DirectoryVerifyer.java

package com.meteogroup.grib2geotiff;

import java.io.File;
import java.io.IOException;

/**
 * Created by danielt on 26.09.15.
 */
public class DirectoryVerifyer {

  /**
   * @param inputDirectory
   * @throws IOException
   */
  public static void verifyInputDirectory(String inputDirectory) throws IOException {
    File dir = new File(inputDirectory).getCanonicalFile();
    if (!dir.isDirectory()) {
      throw new IOException("Selected input path is not a directory: " + dir.getAbsolutePath());
    }
    if (!dir.canRead()) {
      throw new IOException("Selected input directory is not readable: " + dir.getAbsolutePath());
    }
    if (!dir.exists()) {
      throw new IOException("Selected input path does not exist: " + dir.getAbsolutePath());
    }
  }

  /**
   * @param inputDirectory
   * @throws IOException
   */
  public static void verifyOutputDirectory(String inputDirectory) throws IOException {
    File dir = new File(inputDirectory);
    if (!dir.isDirectory()) {
      throw new IOException("Selected output path is not a directory: " + dir.getAbsolutePath());
    }
    if (!dir.canWrite()) {
      throw new IOException("Selected output directory is not writable: " + dir.getAbsolutePath());
    }
  }

}