Package net.ssehub.easy.basics.io

Class FileUtils

java.lang.Object
net.ssehub.easy.basics.io.FileUtils
public class FileUtils extends Object
Some file utility methods (may partially be taken from commons.io but this is currently no defined as dependency of this bundle - see standalone).
Author:
Holger Eichelberger

  • Field Details

    • IS_WINDOWS

      private static final boolean IS_WINDOWS

  • Constructor Details

    • FileUtils

      public FileUtils()

  • Method Details

    • isFileURI

      public static boolean isFileURI(URI uri)
      Returns whether the given uri is a file URI as returned, e.g., by a File.
      Parameters:
      uri - the URI (ignored if null)
      Returns:
      true for a file URI, false else

    • isFileURL

      public static boolean isFileURL(URL url)
      Returns whether the given url is a JAR URL as returned, e.g., by a classloader.
      Parameters:
      url - the URL (ignored if null)
      Returns:
      true for a JAR URL, false else

    • copyFile

      public static void copyFile(File target, File source) throws IOException
      Copies a file.
      Parameters:
      target - the target file
      source - the source file
      Throws:
      IOException - in any case of I/O problem, trying to close the involved files before end if possible

    • copyToFile

      public static void copyToFile(File file, InputStream in) throws IOException
      Copies the contents of in at the current position to file. Does not attempt to close in. Uses a default buffer of size 1024.
      Parameters:
      file - the file to write to
      in - the input stream
      Throws:
      IOException - in any case of I/O problem, trying to close file before end if possible

    • copyToFile

      public static void copyToFile(File file, InputStream in, byte[] buffer) throws IOException
      Copies the contents of in at the current position to file. Does not attempt to close in. Uses a default buffer of size 1024.
      Parameters:
      file - the file to write to
      in - the input stream
      buffer - a copy buffer (if null a default one of size 1024 is used)
      Throws:
      IOException - in any case of I/O problem, trying to close file before if possible

    • closeQuietly

      public static void closeQuietly(Closeable closeable)
      Closes a closeable quietly, i.e., without exception.
      Parameters:
      closeable - the closeable

    • createIfNotExists

      public static void createIfNotExists(File file)
      Creates a (physical) file if it does not exist.
      Parameters:
      file - the file (may be null, ignored then)

    • createTmpDir

      public static File createTmpDir(String name)
      Creates a temporary directory and deletes an existing one if it already exists. Deletion on exit of JVM is enabled for the resulting directory.
      Parameters:
      name - the name of the directory within the standard temporary folder
      Returns:
      the temporary directory

    • createTmpDir

      public static File createTmpDir(String name, boolean deleteIfExists)
      Creates a temporary directory. Deletion on exit of JVM is enabled for the resulting directory.
      Parameters:
      name - the name of the directory within the standard temporary folder
      deleteIfExists - delete an existing one if it already exists
      Returns:
      the temporary directory

    • appendToLogFile

      public static void appendToLogFile(String text)
      Appends text to "easy-debug.log" in user home. [debugging]
      Parameters:
      text - the text

    • appendToFile

      public static void appendToFile(File file, String text)
      Appends text to file. [debugging]
      Parameters:
      file - the file
      text - the text

    • resolve

      public static final File resolve(File file)
      Resolves a file or a symlink.
      Parameters:
      file - the file to be resolved
      Returns:
      the resolved file or file if it cannot be resolved

    • resolve

      public static final File[] resolve(File... files)
      Resolves files/symlinks.
      Parameters:
      files - the files to be resolved, may be null
      Returns:
      the resolved files or null
      See Also:

    • listFiles

      public static final File[] listFiles(File file)
      Lists files in file after resolving file and its contained files.
      Parameters:
      file - the file to list the files for, may be null
      Returns:
      the resolved contained files
      See Also: