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.common;
018
019import java.util.ArrayList;
020import java.util.List;
021
022public class GenericImageMetadata implements ImageMetadata {
023
024    public static class GenericImageMetadataItem implements ImageMetadataItem {
025
026        private final String keyword;
027        private final String text;
028
029        public GenericImageMetadataItem(final String keyword, final String text) {
030            this.keyword = keyword;
031            this.text = text;
032        }
033
034        public String getKeyword() {
035            return keyword;
036        }
037
038        public String getText() {
039            return text;
040        }
041
042        @Override
043        public String toString() {
044            return toString(null);
045        }
046
047        @Override
048        public String toString(final String prefix) {
049            final String result = keyword + ": " + text;
050            if (null != prefix) {
051                return prefix + result;
052            }
053            return result;
054        }
055    }
056
057    private static final String NEWLINE = System.lineSeparator();
058
059    private final List<ImageMetadataItem> items = new ArrayList<>();
060
061    public void add(final ImageMetadataItem item) {
062        items.add(item);
063    }
064
065    public void add(final String keyword, final String text) {
066        add(new GenericImageMetadataItem(keyword, text));
067    }
068
069    @Override
070    public List<? extends ImageMetadataItem> getItems() {
071        return new ArrayList<>(items);
072    }
073
074    @Override
075    public String toString() {
076        return toString(null);
077    }
078
079    @Override
080    public String toString(String prefix) {
081        if (null == prefix) {
082            prefix = "";
083        }
084
085        final StringBuilder result = new StringBuilder();
086        for (int i = 0; i < items.size(); i++) {
087            if (i > 0) {
088                result.append(NEWLINE);
089            }
090            // if (null != prefix)
091            // result.append(prefix);
092
093            final ImageMetadataItem item = items.get(i);
094            result.append(item.toString(prefix + "\t"));
095
096            // Debug.debug("prefix", prefix);
097            // Debug.debug("item", items.get(i));
098            // Debug.debug();
099        }
100        return result.toString();
101    }
102
103}