/*

 * Copyright (c) 1998, 2012, Oracle and/or its affiliates. All rights reserved.

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

 * This code is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License version 2 only, as

 * published by the Free Software Foundation.  Oracle designates this

 * particular file as subject to the "Classpath" exception as provided

 * by Oracle in the LICENSE file that accompanied this code.

 *

 * This code is distributed in the hope that it will be useful, but WITHOUT

 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

 * version 2 for more details (a copy is included in the LICENSE file that

 * accompanied this code).

 *

 * You should have received a copy of the GNU General Public License version

 * 2 along with this work; if not, write to the Free Software Foundation,

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

 *

 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

 * or visit www.oracle.com if you need additional information or have any

 * questions.

 */

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

import java.io.*;

import java.net.*;

import java.util.*;

import com.sun.javadoc.*;

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

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

/**

 * Configure the output based on the command line options.

 * <p>

 * Also determine the length of the command line option. For example,

 * for a option "-header" there will be a string argument associated, then the

 * the length of option "-header" is two. But for option "-nohelp" no argument

 * is needed so it's length is 1.

 * </p>

 * <p>

 * Also do the error checking on the options used. For example it is illegal to

 * use "-helpfile" option when already "-nohelp" option is used.

 * </p>

 *

 * @author Robert Field.

 * @author Atul Dambalkar.

 * @author Jamie Ho

 * @author Bhavesh Patel (Modified)

 */

public class ConfigurationImpl extends Configuration {

    private static ConfigurationImpl instance = new ConfigurationImpl();

    /**

     * The build date.  Note: For now, we will use

     * a version number instead of a date.

     */

    public static final String BUILD_DATE = System.getProperty("java.version");

    /**

     * Argument for command line option "-header".

     */

    public String header = "";

    /**

     * Argument for command line option "-packagesheader".

     */

    public String packagesheader = "";

    /**

     * Argument for command line option "-footer".

     */

    public String footer = "";

    /**

     * Argument for command line option "-doctitle".

     */

    public String doctitle = "";

    /**

     * Argument for command line option "-windowtitle".

     */

    public String windowtitle = "";

    /**

     * Argument for command line option "-top".

     */

    public String top = "";

    /**

     * Argument for command line option "-bottom".

     */

    public String bottom = "";

    /**

     * Argument for command line option "-helpfile".

     */

    public String helpfile = "";

    /**

     * Argument for command line option "-stylesheetfile".

     */

    public String stylesheetfile = "";

    /**

     * Argument for command line option "-Xdocrootparent".

     */

    public String docrootparent = "";

    /**

     * True if command line option "-nohelp" is used. Default value is false.

     */

    public boolean nohelp = false;

    /**

     * True if command line option "-splitindex" is used. Default value is

     * false.

     */

    public boolean splitindex = false;

    /**

     * False if command line option "-noindex" is used. Default value is true.

     */

    public boolean createindex = true;

    /**

     * True if command line option "-use" is used. Default value is false.

     */

    public boolean classuse = false;

    /**

     * False if command line option "-notree" is used. Default value is true.

     */

    public boolean createtree = true;

    /**

     * True if command line option "-nodeprecated" is used. Default value is

     * false.

     */

    public boolean nodeprecatedlist = false;

    /**

     * True if command line option "-nonavbar" is used. Default value is false.

     */

    public boolean nonavbar = false;

    /**

     * True if command line option "-nooverview" is used. Default value is

     * false

     */

    private boolean nooverview = false;

    /**

     * True if command line option "-overview" is used. Default value is false.

     */

    public boolean overview = false;

    /**

     * This is true if option "-overview" is used or option "-overview" is not

     * used and number of packages is more than one.

     */

    public boolean createoverview = false;

    /**

     * Unique Resource Handler for this package.

     */

    public final MessageRetriever standardmessage;

    /**

     * First file to appear in the right-hand frame in the generated

     * documentation.

     */

    /**

     * The classdoc for the class file getting generated.

     */

    public ClassDoc currentcd = null;  // Set this classdoc in the

    // ClassWriter.

    /**

     * Constructor. Initializes resource for the

     * {@link com.sun.tools.doclets.internal.toolkit.util.MessageRetriever MessageRetriever}.

     */

    private ConfigurationImpl() {

        standardmessage = new MessageRetriever(this,

            "com.sun.tools.doclets.formats.html.resources.standard");

    }

    /**

     * Reset to a fresh new ConfigurationImpl, to allow multiple invocations

     * of javadoc within a single VM. It would be better not to be using

     * static fields at all, but .... (sigh).

     */

    public static void reset() {

        instance = new ConfigurationImpl();

    }

    public static ConfigurationImpl getInstance() {

        return instance;

    }

    /**

     * Return the build date for the doclet.

     */

    public String getDocletSpecificBuildDate() {

        return BUILD_DATE;

    }

    /**

     * Depending upon the command line options provided by the user, set

     * configure the output generation environment.

     *

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

     */

    public void setSpecificDocletOptions(String[][] options) {

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

            String[] os = options[oi];

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

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

                footer = os[1];

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

                header = os[1];

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

                packagesheader = os[1];

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

                doctitle = os[1];

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

                windowtitle = os[1];

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

                top = os[1];

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

                bottom = os[1];

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

                helpfile = os[1];

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

                stylesheetfile = os[1];

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

                charset = os[1];

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

                docrootparent = os[1];

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

                nohelp = true;

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

                splitindex = true;

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

                createindex = false;

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

                classuse = true;

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

                createtree = false;

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

                nodeprecatedlist = true;

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

                nonavbar = true;

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

                nooverview = true;

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

                overview = true;

            }

        }

        if (root.specifiedClasses().length > 0) {

            Map<String,PackageDoc> map = new HashMap<String,PackageDoc>();

            PackageDoc pd;

            ClassDoc[] classes = root.classes();

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

                pd = classes[i].containingPackage();

                if(! map.containsKey(pd.name())) {

                    map.put(pd.name(), pd);

                }

            }

        }

        setCreateOverview();

        setTopFile(root);

    }

    /**

     * Returns the "length" of a given option. If an option takes no

     * arguments, its length is one. If it takes one argument, it's

     * length is two, and so on. This method is called by JavaDoc to

     * parse the options it does not recognize. It then calls

     * {@link #validOptions(String[][], DocErrorReporter)} to

     * validate them.

     * <b>Note:</b><br>

     * The options arrive as case-sensitive strings. For options that

     * are not case-sensitive, use toLowerCase() on the option string

     * before comparing it.

     * </blockquote>

     *

     * @return number of arguments + 1 for a option. Zero return means

     * option not known.  Negative value means error occurred.

     */

    public int optionLength(String option) {

        int result = -1;

        if ((result = super.optionLength(option)) > 0) {

            return result;

        }

        // otherwise look for the options we have added

        option = option.toLowerCase();

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

            option.equals("-noindex") ||

            option.equals("-notree") ||

            option.equals("-nohelp") ||

            option.equals("-splitindex") ||

            option.equals("-serialwarn") ||

            option.equals("-use") ||

            option.equals("-nonavbar") ||

            option.equals("-nooverview")) {

            return 1;

        } else if (option.equals("-help")) {

            System.out.println(getText("doclet.usage"));

            return 1;

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

                   option.equals("-header") ||

                   option.equals("-packagesheader") ||

                   option.equals("-doctitle") ||

                   option.equals("-windowtitle") ||

                   option.equals("-top") ||

                   option.equals("-bottom") ||

                   option.equals("-helpfile") ||

                   option.equals("-stylesheetfile") ||

                   option.equals("-charset") ||

                   option.equals("-overview") ||

                   option.equals("-xdocrootparent")) {

            return 2;

        } else {

            return 0;

        }

    }

    /**

     * {@inheritDoc}

     */

    public boolean validOptions(String options[][],

            DocErrorReporter reporter) {

        boolean helpfile = false;

        boolean nohelp = false;

        boolean overview = false;

        boolean nooverview = false;

        boolean splitindex = false;

        boolean noindex = false;

        // check shared options

        if (!generalValidOptions(options, reporter)) {

            return false;

        }

        // otherwise look at our options

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

            String[] os = options[oi];

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

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

                if (nohelp == true) {

                    reporter.printError(getText("doclet.Option_conflict",

                        "-helpfile", "-nohelp"));

                    return false;

                }

                if (helpfile == true) {

                    reporter.printError(getText("doclet.Option_reuse",

                        "-helpfile"));

                    return false;

                }

                File help = new File(os[1]);

                if (!help.exists()) {

                    reporter.printError(getText("doclet.File_not_found", os[1]));

                    return false;

                }

                helpfile = true;

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

                if (helpfile == true) {

                    reporter.printError(getText("doclet.Option_conflict",

                        "-nohelp", "-helpfile"));

                    return false;

                }

                nohelp = true;

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

                try {

                    new URL(os[1]);

                } catch (MalformedURLException e) {

                    reporter.printError(getText("doclet.MalformedURL", os[1]));

                    return false;

                }

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

                if (nooverview == true) {

                    reporter.printError(getText("doclet.Option_conflict",

                        "-overview", "-nooverview"));

                    return false;

                }

                if (overview == true) {

                    reporter.printError(getText("doclet.Option_reuse",

                        "-overview"));

                    return false;

                }

                overview = true;

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

                if (overview == true) {

                    reporter.printError(getText("doclet.Option_conflict",

                        "-nooverview", "-overview"));

                    return false;

                }

                nooverview = true;

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

                if (noindex == true) {

                    reporter.printError(getText("doclet.Option_conflict",

                        "-splitindex", "-noindex"));

                    return false;

                }

                splitindex = true;

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

                if (splitindex == true) {

                    reporter.printError(getText("doclet.Option_conflict",

                        "-noindex", "-splitindex"));

                    return false;

                }

                noindex = true;

            }

        }

        return true;

    }

    /**

     * {@inheritDoc}

     */

    public MessageRetriever getDocletSpecificMsg() {

        return standardmessage;

    }

    /**

     * Decide the page which will appear first in the right-hand frame. It will

     * be "overview-summary.html" if "-overview" option is used or no

     * "-overview" but the number of packages is more than one. It will be

     * "package-summary.html" of the respective package if there is only one

     * package to document. It will be a class page(first in the sorted order),

     * if only classes are provided on the command line.

     *

     * @param root Root of the program structure.

     */

    protected void setTopFile(RootDoc root) {

        if (!checkForDeprecation(root)) {

            return;

        }

        if (createoverview) {

        } else {

            if (packages.length == 1 && packages[0].name().equals("")) {

                if (root.classes().length > 0) {

                    ClassDoc[] classarr = root.classes();

                    Arrays.sort(classarr);

                    ClassDoc cd = getValidClass(classarr);

                }

            } else {

            }

        }

    }

    protected ClassDoc getValidClass(ClassDoc[] classarr) {

        if (!nodeprecated) {

            return classarr[0];

        }

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

            if (classarr[i].tags("deprecated").length == 0) {

                return classarr[i];

            }

        }

        return null;

    }

    protected boolean checkForDeprecation(RootDoc root) {

        ClassDoc[] classarr = root.classes();

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

            if (isGeneratedDoc(classarr[i])) {

                return true;

            }

        }

        return false;

    }

    /**

     * Generate "overview.html" page if option "-overview" is used or number of

     * packages is more than one. Sets {@link #createoverview} field to true.

     */

    protected void setCreateOverview() {

        if ((overview || packages.length > 1) && !nooverview) {

            createoverview = true;

        }

    }

    /**

     * {@inheritDoc}

     */

    public WriterFactory getWriterFactory() {

        return new WriterFactoryImpl(this);

    }

    /**

     * {@inheritDoc}

     */

    public Comparator<ProgramElementDoc> getMemberComparator() {

        return null;

    }

    /**

     * {@inheritDoc}

     */

    public Locale getLocale() {

        if (root instanceof com.sun.tools.javadoc.RootDocImpl)

            return ((com.sun.tools.javadoc.RootDocImpl)root).getLocale();

        else

            return Locale.getDefault();

    }

}