net.sf.dsig.helpers.UserHomeSettingsParser.java Source code

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Here is the source code for net.sf.dsig.helpers.UserHomeSettingsParser.java

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/*
 * Copyright 2007-2014 Anestis Georgiadis
 *  
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 * http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and 
 * limitations under the License.
 */

package net.sf.dsig.helpers;

import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.util.Properties;

import org.apache.commons.io.IOUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

public class UserHomeSettingsParser {

    private static final Logger logger = LoggerFactory.getLogger(UserHomeSettingsParser.class);

    public static Properties parse() {
        try {
            String userHome = System.getProperty("user.home");
            File dsigFolder = new File(userHome, ".dsig");
            if (!dsigFolder.exists() && !dsigFolder.mkdir()) {
                throw new IOException("Could not create .dsig folder in user home directory");
            }

            File settingsFile = new File(dsigFolder, "settings.properties");
            if (!settingsFile.exists()) {
                InputStream is = UserHomeSettingsParser.class.getResourceAsStream("/defaultSettings.properties");
                if (is != null) {
                    IOUtils.copy(is, new FileOutputStream(settingsFile));
                }
            }

            if (settingsFile.exists()) {
                Properties p = new Properties();
                FileInputStream fis = new FileInputStream(settingsFile);
                p.load(fis);
                IOUtils.closeQuietly(fis);
                return p;
            }
        } catch (IOException e) {
            logger.warn("Error while initialize settings", e);
        }

        return null;
    }

}