;
+        final String value2;
+        public GroupContainer(String value1, String value2) {
+            this.value1 = value1;
+            this.value2 = value2;
+        }
+    }
+
+    /*
+     * Splits the elements in a collection to its individual
+     * collection.
+     */
+    static private class Splitter {
+
+        final Set<ModuleElement> mset = new LinkedHashSet<>();
+        final Set<PackageElement> pset = new LinkedHashSet<>();
+        final Set<TypeElement> tset = new LinkedHashSet<>();
+
+        Splitter(DocletEnvironment docEnv, boolean included) {
+
+            Set<? extends Element> inset = included
+                    ? docEnv.getIncludedElements()
+                    : docEnv.getSpecifiedElements();
+
+            for (Element e : inset) {
+                new SimpleElementVisitor9<Void, Void>() {
+                    @Override
+                    @DefinedBy(Api.LANGUAGE_MODEL)
+                    public Void visitModule(ModuleElement e, Void p) {
+                        mset.add(e);
+                        return null;
+                    }
+
+                    @Override
+                    @DefinedBy(Api.LANGUAGE_MODEL)
+                    public Void visitPackage(PackageElement e, Void p) {
+                        pset.add(e);
+                        return null;
+                    }
+
+                    @Override
+                    @DefinedBy(Api.LANGUAGE_MODEL)
+                    public Void visitType(TypeElement e, Void p) {
+                        tset.add(e);
+                        return null;
+                    }
+
+                    @Override
+                    @DefinedBy(Api.LANGUAGE_MODEL)
+                    protected Void defaultAction(Element e, Void p) {
+                        throw new AssertionError("unexpected element: " + e);
+                    }
+
+                }.visit(e);
+            }
+        }
+    }
+
+    /**
+     * Returns whether or not to allow JavaScript in comments.
+     * Default is off; can be set true from a command line option.
+     * @return the allowScriptInComments
+     */
+    public boolean isAllowScriptInComments() {
+        return allowScriptInComments;
+    }
+
+    public VisibleMemberMap getVisibleMemberMap(TypeElement te, VisibleMemberMap.Kind kind) {
+        EnumMap<Kind, Reference<VisibleMemberMap>> cacheMap = typeElementMemberCache
+                .computeIfAbsent(te, k -> new EnumMap<>(VisibleMemberMap.Kind.class));
+
+        Reference<VisibleMemberMap> vmapRef = cacheMap.get(kind);
+        // recompute, if referent has been garbage collected
+        VisibleMemberMap vMap = vmapRef == null ? null : vmapRef.get();
+        if (vMap == null) {
+            vMap = new VisibleMemberMap(te, kind, this);
+            cacheMap.put(kind, new SoftReference<>(vMap));
+        }
+        return vMap;
+    }
+}