kr.ac.kaist.swrc.jhannanum.share.JSONReader.java Source code

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Here is the source code for kr.ac.kaist.swrc.jhannanum.share.JSONReader.java

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/*  Copyright 2010, 2011 Semantic Web Research Center, KAIST
    
This file is part of JHanNanum.
    
JHanNanum is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
    
JHanNanum 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 for more details.
    
You should have received a copy of the GNU General Public License
along with JHanNanum.  If not, see <http://www.gnu.org/licenses/>   */

package kr.ac.kaist.swrc.jhannanum.share;

import min.thomas.io.BufferedReaderBuilder;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;

import java.io.BufferedReader;
import java.io.IOException;

/**
 * <code>JSONReader</code> is for reading data from the configuration files for each plug-in.
 * 
 * @see <a href="http://json.org">http://json.org</a>
 * @author Sangwon Park (hudoni@world.kaist.ac.kr), CILab, SWRC, KAIST
 */
public class JSONReader {
    /** the path of the json file */
    private String filePath = null;

    /** json object */
    private JSONObject json = null;

    /**
     * Constructor.
     * @param filePath - the file path of the plug-in configuration file
     * @throws JSONException
     * @throws IOException
     */
    public JSONReader(String filePath) throws JSONException, IOException {
        //      FileReader reader = new FileReader(filePath);
        BufferedReader reader = BufferedReaderBuilder.fromRelativePath(filePath);
        StringBuffer buf = new StringBuffer();
        char[] cbuf = new char[4096];
        int idx = 0;
        while ((idx = reader.read(cbuf)) != -1) {
            buf.append(cbuf, 0, idx);
        }
        json = new JSONObject(buf.toString());

        reader.close();
    }

    /**
     * Returns the name of the plug-in.
     * @return the name of the plug-in
     * @throws JSONException
     */
    public String getName() throws JSONException {
        return json.getString("name");
    }

    /**
     * Returns the version of the plug-in.
     * @return the version of the plug-in
     * @throws JSONException
     */
    public String getVersion() throws JSONException {
        return json.getString("version");
    }

    /**
     * Returns the author of the plug-in
     * @return the author of the plug-in
     * @throws JSONException
     */
    public String getAuthor() throws JSONException {
        String res = "";

        JSONArray array = json.getJSONArray("author");
        JSONObject obj = null;
        for (int i = 0; i < array.length(); i++) {
            if (i > 0) {
                res += ", ";
            }
            obj = array.getJSONObject(i);
            if (!obj.getString("email").equals("null")) {
                res += obj.getString("name") + "<" + obj.getString("email") + ">";
            } else {
                res += obj.getString("name");
            }
        }
        return res;
    }

    /**
     * Returns the description of the plug-in
     * @return the description of the plug-in
     * @throws JSONException
     */
    public String getDescription() throws JSONException {
        return json.getString("description");
    }

    /**
     * Returns the type of the plug-in
     * @return the type of the plug-in
     * @throws JSONException
     */
    public String getType() throws JSONException {
        return json.getString("type");
    }

    /**
     * Returns the value mapped with the specified key.
     * @return the value mapped with the specified key
     * @throws JSONException
     */
    public String getValue(String key) throws JSONException {
        return json.getString(key);
    }

    /**
     * Returns the file path of the configuration file.
     * @return the file path of the configuration file
     */
    public String getFilePath() {
        return filePath;
    }

    /**
     * Sets the configuration file for a plug-in.
     * @param filePath - the configuration file path
     */
    public void setFilePath(String filePath) {
        this.filePath = filePath;
    }
}