001/**
002 * Copyright (c) 2011, The University of Southampton and the individual contributors.
003 * All rights reserved.
004 *
005 * Redistribution and use in source and binary forms, with or without modification,
006 * are permitted provided that the following conditions are met:
007 *
008 *   *  Redistributions of source code must retain the above copyright notice,
009 *      this list of conditions and the following disclaimer.
010 *
011 *   *  Redistributions in binary form must reproduce the above copyright notice,
012 *      this list of conditions and the following disclaimer in the documentation
013 *      and/or other materials provided with the distribution.
014 *
015 *   *  Neither the name of the University of Southampton nor the names of its
016 *      contributors may be used to endorse or promote products derived from this
017 *      software without specific prior written permission.
018 *
019 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
020 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
021 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
022 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
023 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
024 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
025 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
026 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
027 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
028 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
029 */
030package org.openimaj.tools.imagecollection.collection.config;
031
032import java.io.IOException;
033import java.io.PrintWriter;
034import java.text.ParseException;
035import java.util.Scanner;
036
037import org.openimaj.io.ReadWriteableASCII;
038
039import com.jayway.jsonpath.JsonPath;
040
041/**
042 * An ImageCollectionConfig can be written to and read from an ASCII str
043 * @author Sina Samangooei (ss@ecs.soton.ac.uk)
044 *
045 */
046public class ImageCollectionConfig implements ReadWriteableASCII{
047
048        
049        private String json;
050
051        public ImageCollectionConfig(){
052                this.json = "{}";
053        }
054        
055
056        public ImageCollectionConfig(String json) {
057                this.json = json;
058        }
059
060
061        @Override
062        public void readASCII(Scanner in) throws IOException {
063                StringBuilder builder = new StringBuilder();
064                while(in.hasNextLine())builder.append(in.nextLine());
065                json = builder.toString();
066                try {
067                        read("$");
068                } catch (ParseException e) {
069                        throw new IOException("Could not validate json");
070                }
071        }
072
073        @Override
074        public String asciiHeader() {
075                return "";
076        }
077
078        @Override
079        public void writeASCII(PrintWriter out) throws IOException {
080                out.print(json);
081        }
082
083        public <T> T read(String path) throws ParseException {
084                @SuppressWarnings("unchecked")
085                T i = (T)((Object)JsonPath.read(this.json, path));
086                
087                return i;
088        }
089        
090        public boolean containsValid(String videoTag) {
091                String r;
092                try {
093                        r = read(videoTag);
094                } catch (ParseException e) {
095                        return false;
096                }
097                return r!=null;
098        }
099
100        
101}