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