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

 /*

  * Copyright (c) 1997, 2013, 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.internal.toolkit;

 import java.io.*;

 import java.util.*;

 import java.util.regex.Matcher;

 import java.util.regex.Pattern;

 import javax.tools.JavaFileManager;

 import com.sun.javadoc.*;

 import com.sun.tools.javac.sym.Profiles;

 import com.sun.tools.javac.jvm.Profile;

 import com.sun.tools.doclets.internal.toolkit.builders.BuilderFactory;

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

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

 import com.sun.tools.javac.util.StringUtils;

 /**

  * Configure the output based on the options. Doclets should sub-class

  * Configuration, 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 Configuration {

     /**

      * Exception used to report a problem during setOptions.

      */

     public static class Fault extends Exception {

         private static final long serialVersionUID = 0;

         Fault(String msg) {

             super(msg);

         }

         Fault(String msg, Exception cause) {

             super(msg, cause);

         }

     }

     /**

      * 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.

      */

     private static final String DEFAULT_BUILDER_XML = "resources/doclet.xml";

     /**

      * The path to Taglets

      */

     public String tagletpath = "";

     /**

      * 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;

     /**

      * 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 = new MetaKeywords(this);

     /**

      * The list of doc-file subdirectories to exclude

      */

     protected Set<String> excludedDocFileDirs;

     /**

      * The list of qualifiers to exclude

      */

     protected Set<String> excludedQualifiers;

     /**

      * The Root of the generated Program Structure from the Doclet API.

      */

     public RootDoc root;

     /**

      * 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;

     /**

      * Sourcepath from where to read the source files. Default is classpath.

      *

      */

     public String sourcepath = "";

     /**

      * Argument for command line option "-Xprofilespath".

      */

     public String profilespath = "";

     /**

      * Generate profiles documentation if profilespath is set and valid profiles

      * are present.

      */

     public boolean showProfiles = 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 ClassDocCatalog classDocCatalog;

     /**

      * Message Retriever for the doclet, to retrieve message from the resource

      * file for this Configuration, which is common for 1.1 and standard

      * doclets.

      *

      * TODO:  Make this private!!!

      */

     public MessageRetriever message = null;

     /**

      * 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);

     /**

      * Return the build date for the doclet.

      */

     public abstract String getDocletSpecificBuildDate();

     /**

      * This method should be defined in all those doclets(configurations),

      * which want to derive themselves from this Configuration. This method

      * can be used to set its own command line options.

      *

      * @param options The array of option names and values.

      * @throws DocletAbortException

      */

     public abstract void setSpecificDocletOptions(String[][] options) throws Fault;

     /**

      * Return the doclet specific {@link MessageRetriever}

      * @return the doclet specific MessageRetriever.

      */

     public abstract MessageRetriever getDocletSpecificMsg();

     /**

      * A profiles object used to access profiles across various pages.

      */

     public Profiles profiles;

     /**

      * An map of the profiles to packages.

      */

     public Map<String,PackageDoc[]> profilePackages;

     /**

      * An array of the packages specified on the command-line merged

      * with the array of packages that contain the classes specified on the

      * command-line.  The array is sorted.

      */

     public PackageDoc[] packages;

     /**

      * Constructor. Constructs the message retriever with resource file.

      */

     public Configuration() {

         message =

             new MessageRetriever(this,

             "com.sun.tools.doclets.internal.toolkit.resources.doclets");

         excludedDocFileDirs = new HashSet<String>();

         excludedQualifiers = new HashSet<String>();

         setTabWidth(DocletConstants.DEFAULT_TAB_STOP_LENGTH);

     }

     /**

      * 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;

     }

     /**

      * This method should be defined in all those doclets

      * which want to inherit from this Configuration. This method

      * should return the number of arguments to the command line

      * option (including the option name).  For example,

      * -notimestamp is a single-argument option, so this method would

      * return 1.

      *

      * @param option Command line option under consideration.

      * @return number of arguments to option (including the

      * option name). Zero return means option not known.

      * Negative value means error occurred.

      */

     public int optionLength(String option) {

         option = StringUtils.toLowerCase(option);

         if (option.equals("-author") ||

             option.equals("-docfilessubdirs") ||

             option.equals("-javafx") ||

             option.equals("-keywords") ||

             option.equals("-linksource") ||

             option.equals("-nocomment") ||

             option.equals("-nodeprecated") ||

             option.equals("-nosince") ||

             option.equals("-notimestamp") ||

             option.equals("-quiet") ||

             option.equals("-xnodate") ||

             option.equals("-version")) {

             return 1;

         } else if (option.equals("-d") ||

                    option.equals("-docencoding") ||

                    option.equals("-encoding") ||

                    option.equals("-excludedocfilessubdir") ||

                    option.equals("-link") ||

                    option.equals("-sourcetab") ||

                    option.equals("-noqualifier") ||

                    option.equals("-output") ||

                    option.equals("-sourcepath") ||

                    option.equals("-tag") ||

                    option.equals("-taglet") ||

                    option.equals("-tagletpath") ||

                    option.equals("-xprofilespath")) {

             return 2;

         } else if (option.equals("-group") ||

                    option.equals("-linkoffline")) {

             return 3;

         } else {

             return -1;  // indicate we don't know about it

         }

     }

     /**

      * Perform error checking on the given options.

      *

      * @param options  the given options to check.

      * @param reporter the reporter used to report errors.

      */

     public abstract boolean validOptions(String options[][],

         DocErrorReporter reporter);

     private void initProfiles() throws IOException {

         if (profilespath.isEmpty())

             return;

         profiles = Profiles.read(new File(profilespath));

         // Group the packages to be documented by the lowest profile (if any)

         // in which each appears

         Map<Profile, List<PackageDoc>> interimResults =

                 new EnumMap<Profile, List<PackageDoc>>(Profile.class);

         for (Profile p: Profile.values())

             interimResults.put(p, new ArrayList<PackageDoc>());

         for (PackageDoc pkg: packages) {

             if (nodeprecated && Util.isDeprecated(pkg)) {

                 continue;

             }

             // the getProfile method takes a type name, not a package name,

             // but isn't particularly fussy about the simple name -- so just use *

             int i = profiles.getProfile(pkg.name().replace(".", "/") + "/*");

             Profile p = Profile.lookup(i);

             if (p != null) {

                 List<PackageDoc> pkgs = interimResults.get(p);

                 pkgs.add(pkg);

             }

         }

         // Build the profilePackages structure used by the doclet

         profilePackages = new HashMap<String,PackageDoc[]>();

         List<PackageDoc> prev = Collections.<PackageDoc>emptyList();

         int size;

         for (Map.Entry<Profile,List<PackageDoc>> e: interimResults.entrySet()) {

             Profile p = e.getKey();

             List<PackageDoc> pkgs =  e.getValue();

             pkgs.addAll(prev); // each profile contains all lower profiles

             Collections.sort(pkgs);

             size = pkgs.size();

             // For a profile, if there are no packages to be documented, do not add

             // it to profilePackages map.

             if (size > 0)

                 profilePackages.put(p.name, pkgs.toArray(new PackageDoc[pkgs.size()]));

             prev = pkgs;

         }

         // Generate profiles documentation if any profile contains any

         // of the packages to be documented.

         showProfiles = !prev.isEmpty();

     }

     private void initPackageArray() {

         Set<PackageDoc> set = new HashSet<PackageDoc>(Arrays.asList(root.specifiedPackages()));

         ClassDoc[] classes = root.specifiedClasses();

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

             set.add(classes[i].containingPackage());

         }

         ArrayList<PackageDoc> results = new ArrayList<PackageDoc>(set);

         Collections.sort(results);

         packages = results.toArray(new PackageDoc[] {});

     }

     /**

      * Set the command line options supported by this configuration.

      *

      * @param options the two dimensional array of options.

      */

     public void setOptions(String[][] options) throws Fault {

         LinkedHashSet<String[]> customTagStrs = new LinkedHashSet<String[]>();

         // Some options, specifically -link and -linkoffline, require that

         // the output directory has already been created: so do that first.

         for (int oi = 0; oi < options.length; ++oi) {

             String[] os = options[oi];

             String opt = StringUtils.toLowerCase(os[0]);

             if (opt.equals("-d")) {

                 destDirName = addTrailingFileSep(os[1]);

                 docFileDestDirName = destDirName;

                 ensureOutputDirExists();

                 break;

             }

         }

         for (int oi = 0; oi < options.length; ++oi) {

             String[] os = options[oi];

             String opt = StringUtils.toLowerCase(os[0]);

             if (opt.equals("-docfilessubdirs")) {

                 copydocfilesubdirs = true;

             } else if (opt.equals("-docencoding")) {

                 docencoding = os[1];

             } else if (opt.equals("-encoding")) {

                 encoding = os[1];

             } else if (opt.equals("-author")) {

                 showauthor = true;

             } else  if (opt.equals("-javafx")) {

                 javafx = true;

             } else if (opt.equals("-nosince")) {

                 nosince = true;

             } else if (opt.equals("-version")) {

                 showversion = true;

             } else if (opt.equals("-nodeprecated")) {

                 nodeprecated = true;

             } else if (opt.equals("-sourcepath")) {

                 sourcepath = os[1];

             } else if ((opt.equals("-classpath") || opt.equals("-cp")) &&

                        sourcepath.length() == 0) {

                 sourcepath = os[1];

             } else if (opt.equals("-excludedocfilessubdir")) {

                 addToSet(excludedDocFileDirs, os[1]);

             } else if (opt.equals("-noqualifier")) {

                 addToSet(excludedQualifiers, os[1]);

             } else if (opt.equals("-linksource")) {

                 linksource = true;

             } else if (opt.equals("-sourcetab")) {

                 linksource = true;

                 try {

                     setTabWidth(Integer.parseInt(os[1]));

                 } catch (NumberFormatException e) {

                     //Set to -1 so that warning will be printed

                     //to indicate what is valid argument.

                     sourcetab = -1;

                 }

                 if (sourcetab <= 0) {

                     message.warning("doclet.sourcetab_warning");

                     setTabWidth(DocletConstants.DEFAULT_TAB_STOP_LENGTH);

                 }

             } else if (opt.equals("-notimestamp")) {

                 notimestamp = true;

             } else if (opt.equals("-nocomment")) {

                 nocomment = true;

             } else if (opt.equals("-tag") || opt.equals("-taglet")) {

                 customTagStrs.add(os);

             } else if (opt.equals("-tagletpath")) {

                 tagletpath = os[1];

             }  else if (opt.equals("-xprofilespath")) {

                 profilespath = os[1];

             } else if (opt.equals("-keywords")) {

                 keywords = true;

             } else if (opt.equals("-serialwarn")) {

                 serialwarn = true;

             } else if (opt.equals("-group")) {

                 group.checkPackageGroups(os[1], os[2]);

             } else if (opt.equals("-link")) {

                 String url = os[1];

                 extern.link(url, url, root, false);

             } else if (opt.equals("-linkoffline")) {

                 String url = os[1];

                 String pkglisturl = os[2];

                 extern.link(url, pkglisturl, root, true);

             }

         }

         if (sourcepath.length() == 0) {

             sourcepath = System.getProperty("env.class.path") == null ? "" :

                 System.getProperty("env.class.path");

         }

         if (docencoding == null) {

             docencoding = encoding;

         }

         classDocCatalog = new ClassDocCatalog(root.specifiedClasses(), this);

         initTagletManager(customTagStrs);

     }

     /**

      * Set the command line options supported by this configuration.

      *

      * @throws DocletAbortException

      */

     public void setOptions() throws Fault {

         initPackageArray();

         setOptions(root.options());

         try {

             initProfiles();

         } catch (Exception e) {

             throw new DocletAbortException(e);

         }

         setSpecificDocletOptions(root.options());

     }

     private void ensureOutputDirExists() throws Fault {

         DocFile destDir = DocFile.createFileForDirectory(this, destDirName);

         if (!destDir.exists()) {

             //Create the output directory (in case it doesn't exist yet)

             root.printNotice(getText("doclet.dest_dir_create", destDirName));

             destDir.mkdirs();

         } else if (!destDir.isDirectory()) {

             throw new Fault(getText(

                 "doclet.destination_directory_not_directory_0",

                 destDir.getPath()));

         } else if (!destDir.canWrite()) {

             throw new Fault(getText(

                 "doclet.destination_directory_not_writable_0",

                 destDir.getPath()));

         }

     }

     /**

      * 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<String[]> customTagStrs) {

         tagletManager = tagletManager == null ?

             new TagletManager(nosince, showversion, showauthor, javafx, message) :

             tagletManager;

         String[] args;

         for (Iterator<String[]> it = customTagStrs.iterator(); it.hasNext(); ) {

             args = it.next();

             if (args[0].equals("-taglet")) {

                 tagletManager.addCustomTag(args[1], getFileManager(), tagletpath);

                 continue;

             }

             String[] tokens = tokenize(args[1],

                 TagletManager.SIMPLE_TAGLET_OPT_SEPARATOR, 3);

             if (tokens.length == 1) {

                 String tagName = args[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.length == 2) {

                 //Add simple taglet without heading, probably to excluding it in the output.

                 tagletManager.addNewSimpleCustomTag(tokens[0], tokens[1], "");

             } else if (tokens.length >= 3) {

                 tagletManager.addNewSimpleCustomTag(tokens[0], tokens[2], tokens[1]);

             } else {

                 message.error("doclet.Error_invalid_custom_tag_argument", args[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 String[] tokenize(String s, char separator, int maxTokens) {

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

         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.toArray(new String[] {});

     }

     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.

      * This works exactly like

      * {@link com.sun.javadoc.Doclet#validOptions(String[][],

      * DocErrorReporter)}. This will validate the options which are shared

      * by our doclets. For example, this method will flag an error using

      * the DocErrorReporter if user has used "-nohelp" and "-helpfile" option

      * together.

      *

      * @param options  options used on the command line.

      * @param reporter used to report errors.

      * @return true if all the options are valid.

      */

     public boolean generalValidOptions(String options[][],

             DocErrorReporter reporter) {

         boolean docencodingfound = false;

         String encoding = "";

         for (int oi = 0; oi < options.length; oi++) {

             String[] os = options[oi];

             String opt = StringUtils.toLowerCase(os[0]);

             if (opt.equals("-docencoding")) {

                 docencodingfound = true;

                 if (!checkOutputFileEncoding(os[1], reporter)) {

                     return false;

                 }

             } else if (opt.equals("-encoding")) {

                 encoding = os[1];

             }

         }

         if (!docencodingfound && encoding.length() > 0) {

             if (!checkOutputFileEncoding(encoding, reporter)) {

                 return false;

             }

         }

         return true;

     }

     /**

      * Check the validity of the given profile. Return false if there are no

      * valid packages to be documented for the profile.

      *

      * @param profileName the profile that needs to be validated.

      * @return true if the profile has valid packages to be documented.

      */

     public boolean shouldDocumentProfile(String profileName) {

         return profilePackages.containsKey(profileName);

     }

     /**

      * 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,

             DocErrorReporter reporter) {

         OutputStream ost= new ByteArrayOutputStream();

         OutputStreamWriter osw = null;

         try {

             osw = new OutputStreamWriter(ost, docencoding);

         } catch (UnsupportedEncodingException exc) {

             reporter.printError(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.

      */

     public boolean shouldExcludeDocFileDir(String docfilesubdir){

         if (excludedDocFileDirs.contains(docfilesubdir)) {

             return true;

         } else {

             return false;

         }

     }

     /**

      * Return true if the given qualifier should be excluded and false otherwise.

      * @param qualifier the qualifier to check.

      */

     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 <code>ClassDoc</code> if it's qualifier is not excluded.  Otherwise,

      * return the unqualified <code>ClassDoc</code> name.

      * @param cd the <code>ClassDoc</code> to check.

      */

     public String getClassName(ClassDoc cd) {

         PackageDoc pd = cd.containingPackage();

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

             return cd.name();

         } else {

             return cd.qualifiedName();

         }

     }

     public String getText(String key) {

         try {

             //Check the doclet specific properties file.

             return getDocletSpecificMsg().getText(key);

         } catch (Exception e) {

             //Check the shared properties file.

             return message.getText(key);

         }

     }

     public String getText(String key, String a1) {

         try {

             //Check the doclet specific properties file.

             return getDocletSpecificMsg().getText(key, a1);

         } catch (Exception e) {

             //Check the shared properties file.

             return message.getText(key, a1);

         }

     }

     public String getText(String key, String a1, String a2) {

         try {

             //Check the doclet specific properties file.

             return getDocletSpecificMsg().getText(key, a1, a2);

         } catch (Exception e) {

             //Check the shared properties file.

             return message.getText(key, a1, a2);

         }

     }

     public String getText(String key, String a1, String a2, String a3) {

         try {

             //Check the doclet specific properties file.

             return getDocletSpecificMsg().getText(key, a1, a2, a3);

         } catch (Exception e) {

             //Check the shared properties file.

             return message.getText(key, a1, a2, a3);

         }

     }

     public abstract Content newContent();

     /**

      * Get the configuration string as a content.

      *

      * @param key the key to look for in the configuration file

      * @return a content tree for the text

      */

     public Content getResource(String key) {

         Content c = newContent();

         c.addContent(getText(key));

         return c;

     }

     /**

      * Get the configuration string as a content.

      *

      * @param key the key to look for in the configuration file

      * @param o   string or content argument added to configuration text

      * @return a content tree for the text

      */

     public Content getResource(String key, Object o) {

         return getResource(key, o, null, null);

     }

     /**

      * Get the configuration string as a content.

      *

      * @param key the key to look for in the configuration file

      * @param o   string or content argument added to configuration text

      * @return a content tree for the text

      */

     public Content getResource(String key, Object o1, Object o2) {

         return getResource(key, o1, o2, null);

     }

     /**

      * Get the configuration string as a content.

      *

      * @param key the key to look for in the configuration file

      * @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 Content getResource(String key, Object o0, Object o1, Object o2) {

         Content c = newContent();

         Pattern p = Pattern.compile("\\{([012])\\}");

         String text = getText(key);

         Matcher m = p.matcher(text);

         int start = 0;

         while (m.find(start)) {

             c.addContent(text.substring(start, m.start()));

             Object o = null;

             switch (m.group(1).charAt(0)) {

                 case '0': o = o0; break;

                 case '1': o = o1; break;

                 case '2': o = o2; break;

             }

             if (o == null) {

                 c.addContent("{" + m.group(1) + "}");

             } else if (o instanceof String) {

                 c.addContent((String) o);

             } else if (o instanceof Content) {

                 c.addContent((Content) o);

             }

             start = m.end();

         }

         c.addContent(text.substring(start));

         return c;

     }

     /**

      * Return true if the ClassDoc 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 ClassDoc element is deprecated or the containing package is deprecated.

      *

      * @param cd the ClassDoc for which the page generation is checked

      */

     public boolean isGeneratedDoc(ClassDoc cd) {

         if (!nodeprecated) {

             return true;

         }

         return !(Util.isDeprecated(cd) || Util.isDeprecated(cd.containingPackage()));

     }

     /**

      * 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 FileNotFoundException when the given XML file cannot be found.

      */

     public InputStream getBuilderXML() throws IOException {

         return builderXMLPath == null ?

             Configuration.class.getResourceAsStream(DEFAULT_BUILDER_XML) :

             DocFile.createFileForInput(this, builderXMLPath).openInputStream();

     }

     /**

      * Return the Locale for this document.

      */

     public abstract Locale getLocale();

     /**

      * Return the current file manager.

      */

     public abstract JavaFileManager getFileManager();

     /**

      * Return the comparator that will be used to sort member documentation.

      * To no do any sorting, return null.

      *

      * @return the {@link java.util.Comparator} used to sort members.

      */

     public abstract Comparator<ProgramElementDoc> getMemberComparator();

     private void setTabWidth(int n) {

         sourcetab = n;

         tabSpaces = String.format("%" + n + "s", "");

     }

     public abstract boolean showMessage(SourcePosition pos, String key);

 }