001/*
002 * Licensed to the Apache Software Foundation (ASF) under one or more
003 * contributor license agreements.  See the NOTICE file distributed with
004 * this work for additional information regarding copyright ownership.
005 * The ASF licenses this file to You under the Apache License, Version 2.0
006 * (the "License"); you may not use this file except in compliance with
007 * the License.  You may obtain a copy of the License at
008 *
009 *      http://www.apache.org/licenses/LICENSE-2.0
010 *
011 * Unless required by applicable law or agreed to in writing, software
012 * distributed under the License is distributed on an "AS IS" BASIS,
013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014 * See the License for the specific language governing permissions and
015 * limitations under the License.
016 */
017package org.apache.commons.imaging.formats.png;
018
019public abstract class PngText {
020    public final String keyword;
021    public final String text;
022
023    public PngText(final String keyword, final String text) {
024        this.keyword = keyword;
025        this.text = text;
026    }
027
028    public static class Text extends PngText {
029        public Text(final String keyword, final String text) {
030            super(keyword, text);
031        }
032    }
033
034    public static class Ztxt extends PngText {
035        public Ztxt(final String keyword, final String text) {
036            super(keyword, text);
037        }
038    }
039
040    public static class Itxt extends PngText {
041
042        /*
043         * The language tag defined in [RFC-3066] indicates the human language
044         * used by the translated keyword and the text. Unlike the keyword, the
045         * language tag is case-insensitive. It is an ISO 646.IRV:1991 [ISO 646]
046         * string consisting of hyphen-separated words of 1-8 alphanumeric
047         * characters each (for example cn, en-uk, no-bok, x-klingon,
048         * x-KlInGoN). If the first word is two or three letters long, it is an
049         * ISO language code [ISO-639]. If the language tag is empty, the
050         * language is unspecified.
051         */
052        public final String languageTag;
053
054        public final String translatedKeyword;
055
056        public Itxt(final String keyword, final String text, final String languageTag, final String translatedKeyword) {
057            super(keyword, text);
058            this.languageTag = languageTag;
059            this.translatedKeyword = translatedKeyword;
060        }
061    }
062
063}