svn commit: r432462 [5/21] - /incubator/harmony/enhanced/classlib/trunk/modules/luni/src/main/java/java/io/

[nd...@apache.org]

Modified: incubator/harmony/enhanced/classlib/trunk/modules/luni/src/main/java/java/io/File.java
URL: http://svn.apache.org/viewvc/incubator/harmony/enhanced/classlib/trunk/modules/luni/src/main/java/java/io/File.java?rev=432462&r1=432461&r2=432462&view=diff
==============================================================================
--- incubator/harmony/enhanced/classlib/trunk/modules/luni/src/main/java/java/io/File.java (original)
+++ incubator/harmony/enhanced/classlib/trunk/modules/luni/src/main/java/java/io/File.java Thu Aug 17 18:45:35 2006
@@ -1,1252 +1,1252 @@
-/* Copyright 1998, 2006 The Apache Software Foundation or its licensors, as applicable
- * 
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- * 
- *     http://www.apache.org/licenses/LICENSE-2.0
- * 
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package java.io;
-
-
-import java.net.URI;
-import java.net.URISyntaxException;
-import java.net.URL;
-import java.security.AccessController;
-
-import org.apache.harmony.luni.util.PriviAction;
-
-/**
- * File is a class which represents a file name or directory. The file may be
- * absolute relative to the root directory of the file system or relative to the
- * current directory in which the program is running.
- * <p>
- * This class provides methods for querying/changing information about the file
- * and also directory listing capabilities if the File represents a directory.
- * <p>
- * When manipulating file paths, the static fields of this class may be used to
- * determine the platform specific separators.
- * 
- * @see java.io.Serializable
- * @see java.lang.Comparable
- */
-
-public class File implements Serializable, Comparable<File> {
-	private static final long serialVersionUID = 301077366599181567L;
-
-	private String path;
-
-	byte[] properPath;
-
-	/**
-	 * System dependent file separator character.
-	 */
-	public static final char separatorChar;
-
-	/**
-	 * System dependent file separator String. The initial value of this field
-	 * is the System property "file.separator".
-	 */
-	public static final String separator;
-
-	/**
-	 * System dependent path separator character.
-	 */
-	public static final char pathSeparatorChar;
-
-	/**
-	 * System dependent path separator String. The initial value of this field
-	 * is the System property "path.separator".
-	 */
-	public static final String pathSeparator;
-
-	/* Temp file counter needs java.util.Random from mJava */
-	private static int counter;
-
-	private static boolean caseSensitive;
-
-	private static native void oneTimeInitialization();
-
-	static {
-		oneTimeInitialization();
-
-		// The default protection domain grants access to these properties
-		separatorChar = System.getProperty("file.separator", "\\").charAt(0); //$NON-NLS-1$ //$NON-NLS-2$
-		pathSeparatorChar = System.getProperty("path.separator", ";").charAt(0);  //$NON-NLS-1$//$NON-NLS-2$
-		separator = new String(new char[] { separatorChar }, 0, 1);
-		pathSeparator = new String(new char[] { pathSeparatorChar }, 0, 1);
-		caseSensitive = isCaseSensitiveImpl();
-	}
-
-	/**
-	 * Constructs a new File using the specified directory and name.
-	 * 
-	 * @param dir
-	 *            the directory for the file name
-	 * @param name
-	 *            the file name to be contained in the dir
-	 */
-
-	public File(File dir, String name) {
-		if (name != null) {
-			if (dir == null) {
-				this.path = fixSlashes(name);
-			} else {
-				this.path = calculatePath(dir.getPath(),name);
-			}
-		} else
-			throw new NullPointerException();
-	}
-
-	/**
-	 * Constructs a new File using the specified path.
-	 * 
-	 * @param path
-	 *            the path to be used for the file
-	 */
-	public File(String path) {
-		// NullPointerException thrown by fixSlashes
-		this.path = fixSlashes(path);
-	}
-
-	/**
-	 * Constructs a new File using the specified directory and name placing a
-	 * path separator between the two.
-	 * 
-	 * @param dirPath
-	 *            the directory for the file name
-	 * @param name
-	 *            the file name to be contained in the dir
-	 */
-	public File(String dirPath, String name) {
-		if (name != null) {
-			if (dirPath == null) {
-				this.path = fixSlashes(name);
-			} else {
-				this.path = calculatePath(dirPath, name);
-			}
-		} else
-			throw new NullPointerException();
-	}
-
-	/**
-	 * Constructs a new File using the path of the specified URI
-	 * 
-	 * <code>uri</code> needs to be an absolute and hierarchical
-	 * <code>URI </code> with file scheme, and non-empty path component, but
-	 * with undefined authority, query or fragment components.
-	 * 
-	 * @param uri
-	 *            the URI instance which will be used to construct this file
-	 * 
-	 * @throws IllegalArgumentException
-	 *             if <code>uri</code> does not comply with the conditions
-	 *             above.
-	 * 
-	 * @see #toURI
-	 * @see java.net.URI
-	 */
-	public File(URI uri) {
-		// check pre-conditions
-		checkURI(uri);
-		this.path = fixSlashes(uri.getPath());
-	}
-
-	private String calculatePath(String dirPath, String name) {
-		// Remove all the proceeding separator chars from name
-		name = fixSlashes(name);
-		while (name.length() > 0 && (name.charAt(0) == separatorChar))
-			name = name.substring(1, name.length());
-
-		// Ensure there is a separator char between dirPath and name
-		dirPath = fixSlashes(dirPath);
-		if (dirPath.length() > 0 && (dirPath.charAt(dirPath.length() - 1) == separatorChar)) {
-			return dirPath + name;
-		}
-
-		return dirPath + separatorChar + name;
-	}
-
-	private void checkURI(URI uri) {
-		if (!uri.isAbsolute()) {
-			throw new IllegalArgumentException(org.apache.harmony.luni.util.Msg.getString(
-					"K031a", uri)); //$NON-NLS-1$
-		} else if (!uri.getRawSchemeSpecificPart().startsWith("/")) { //$NON-NLS-1$
-			throw new IllegalArgumentException(org.apache.harmony.luni.util.Msg.getString(
-					"K031b", uri)); //$NON-NLS-1$
-		}
-
-		String temp = uri.getScheme();
-		if (temp == null || !temp.equals("file")) { //$NON-NLS-1$
-			throw new IllegalArgumentException(org.apache.harmony.luni.util.Msg.getString(
-					"K031c", uri)); //$NON-NLS-1$
-		}
-
-		temp = uri.getRawPath();
-		if (temp == null || temp.length() == 0) {
-			throw new IllegalArgumentException(org.apache.harmony.luni.util.Msg.getString(
-					"K031d", uri)); //$NON-NLS-1$
-		}
-
-		if (uri.getRawAuthority() != null) {
-			throw new IllegalArgumentException(org.apache.harmony.luni.util.Msg.getString(
-					"K031e", new String[] { "authority", uri.toString() })); //$NON-NLS-1$ //$NON-NLS-2$
-		}
-
-		if (uri.getRawQuery() != null)
-			throw new IllegalArgumentException(org.apache.harmony.luni.util.Msg.getString(
-					"K031e", new String[] { "query", uri.toString() }));  //$NON-NLS-1$//$NON-NLS-2$
-
-		if (uri.getRawFragment() != null)
-			throw new IllegalArgumentException(org.apache.harmony.luni.util.Msg.getString(
-					"K031e", new String[] { "fragment", uri.toString() })); //$NON-NLS-1$ //$NON-NLS-2$
-	}
-
-	private static native byte[][] rootsImpl();
-
-	private static native boolean isCaseSensitiveImpl();
-
-	/**
-	 * Lists the filesystem roots.
-	 * 
-	 * The Java platform may support zero or more filesystems, each with its own
-	 * platform-dependent root. Further, the canonical pathname of any file on
-	 * the system will always begin with one of the returned filesystem roots.
-	 * 
-	 * @return the array of filesystem roots
-	 */
-	public static File[] listRoots() {
-		byte[][] rootsList = rootsImpl();
-		if (rootsList == null)
-			return new File[0];
-		File result[] = new File[rootsList.length];
-		for (int i = 0; i < rootsList.length; i++)
-			result[i] = new File(org.apache.harmony.luni.util.Util.toString(rootsList[i]));
-		return result;
-	}
-
-	/**
-	 * The purpose of this method is to take a path and fix the slashes up. This
-	 * includes changing them all to the current platforms fileSeparator and
-	 * removing duplicates.
-	 */
-	private String fixSlashes(String origPath) {
-		int uncIndex = 1;
-		int length = origPath.length(), newLength = 0;
-		if (separatorChar == '/') // disable UNC names
-			uncIndex = 0;
-		else if (length > 2 && origPath.charAt(1) == ':')
-			uncIndex = 2;
-
-		boolean foundSlash = false;
-		char newPath[] = origPath.toCharArray();
-		for (int i = 0; i < length; i++) {
-			char pathChar = newPath[i];
-			if (pathChar == '\\' || pathChar == '/') {
-				/* UNC Name requires 2 leading slashes */
-				if ((foundSlash && i == uncIndex) || !foundSlash) {
-					newPath[newLength++] = separatorChar;
-					foundSlash = true;
-				}
-			} else {
-				// check for leading slashes before a drive
-				if (pathChar == ':'
-						&& uncIndex > 0
-						&& (newLength == 2 || (newLength == 3 && newPath[1] == separatorChar))
-						&& newPath[0] == separatorChar) {
-					newPath[0] = newPath[newLength - 1];
-					newLength = 1;
-					// allow trailing slash after drive letter
-					uncIndex = 2;
-				}
-				newPath[newLength++] = pathChar;
-				foundSlash = false;
-			}
-		}
-		// remove trailing slash
-		if (foundSlash
-				&& (newLength > (uncIndex + 1) || (newLength == 2 && newPath[0] != separatorChar))) {
-			newLength--;
-		}
-		String tempPath = new String(newPath, 0, newLength);
-		// If it's the same keep it identical for SecurityManager purposes
-		if (!tempPath.equals(origPath)) {
-			return tempPath;
-		}
-		return origPath;
-	}
-
-	/**
-	 * Answers a boolean indicating whether or not the current context is allowed
-	 * to read this File.
-	 * 
-	 * @return <code>true</code> if this File can be read, <code>false</code>
-	 *         otherwise.
-	 * 
-	 * @see java.lang.SecurityManager#checkRead(FileDescriptor)
-	 */
-	public boolean canRead() {
-		SecurityManager security = System.getSecurityManager();
-		if (security != null)
-			security.checkRead(path);
-		return exists() && !isWriteOnlyImpl(properPath(true));
-	}
-
-	/**
-	 * Answers a boolean indicating whether or not the current context is
-	 * allowed to write to this File.
-	 * 
-	 * @return <code>true</code> if this File can be written,
-	 *         <code>false</code> otherwise.
-	 * 
-	 * @see java.lang.SecurityManager#checkWrite(FileDescriptor)
-	 */
-	public boolean canWrite() {
-		SecurityManager security = System.getSecurityManager();
-		if (security != null)
-			security.checkWrite(path);
-		
-		// Cannot use exists() since that does an unwanted read-check.
-		boolean exists = false;
-		if (path.length() > 0) {
-			exists = existsImpl(properPath(true));
-		}
-		return exists && !isReadOnlyImpl(properPath(true));
-	}
-
-	/**
-     * Answers the relative sort ordering of paths for the receiver and given
-     * argument. The ordering is platform dependent.
-     * 
-     * @param another
-     *            a File to compare the receiver to
-     * @return an int determined by comparing the two paths. The meaning is
-     *         described in the Comparable interface.
-     * @see Comparable
-     */
-    public int compareTo(File another) {
-        if (caseSensitive) {
-            return this.getPath().compareTo(another.getPath());
-        }
-        return this.getPath().compareToIgnoreCase(another.getPath());
-    }
-
-	/**
-	 * Deletes the file specified by this File. Directories must be empty before
-	 * they will be deleted.
-	 * 
-	 * @return <code>true</code> if this File was deleted, <code>false</code>
-	 *         otherwise.
-	 * 
-	 * @see java.lang.SecurityManager#checkDelete
-	 */
-	public boolean delete() {
-        SecurityManager security = System.getSecurityManager();
-        if (security != null) {
-            security.checkDelete(path);
-        }
-        byte[] propPath = properPath(true);
-        if ((path.length() != 0) && isDirectoryImpl(propPath)) {
-            return deleteDirImpl(propPath);
-        }
-        return deleteFileImpl(propPath);
-    }
-
-	private native boolean deleteDirImpl(byte[] filePath);
-
-	private native boolean deleteFileImpl(byte[] filePath);
-
-	/**
-	 * When the virtual machine terminates, any abstract files which have been
-	 * sent <code>deleteOnExit()</code> will be deleted. This will only happen
-	 * when the virtual machine terminates normally as described by the Java
-	 * Language Specification section 12.9.
-	 * 
-	 */
-	public void deleteOnExit() {
-		SecurityManager security = System.getSecurityManager();
-		if (security != null)
-			security.checkDelete(path);
-
-		org.apache.harmony.luni.util.DeleteOnExit.addFile(org.apache.harmony.luni.util.Util
-				.toString(properPath(true)));
-	}
-
-	/**
-	 * Compares the argument <code>obj</code> to the receiver, and answers
-	 * <code>true</code> if they represent the <em>same</em> object using a
-	 * path specific comparison.
-	 * 
-	 * @param obj
-	 *            the Object to compare with this Object
-	 * @return <code>true</code> if the object is the same as this object,
-	 *         <code>false</code> otherwise.
-	 */
-	public boolean equals(Object obj) {
-		if (!(obj instanceof File))
-			return false;
-		if (!caseSensitive) {
-			return path.equalsIgnoreCase(((File) obj).getPath());
-		}
-		return path.equals(((File) obj).getPath());
-	}
-
-	/**
-	 * Answers a boolean indicating whether or not this File can be found on the
-	 * underlying file system.
-	 * 
-	 * @return <code>true</code> if this File exists, <code>false</code>
-	 *         otherwise.
-	 * 
-	 * @see #getPath
-	 * @see java.lang.SecurityManager#checkRead(FileDescriptor)
-	 */
-	public boolean exists() {
-		if (path.length() == 0)
-			return false;
-		SecurityManager security = System.getSecurityManager();
-		if (security != null)
-			security.checkRead(path);
-		return existsImpl(properPath(true));
-	}
-
-	private native boolean existsImpl(byte[] filePath);
-
-	/**
-	 * Answers the absolute file path of this File.
-	 * 
-	 * @return the absolute file path
-	 * 
-	 * @see java.lang.SecurityManager#checkPropertyAccess
-	 */
-	public String getAbsolutePath() {
-		byte[] absolute = properPath(false);
-		return org.apache.harmony.luni.util.Util.toString(absolute);
-	}
-
-	/**
-	 * Answers a new File constructed using the absolute file path of this File.
-	 * 
-	 * @return a new File from this absolute file path
-	 * 
-	 * @see java.lang.SecurityManager#checkPropertyAccess
-	 */
-	public File getAbsoluteFile() {
-		return new File(this.getAbsolutePath());
-	}
-
-	/**
-	 * Answers the absolute file path of this File with all references resolved.
-	 * An <em>absolute</em> file path is one which begins at the root of the
-	 * file system. The canonical path is one in which all references have been
-	 * resolved. For the cases of '..' and '.' where the file system supports
-	 * parent and working directory respectively, these should be removed and
-	 * replaced with a direct directory reference. If the File does not exist,
-	 * getCanonicalPath() may not resolve any references and simply return an
-	 * absolute path name or throw an IOException.
-	 * 
-	 * @return the canonical file path
-	 * 
-	 * @throws IOException
-	 *             if an IO error occurs
-	 * 
-	 * @see java.lang.SecurityManager#checkPropertyAccess
-	 */
-	public String getCanonicalPath() throws IOException {
-		byte[] result = properPath(false);
-
-		boolean exists = false;
-		byte[] pathBytes = result;
-		do {
-			byte[] linkBytes = getLinkImpl(pathBytes);
-			if (linkBytes == pathBytes)
-				break;
-			if (linkBytes[0] == separatorChar) {
-				pathBytes = linkBytes;
-			} else {
-				int index = pathBytes.length - 1;
-				while (pathBytes[index] != separatorChar)
-					index--;
-				byte[] temp = new byte[index + 1 + linkBytes.length];
-				System.arraycopy(pathBytes, 0, temp, 0, index + 1);
-				System.arraycopy(linkBytes, 0, temp, index + 1,
-						linkBytes.length);
-				pathBytes = temp;
-			}
-			exists = existsImpl(pathBytes);
-		} while (exists);
-		if (exists)
-			result = pathBytes;
-
-		int numSeparators = 1;
-		for (int i = 0; i < result.length; i++)
-			if (result[i] == separatorChar)
-				numSeparators++;
-		int sepLocations[] = new int[numSeparators];
-		int rootLoc = 0;
-		if (separatorChar != '/')
-			if (result[0] == '\\')
-				rootLoc = (result.length > 1 && result[1] == '\\') ? 1 : 0;
-			else
-				rootLoc = 2; // skip drive i.e. c:
-		byte newResult[] = new byte[result.length + 1];
-		int newLength = 0, lastSlash = 0, foundDots = 0;
-		sepLocations[lastSlash] = rootLoc;
-		for (int i = 0; i <= result.length; i++) {
-			if (i < rootLoc)
-				newResult[newLength++] = result[i];
-			else {
-				if (i == result.length || result[i] == separatorChar) {
-					if (i == result.length && foundDots == 0)
-						break;
-					if (foundDots == 1) {
-						/* Don't write anything, just reset and continue */
-						foundDots = 0;
-						continue;
-					}
-					if (foundDots > 1) {
-						/* Go back N levels */
-						lastSlash = lastSlash > (foundDots - 1) ? lastSlash
-								- (foundDots - 1) : 0;
-						newLength = sepLocations[lastSlash] + 1;
-						foundDots = 0;
-						continue;
-					}
-					sepLocations[++lastSlash] = newLength;
-					newResult[newLength++] = (byte) separatorChar;
-					continue;
-				}
-				if (result[i] == '.') {
-					foundDots++;
-					continue;
-				}
-				/* Found some dots within text, write them out */
-				if (foundDots > 0)
-					for (int j = 0; j < foundDots; j++)
-						newResult[newLength++] = (byte) '.';
-				newResult[newLength++] = result[i];
-				foundDots = 0;
-			}
-		}
-		// remove trailing slash
-		if (newLength > (rootLoc + 1)
-				&& newResult[newLength - 1] == separatorChar)
-			newLength--;
-		newResult[newLength] = 0;
-		newResult = getCanonImpl(newResult);
-		newLength = newResult.length;
-		return org.apache.harmony.luni.util.Util.toString(newResult, 0, newLength);
-	}
-
-	/**
-	 * Answers a new File created using the canonical file path of this File.
-	 * Equivalent to <code>new File(this.getCanonicalPath())</code>.
-	 * 
-	 * @return the canonical file path
-	 * 
-	 * @throws IOException
-	 *             If an IO error occurs
-	 * 
-	 * @see java.lang.SecurityManager#checkPropertyAccess
-	 */
-	public File getCanonicalFile() throws IOException {
-		return new File(getCanonicalPath());
-	}
-
-	private native byte[] getCanonImpl(byte[] filePath);
-
-	/**
-	 * Answers the filename (not directory) of this File.
-	 * 
-	 * @return the filename or empty string
-	 */
-	public String getName() {
-		int separatorIndex = path.lastIndexOf(separator);
-		return (separatorIndex < 0) ? path : path.substring(separatorIndex + 1,
-				path.length());
-	}
-
-	/**
-	 * Answers the pathname of the parent of this File. This is the path up to
-	 * but not including the last name. <code>null</code> is returned when
-	 * there is no parent.
-	 * 
-	 * @return the parent name or <code>null</code>
-	 */
-	public String getParent() {
-		int length = path.length(), firstInPath = 0;
-		if (separatorChar == '\\' && length > 2 && path.charAt(1) == ':')
-			firstInPath = 2;
-		int index = path.lastIndexOf(separatorChar);
-		if (index == -1 && firstInPath > 0)
-			index = 2;
-		if (index == -1 || path.charAt(length - 1) == separatorChar)
-			return null;
-		if (path.indexOf(separatorChar) == index
-				&& path.charAt(firstInPath) == separatorChar)
-			return path.substring(0, index + 1);
-		return path.substring(0, index);
-	}
-
-	/**
-	 * Answers a new File made from the pathname of the parent of this File.
-	 * This is the path up to but not including the last name. <code>null</code>
-	 * is returned when there is no parent.
-	 * 
-	 * @return a new File representing parent or <code>null</code>
-	 */
-	public File getParentFile() {
-		String tempParent = getParent();
-		if (tempParent == null)
-			return null;
-		return new File(tempParent);
-	}
-
-	/**
-	 * Answers the file path of this File.
-	 * 
-	 * @return the file path
-	 */
-	public String getPath() {
-		return path;
-	}
-
-	/**
-	 * Answers an integer hash code for the receiver. Any two objects which
-	 * answer <code>true</code> when passed to <code>equals</code> must
-	 * answer the same value for this method.
-	 * 
-	 * @return the receiver's hash
-	 * 
-	 * @see #equals
-	 */
-	public int hashCode() {
-		if (caseSensitive)
-			return path.hashCode() ^ 1234321;
-		else
-			return path.toLowerCase().hashCode() ^ 1234321;
-	}
-
-	/**
-	 * Answers if this File is an absolute pathname. Whether a pathname is
-	 * absolute is platform specific. On UNIX it is if the path starts with the
-	 * character '/', on Windows it is absolute if either it starts with '\',
-	 * '/', '\\' (to represent a file server), or a letter followed by a colon.
-	 * 
-	 * @return <code>true</code> if this File is absolute, <code>false</code>
-	 *         otherwise.
-	 * 
-	 * @see #getPath
-	 */
-	public boolean isAbsolute() {
-		return isAbsoluteImpl(org.apache.harmony.luni.util.Util.getBytes(path));
-	}
-
-	private native boolean isAbsoluteImpl(byte[] filePath);
-
-	/**
-	 * Answers if this File represents a <em>directory</em> on the underlying
-	 * file system.
-	 * 
-	 * @return <code>true</code> if this File is a directory,
-	 *         <code>false</code> otherwise.
-	 * 
-	 * @see #getPath
-	 * @see java.lang.SecurityManager#checkRead(FileDescriptor)
-	 */
-	public boolean isDirectory() {
-		if (path.length() == 0)
-			return false;
-		SecurityManager security = System.getSecurityManager();
-		if (security != null)
-			security.checkRead(path);
-		return isDirectoryImpl(properPath(true));
-	}
-
-	private native boolean isDirectoryImpl(byte[] filePath);
-
-	/**
-	 * Answers if this File represents a <em>file</em> on the underlying file
-	 * system.
-	 * 
-	 * @return <code>true</code> if this File is a file, <code>false</code>
-	 *         otherwise.
-	 * 
-	 * @see #getPath
-	 * @see java.lang.SecurityManager#checkRead(FileDescriptor)
-	 */
-	public boolean isFile() {
-		if (path.length() == 0)
-			return false;
-		SecurityManager security = System.getSecurityManager();
-		if (security != null)
-			security.checkRead(path);
-		return isFileImpl(properPath(true));
-	}
-
-	private native boolean isFileImpl(byte[] filePath);
-
-	/**
-	 * Returns whether or not this file is a hidden file as defined by the
-	 * operating system.
-	 * 
-	 * @return <code>true</code> if the file is hidden, <code>false</code>
-	 *         otherwise.
-	 */
-	public boolean isHidden() {
-		if (path.length() == 0)
-			return false;
-		SecurityManager security = System.getSecurityManager();
-		if (security != null)
-			security.checkRead(path);
-		return isHiddenImpl(properPath(true));
-	}
-
-	private native boolean isHiddenImpl(byte[] filePath);
-
-	private native boolean isReadOnlyImpl(byte[] filePath);
-
-	private native boolean isWriteOnlyImpl(byte[] filePath);
-
-	private native byte[] getLinkImpl(byte[] filePath);
-
-	/**
-	 * Answers the time this File was last modified.
-	 * 
-	 * @return the time this File was last modified.
-	 * 
-	 * @see #getPath
-	 * @see java.lang.SecurityManager#checkRead(FileDescriptor)
-	 */
-	public long lastModified() {
-		SecurityManager security = System.getSecurityManager();
-		if (security != null)
-			security.checkRead(path);
-		long result = lastModifiedImpl(properPath(true));
-		/* Temporary code to handle both return cases until natives fixed */
-		if (result == -1 || result == 0)
-			return 0;
-		return (result * 1000);
-	}
-
-	private native long lastModifiedImpl(byte[] filePath);
-
-	/**
-	 * Sets the time this File was last modified.
-	 * 
-	 * @param time
-	 *            The time to set the file as last modified.
-	 * @return the time this File was last modified.
-	 * 
-	 * @see java.lang.SecurityManager#checkWrite(FileDescriptor)
-	 */
-	public boolean setLastModified(long time) {
-		if (time >= 0) {
-			SecurityManager security = System.getSecurityManager();
-			if (security != null)
-				security.checkWrite(path);
-			return (setLastModifiedImpl(properPath(true), time));
-		}
-		throw new IllegalArgumentException(org.apache.harmony.luni.util.Msg
-				.getString("K006a")); //$NON-NLS-1$
-	}
-
-	private native boolean setLastModifiedImpl(byte[] path, long time);
-
-	/**
-	 * Marks this file or directory to be read-only as defined by the operating
-	 * system.
-	 * 
-	 * @return <code>true</code> if the operation was a success,
-	 *         <code>false</code> otherwise
-	 */
-	public boolean setReadOnly() {
-		SecurityManager security = System.getSecurityManager();
-		if (security != null)
-			security.checkWrite(path);
-		return (setReadOnlyImpl(properPath(true)));
-	}
-
-	private native boolean setReadOnlyImpl(byte[] path);
-
-	/**
-	 * Answers the length of this File in bytes.
-	 * 
-	 * @return the number of bytes in the file.
-	 * 
-	 * @see #getPath
-	 * @see java.lang.SecurityManager#checkRead(FileDescriptor)
-	 */
-	public long length() {
-		SecurityManager security = System.getSecurityManager();
-		if (security != null)
-			security.checkRead(path);
-		return lengthImpl(properPath(true));
-	}
-
-	private native long lengthImpl(byte[] filePath);
-
-	/**
-	 * Answers an array of Strings representing the file names in the directory
-	 * represented by this File. If this File is not a directory the result is
-	 * <code>null</code>.
-	 * <p>
-	 * The entries <code>.</code> and <code>..</code> representing current
-	 * directory and parent directory are not returned as part of the list.
-	 * 
-	 * @return an array of Strings or <code>null</code>.
-	 * 
-	 * @see #getPath
-	 * @see #isDirectory
-	 * @see java.lang.SecurityManager#checkRead(FileDescriptor)
-	 */
-	public java.lang.String[] list() {
-		SecurityManager security = System.getSecurityManager();
-		if (security != null)
-			security.checkRead(path);
-		if (!isDirectory())
-			return null;
-		byte[][] implList = listImpl(properPath(true));
-		if (implList == null)
-			return new String[0];
-		String result[] = new String[implList.length];
-		for (int index = 0; index < implList.length; index++)
-			result[index] = org.apache.harmony.luni.util.Util.toString(implList[index]);
-		return result;
-	}
-
-	/**
-	 * Answers an array of Files representing the file names in the directory
-	 * represented by this File. If this File is not a directory the result is
-	 * <code>null</code>. The Files returned will be absolute if this File is
-	 * absolute, relative otherwise.
-	 * 
-	 * @return an array of Files or <code>null</code>.
-	 * 
-	 * @see #getPath
-	 * @see #list()
-	 * @see #isDirectory
-	 */
-	public File[] listFiles() {
-		String[] tempNames = list();
-		if (tempNames == null)
-			return null;
-		int resultLength = tempNames.length;
-		File results[] = new File[resultLength];
-		for (int i = 0; i < resultLength; i++)
-			results[i] = new File(this, tempNames[i]);
-		return results;
-	}
-
-	/**
-	 * Answers an array of Files representing the file names in the directory
-	 * represented by this File that match a specific filter. If this File is
-	 * not a directory the result is <code>null</code>. If the filter is
-	 * <code>null</code> then all filenames match.
-	 * <p>
-	 * The entries <code>.</code> and <code>..</code> representing current
-	 * directory and parent directory are not returned as part of the list.
-	 * 
-	 * @param filter
-	 *            the filter to match names to or <code>null</code>.
-	 * @return an array of Files or <code>null</code>.
-	 * 
-	 * @see #list(FilenameFilter filter)
-	 * @see #getPath
-	 * @see #isDirectory
-	 * @see java.lang.SecurityManager#checkRead(FileDescriptor)
-	 */
-	public File[] listFiles(FilenameFilter filter) {
-		String[] tempNames = list(filter);
-		if (tempNames == null)
-			return null;
-		int resultLength = tempNames.length;
-		File results[] = new File[resultLength];
-		for (int i = 0; i < resultLength; i++)
-			results[i] = new File(this, tempNames[i]);
-		return results;
-	}
-
-	/**
-	 * Answers an array of Files representing the file names in the directory
-	 * represented by this File that match a specific filter. If this File is
-	 * not a directory the result is <code>null</code>. If the filter is
-	 * <code>null</code> then all filenames match.
-	 * <p>
-	 * The entries <code>.</code> and <code>..</code> representing current
-	 * directory and parent directory are not returned as part of the list.
-	 * 
-	 * @param filter
-	 *            the filter to match names to or <code>null</code>.
-	 * @return an array of Files or <code>null</code>.
-	 * 
-	 * @see #getPath
-	 * @see #isDirectory
-	 * @see java.lang.SecurityManager#checkRead(FileDescriptor)
-	 */
-	public File[] listFiles(FileFilter filter) {
-		SecurityManager security = System.getSecurityManager();
-		if (security != null)
-			security.checkRead(path);
-		if (!isDirectory())
-			return null;
-		byte[][] implList = listImpl(properPath(true));
-		if (implList == null)
-			return new File[0];
-		java.util.Vector<File> tempResult = new java.util.Vector<File>();
-		for (int index = 0; index < implList.length; index++) {
-			String aName = org.apache.harmony.luni.util.Util.toString(implList[index]);
-			File aFile = new File(this, aName);
-			if (filter == null || filter.accept(aFile))
-				tempResult.addElement(aFile);
-		}
-		File[] result = new File[tempResult.size()];
-		tempResult.copyInto(result);
-		return result;
-	}
-
-	/**
-	 * Answers an array of Strings representing the file names in the directory
-	 * represented by this File that match a specific filter. If this File is
-	 * not a directory the result is <code>null</code>. If the filter is
-	 * <code>null</code> then all filenames match.
-	 * <p>
-	 * The entries <code>.</code> and <code>..</code> representing current
-	 * directory and parent directory are not returned as part of the list.
-	 * 
-	 * @param filter
-	 *            the filter to match names to or <code>null</code>.
-	 * @return an array of Strings or <code>null</code>.
-	 * 
-	 * @see #getPath
-	 * @see #isDirectory
-	 * @see java.lang.SecurityManager#checkRead(FileDescriptor)
-	 */
-	public java.lang.String[] list(FilenameFilter filter) {
-		SecurityManager security = System.getSecurityManager();
-		if (security != null)
-			security.checkRead(path);
-		if (!isDirectory())
-			return null;
-		byte[][] implList = listImpl(properPath(true));
-		if (implList == null)
-			return new String[0];
-		java.util.Vector<String> tempResult = new java.util.Vector<String>();
-		for (int index = 0; index < implList.length; index++) {
-			String aName = org.apache.harmony.luni.util.Util.toString(implList[index]);
-			if (filter == null || filter.accept(this, aName))
-				tempResult.addElement(aName);
-		}
-		String[] result = new String[tempResult.size()];
-		tempResult.copyInto(result);
-		return result;
-	}
-
-	private synchronized static native byte[][] listImpl(byte[] path);
-
-	/**
-	 * Creates the directory named by the trailing filename of this File. Not
-	 * all directories required to create this File are created.
-	 * 
-	 * @return <code>true</code> if the directory was created,
-	 *         <code>false</code> otherwise.
-	 * 
-	 * @see #getPath
-	 * @see java.lang.SecurityManager#checkWrite(FileDescriptor)
-	 */
-	public boolean mkdir() {
-		SecurityManager security = System.getSecurityManager();
-		if (security != null)
-			security.checkWrite(path);
-		return mkdirImpl(properPath(true));
-	}
-
-	private native boolean mkdirImpl(byte[] filePath);
-
-	/**
-	 * Create all the directories needed for this File. If the terminal
-	 * directory already exists, answer false. If the directories were created
-	 * successfully, answer <code>true</code>.
-	 * 
-	 * @return <code>true</code> if the necessary directories were created,
-	 *         <code>false</code> otherwise.
-	 * 
-	 */
-	public boolean mkdirs() {
-		/* If the terminal directory already exists, answer false */
-		if (exists())
-			return false;
-
-		/* If the receiver can be created, answer true */
-		if (mkdir())
-			return true;
-
-		String parentDir = getParent();
-		/* If there is no parent and we were not created, answer false */
-		if (parentDir == null)
-			return false;
-
-		/* Otherwise, try to create a parent directory and then this directory */
-		return (new File(parentDir).mkdirs() && mkdir());
-	}
-
-	/**
-	 * Creates the file specified by this File. If the file already exists this
-	 * method returns <code>false</code>. Otherwise, if the file is created
-	 * successfully, the result is <code>true</code>. An IOException will be
-	 * thrown if the directory to contain this file does not exist.
-	 * 
-	 * @return <code>true</code> if this File was created, <code>false</code>
-	 *         otherwise.
-	 * 
-	 * @throws IOException
-	 *             if an I/O error occurs or the directory does not exist.
-	 * 
-	 * @see java.lang.SecurityManager#checkWrite(FileDescriptor)
-	 */
-	public boolean createNewFile() throws IOException {
-		SecurityManager security = System.getSecurityManager();
-		if (security != null)
-			security.checkWrite(path);
-        if(0 == path.length()) {
-            throw new IOException(org.apache.harmony.luni.util.Msg.getString("KA012")); //$NON-NLS-1$
-        }
-		int result = newFileImpl(properPath(true));
-		switch (result) {
-		case 0:
-			return true;
-		case 1:
-		case 3:
-			return false;
-		default:
-			throw new IOException(org.apache.harmony.luni.util.Msg.getString("K01c2", path)); //$NON-NLS-1$
-		}
-	}
-
-	private native int newFileImpl(byte[] filePath);
-
-	/**
-	 * Creates an empty temporary file using the given prefix and suffix as part
-	 * of the file name. If suffix is null, <code>.tmp</code> is used.
-	 * 
-	 * @param prefix
-	 *            the prefix to the temp file name
-	 * @param suffix
-	 *            the suffix to the temp file name
-	 * @return the temporary file
-	 * 
-	 * @throws IOException
-	 *             If an error occurs when writing the file
-	 */
-	public static File createTempFile(String prefix, String suffix)
-			throws IOException {
-		return createTempFile(prefix, suffix, null);
-	}
-
-	/**
-	 * Creates an empty temporary file in the given directory using the given
-	 * prefix and suffix as part of the file name.
-	 * 
-	 * @param prefix
-	 *            the prefix to the temp file name
-	 * @param suffix
-	 *            the suffix to the temp file name
-	 * @param directory
-	 *            the location to which the temp file is to be written, or null
-	 *            for the default temp location
-	 * @return the temporary file
-	 * 
-	 * @throws IOException
-	 *             If an error occurs when writing the file
-	 */
-	public static File createTempFile(String prefix, String suffix,
-			File directory) throws IOException {
-		if (prefix != null) {
-			if (prefix.length() >= 3) {
-				String newSuffix = suffix == null ? ".tmp" : suffix; //$NON-NLS-1$
-				String tmpDir = "."; //$NON-NLS-1$
-				tmpDir = AccessController.doPrivileged(new PriviAction<String>("java.io.tmpdir", "."));   //$NON-NLS-1$//$NON-NLS-2$
-				File result, tmpDirFile = directory == null ? new File(tmpDir)
-						: directory;
-				do {
-					result = genTempFile(prefix, newSuffix, tmpDirFile);
-				} while (!result.createNewFile());
-				return result;
-			}
-			throw new IllegalArgumentException(org.apache.harmony.luni.util.Msg
-					.getString("K006b")); //$NON-NLS-1$
-		}
-		throw new NullPointerException();
-	}
-
-	private static File genTempFile(String prefix, String suffix, File directory) {
-		if (counter == 0) {
-			int newInt = new java.util.Random().nextInt();
-			counter = ((newInt / 65535) & 0xFFFF) + 0x2710;
-		}
-		StringBuilder newName = new StringBuilder();
-		newName.append(prefix);
-		newName.append(counter++);
-		newName.append(suffix);
-		return new File(directory, newName.toString());
-	}
-
-	/**
-	 * Answer a String representing the proper path for the receiver. If the
-	 * receiver is absolute do not prepend the user.dir property, otherwise do.
-	 * 
-	 * @param internal
-	 *            is user.dir internal
-	 * @return the proper path
-	 */
-	byte[] properPath(boolean internal) {
-		if (properPath != null)
-			return properPath;
-		byte[] pathBytes = org.apache.harmony.luni.util.Util.getBytes(path);
-		if (isAbsoluteImpl(pathBytes))
-			return properPath = pathBytes;
-		// Check security by getting user.dir when the path is not absolute
-		String userdir;
-		if (internal) {
-			userdir = AccessController.doPrivileged(new PriviAction<String>("user.dir")); //$NON-NLS-1$
-		} else
-			userdir = System.getProperty("user.dir"); //$NON-NLS-1$
-		if ((properPath = properPathImpl(pathBytes)) != null)
-			return properPath;
-		if (path.length() == 0)
-			return properPath = org.apache.harmony.luni.util.Util.getBytes(userdir);
-		int length = userdir.length();
-		if (path.charAt(0) == '\\') {
-			if (length > 1 && userdir.charAt(1) == ':') {
-				return properPath = org.apache.harmony.luni.util.Util.getBytes(userdir
-						.substring(0, 2)
-						+ path);
-			}
-			if (length > 0 && userdir.charAt(length - 1) == separatorChar) {
-				return properPath = org.apache.harmony.luni.util.Util.getBytes(userdir
-						+ path.substring(1));
-			}
-			return properPath = org.apache.harmony.luni.util.Util.getBytes(userdir + path);
-		}
-		if (length > 0 && userdir.charAt(length - 1) == separatorChar) {
-			return properPath = org.apache.harmony.luni.util.Util.getBytes(userdir + path);
-		}
-		return properPath = org.apache.harmony.luni.util.Util.getBytes(userdir + separator
-				+ path);
-	}
-
-	private static native byte[] properPathImpl(byte[] path);
-
-	/**
-	 * Renames this File to the name represented by the File <code>dest</code>.
-	 * This works for both normal files and directories.
-	 * 
-	 * @param dest
-	 *            the File containing the new name.
-	 * @return <code>true</code> if the File was renamed, <code>false</code>
-	 *         otherwise.
-	 * 
-	 * @see #getPath
-	 * @see java.lang.SecurityManager#checkRead(FileDescriptor)
-	 * @see java.lang.SecurityManager#checkWrite(FileDescriptor)
-	 */
-	public boolean renameTo(java.io.File dest) {
-		SecurityManager security = System.getSecurityManager();
-		if (security != null) {
-			security.checkWrite(path);
-			security.checkWrite(dest.path);
-		}
-		return renameToImpl(properPath(true), dest.properPath(true));
-	}
-
-	private native boolean renameToImpl(byte[] pathExist, byte[] pathNew);
-
-	/**
-	 * Answers a string containing a concise, human-readable description of the
-	 * receiver.
-	 * 
-	 * @return a printable representation for the receiver.
-	 */
-	public String toString() {
-		return path.toString();
-	}
-
-	/**
-	 * Answers a <code>file</code> URI for this File. The URI is System
-	 * dependent and may not be transferable between different operating/file
-	 * systems.
-	 * 
-	 * @return a <code>file</code> URI for this File.
-	 */
-	public URI toURI() {
-		String name = getAbsoluteName();
-		try {
-			if (!name.startsWith("/")) // On Windows, absolute paths might not //$NON-NLS-1$
-										// start with sep.
-				return new URI("file", null, //$NON-NLS-1$
-						new StringBuilder(name.length() + 1).append('/').append(
-								name).toString(), null, null);
-			else if (name.startsWith("//")) //$NON-NLS-1$
-				return new URI("file", name, null); // UNC path //$NON-NLS-1$
-			return new URI("file", null, name, null, null); //$NON-NLS-1$
-		} catch (URISyntaxException e) {
-			// this should never happen
-			return null;
-		}
-	}
-
-	/**
-	 * Answers a <code>file</code> URL for this File. The URL is System
-	 * dependent and may not be transferable between different operating/file
-	 * systems.
-	 * 
-	 * @return a <code>file</code> URL for this File.
-	 * 
-	 * @throws java.net.MalformedURLException
-	 *             if the path cannot be transformed into an URL
-	 */
-	public URL toURL() throws java.net.MalformedURLException {
-		String name = getAbsoluteName();
-		if (!name.startsWith("/")) // On Windows, absolute paths might not //$NON-NLS-1$
-									// start with sep.
-			return new URL("file", "", -1, new StringBuilder(name.length() + 1) //$NON-NLS-1$ //$NON-NLS-2$
-					.append('/').append(name).toString(), null);
-		else if (name.startsWith("//")) //$NON-NLS-1$
-			return new URL("file:" + name); // UNC path //$NON-NLS-1$
-		return new URL("file", "", -1, name, null); //$NON-NLS-1$ //$NON-NLS-2$
-	}
-
-	private String getAbsoluteName() {
-        String name = getAbsolutePath();
-        if (isDirectory() && name.charAt(name.length() - 1) != separatorChar) {
-            // Directories must end with a slash
-            name = new StringBuilder(name.length() + 1).append(name)
-                    .append('/').toString();
-        }
-        if (separatorChar != '/') { // Must convert slashes.
-            name = name.replace(separatorChar, '/');
-        }
-        return name;
-    }
-
-	private void writeObject(ObjectOutputStream stream) throws IOException {
-		stream.defaultWriteObject();
-		stream.writeChar(separatorChar);
-
-	}
-
-	private void readObject(ObjectInputStream stream) throws IOException,
-			ClassNotFoundException {
-		stream.defaultReadObject();
-		char inSeparator = stream.readChar();
-		path = path.replace(inSeparator, separatorChar);
-	}
-
-}
+/* Copyright 1998, 2006 The Apache Software Foundation or its licensors, as applicable
+ * 
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ * 
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package java.io;
+
+
+import java.net.URI;
+import java.net.URISyntaxException;
+import java.net.URL;
+import java.security.AccessController;
+
+import org.apache.harmony.luni.util.PriviAction;
+
+/**
+ * File is a class which represents a file name or directory. The file may be
+ * absolute relative to the root directory of the file system or relative to the
+ * current directory in which the program is running.
+ * <p>
+ * This class provides methods for querying/changing information about the file
+ * and also directory listing capabilities if the File represents a directory.
+ * <p>
+ * When manipulating file paths, the static fields of this class may be used to
+ * determine the platform specific separators.
+ * 
+ * @see java.io.Serializable
+ * @see java.lang.Comparable
+ */
+
+public class File implements Serializable, Comparable<File> {
+	private static final long serialVersionUID = 301077366599181567L;
+
+	private String path;
+
+	byte[] properPath;
+
+	/**
+	 * System dependent file separator character.
+	 */
+	public static final char separatorChar;
+
+	/**
+	 * System dependent file separator String. The initial value of this field
+	 * is the System property "file.separator".
+	 */
+	public static final String separator;
+
+	/**
+	 * System dependent path separator character.
+	 */
+	public static final char pathSeparatorChar;
+
+	/**
+	 * System dependent path separator String. The initial value of this field
+	 * is the System property "path.separator".
+	 */
+	public static final String pathSeparator;
+
+	/* Temp file counter needs java.util.Random from mJava */
+	private static int counter;
+
+	private static boolean caseSensitive;
+
+	private static native void oneTimeInitialization();
+
+	static {
+		oneTimeInitialization();
+
+		// The default protection domain grants access to these properties
+		separatorChar = System.getProperty("file.separator", "\\").charAt(0); //$NON-NLS-1$ //$NON-NLS-2$
+		pathSeparatorChar = System.getProperty("path.separator", ";").charAt(0);  //$NON-NLS-1$//$NON-NLS-2$
+		separator = new String(new char[] { separatorChar }, 0, 1);
+		pathSeparator = new String(new char[] { pathSeparatorChar }, 0, 1);
+		caseSensitive = isCaseSensitiveImpl();
+	}
+
+	/**
+	 * Constructs a new File using the specified directory and name.
+	 * 
+	 * @param dir
+	 *            the directory for the file name
+	 * @param name
+	 *            the file name to be contained in the dir
+	 */
+
+	public File(File dir, String name) {
+		if (name != null) {
+			if (dir == null) {
+				this.path = fixSlashes(name);
+			} else {
+				this.path = calculatePath(dir.getPath(),name);
+			}
+		} else
+			throw new NullPointerException();
+	}
+
+	/**
+	 * Constructs a new File using the specified path.
+	 * 
+	 * @param path
+	 *            the path to be used for the file
+	 */
+	public File(String path) {
+		// NullPointerException thrown by fixSlashes
+		this.path = fixSlashes(path);
+	}
+
+	/**
+	 * Constructs a new File using the specified directory and name placing a
+	 * path separator between the two.
+	 * 
+	 * @param dirPath
+	 *            the directory for the file name
+	 * @param name
+	 *            the file name to be contained in the dir
+	 */
+	public File(String dirPath, String name) {
+		if (name != null) {
+			if (dirPath == null) {
+				this.path = fixSlashes(name);
+			} else {
+				this.path = calculatePath(dirPath, name);
+			}
+		} else
+			throw new NullPointerException();
+	}
+
+	/**
+	 * Constructs a new File using the path of the specified URI
+	 * 
+	 * <code>uri</code> needs to be an absolute and hierarchical
+	 * <code>URI </code> with file scheme, and non-empty path component, but
+	 * with undefined authority, query or fragment components.
+	 * 
+	 * @param uri
+	 *            the URI instance which will be used to construct this file
+	 * 
+	 * @throws IllegalArgumentException
+	 *             if <code>uri</code> does not comply with the conditions
+	 *             above.
+	 * 
+	 * @see #toURI
+	 * @see java.net.URI
+	 */
+	public File(URI uri) {
+		// check pre-conditions
+		checkURI(uri);
+		this.path = fixSlashes(uri.getPath());
+	}
+
+	private String calculatePath(String dirPath, String name) {
+		// Remove all the proceeding separator chars from name
+		name = fixSlashes(name);
+		while (name.length() > 0 && (name.charAt(0) == separatorChar))
+			name = name.substring(1, name.length());
+
+		// Ensure there is a separator char between dirPath and name
+		dirPath = fixSlashes(dirPath);
+		if (dirPath.length() > 0 && (dirPath.charAt(dirPath.length() - 1) == separatorChar)) {
+			return dirPath + name;
+		}
+
+		return dirPath + separatorChar + name;
+	}
+
+	private void checkURI(URI uri) {
+		if (!uri.isAbsolute()) {
+			throw new IllegalArgumentException(org.apache.harmony.luni.util.Msg.getString(
+					"K031a", uri)); //$NON-NLS-1$
+		} else if (!uri.getRawSchemeSpecificPart().startsWith("/")) { //$NON-NLS-1$
+			throw new IllegalArgumentException(org.apache.harmony.luni.util.Msg.getString(
+					"K031b", uri)); //$NON-NLS-1$
+		}
+
+		String temp = uri.getScheme();
+		if (temp == null || !temp.equals("file")) { //$NON-NLS-1$
+			throw new IllegalArgumentException(org.apache.harmony.luni.util.Msg.getString(
+					"K031c", uri)); //$NON-NLS-1$
+		}
+
+		temp = uri.getRawPath();
+		if (temp == null || temp.length() == 0) {
+			throw new IllegalArgumentException(org.apache.harmony.luni.util.Msg.getString(
+					"K031d", uri)); //$NON-NLS-1$
+		}
+
+		if (uri.getRawAuthority() != null) {
+			throw new IllegalArgumentException(org.apache.harmony.luni.util.Msg.getString(
+					"K031e", new String[] { "authority", uri.toString() })); //$NON-NLS-1$ //$NON-NLS-2$
+		}
+
+		if (uri.getRawQuery() != null)
+			throw new IllegalArgumentException(org.apache.harmony.luni.util.Msg.getString(
+					"K031e", new String[] { "query", uri.toString() }));  //$NON-NLS-1$//$NON-NLS-2$
+
+		if (uri.getRawFragment() != null)
+			throw new IllegalArgumentException(org.apache.harmony.luni.util.Msg.getString(
+					"K031e", new String[] { "fragment", uri.toString() })); //$NON-NLS-1$ //$NON-NLS-2$
+	}
+
+	private static native byte[][] rootsImpl();
+
+	private static native boolean isCaseSensitiveImpl();
+
+	/**
+	 * Lists the filesystem roots.
+	 * 
+	 * The Java platform may support zero or more filesystems, each with its own
+	 * platform-dependent root. Further, the canonical pathname of any file on
+	 * the system will always begin with one of the returned filesystem roots.
+	 * 
+	 * @return the array of filesystem roots
+	 */
+	public static File[] listRoots() {
+		byte[][] rootsList = rootsImpl();
+		if (rootsList == null)
+			return new File[0];
+		File result[] = new File[rootsList.length];
+		for (int i = 0; i < rootsList.length; i++)
+			result[i] = new File(org.apache.harmony.luni.util.Util.toString(rootsList[i]));
+		return result;
+	}
+
+	/**
+	 * The purpose of this method is to take a path and fix the slashes up. This
+	 * includes changing them all to the current platforms fileSeparator and
+	 * removing duplicates.
+	 */
+	private String fixSlashes(String origPath) {
+		int uncIndex = 1;
+		int length = origPath.length(), newLength = 0;
+		if (separatorChar == '/') // disable UNC names
+			uncIndex = 0;
+		else if (length > 2 && origPath.charAt(1) == ':')
+			uncIndex = 2;
+
+		boolean foundSlash = false;
+		char newPath[] = origPath.toCharArray();
+		for (int i = 0; i < length; i++) {
+			char pathChar = newPath[i];
+			if (pathChar == '\\' || pathChar == '/') {
+				/* UNC Name requires 2 leading slashes */
+				if ((foundSlash && i == uncIndex) || !foundSlash) {
+					newPath[newLength++] = separatorChar;
+					foundSlash = true;
+				}
+			} else {
+				// check for leading slashes before a drive
+				if (pathChar == ':'
+						&& uncIndex > 0
+						&& (newLength == 2 || (newLength == 3 && newPath[1] == separatorChar))
+						&& newPath[0] == separatorChar) {
+					newPath[0] = newPath[newLength - 1];
+					newLength = 1;
+					// allow trailing slash after drive letter
+					uncIndex = 2;
+				}
+				newPath[newLength++] = pathChar;
+				foundSlash = false;
+			}
+		}
+		// remove trailing slash
+		if (foundSlash
+				&& (newLength > (uncIndex + 1) || (newLength == 2 && newPath[0] != separatorChar))) {
+			newLength--;
+		}
+		String tempPath = new String(newPath, 0, newLength);
+		// If it's the same keep it identical for SecurityManager purposes
+		if (!tempPath.equals(origPath)) {
+			return tempPath;
+		}
+		return origPath;
+	}
+
+	/**
+	 * Answers a boolean indicating whether or not the current context is allowed
+	 * to read this File.
+	 * 
+	 * @return <code>true</code> if this File can be read, <code>false</code>
+	 *         otherwise.
+	 * 
+	 * @see java.lang.SecurityManager#checkRead(FileDescriptor)
+	 */
+	public boolean canRead() {
+		SecurityManager security = System.getSecurityManager();
+		if (security != null)
+			security.checkRead(path);
+		return exists() && !isWriteOnlyImpl(properPath(true));
+	}
+
+	/**
+	 * Answers a boolean indicating whether or not the current context is
+	 * allowed to write to this File.
+	 * 
+	 * @return <code>true</code> if this File can be written,
+	 *         <code>false</code> otherwise.
+	 * 
+	 * @see java.lang.SecurityManager#checkWrite(FileDescriptor)
+	 */
+	public boolean canWrite() {
+		SecurityManager security = System.getSecurityManager();
+		if (security != null)
+			security.checkWrite(path);
+		
+		// Cannot use exists() since that does an unwanted read-check.
+		boolean exists = false;
+		if (path.length() > 0) {
+			exists = existsImpl(properPath(true));
+		}
+		return exists && !isReadOnlyImpl(properPath(true));
+	}
+
+	/**
+     * Answers the relative sort ordering of paths for the receiver and given
+     * argument. The ordering is platform dependent.
+     * 
+     * @param another
+     *            a File to compare the receiver to
+     * @return an int determined by comparing the two paths. The meaning is
+     *         described in the Comparable interface.
+     * @see Comparable
+     */
+    public int compareTo(File another) {
+        if (caseSensitive) {
+            return this.getPath().compareTo(another.getPath());
+        }
+        return this.getPath().compareToIgnoreCase(another.getPath());
+    }
+
+	/**
+	 * Deletes the file specified by this File. Directories must be empty before
+	 * they will be deleted.
+	 * 
+	 * @return <code>true</code> if this File was deleted, <code>false</code>
+	 *         otherwise.
+	 * 
+	 * @see java.lang.SecurityManager#checkDelete
+	 */
+	public boolean delete() {
+        SecurityManager security = System.getSecurityManager();
+        if (security != null) {
+            security.checkDelete(path);
+        }
+        byte[] propPath = properPath(true);
+        if ((path.length() != 0) && isDirectoryImpl(propPath)) {
+            return deleteDirImpl(propPath);
+        }
+        return deleteFileImpl(propPath);
+    }
+
+	private native boolean deleteDirImpl(byte[] filePath);
+
+	private native boolean deleteFileImpl(byte[] filePath);
+
+	/**
+	 * When the virtual machine terminates, any abstract files which have been
+	 * sent <code>deleteOnExit()</code> will be deleted. This will only happen
+	 * when the virtual machine terminates normally as described by the Java
+	 * Language Specification section 12.9.
+	 * 
+	 */
+	public void deleteOnExit() {
+		SecurityManager security = System.getSecurityManager();
+		if (security != null)
+			security.checkDelete(path);
+
+		org.apache.harmony.luni.util.DeleteOnExit.addFile(org.apache.harmony.luni.util.Util
+				.toString(properPath(true)));
+	}
+
+	/**
+	 * Compares the argument <code>obj</code> to the receiver, and answers
+	 * <code>true</code> if they represent the <em>same</em> object using a
+	 * path specific comparison.
+	 * 
+	 * @param obj
+	 *            the Object to compare with this Object
+	 * @return <code>true</code> if the object is the same as this object,
+	 *         <code>false</code> otherwise.
+	 */
+	public boolean equals(Object obj) {
+		if (!(obj instanceof File))
+			return false;
+		if (!caseSensitive) {
+			return path.equalsIgnoreCase(((File) obj).getPath());
+		}
+		return path.equals(((File) obj).getPath());
+	}
+
+	/**
+	 * Answers a boolean indicating whether or not this File can be found on the
+	 * underlying file system.
+	 * 
+	 * @return <code>true</code> if this File exists, <code>false</code>
+	 *         otherwise.
+	 * 
+	 * @see #getPath
+	 * @see java.lang.SecurityManager#checkRead(FileDescriptor)
+	 */
+	public boolean exists() {
+		if (path.length() == 0)
+			return false;
+		SecurityManager security = System.getSecurityManager();
+		if (security != null)
+			security.checkRead(path);
+		return existsImpl(properPath(true));
+	}
+
+	private native boolean existsImpl(byte[] filePath);
+
+	/**
+	 * Answers the absolute file path of this File.
+	 * 
+	 * @return the absolute file path
+	 * 
+	 * @see java.lang.SecurityManager#checkPropertyAccess
+	 */
+	public String getAbsolutePath() {
+		byte[] absolute = properPath(false);
+		return org.apache.harmony.luni.util.Util.toString(absolute);
+	}
+
+	/**
+	 * Answers a new File constructed using the absolute file path of this File.
+	 * 
+	 * @return a new File from this absolute file path
+	 * 
+	 * @see java.lang.SecurityManager#checkPropertyAccess
+	 */
+	public File getAbsoluteFile() {
+		return new File(this.getAbsolutePath());
+	}
+
+	/**
+	 * Answers the absolute file path of this File with all references resolved.
+	 * An <em>absolute</em> file path is one which begins at the root of the
+	 * file system. The canonical path is one in which all references have been
+	 * resolved. For the cases of '..' and '.' where the file system supports
+	 * parent and working directory respectively, these should be removed and
+	 * replaced with a direct directory reference. If the File does not exist,
+	 * getCanonicalPath() may not resolve any references and simply return an
+	 * absolute path name or throw an IOException.
+	 * 
+	 * @return the canonical file path
+	 * 
+	 * @throws IOException
+	 *             if an IO error occurs
+	 * 
+	 * @see java.lang.SecurityManager#checkPropertyAccess
+	 */
+	public String getCanonicalPath() throws IOException {
+		byte[] result = properPath(false);
+
+		boolean exists = false;
+		byte[] pathBytes = result;
+		do {
+			byte[] linkBytes = getLinkImpl(pathBytes);
+			if (linkBytes == pathBytes)
+				break;
+			if (linkBytes[0] == separatorChar) {
+				pathBytes = linkBytes;
+			} else {
+				int index = pathBytes.length - 1;
+				while (pathBytes[index] != separatorChar)
+					index--;
+				byte[] temp = new byte[index + 1 + linkBytes.length];
+				System.arraycopy(pathBytes, 0, temp, 0, index + 1);
+				System.arraycopy(linkBytes, 0, temp, index + 1,
+						linkBytes.length);
+				pathBytes = temp;
+			}
+			exists = existsImpl(pathBytes);
+		} while (exists);
+		if (exists)
+			result = pathBytes;
+
+		int numSeparators = 1;
+		for (int i = 0; i < result.length; i++)
+			if (result[i] == separatorChar)
+				numSeparators++;
+		int sepLocations[] = new int[numSeparators];
+		int rootLoc = 0;
+		if (separatorChar != '/')
+			if (result[0] == '\\')
+				rootLoc = (result.length > 1 && result[1] == '\\') ? 1 : 0;
+			else
+				rootLoc = 2; // skip drive i.e. c:
+		byte newResult[] = new byte[result.length + 1];
+		int newLength = 0, lastSlash = 0, foundDots = 0;
+		sepLocations[lastSlash] = rootLoc;
+		for (int i = 0; i <= result.length; i++) {
+			if (i < rootLoc)
+				newResult[newLength++] = result[i];
+			else {
+				if (i == result.length || result[i] == separatorChar) {
+					if (i == result.length && foundDots == 0)
+						break;
+					if (foundDots == 1) {
+						/* Don't write anything, just reset and continue */
+						foundDots = 0;
+						continue;
+					}
+					if (foundDots > 1) {
+						/* Go back N levels */
+						lastSlash = lastSlash > (foundDots - 1) ? lastSlash
+								- (foundDots - 1) : 0;
+						newLength = sepLocations[lastSlash] + 1;
+						foundDots = 0;
+						continue;
+					}
+					sepLocations[++lastSlash] = newLength;
+					newResult[newLength++] = (byte) separatorChar;
+					continue;
+				}
+				if (result[i] == '.') {
+					foundDots++;
+					continue;
+				}
+				/* Found some dots within text, write them out */
+				if (foundDots > 0)
+					for (int j = 0; j < foundDots; j++)
+						newResult[newLength++] = (byte) '.';
+				newResult[newLength++] = result[i];
+				foundDots = 0;
+			}
+		}
+		// remove trailing slash
+		if (newLength > (rootLoc + 1)
+				&& newResult[newLength - 1] == separatorChar)
+			newLength--;
+		newResult[newLength] = 0;
+		newResult = getCanonImpl(newResult);
+		newLength = newResult.length;
+		return org.apache.harmony.luni.util.Util.toString(newResult, 0, newLength);
+	}
+
+	/**
+	 * Answers a new File created using the canonical file path of this File.
+	 * Equivalent to <code>new File(this.getCanonicalPath())</code>.
+	 * 
+	 * @return the canonical file path
+	 * 
+	 * @throws IOException
+	 *             If an IO error occurs
+	 * 
+	 * @see java.lang.SecurityManager#checkPropertyAccess
+	 */
+	public File getCanonicalFile() throws IOException {
+		return new File(getCanonicalPath());
+	}
+
+	private native byte[] getCanonImpl(byte[] filePath);
+
+	/**
+	 * Answers the filename (not directory) of this File.
+	 * 
+	 * @return the filename or empty string
+	 */
+	public String getName() {
+		int separatorIndex = path.lastIndexOf(separator);
+		return (separatorIndex < 0) ? path : path.substring(separatorIndex + 1,
+				path.length());
+	}
+
+	/**
+	 * Answers the pathname of the parent of this File. This is the path up to
+	 * but not including the last name. <code>null</code> is returned when
+	 * there is no parent.
+	 * 
+	 * @return the parent name or <code>null</code>
+	 */
+	public String getParent() {
+		int length = path.length(), firstInPath = 0;
+		if (separatorChar == '\\' && length > 2 && path.charAt(1) == ':')
+			firstInPath = 2;
+		int index = path.lastIndexOf(separatorChar);
+		if (index == -1 && firstInPath > 0)
+			index = 2;
+		if (index == -1 || path.charAt(length - 1) == separatorChar)
+			return null;
+		if (path.indexOf(separatorChar) == index
+				&& path.charAt(firstInPath) == separatorChar)
+			return path.substring(0, index + 1);
+		return path.substring(0, index);
+	}
+
+	/**
+	 * Answers a new File made from the pathname of the parent of this File.
+	 * This is the path up to but not including the last name. <code>null</code>
+	 * is returned when there is no parent.
+	 * 
+	 * @return a new File representing parent or <code>null</code>
+	 */
+	public File getParentFile() {
+		String tempParent = getParent();
+		if (tempParent == null)
+			return null;
+		return new File(tempParent);
+	}
+
+	/**
+	 * Answers the file path of this File.
+	 * 
+	 * @return the file path
+	 */
+	public String getPath() {
+		return path;
+	}
+
+	/**
+	 * Answers an integer hash code for the receiver. Any two objects which
+	 * answer <code>true</code> when passed to <code>equals</code> must
+	 * answer the same value for this method.
+	 * 
+	 * @return the receiver's hash
+	 * 
+	 * @see #equals
+	 */
+	public int hashCode() {
+		if (caseSensitive)
+			return path.hashCode() ^ 1234321;
+		else
+			return path.toLowerCase().hashCode() ^ 1234321;
+	}
+
+	/**
+	 * Answers if this File is an absolute pathname. Whether a pathname is
+	 * absolute is platform specific. On UNIX it is if the path starts with the
+	 * character '/', on Windows it is absolute if either it starts with '\',
+	 * '/', '\\' (to represent a file server), or a letter followed by a colon.
+	 * 
+	 * @return <code>true</code> if this File is absolute, <code>false</code>
+	 *         otherwise.
+	 * 
+	 * @see #getPath
+	 */
+	public boolean isAbsolute() {
+		return isAbsoluteImpl(org.apache.harmony.luni.util.Util.getBytes(path));
+	}
+
+	private native boolean isAbsoluteImpl(byte[] filePath);
+
+	/**
+	 * Answers if this File represents a <em>directory</em> on the underlying
+	 * file system.
+	 * 
+	 * @return <code>true</code> if this File is a directory,
+	 *         <code>false</code> otherwise.
+	 * 
+	 * @see #getPath
+	 * @see java.lang.SecurityManager#checkRead(FileDescriptor)
+	 */
+	public boolean isDirectory() {
+		if (path.length() == 0)
+			return false;
+		SecurityManager security = System.getSecurityManager();
+		if (security != null)
+			security.checkRead(path);
+		return isDirectoryImpl(properPath(true));
+	}
+
+	private native boolean isDirectoryImpl(byte[] filePath);
+
+	/**
+	 * Answers if this File represents a <em>file</em> on the underlying file
+	 * system.
+	 * 
+	 * @return <code>true</code> if this File is a file, <code>false</code>
+	 *         otherwise.
+	 * 
+	 * @see #getPath
+	 * @see java.lang.SecurityManager#checkRead(FileDescriptor)
+	 */
+	public boolean isFile() {
+		if (path.length() == 0)
+			return false;
+		SecurityManager security = System.getSecurityManager();
+		if (security != null)
+			security.checkRead(path);
+		return isFileImpl(properPath(true));
+	}
+
+	private native boolean isFileImpl(byte[] filePath);
+
+	/**
+	 * Returns whether or not this file is a hidden file as defined by the
+	 * operating system.
+	 * 
+	 * @return <code>true</code> if the file is hidden, <code>false</code>
+	 *         otherwise.
+	 */
+	public boolean isHidden() {
+		if (path.length() == 0)
+			return false;
+		SecurityManager security = System.getSecurityManager();
+		if (security != null)
+			security.checkRead(path);
+		return isHiddenImpl(properPath(true));
+	}
+
+	private native boolean isHiddenImpl(byte[] filePath);
+
+	private native boolean isReadOnlyImpl(byte[] filePath);
+
+	private native boolean isWriteOnlyImpl(byte[] filePath);
+
+	private native byte[] getLinkImpl(byte[] filePath);
+
+	/**
+	 * Answers the time this File was last modified.
+	 * 
+	 * @return the time this File was last modified.
+	 * 
+	 * @see #getPath
+	 * @see java.lang.SecurityManager#checkRead(FileDescriptor)
+	 */
+	public long lastModified() {
+		SecurityManager security = System.getSecurityManager();
+		if (security != null)
+			security.checkRead(path);
+		long result = lastModifiedImpl(properPath(true));
+		/* Temporary code to handle both return cases until natives fixed */
+		if (result == -1 || result == 0)
+			return 0;
+		return (result * 1000);
+	}
+
+	private native long lastModifiedImpl(byte[] filePath);
+
+	/**
+	 * Sets the time this File was last modified.
+	 * 
+	 * @param time
+	 *            The time to set the file as last modified.
+	 * @return the time this File was last modified.
+	 * 
+	 * @see java.lang.SecurityManager#checkWrite(FileDescriptor)
+	 */
+	public boolean setLastModified(long time) {
+		if (time >= 0) {
+			SecurityManager security = System.getSecurityManager();
+			if (security != null)
+				security.checkWrite(path);
+			return (setLastModifiedImpl(properPath(true), time));
+		}
+		throw new IllegalArgumentException(org.apache.harmony.luni.util.Msg
+				.getString("K006a")); //$NON-NLS-1$
+	}
+
+	private native boolean setLastModifiedImpl(byte[] path, long time);
+
+	/**
+	 * Marks this file or directory to be read-only as defined by the operating
+	 * system.
+	 * 
+	 * @return <code>true</code> if the operation was a success,
+	 *         <code>false</code> otherwise
+	 */
+	public boolean setReadOnly() {
+		SecurityManager security = System.getSecurityManager();
+		if (security != null)
+			security.checkWrite(path);
+		return (setReadOnlyImpl(properPath(true)));
+	}
+
+	private native boolean setReadOnlyImpl(byte[] path);
+
+	/**
+	 * Answers the length of this File in bytes.
+	 * 
+	 * @return the number of bytes in the file.
+	 * 
+	 * @see #getPath
+	 * @see java.lang.SecurityManager#checkRead(FileDescriptor)
+	 */
+	public long length() {
+		SecurityManager security = System.getSecurityManager();
+		if (security != null)
+			security.checkRead(path);
+		return lengthImpl(properPath(true));
+	}
+
+	private native long lengthImpl(byte[] filePath);
+
+	/**
+	 * Answers an array of Strings representing the file names in the directory
+	 * represented by this File. If this File is not a directory the result is
+	 * <code>null</code>.
+	 * <p>
+	 * The entries <code>.</code> and <code>..</code> representing current
+	 * directory and parent directory are not returned as part of the list.
+	 * 
+	 * @return an array of Strings or <code>null</code>.
+	 * 
+	 * @see #getPath
+	 * @see #isDirectory
+	 * @see java.lang.SecurityManager#checkRead(FileDescriptor)
+	 */
+	public java.lang.String[] list() {
+		SecurityManager security = System.getSecurityManager();
+		if (security != null)
+			security.checkRead(path);
+		if (!isDirectory())
+			return null;
+		byte[][] implList = listImpl(properPath(true));
+		if (implList == null)
+			return new String[0];
+		String result[] = new String[implList.length];
+		for (int index = 0; index < implList.length; index++)
+			result[index] = org.apache.harmony.luni.util.Util.toString(implList[index]);
+		return result;
+	}
+
+	/**
+	 * Answers an array of Files representing the file names in the directory
+	 * represented by this File. If this File is not a directory the result is
+	 * <code>null</code>. The Files returned will be absolute if this File is
+	 * absolute, relative otherwise.
+	 * 
+	 * @return an array of Files or <code>null</code>.
+	 * 
+	 * @see #getPath
+	 * @see #list()
+	 * @see #isDirectory
+	 */
+	public File[] listFiles() {
+		String[] tempNames = list();
+		if (tempNames == null)
+			return null;
+		int resultLength = tempNames.length;
+		File results[] = new File[resultLength];
+		for (int i = 0; i < resultLength; i++)
+			results[i] = new File(this, tempNames[i]);
+		return results;
+	}
+
+	/**
+	 * Answers an array of Files representing the file names in the directory
+	 * represented by this File that match a specific filter. If this File is
+	 * not a directory the result is <code>null</code>. If the filter is
+	 * <code>null</code> then all filenames match.
+	 * <p>
+	 * The entries <code>.</code> and <code>..</code> representing current
+	 * directory and parent directory are not returned as part of the list.
+	 * 
+	 * @param filter
+	 *            the filter to match names to or <code>null</code>.
+	 * @return an array of Files or <code>null</code>.
+	 * 
+	 * @see #list(FilenameFilter filter)
+	 * @see #getPath
+	 * @see #isDirectory
+	 * @see java.lang.SecurityManager#checkRead(FileDescriptor)
+	 */
+	public File[] listFiles(FilenameFilter filter) {
+		String[] tempNames = list(filter);
+		if (tempNames == null)
+			return null;
+		int resultLength = tempNames.length;
+		File results[] = new File[resultLength];
+		for (int i = 0; i < resultLength; i++)
+			results[i] = new File(this, tempNames[i]);
+		return results;
+	}
+
+	/**
+	 * Answers an array of Files representing the file names in the directory
+	 * represented by this File that match a specific filter. If this File is
+	 * not a directory the result is <code>null</code>. If the filter is
+	 * <code>null</code> then all filenames match.
+	 * <p>
+	 * The entries <code>.</code> and <code>..</code> representing current
+	 * directory and parent directory are not returned as part of the list.
+	 * 
+	 * @param filter
+	 *            the filter to match names to or <code>null</code>.
+	 * @return an array of Files or <code>null</code>.
+	 * 
+	 * @see #getPath
+	 * @see #isDirectory
+	 * @see java.lang.SecurityManager#checkRead(FileDescriptor)
+	 */
+	public File[] listFiles(FileFilter filter) {
+		SecurityManager security = System.getSecurityManager();
+		if (security != null)
+			security.checkRead(path);
+		if (!isDirectory())
+			return null;
+		byte[][] implList = listImpl(properPath(true));
+		if (implList == null)
+			return new File[0];
+		java.util.Vector<File> tempResult = new java.util.Vector<File>();
+		for (int index = 0; index < implList.length; index++) {
+			String aName = org.apache.harmony.luni.util.Util.toString(implList[index]);
+			File aFile = new File(this, aName);
+			if (filter == null || filter.accept(aFile))
+				tempResult.addElement(aFile);
+		}
+		File[] result = new File[tempResult.size()];
+		tempResult.copyInto(result);
+		return result;
+	}
+
+	/**
+	 * Answers an array of Strings representing the file names in the directory
+	 * represented by this File that match a specific filter. If this File is
+	 * not a directory the result is <code>null</code>. If the filter is
+	 * <code>null</code> then all filenames match.
+	 * <p>
+	 * The entries <code>.</code> and <code>..</code> representing current
+	 * directory and parent directory are not returned as part of the list.
+	 * 
+	 * @param filter
+	 *            the filter to match names to or <code>null</code>.
+	 * @return an array of Strings or <code>null</code>.
+	 * 
+	 * @see #getPath
+	 * @see #isDirectory
+	 * @see java.lang.SecurityManager#checkRead(FileDescriptor)
+	 */
+	public java.lang.String[] list(FilenameFilter filter) {
+		SecurityManager security = System.getSecurityManager();
+		if (security != null)
+			security.checkRead(path);
+		if (!isDirectory())
+			return null;
+		byte[][] implList = listImpl(properPath(true));
+		if (implList == null)
+			return new String[0];
+		java.util.Vector<String> tempResult = new java.util.Vector<String>();
+		for (int index = 0; index < implList.length; index++) {
+			String aName = org.apache.harmony.luni.util.Util.toString(implList[index]);
+			if (filter == null || filter.accept(this, aName))
+				tempResult.addElement(aName);
+		}
+		String[] result = new String[tempResult.size()];
+		tempResult.copyInto(result);
+		return result;
+	}
+
+	private synchronized static native byte[][] listImpl(byte[] path);
+
+	/**
+	 * Creates the directory named by the trailing filename of this File. Not
+	 * all directories required to create this File are created.
+	 * 
+	 * @return <code>true</code> if the directory was created,
+	 *         <code>false</code> otherwise.
+	 * 
+	 * @see #getPath
+	 * @see java.lang.SecurityManager#checkWrite(FileDescriptor)
+	 */
+	public boolean mkdir() {
+		SecurityManager security = System.getSecurityManager();
+		if (security != null)
+			security.checkWrite(path);
+		return mkdirImpl(properPath(true));
+	}
+
+	private native boolean mkdirImpl(byte[] filePath);
+
+	/**
+	 * Create all the directories needed for this File. If the terminal
+	 * directory already exists, answer false. If the directories were created
+	 * successfully, answer <code>true</code>.
+	 * 
+	 * @return <code>true</code> if the necessary directories were created,
+	 *         <code>false</code> otherwise.
+	 * 
+	 */
+	public boolean mkdirs() {
+		/* If the terminal directory already exists, answer false */
+		if (exists())
+			return false;
+
+		/* If the receiver can be created, answer true */
+		if (mkdir())
+			return true;
+
+		String parentDir = getParent();
+		/* If there is no parent and we were not created, answer false */
+		if (parentDir == null)
+			return false;
+
+		/* Otherwise, try to create a parent directory and then this directory */
+		return (new File(parentDir).mkdirs() && mkdir());
+	}
+
+	/**
+	 * Creates the file specified by this File. If the file already exists this
+	 * method returns <code>false</code>. Otherwise, if the file is created
+	 * successfully, the result is <code>true</code>. An IOException will be
+	 * thrown if the directory to contain this file does not exist.
+	 * 
+	 * @return <code>true</code> if this File was created, <code>false</code>
+	 *         otherwise.
+	 * 
+	 * @throws IOException
+	 *             if an I/O error occurs or the directory does not exist.
+	 * 
+	 * @see java.lang.SecurityManager#checkWrite(FileDescriptor)
+	 */
+	public boolean createNewFile() throws IOException {
+		SecurityManager security = System.getSecurityManager();
+		if (security != null)
+			security.checkWrite(path);
+        if(0 == path.length()) {
+            throw new IOException(org.apache.harmony.luni.util.Msg.getString("KA012")); //$NON-NLS-1$
+        }
+		int result = newFileImpl(properPath(true));
+		switch (result) {
+		case 0:
+			return true;
+		case 1:
+		case 3:
+			return false;
+		default:
+			throw new IOException(org.apache.harmony.luni.util.Msg.getString("K01c2", path)); //$NON-NLS-1$
+		}
+	}
+
+	private native int newFileImpl(byte[] filePath);
+
+	/**
+	 * Creates an empty temporary file using the given prefix and suffix as part
+	 * of the file name. If suffix is null, <code>.tmp</code> is used.
+	 * 
+	 * @param prefix
+	 *            the prefix to the temp file name
+	 * @param suffix
+	 *            the suffix to the temp file name
+	 * @return the temporary file
+	 * 
+	 * @throws IOException
+	 *             If an error occurs when writing the file
+	 */
+	public static File createTempFile(String prefix, String suffix)
+			throws IOException {
+		return createTempFile(prefix, suffix, null);
+	}
+
+	/**
+	 * Creates an empty temporary file in the given directory using the given
+	 * prefix and suffix as part of the file name.
+	 * 
+	 * @param prefix
+	 *            the prefix to the temp file name
+	 * @param suffix
+	 *            the suffix to the temp file name
+	 * @param directory
+	 *            the location to which the temp file is to be written, or null
+	 *            for the default temp location
+	 * @return the temporary file
+	 * 
+	 * @throws IOException
+	 *             If an error occurs when writing the file
+	 */
+	public static File createTempFile(String prefix, String suffix,
+			File directory) throws IOException {
+		if (prefix != null) {
+			if (prefix.length() >= 3) {
+				String newSuffix = suffix == null ? ".tmp" : suffix; //$NON-NLS-1$
+				String tmpDir = "."; //$NON-NLS-1$
+				tmpDir = AccessController.doPrivileged(new PriviAction<String>("java.io.tmpdir", "."));   //$NON-NLS-1$//$NON-NLS-2$
+				File result, tmpDirFile = directory == null ? new File(tmpDir)
+						: directory;
+				do {
+					result = genTempFile(prefix, newSuffix, tmpDirFile);
+				} while (!result.createNewFile());
+				return result;
+			}
+			throw new IllegalArgumentException(org.apache.harmony.luni.util.Msg
+					.getString("K006b")); //$NON-NLS-1$
+		}
+		throw new NullPointerException();
+	}
+
+	private static File genTempFile(String prefix, String suffix, File directory) {
+		if (counter == 0) {
+			int newInt = new java.util.Random().nextInt();
+			counter = ((newInt / 65535) & 0xFFFF) + 0x2710;
+		}
+		StringBuilder newName = new StringBuilder();
+		newName.append(prefix);
+		newName.append(counter++);
+		newName.append(suffix);
+		return new File(directory, newName.toString());
+	}
+
+	/**
+	 * Answer a String representing the proper path for the receiver. If the
+	 * receiver is absolute do not prepend the user.dir property, otherwise do.
+	 * 
+	 * @param internal
+	 *            is user.dir internal
+	 * @return the proper path
+	 */
+	byte[] properPath(boolean internal) {
+		if (properPath != null)
+			return properPath;
+		byte[] pathBytes = org.apache.harmony.luni.util.Util.getBytes(path);
+		if (isAbsoluteImpl(pathBytes))
+			return properPath = pathBytes;
+		// Check security by getting user.dir when the path is not absolute
+		String userdir;
+		if (internal) {
+			userdir = AccessController.doPrivileged(new PriviAction<String>("user.dir")); //$NON-NLS-1$
+		} else
+			userdir = System.getProperty("user.dir"); //$NON-NLS-1$
+		if ((properPath = properPathImpl(pathBytes)) != null)
+			return properPath;
+		if (path.length() == 0)
+			return properPath = org.apache.harmony.luni.util.Util.getBytes(userdir);
+		int length = userdir.length();
+		if (path.charAt(0) == '\\') {
+			if (length > 1 && userdir.charAt(1) == ':') {
+				return properPath = org.apache.harmony.luni.util.Util.getBytes(userdir
+						.substring(0, 2)
+						+ path);
+			}
+			if (length > 0 && userdir.charAt(length - 1) == separatorChar) {
+				return properPath = org.apache.harmony.luni.util.Util.getBytes(userdir
+						+ path.substring(1));
+			}
+			return properPath = org.apache.harmony.luni.util.Util.getBytes(userdir + path);
+		}
+		if (length > 0 && userdir.charAt(length - 1) == separatorChar) {
+			return properPath = org.apache.harmony.luni.util.Util.getBytes(userdir + path);
+		}
+		return properPath = org.apache.harmony.luni.util.Util.getBytes(userdir + separator
+				+ path);
+	}
+
+	private static native byte[] properPathImpl(byte[] path);
+
+	/**
+	 * Renames this File to the name represented by the File <code>dest</code>.
+	 * This works for both normal files and directories.
+	 * 
+	 * @param dest
+	 *            the File containing the new name.
+	 * @return <code>true</code> if the File was renamed, <code>false</code>
+	 *         otherwise.
+	 * 
+	 * @see #getPath
+	 * @see java.lang.SecurityManager#checkRead(FileDescriptor)
+	 * @see java.lang.SecurityManager#checkWrite(FileDescriptor)
+	 */
+	public boolean renameTo(java.io.File dest) {
+		SecurityManager security = System.getSecurityManager();
+		if (security != null) {
+			security.checkWrite(path);
+			security.checkWrite(dest.path);
+		}
+		return renameToImpl(properPath(true), dest.properPath(true));
+	}
+
+	private native boolean renameToImpl(byte[] pathExist, byte[] pathNew);
+
+	/**
+	 * Answers a string containing a concise, human-readable description of the
+	 * receiver.
+	 * 
+	 * @return a printable representation for the receiver.
+	 */
+	public String toString() {
+		return path.toString();
+	}
+
+	/**
+	 * Answers a <code>file</code> URI for this File. The URI is System
+	 * dependent and may not be transferable between different operating/file
+	 * systems.
+	 * 
+	 * @return a <code>file</code> URI for this File.
+	 */
+	public URI toURI() {
+		String name = getAbsoluteName();
+		try {
+			if (!name.startsWith("/")) // On Windows, absolute paths might not //$NON-NLS-1$
+										// start with sep.
+				return new URI("file", null, //$NON-NLS-1$
+						new StringBuilder(name.length() + 1).append('/').append(
+								name).toString(), null, null);
+			else if (name.startsWith("//")) //$NON-NLS-1$
+				return new URI("file", name, null); // UNC path //$NON-NLS-1$
+			return new URI("file", null, name, null, null); //$NON-NLS-1$
+		} catch (URISyntaxException e) {
+			// this should never happen
+			return null;
+		}
+	}
+
+	/**
+	 * Answers a <code>file</code> URL for this File. The URL is System
+	 * dependent and may not be transferable between different operating/file
+	 * systems.
+	 * 
+	 * @return a <code>file</code> URL for this File.
+	 * 
+	 * @throws java.net.MalformedURLException
+	 *             if the path cannot be transformed into an URL
+	 */
+	public URL toURL() throws java.net.MalformedURLException {
+		String name = getAbsoluteName();
+		if (!name.startsWith("/")) // On Windows, absolute paths might not //$NON-NLS-1$
+									// start with sep.
+			return new URL("file", "", -1, new StringBuilder(name.length() + 1) //$NON-NLS-1$ //$NON-NLS-2$
+					.append('/').append(name).toString(), null);
+		else if (name.startsWith("//")) //$NON-NLS-1$
+			return new URL("file:" + name); // UNC path //$NON-NLS-1$
+		return new URL("file", "", -1, name, null); //$NON-NLS-1$ //$NON-NLS-2$
+	}
+
+	private String getAbsoluteName() {
+        String name = getAbsolutePath();
+        if (isDirectory() && name.charAt(name.length() - 1) != separatorChar) {
+            // Directories must end with a slash
+            name = new StringBuilder(name.length() + 1).append(name)
+                    .append('/').toString();
+        }
+        if (separatorChar != '/') { // Must convert slashes.
+            name = name.replace(separatorChar, '/');
+        }
+        return name;
+    }
+
+	private void writeObject(ObjectOutputStream stream) throws IOException {
+		stream.defaultWriteObject();
+		stream.writeChar(separatorChar);
+
+	}
+
+	private void readObject(ObjectInputStream stream) throws IOException,
+			ClassNotFoundException {
+		stream.defaultReadObject();
+		char inSeparator = stream.readChar();
+		path = path.replace(inSeparator, separatorChar);
+	}
+
+}

Propchange: incubator/harmony/enhanced/classlib/trunk/modules/luni/src/main/java/java/io/File.java
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