--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/jdk/src/share/classes/java/io/FileSystem.java Sat Dec 01 00:00:00 2007 +0000
@@ -0,0 +1,252 @@
+/*
+ * Copyright 1998-2005 Sun Microsystems, Inc. All Rights Reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation. Sun designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Sun in the LICENSE file that accompanied this code.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.com if you need additional information or
+ * have any questions.
+ */
+
+package java.io;
+
+
+/**
+ * Package-private abstract class for the local filesystem abstraction.
+ */
+
+abstract class FileSystem {
+
+ /**
+ * Return the FileSystem object representing this platform's local
+ * filesystem.
+ */
+ public static native FileSystem getFileSystem();
+
+
+ /* -- Normalization and construction -- */
+
+ /**
+ * Return the local filesystem's name-separator character.
+ */
+ public abstract char getSeparator();
+
+ /**
+ * Return the local filesystem's path-separator character.
+ */
+ public abstract char getPathSeparator();
+
+ /**
+ * Convert the given pathname string to normal form. If the string is
+ * already in normal form then it is simply returned.
+ */
+ public abstract String normalize(String path);
+
+ /**
+ * Compute the length of this pathname string's prefix. The pathname
+ * string must be in normal form.
+ */
+ public abstract int prefixLength(String path);
+
+ /**
+ * Resolve the child pathname string against the parent.
+ * Both strings must be in normal form, and the result
+ * will be in normal form.
+ */
+ public abstract String resolve(String parent, String child);
+
+ /**
+ * Return the parent pathname string to be used when the parent-directory
+ * argument in one of the two-argument File constructors is the empty
+ * pathname.
+ */
+ public abstract String getDefaultParent();
+
+ /**
+ * Post-process the given URI path string if necessary. This is used on
+ * win32, e.g., to transform "/c:/foo" into "c:/foo". The path string
+ * still has slash separators; code in the File class will translate them
+ * after this method returns.
+ */
+ public abstract String fromURIPath(String path);
+
+
+ /* -- Path operations -- */
+
+ /**
+ * Tell whether or not the given abstract pathname is absolute.
+ */
+ public abstract boolean isAbsolute(File f);
+
+ /**
+ * Resolve the given abstract pathname into absolute form. Invoked by the
+ * getAbsolutePath and getCanonicalPath methods in the File class.
+ */
+ public abstract String resolve(File f);
+
+ public abstract String canonicalize(String path) throws IOException;
+
+
+ /* -- Attribute accessors -- */
+
+ /* Constants for simple boolean attributes */
+ public static final int BA_EXISTS = 0x01;
+ public static final int BA_REGULAR = 0x02;
+ public static final int BA_DIRECTORY = 0x04;
+ public static final int BA_HIDDEN = 0x08;
+
+ /**
+ * Return the simple boolean attributes for the file or directory denoted
+ * by the given abstract pathname, or zero if it does not exist or some
+ * other I/O error occurs.
+ */
+ public abstract int getBooleanAttributes(File f);
+
+ public static final int ACCESS_READ = 0x04;
+ public static final int ACCESS_WRITE = 0x02;
+ public static final int ACCESS_EXECUTE = 0x01;
+
+ /**
+ * Check whether the file or directory denoted by the given abstract
+ * pathname may be accessed by this process. The second argument specifies
+ * which access, ACCESS_READ, ACCESS_WRITE or ACCESS_EXECUTE, to check.
+ * Return false if access is denied or an I/O error occurs
+ */
+ public abstract boolean checkAccess(File f, int access);
+ /**
+ * Set on or off the access permission (to owner only or to all) to the file
+ * or directory denoted by the given abstract pathname, based on the parameters
+ * enable, access and oweronly.
+ */
+ public abstract boolean setPermission(File f, int access, boolean enable, boolean owneronly);
+
+ /**
+ * Return the time at which the file or directory denoted by the given
+ * abstract pathname was last modified, or zero if it does not exist or
+ * some other I/O error occurs.
+ */
+ public abstract long getLastModifiedTime(File f);
+
+ /**
+ * Return the length in bytes of the file denoted by the given abstract
+ * pathname, or zero if it does not exist, is a directory, or some other
+ * I/O error occurs.
+ */
+ public abstract long getLength(File f);
+
+
+ /* -- File operations -- */
+
+ /**
+ * Create a new empty file with the given pathname. Return
+ * <code>true</code> if the file was created and <code>false</code> if a
+ * file or directory with the given pathname already exists. Throw an
+ * IOException if an I/O error occurs.
+ */
+ public abstract boolean createFileExclusively(String pathname)
+ throws IOException;
+
+ /**
+ * Delete the file or directory denoted by the given abstract pathname,
+ * returning <code>true</code> if and only if the operation succeeds.
+ */
+ public abstract boolean delete(File f);
+
+ /**
+ * List the elements of the directory denoted by the given abstract
+ * pathname. Return an array of strings naming the elements of the
+ * directory if successful; otherwise, return <code>null</code>.
+ */
+ public abstract String[] list(File f);
+
+ /**
+ * Create a new directory denoted by the given abstract pathname,
+ * returning <code>true</code> if and only if the operation succeeds.
+ */
+ public abstract boolean createDirectory(File f);
+
+ /**
+ * Rename the file or directory denoted by the first abstract pathname to
+ * the second abstract pathname, returning <code>true</code> if and only if
+ * the operation succeeds.
+ */
+ public abstract boolean rename(File f1, File f2);
+
+ /**
+ * Set the last-modified time of the file or directory denoted by the
+ * given abstract pathname, returning <code>true</code> if and only if the
+ * operation succeeds.
+ */
+ public abstract boolean setLastModifiedTime(File f, long time);
+
+ /**
+ * Mark the file or directory denoted by the given abstract pathname as
+ * read-only, returning <code>true</code> if and only if the operation
+ * succeeds.
+ */
+ public abstract boolean setReadOnly(File f);
+
+
+ /* -- Filesystem interface -- */
+
+ /**
+ * List the available filesystem roots.
+ */
+ public abstract File[] listRoots();
+
+ /* -- Disk usage -- */
+ public static final int SPACE_TOTAL = 0;
+ public static final int SPACE_FREE = 1;
+ public static final int SPACE_USABLE = 2;
+
+ public abstract long getSpace(File f, int t);
+
+ /* -- Basic infrastructure -- */
+
+ /**
+ * Compare two abstract pathnames lexicographically.
+ */
+ public abstract int compare(File f1, File f2);
+
+ /**
+ * Compute the hash code of an abstract pathname.
+ */
+ public abstract int hashCode(File f);
+
+ // Flags for enabling/disabling performance optimizations for file
+ // name canonicalization
+ static boolean useCanonCaches = true;
+ static boolean useCanonPrefixCache = true;
+
+ private static boolean getBooleanProperty(String prop, boolean defaultVal) {
+ String val = System.getProperty(prop);
+ if (val == null) return defaultVal;
+ if (val.equalsIgnoreCase("true")) {
+ return true;
+ } else {
+ return false;
+ }
+ }
+
+ static {
+ useCanonCaches = getBooleanProperty("sun.io.useCanonCaches",
+ useCanonCaches);
+ useCanonPrefixCache = getBooleanProperty("sun.io.useCanonPrefixCache",
+ useCanonPrefixCache);
+ }
+}