/*

 * Copyright (c) 2011, 2019, 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

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 */

package build.tools.generatecharacter;

import java.util.regex.*;

import java.util.*;

import java.io.*;

/**

 * A PropList object contains the lists of code points that have

 * the same Unicode property defined in PropList.txt and

 * DerivedCoreProperties.txt

 *

 * @author Xueming Shen

 */

public class PropList {

    public static PropList readSpecFile(File file, int plane)

        throws IOException

    {

        return new PropList(file, plane);

    }

    public List<Integer> codepoints(String name) {

        return propMap.get(name);

    }

    public Set<String> names() {

        return propMap.keySet();

    }

    public void putAll(PropList pl) {

        pl.names().stream()

            .forEach(name -> propMap.put(name, pl.codepoints(name)));

    }

    private Map<String, List<Integer>> propMap =

        new LinkedHashMap<String, List<Integer>>();

    private PropList(File file, int plane) throws IOException {

        int i, j;

        BufferedReader sbfr = new BufferedReader(new FileReader(file));

        Matcher m = Pattern.compile("(\\p{XDigit}+)(?:\\.{2}(\\p{XDigit}+))?\\s*;\\s+(\\w+)\\s+#.*").matcher("");

        String line = null;

        int lineNo = 0;

        while ((line = sbfr.readLine()) != null) {

            lineNo++;

            if (line.length() <= 1 || line.charAt(0) == '#') {

                continue;

            }

            m.reset(line);

            if (m.matches()) {

                int start = Integer.parseInt(m.group(1), 16);

                if ((start >> 16) != plane)

                    continue;

                int end = (m.group(2)==null)?start

                          :Integer.parseInt(m.group(2), 16);

                String name = m.group(3);

                start &= 0xffff;

                end &= 0xffff;

                List<Integer> list = propMap.get(name);

                if (list == null) {

                    list = new ArrayList<Integer>();

                    propMap.put(name, list);

                }

                while (start <= end)

                    list.add(start++);

            } else {

                System.out.printf("Warning: Unrecognized line %d <%s>%n", lineNo, line);

            }

        }

        sbfr.close();

        //for (String name: propMap.keySet()) {

        //    System.out.printf("%s    %d%n", name, propMap.get(name).size());

        //}

    }

    public static void main(String[] args) throws IOException {

        readSpecFile(new File(args[0]), Integer.decode(args[1]));

    }

}