Constructor Detail

• NodeUtil

  public NodeUtil()

Method Detail

• isASCII

  public static boolean isASCII(byte[] buf)

  Indicates whether the bytes in a given buffer look like ASCII text or not. This is just a guess based on what characters are in there.

  Parameters:

  buf - the buffer to test

  Returns:

  true iff buf looks like ASCII

• hasHDS

  public static boolean hasHDS()

  Indicates whether the JNIHDS package is present. It might not be if the native libraries for this platform have not been installed.

  Returns:

  true iff JNIDHS is availble

• hasAST

  public static boolean hasAST()

  Indicates whether the JNIAST package is present. It might not be if the native libraries for this platform have not been installed.

  Returns:

  true iff JNIAST is available

• hasJAI

  public static boolean hasJAI()

  Indicates whether the Java Advanced Imaging classes are available. These are an extension to the J2SE1.4, so may not be present if they have not been installed.

  Returns:

  true iff JAI is available

• hasGUI

  public static boolean hasGUI()

  Indicates whether applications within this JVM should be considered to be running within a graphical context or not.

  Returns:

  true iff this JVM appears to be using graphical components

• setGUI

  public static void setGUI(boolean hasGUI)

  Sets whether applications running within this JVM should be considered to be running within a GUI or not.

  Parameters:

  hasGUI - true iff this JVM ought to be using graphical components

• getNodePath

  public static java.lang.String getNodePath(DataNode node)

  Returns the full path of a node, if possible. The idea is to give a human-readable string indictating what you're looking at, describing position within filesystem, tar archive, XML document, whatever.

  Parameters:

  node - node to trace

  Returns:

  node path, or null

• toString

  public static java.lang.String toString(DataNode node)

  Returns a short string representation of a DataNode. This is suitable for use as the string used in rendering the node in the tree.

  Returns:

  a string summarising the node