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/* ____ ____ ____ ____ ______ *\
** / __// __ \/ __// __ \/ ____/ SOcos COmpiles Scala **
** __\_ \/ /_/ / /__/ /_/ /\_ \ (c) 2002, LAMP/EPFL **
** /_____/\____/\___/\____/____/ **
\* */
// $Id$
package scala.tools.util;
import java.io.File;
import java.io.IOException;
import java.util.Iterator;
/** This class implements an empty abstract regular file. */
public class VirtualFile extends AbstractFile {
//########################################################################
// Private Fields
/** The file name */
private final String name;
/** The file path */
private final String path;
//########################################################################
// Public Constructors
/**
* Initializes this instance with the specified name and an
* identical path.
*/
public VirtualFile(String name) {
this(name, name);
}
/** Initializes this instance with the specified name and path. */
public VirtualFile(String name, String path) {
this.name = name;
this.path = path;
assert name != null && path != null: name + " - " + path;
}
//########################################################################
// Public Methods
/** Returns the name of this abstract file. */
public String getName() {
return name;
}
/** Returns the path of this abstract file. */
public String getPath() {
return path;
}
/** Returns null. */
public final File getFile() {
return null;
}
/** Is this abstract file a directory? */
public boolean isDirectory() {
return false;
}
/** Returns the time that this abstract file was last modified. */
public long lastModified() {
return Long.MIN_VALUE;
}
/** Reads the content of this abstract file into a byte array. */
public byte[] read() throws IOException {
assert !isDirectory(): "cannot read directory '" + this + "'";
return new byte[0];
}
/** Returns all abstract subfiles of this abstract directory. */
public Iterator/*<AbstractFile>*/ list() {
assert isDirectory(): "not a directory '" + this + "'";
return EmptyIterator.object;
}
/**
* Returns the abstract file in this abstract directory with the
* specified name. If there is no such file, returns null. The
* argument "directory" tells whether to look for a directory or
* or a regular file.
*/
public AbstractFile lookupName(String name, boolean directory) {
assert isDirectory(): "not a directory '" + this + "'";
return null;
}
//########################################################################
}
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