base64test.Base64Test.java Source code

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Here is the source code for base64test.Base64Test.java

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package base64test;

import java.io.File;
import java.io.FileWriter;
import java.io.IOException;
import java.io.PrintWriter;
import java.nio.file.Files;
import java.nio.file.Path;
import org.apache.commons.codec.binary.Base64;

/**
 *
 * @author mblanton
 */
public class Base64Test {

    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) {
        try {
            if (!Base64.isBase64(args[0])) {
                throw new Exception("Arg 1 is not a Base64 string!");
            } else {
                String decodedBase64String = new String(Base64.decodeBase64(args[0]));
                File tempFile = File.createTempFile("base64Test", ".tmp");
                tempFile.deleteOnExit();
                FileWriter fw = new FileWriter(tempFile, false);
                PrintWriter pw = new PrintWriter(fw);
                pw.write(decodedBase64String);
                pw.close();
                String fileType = getFileType(tempFile.toPath());
                System.out.println(fileType);
                System.in.read();
            }
        } catch (Exception e) {
            System.err.println(e.getMessage());
        }
    }

    public static String getFileType(Path filePath) {
        String fileType = "Undetermined";
        try {
            fileType = Files.probeContentType(filePath);
        } catch (IOException ioE) {
            System.err.println(
                    "ERROR: Unable to determine file type for " + filePath.toString() + " due to exception " + ioE);
        }

        return fileType;
    }

}