org.sleeksnap.Configuration.java Source code

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Here is the source code for org.sleeksnap.Configuration.java

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/**
 * Sleeksnap, the open source cross-platform screenshot uploader
 * Copyright (C) 2012 Nikki <nikki@nikkii.us>
 *
 * This program 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.
 *
 * This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.
 */
package org.sleeksnap;

import java.io.File;
import java.io.FileInputStream;
import java.io.FileWriter;
import java.io.IOException;

import org.json.JSONException;
import org.json.JSONObject;
import org.json.JSONTokener;

public class Configuration {

    /**
     * The configuration map
     */
    private JSONObject config = new JSONObject();

    /**
     * The file which we loaded from
     */
    private File file;

    /**
     * Empty constructor
     */
    public Configuration() {

    }

    /**
     * Check whether the configuration map contains a string
     * 
     * @param string
     *            The string
     * @return Whether it contains the string or not
     */
    public boolean contains(final String string) {
        return config.has(string);
    }

    /**
     * Get a generic object, auto casting
     * 
     * @param key
     *            The key
     * @return The result
     * @throws JSONException
     */
    @SuppressWarnings("unchecked")
    public <T> T get(final String key) {
        return (T) config.get(key);
    }

    /**
     * Get a boolean
     * 
     * @param key
     *            The key
     * @return The result
     * @throws JSONException
     */
    public boolean getBoolean(final String key) {
        return config.getBoolean(key);
    }

    @SuppressWarnings("unchecked")
    public <T> T getEnumValue(final String key, final Class<?> class1) {
        if (class1.isEnum()) {
            return (T) class1.getEnumConstants()[getInteger(key)];
        }
        return null;
    }

    /**
     * Get an integer
     * 
     * @param key
     *            The key
     * @return The integer
     * @throws JSONException
     */
    public int getInteger(final String key) {
        return config.getInt(key);
    }

    /**
     * Get an integer
     * 
     * @param key
     *            The key
     * @return The integer
     * @throws JSONException
     */
    public int getInteger(final String key, final int def) {
        return config.getInt(key, def);
    }

    /**
     * Get a map which is automatically cast to the class specified
     * 
     * @param key
     *            The key
     * @return The map attached to the specified key
     * @throws JSONException
     */
    public JSONObject getJSONObject(final String key) {
        return config.getJSONObject(key);
    }

    /**
     * Get an object
     * 
     * @param key
     *            The key
     * @return The object
     * @throws JSONException
     */
    public Object getObject(final String key) {
        return config.get(key);
    }

    /**
     * Get a string result
     * 
     * @param key
     *            The key
     * @return The string containing the setting for the key.
     * @throws JSONException
     */
    public String getString(final String key) {
        return config.getString(key);
    }

    public String getString(final String key, final String defaultValue) {
        return config.getString(key, defaultValue);
    }

    /**
     * Load the configuration from a file
     * 
     * @param file
     *            The file
     * @throws IOException
     *             If an error occurred while loading
     * @throws JSONException
     */
    public void load(final File file) throws IOException {
        this.file = file;
        try {
            final FileInputStream fInput = new FileInputStream(file);
            try {
                config = new JSONObject(new JSONTokener(fInput));
            } finally {
                fInput.close();
            }
        } catch (final RuntimeException e) {
            throw new IOException(e);
        }
    }

    /**
     * Load from a string
     * 
     * @param contents
     *            The JSON contents
     * @throws IOException
     */
    public void load(final String contents) throws IOException {
        try {
            config = new JSONObject(contents);
        } catch (final RuntimeException e) {
            throw new IOException(e);
        }
    }

    /**
     * Put a value
     * 
     * @param key
     *            The key
     * @param value
     *            The value
     * @throws JSONException
     */
    public void put(final String key, final Object value) {
        config.put(key, value);
    }

    /**
     * Save to the original file
     * 
     * @throws IOException
     *             If an error occurred
     */
    public void save() throws IOException {
        if (file == null) {
            throw new IOException("File not set! Cannot save to file");
        }
        final FileWriter writer = new FileWriter(file);
        try {
            writer.write(config.toString(4));
        } finally {
            writer.close();
        }
    }

    /**
     * Set the configuration file path
     * 
     * @param file
     *            The file
     */
    public void setFile(final File file) {
        this.file = file;
    }
}