com.bekwam.mavenpomupdater.data.IOUtils.java Source code

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Here is the source code for com.bekwam.mavenpomupdater.data.IOUtils.java

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/*
 * Copyright 2014 Bekwam, Inc 
 * 
 * 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 com.bekwam.mavenpomupdater.data;

import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.util.Properties;

import javax.jnlp.FileContents;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;

public class IOUtils {

    private Log log = LogFactory.getLog(IOUtils.class);

    public Properties getProperties(FileContents fc) throws IOException {
        InputStream is = null;
        Properties properties = new Properties();
        try {
            is = fc.getInputStream();
            properties.load(is);
        } finally {
            try {
                if (is != null) {
                    is.close();
                }
            } catch (IOException exc) {
                log.warn("can't close input stream", exc);
            }
        }
        return properties;
    }

    public void setProperties(FileContents fc, String key, String value, String comment) throws IOException {

        OutputStream os = null;
        Properties properties = new Properties();
        try {
            os = fc.getOutputStream(true); // true -> overwrite 
            properties.put(key, value);
            properties.store(os, comment);
        } finally {
            try {
                if (os != null) {
                    os.close();
                }
            } catch (IOException exc) {
                log.warn("can't close output stream", exc);
            }
        }
    }
}