/*

 * Copyright (c) 1996, 2011, 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 sun.awt;

import java.nio.charset.Charset;

import java.nio.charset.CharsetEncoder;

import java.nio.charset.StandardCharsets;

import sun.nio.cs.HistoricallyNamedCharset;

public class FontDescriptor implements Cloneable {

    static {

        NativeLibLoader.loadLibraries();

        initIDs();

    }

    String nativeName;

    public CharsetEncoder encoder;

    String charsetName;

    private int[] exclusionRanges;

    public FontDescriptor(String nativeName, CharsetEncoder encoder,

                          int[] exclusionRanges){

        this.nativeName = nativeName;

        this.encoder = encoder;

        this.exclusionRanges = exclusionRanges;

        this.useUnicode = false;

        Charset cs = encoder.charset();

        if (cs instanceof HistoricallyNamedCharset)

            this.charsetName = ((HistoricallyNamedCharset)cs).historicalName();

        else

            this.charsetName = cs.name();

    }

    public String getNativeName() {

        return nativeName;

    }

    public CharsetEncoder getFontCharsetEncoder() {

        return encoder;

    }

    public String getFontCharsetName() {

        return charsetName;

    }

    public int[] getExclusionRanges() {

        return exclusionRanges;

    }

    /**

     * Return true if the character is exclusion character.

     */

    public boolean isExcluded(char ch){

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

            int lo = (exclusionRanges[i++]);

            int up = (exclusionRanges[i++]);

            if (ch >= lo && ch <= up){

                return true;

            }

        }

        return false;

    }

    public String toString() {

        return super.toString() + " [" + nativeName + "|" + encoder + "]";

    }

    /**

     * Initialize JNI field and method IDs

     */

    private static native void initIDs();

    public CharsetEncoder unicodeEncoder;

    boolean useUnicode; // set to true from native code on Unicode-based systems

    public boolean useUnicode() {

        if (useUnicode && unicodeEncoder == null) {

            try {

                this.unicodeEncoder = isLE?

                    StandardCharsets.UTF_16LE.newEncoder():

                    StandardCharsets.UTF_16BE.newEncoder();

            } catch (IllegalArgumentException x) {}

        }

        return useUnicode;

    }

    static boolean isLE;

    static {

        String enc = (String) java.security.AccessController.doPrivileged(

           new sun.security.action.GetPropertyAction("sun.io.unicode.encoding",

                                                          "UnicodeBig"));

        isLE = !"UnicodeBig".equals(enc);

    }

}