Util.java Source code

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Here is the source code for Util.java

Source

/*
 * Copyright 2006 - 2008 Georges Stephan
 * 
 * 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.
 */

import java.util.logging.*;

import java.io.*;

/**
 * 
 * @author Georges Stephan
 */

public class Util {
    private static Logger logger = Logger.getLogger(Util.class.getName());

    public static String validateString(String aString) {
        if (aString == null)
            return ("");

        aString = aString.replace('\'', ' ');
        aString = aString.trim();
        return (aString);
    }

    public static String removeNonDigits(String aString) {
        StringBuffer newString = new StringBuffer();
        for (int x = 0; x < aString.length(); x++) {
            if (Character.isDigit(aString.charAt(x)))
                newString.append(aString.charAt(x));
        }
        return (newString.toString());
    }

    public static void createHome() throws Exception {
        File ch = new File(System.getProperty("user.home") + File.separator + ".dataform");
        if (!ch.exists()) {
            if (!ch.mkdir())
                throw new Exception("Failed to create the dataform configuration directory");
        }
    }

    public static String getHomeDir() {
        return (System.getProperty("user.home") + File.separator + ".dataform" + File.separator);
    }

    public static boolean retreiveTextFileFromJar(String resourceName, String targetDirectory) throws Exception {
        boolean found = false;
        if (resourceName != null) {
            InputStream is = Util.class.getResourceAsStream(resourceName);
            if (is == null)
                logger.log(Level.WARNING, "The resource '" + resourceName + "' was not found.");
            BufferedReader br = new BufferedReader(new InputStreamReader(is));
            String line;
            String lineSep = System.getProperty("line.separator");
            StringBuffer sb = new StringBuffer();
            while ((line = br.readLine()) != null) {
                sb.append(line);
                sb.append(lineSep);
            }
            is.close();
            if (sb != null) {
                if (sb.length() > 0) {
                    FileWriter temp = new FileWriter(targetDirectory + File.separator + resourceName);
                    temp.write(sb.toString());
                    temp.close();
                    found = true;
                }
            }
        }
        return (found);
    }

    public static boolean retreiveBinaryFileFromJar(String resourceName, String targetDirectory, Object resource)
            throws Exception {
        boolean found = false;
        if (resourceName != null) {
            InputStream is = resource.getClass().getResourceAsStream(resourceName);
            if (is == null)
                throw new Exception("Resource " + resourceName + " was not found.");
            BufferedReader br = new BufferedReader(new InputStreamReader(is));
            FileOutputStream fos = new FileOutputStream(targetDirectory + File.separator
                    + resourceName.substring(resourceName.lastIndexOf('/'), resourceName.length()));
            byte[] buffer = new byte[1024];
            int bytesRead;

            while ((bytesRead = is.read(buffer)) != -1) {
                fos.write(buffer, 0, bytesRead);
            }
            fos.flush();
            br.close();
            is.close();
            found = true;
        } else {
            found = false;
        }
        return found;
    }

}