+++ /dev/null
-// File.java - File name
-
-/* Copyright (C) 1998, 1999, 2000, 2001 Free Software Foundation
-
- This file is part of libgcj.
-
-This software is copyrighted work licensed under the terms of the
-Libgcj License. Please consult the file "LIBGCJ_LICENSE" for
-details. */
-
-package java.io;
-
-import java.util.*;
-import java.net.*;
-import gnu.gcj.runtime.FileDeleter;
-
-/**
- * @author Tom Tromey <tromey@cygnus.com>
- * @date September 24, 1998
- */
-
-/* Written using "Java Class Libraries", 2nd edition, ISBN 0-201-31002-3
- * "The Java Language Specification", ISBN 0-201-63451-1
- * Status: Complete to version 1.3.
- */
-
-public class File implements Serializable, Comparable
-{
- public boolean canRead ()
- {
- checkRead();
- return _access (READ);
- }
-
- public boolean canWrite ()
- {
- checkWrite();
- return _access (WRITE);
- }
-
- private native boolean performCreate() throws IOException;
-
- /** @since 1.2 */
- public boolean createNewFile() throws IOException
- {
- checkWrite();
- return performCreate();
- }
-
- private native boolean performDelete ();
- public boolean delete ()
- {
- SecurityManager s = System.getSecurityManager();
- String name = path;
- if (s != null)
- s.checkDelete(path);
- return performDelete ();
- }
-
- public boolean equals (Object obj)
- {
- if (! (obj instanceof File))
- return false;
- File other = (File) obj;
- if (caseSensitive)
- return (path.equals(other.path));
- else
- return (path.equalsIgnoreCase(other.path));
- }
-
- public boolean exists ()
- {
- checkRead();
- return _access (EXISTS);
- }
-
- public File (String p)
- {
- path = normalizePath(p);
- }
-
- // Remove duplicate and redundant separator characters.
- private String normalizePath(String p)
- {
- // On Windows, convert any '/' to '\'. This appears to be the same logic
- // that Sun's Win32 Java performs.
- if (separatorChar == '\\')
- p = p.replace ('/', '\\');
-
- int dupIndex = p.indexOf(dupSeparator);
- int plen = p.length();
-
- // Special case: permit Windows UNC path prefix.
- if (dupSeparator.equals("\\\\") && dupIndex == 0)
- dupIndex = p.indexOf(dupSeparator, 1);
-
- if (dupIndex == -1)
- {
- // Ignore trailing separator.
- if (plen > 1 && p.charAt(plen - 1) == separatorChar)
- return p.substring(0, plen - 1);
- else
- return p;
- }
-
- StringBuffer newpath = new StringBuffer(plen);
- int last = 0;
- while (dupIndex != -1)
- {
- newpath.append(p.substring(last, dupIndex));
- // Ignore the duplicate path characters.
- while (p.charAt(dupIndex) == separatorChar)
- {
- dupIndex++;
- if (dupIndex == plen)
- return newpath.toString();
- }
- newpath.append(separatorChar);
- last = dupIndex;
- dupIndex = p.indexOf(dupSeparator, last);
- }
-
- // Again, ignore possible trailing separator.
- int end;
- if (plen > 1 && p.charAt(plen - 1) == separatorChar)
- end = plen - 1;
- else
- end = plen;
- newpath.append(p.substring(last, end));
-
- return newpath.toString();
- }
-
- public File (String dirPath, String name)
- {
- if (name == null)
- throw new NullPointerException ();
- if (dirPath != null && dirPath.length() > 0)
- {
- // Try to be smart about the number of separator characters.
- if (dirPath.charAt(dirPath.length() - 1) == separatorChar
- || name.length() == 0)
- path = normalizePath(dirPath + name);
- else
- path = normalizePath(dirPath + separatorChar + name);
- }
- else
- path = normalizePath(name);
- }
-
- public File (File dir, String name)
- {
- this (dir == null ? null : dir.path, name);
- }
-
- // FIXME ???
- public String getAbsolutePath ()
- {
- if (isAbsolute ())
- return path;
- return System.getProperty("user.dir") + separatorChar + path;
- }
-
- /** @since 1.2 */
- public File getAbsoluteFile ()
- {
- return new File (getAbsolutePath());
- }
-
- public native String getCanonicalPath () throws IOException;
-
- /** @since 1.2 */
- public File getCanonicalFile () throws IOException
- {
- return new File (getCanonicalPath());
- }
-
- public String getName ()
- {
- int last = path.lastIndexOf(separatorChar);
- return path.substring(last + 1);
- }
-
- public String getParent ()
- {
- int last = path.lastIndexOf(separatorChar);
- if (last == -1)
- return null;
- // FIXME: POSIX assumption.
- if (last == 0 && path.charAt (0) == '/')
- ++last;
- return path.substring(0, last);
- }
-
- /** @since 1.2 */
- public File getParentFile ()
- {
- String parent = getParent ();
- return (parent == null ? null : new File (parent));
- }
-
- public String getPath ()
- {
- return path;
- }
-
- public int hashCode ()
- {
- if (caseSensitive)
- return (path.hashCode() ^ 1234321);
- else
- return (path.toLowerCase().hashCode() ^ 1234321);
- }
-
- public native boolean isAbsolute ();
-
- public boolean isDirectory ()
- {
- checkRead();
- return _stat (DIRECTORY);
- }
-
- public boolean isFile ()
- {
- checkRead();
- return _stat (ISFILE);
- }
-
- /** @since 1.2 */
- public boolean isHidden()
- {
- checkRead();
- return _stat (ISHIDDEN);
- }
-
- public long lastModified ()
- {
- checkRead();
- return attr (MODIFIED);
- }
-
- public long length ()
- {
- checkRead();
- return attr (LENGTH);
- }
-
- private final native Object[] performList (FilenameFilter filter,
- FileFilter fileFilter,
- Class result_type);
-
- public String[] list (FilenameFilter filter)
- {
- checkRead();
- return (String[]) performList (filter, null, String.class);
- }
-
- public String[] list ()
- {
- checkRead();
- return (String[]) performList (null, null, String.class);
- }
-
- /** @since 1.2 */
- public File[] listFiles()
- {
- checkRead();
- return (File[]) performList (null, null, File.class);
- }
-
- /** @since 1.2 */
- public File[] listFiles(FilenameFilter filter)
- {
- checkRead();
- return (File[]) performList (filter, null, File.class);
- }
-
- /** @since 1.2 */
- public File[] listFiles(FileFilter filter)
- {
- checkRead();
- return (File[]) performList (null, filter, File.class);
- }
-
- public String toString ()
- {
- return path;
- }
-
- public URL toURL () throws MalformedURLException
- {
- return new URL ("file://" + getAbsolutePath ()
- + (isDirectory() ? "/" : ""));
- }
-
- private final native boolean performMkdir ();
-
- public boolean mkdir ()
- {
- checkWrite();
- return performMkdir ();
- }
-
- private static boolean mkdirs (File x)
- {
- if (x.isDirectory())
- return true;
- String p = x.getPath();
- String parent = x.getParent();
- if (parent != null)
- {
- x.path = parent;
- if (! mkdirs (x))
- return false;
- x.path = p;
- }
- return x.mkdir();
- }
-
- public boolean mkdirs ()
- {
- checkWrite();
- if (isDirectory ())
- return false;
- return mkdirs (new File (path));
- }
-
- private static synchronized String nextValue ()
- {
- return Long.toString(counter++, Character.MAX_RADIX);
- }
-
- /** @since 1.2 */
- public static File createTempFile (String prefix, String suffix,
- File directory)
- throws IOException
- {
- // Grab the system temp directory if necessary
- if (directory == null)
- {
- String dirname = tmpdir;
- if (dirname == null)
- throw
- new IOException("Cannot determine system temporary directory");
-
- directory = new File(dirname);
- if (!directory.exists())
- throw new IOException("System temporary directory "
- + directory.getName() + " does not exist.");
- if (!directory.isDirectory())
- throw new IOException("System temporary directory "
- + directory.getName()
- + " is not really a directory.");
- }
-
- if (prefix.length () < 3)
- throw new IllegalArgumentException ("Prefix too short: " + prefix);
- if (suffix == null)
- suffix = ".tmp";
-
- // Truncation rules.
- // `6' is the number of characters we generate.
- if (prefix.length () + 6 + suffix.length () > maxPathLen)
- {
- int suf_len = 0;
- if (suffix.charAt(0) == '.')
- suf_len = 4;
- suffix = suffix.substring(0, suf_len);
- if (prefix.length () + 6 + suf_len > maxPathLen)
- prefix = prefix.substring(0, maxPathLen - 6 - suf_len);
- }
-
- File f;
-
- // How many times should we try? We choose 100.
- for (int i = 0; i < 100; ++i)
- {
- // This is ugly.
- String t = "ZZZZZZ" + nextValue ();
- String l = prefix + t.substring(t.length() - 6) + suffix;
- try
- {
- f = new File(directory, l);
- if (f.createNewFile())
- return f;
- }
- catch (IOException ignored)
- {
- }
- }
-
- throw new IOException ("cannot create temporary file");
- }
-
- private native boolean performSetReadOnly();
-
- /** @since 1.2 */
- public boolean setReadOnly()
- {
- checkWrite();
- return performSetReadOnly();
- }
-
- private static native File[] performListRoots();
-
- /** @since 1.2 */
- public static File[] listRoots()
- {
- File[] roots = performListRoots();
-
- SecurityManager s = System.getSecurityManager();
- if (s != null)
- {
- // Only return roots to which the security manager permits read access.
- int count = roots.length;
- for (int i = 0; i < roots.length; i++)
- {
- try
- {
- s.checkRead(roots[i].path);
- }
- catch (SecurityException sx)
- {
- roots[i] = null;
- count--;
- }
- }
- if (count != roots.length)
- {
- File[] newRoots = new File[count];
- int k = 0;
- for (int i=0; i < roots.length; i++)
- {
- if (roots[i] != null)
- newRoots[k++] = roots[i];
- }
- roots = newRoots;
- }
- }
- return roots;
- }
-
- public static File createTempFile (String prefix, String suffix)
- throws IOException
- {
- return createTempFile (prefix, suffix, null);
- }
-
- /** @since 1.2 */
- public int compareTo(File other)
- {
- if (caseSensitive)
- return path.compareTo (other.path);
- else
- return path.compareToIgnoreCase (other.path);
- }
-
- /** @since 1.2 */
- public int compareTo(Object o)
- {
- File other = (File) o;
- return compareTo (other);
- }
-
- private native boolean performRenameTo (File dest);
- public boolean renameTo (File dest)
- {
- SecurityManager s = System.getSecurityManager();
- String sname = getName();
- String dname = dest.getName();
- if (s != null)
- {
- s.checkWrite(sname);
- s.checkWrite(dname);
- }
- return performRenameTo (dest);
- }
-
- private native boolean performSetLastModified(long time);
-
- /** @since 1.2 */
- public boolean setLastModified(long time)
- {
- checkWrite();
- return performSetLastModified(time);
- }
-
- public static final String pathSeparator
- = System.getProperty("path.separator");
- public static final char pathSeparatorChar = pathSeparator.charAt(0);
- public static final String separator = System.getProperty("file.separator");
- public static final char separatorChar = separator.charAt(0);
-
- static final String tmpdir = System.getProperty("java.io.tmpdir");
- static int maxPathLen;
- static boolean caseSensitive;
- static String dupSeparator = separator + separator;
-
- static
- {
- init_native();
- }
-
- // Native function called at class initialization. This should should
- // set the maxPathLen and caseSensitive variables.
- private static native void init_native();
-
- // The path.
- private String path;
-
- // We keep a counter for use by createTempFile. We choose the first
- // value randomly to try to avoid clashes with other VMs.
- private static long counter = Double.doubleToLongBits (Math.random ());
-
- private void checkWrite ()
- {
- SecurityManager s = System.getSecurityManager();
- if (s != null)
- s.checkWrite(path);
- }
-
- private void checkRead ()
- {
- SecurityManager s = System.getSecurityManager();
- if (s != null)
- s.checkRead(path);
- }
-
- /**
- * Add this File to the set of files to be deleted upon normal
- * termination.
- *
- * @since 1.2
- */
- // FIXME: This should use the ShutdownHook API once we implement that.
- public void deleteOnExit ()
- {
- SecurityManager sm = System.getSecurityManager ();
- if (sm != null)
- sm.checkDelete (getName ());
-
- FileDeleter.add (this);
- }
-
- private void writeObject (ObjectOutputStream oos) throws IOException
- {
- oos.defaultWriteObject ();
- oos.writeChar (separatorChar);
- }
-
- private void readObject (ObjectInputStream ois)
- throws ClassNotFoundException, IOException
- {
- ois.defaultReadObject ();
-
- // If the file was from an OS with a different dir separator,
- // fixup the path to use the separator on this OS.
- char oldSeparatorChar = ois.readChar ();
- if (oldSeparatorChar != separatorChar)
- path = path.replace (oldSeparatorChar, separatorChar);
- }
-
- // QUERY arguments to access function.
- private final static int READ = 0;
- private final static int WRITE = 1;
- private final static int EXISTS = 2;
-
- // QUERY arguments to stat function.
- private final static int DIRECTORY = 0;
- private final static int ISFILE = 1;
- private final static int ISHIDDEN = 2;
-
- // QUERY arguments to attr function.
- private final static int MODIFIED = 0;
- private final static int LENGTH = 1;
-
- private final native long attr (int query);
- // On OSF1 V5.0, `stat' is a macro. It is easiest to use the name
- // `_stat' instead. We do the same thing for `_access' just in
- // case.
- private final native boolean _access (int query);
- private final native boolean _stat (int query);
-
- private static final long serialVersionUID = 301077366599181567L;
-}
projects / msp430-gcc.git / blobdiff