/*
 **********************************************************************
 * Copyright (c) 2005-2011, International Business Machines
 * Corporation and others.  All Rights Reserved.
 **********************************************************************
 * Author: John Emmons
 **********************************************************************
 */
package org.unicode.cldr.posix;

import java.io.PrintWriter;
import java.nio.charset.Charset;

import org.unicode.cldr.icu.SimpleConverter;
import org.unicode.cldr.util.CLDRFile;
import org.unicode.cldr.util.CldrUtility;
import org.unicode.cldr.util.Factory;
import org.unicode.cldr.util.SupplementalDataInfo;

import com.ibm.icu.lang.UCharacter;
import com.ibm.icu.lang.UProperty;
import com.ibm.icu.lang.UScript;
import com.ibm.icu.text.UnicodeSet;
import com.ibm.icu.text.UnicodeSetIterator;

/**
 * Class to generate POSIX format from CLDR.
 * 
 * @author jcemmons
 */

public class POSIXLocale {

    String locale_name;
    String codeset;
    POSIX_LCCtype lc_ctype;
    POSIX_LCCollate lc_collate;
    POSIX_LCNumeric lc_numeric;
    POSIX_LCMonetary lc_monetary;
    POSIX_LCTime lc_time;
    POSIX_LCMessages lc_messages;
    POSIXVariant variant;

    public POSIXLocale(String locale_name, UnicodeSet repertoire, Charset cs, String codeset, UnicodeSet collateset,
        POSIXVariant variant) throws Exception {

        this.locale_name = locale_name;
        this.codeset = codeset;
        this.variant = variant;

        Factory mainFactory = Factory.make(CldrUtility.MAIN_DIRECTORY, ".*");
        Factory suppFactory = Factory.make(CldrUtility.DEFAULT_SUPPLEMENTAL_DIRECTORY, ".*");
        Factory collFactory = Factory.make(CldrUtility.COLLATION_DIRECTORY, ".*");
        CLDRFile doc = mainFactory.make(locale_name, true);
        SupplementalDataInfo supp = SupplementalDataInfo.getInstance(CldrUtility.DEFAULT_SUPPLEMENTAL_DIRECTORY);
        CLDRFile char_fallbk = suppFactory.make("characters", false);
        CLDRFile collrules = collFactory.makeWithFallback(locale_name);

        if (repertoire.isEmpty() && codeset.equals("UTF-8")) // Generate default repertoire set from exemplar
                                                             // characters;
        {
            String SearchLocation = "//ldml/characters/exemplarCharacters";
            UnicodeSet ExemplarCharacters = new UnicodeSet(doc.getStringValue(SearchLocation));
            UnicodeSetIterator ec = new UnicodeSetIterator(ExemplarCharacters);
            while (ec.next())
            {
                if ((ec.codepoint != UnicodeSetIterator.IS_STRING) && (ec.codepoint <= 0x00ffff))
                    repertoire.add(ec.codepoint);
            }
            UnicodeSet CaseFoldedExemplars = new UnicodeSet(ExemplarCharacters.closeOver(UnicodeSet.CASE));
            UnicodeSetIterator cfe = new UnicodeSetIterator(CaseFoldedExemplars);
            while (cfe.next())
            {
                if ((cfe.codepoint != UnicodeSetIterator.IS_STRING) && (cfe.codepoint <= 0x00ffff))
                    repertoire.add(cfe.codepoint);
            }

            UnicodeSetIterator it = new UnicodeSetIterator(repertoire);
            int PreviousScript = UScript.INVALID_CODE;
            while (it.next())
            {
                if ((it.codepoint != UnicodeSetIterator.IS_STRING) && (it.codepoint <= 0x00ffff))
                {
                    int Script = UScript.getScript(it.codepoint);
                    if (Script != UScript.COMMON &&
                        Script != UScript.INHERITED &&
                        Script != UScript.INVALID_CODE &&
                        Script != UScript.HAN &&
                        Script != PreviousScript) // Hopefully this speeds up the process...
                    {
                        UnicodeSet ThisScript = new UnicodeSet().applyIntPropertyValue(UProperty.SCRIPT, Script);
                        UnicodeSetIterator ts = new UnicodeSetIterator(ThisScript);
                        while (ts.next())
                        {
                            if ((ts.codepoint != UnicodeSetIterator.IS_STRING) && (ts.codepoint <= 0x00ffff))
                                repertoire.add(ts.codepoint);
                        }
                        PreviousScript = Script;
                    }
                }
            }

            repertoire.add(0x0000, 0x007f); // Always add the ASCII set

        }
        else if (!codeset.equals("UTF-8"))
        {
            UnicodeSet csset = new SimpleConverter(cs).getCharset();
            repertoire = new UnicodeSet(UnicodeSet.MIN_VALUE, UnicodeSet.MAX_VALUE).retainAll(csset);
            POSIXUtilities.setRepertoire(repertoire);
        }

        UnicodeSetIterator rep = new UnicodeSetIterator(repertoire);
        while (rep.next())
        {
            if (!UCharacter.isDefined(rep.codepoint) && (rep.codepoint != UnicodeSetIterator.IS_STRING))
                repertoire.remove(rep.codepoint);
        }

        POSIXUtilities.setCharFallback(char_fallbk);

        lc_collate = new POSIX_LCCollate(doc, repertoire, collrules, collateset, codeset, variant);

        if (codeset.equals("UTF-8"))
        {
            UnicodeSet tailored = lc_collate.col.getTailoredSet();

            // Add the tailored characters, and close over script

            UnicodeSetIterator it = new UnicodeSetIterator(tailored);
            int PreviousScript = UScript.INVALID_CODE;
            while (it.next())
            {
                if (it.codepoint != UnicodeSetIterator.IS_STRING && (it.codepoint <= 0x00ffff))
                {
                    int Script = UScript.getScript(it.codepoint);
                    if (Script != UScript.COMMON &&
                        Script != UScript.INHERITED &&
                        Script != UScript.INVALID_CODE &&
                        Script != UScript.HAN &&
                        Script != PreviousScript) // Hopefully this speeds up the process...
                    {
                        UnicodeSet ThisScript = new UnicodeSet().applyIntPropertyValue(UProperty.SCRIPT, Script);
                        UnicodeSetIterator ts = new UnicodeSetIterator(ThisScript);
                        while (ts.next())
                        {
                            if ((ts.codepoint != UnicodeSetIterator.IS_STRING) && (ts.codepoint <= 0x00ffff))
                                repertoire.add(ts.codepoint);
                        }
                        PreviousScript = Script;
                    }
                }
            }
        }

        lc_ctype = new POSIX_LCCtype(doc, repertoire);
        lc_numeric = new POSIX_LCNumeric(doc);
        lc_monetary = new POSIX_LCMonetary(doc, supp, variant);
        lc_time = new POSIX_LCTime(doc, variant);
        lc_messages = new POSIX_LCMessages(doc, locale_name, variant);

    } // end POSIXLocale ( String locale_name, String cldr_data_location );

    public void write(PrintWriter out) {

        out.println("comment_char *");
        out.println("escape_char /");
        out.println("");
        out.println("*************************************************************************************************");
        out.println("* POSIX Locale                                                                                  *");
        out.println("* Generated automatically from the Unicode Character Database and Common Locale Data Repository *");
        out.println("* see http://www.opengroup.org/onlinepubs/009695399/basedefs/xbd_chap07.html                    *");
        out.println("* Locale Name : " + locale_name + "   Codeset : " + codeset);
        out.println("*************************************************************************************************");
        out.println("* Copyright 1991-2011 Unicode, Inc. All rights reserved. Distributed under the Terms of Use in  *");
        out.println("* http://www.unicode.org/copyright.html.                                                        *");
        out.println("*                                                                                               *");
        out.println("* Permission is hereby granted, free of charge, to any person obtaining a copy of the Unicode   *");
        out.println("* data files and any associated documentation (the \"Data Files\") or Unicode software and any    *");
        out.println("* associated documentation (the \"Software\") to deal in the Data Files or Software without       *");
        out.println("* restriction, including without limitation the rights to use, copy, modify, merge, publish,    *");
        out.println("* distribute, and/or sell copies of the Data Files or Software, and to permit persons to whom   *");
        out.println("* the Data Files or Software are furnished to do so, provided that (a) the above copyright      *");
        out.println("* notice(s) and this permission notice appear with all copies of the Data Files or Software,    *");
        out.println("* (b) both the above copyright notice(s) and this permission notice appear in associated        *");
        out.println("* documentation, and (c) there is clear notice in each modified Data File or in the Software as *");
        out.println("* well as in the documentation associated with the Data File(s) or Software that the data or    *");
        out.println("* software has been modified.                                                                   *");
        out.println("*                                                                                               *");
        out.println("* THE DATA FILES AND SOFTWARE ARE PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR    *");
        out.println("* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A        *");
        out.println("* PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS. IN NO EVENT SHALL THE COPYRIGHT *");
        out.println("* HOLDER OR HOLDERS INCLUDED IN THIS NOTICE BE LIABLE FOR ANY CLAIM, OR ANY SPECIAL INDIRECT OR *");
        out.println("* CONSEQUENTIAL DAMAGES, OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, *");
        out.println("* WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN   *");
        out.println("* CONNECTION WITH THE USE OR PERFORMANCE OF THE DATA FILES OR SOFTWARE.                         *");
        out.println("*************************************************************************************************");
        out.println("");

        lc_ctype.write(out);
        lc_collate.write(out);
        lc_numeric.write(out);
        lc_monetary.write(out);
        lc_time.write(out, variant);
        lc_messages.write(out);

    } // end write(PrintWriter out);

}
