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8187443: Forest Consolidation: Move files to unified layout
Reviewed-by: darcy, ihse
This commit is contained in:
Erik Joelsson
parent
270fe13182
commit
3789983e89
56923 changed files with 3 additions and 15727 deletions
248
src/java.base/share/classes/java/io/FileSystem.java
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248
src/java.base/share/classes/java/io/FileSystem.java
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/*
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* Copyright (c) 1998, 2016, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation. Oracle designates this
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* particular file as subject to the "Classpath" exception as provided
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* by Oracle in the LICENSE file that accompanied this code.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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package java.io;
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import java.lang.annotation.Native;
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/**
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* Package-private abstract class for the local filesystem abstraction.
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*/
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abstract class FileSystem {
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/* -- Normalization and construction -- */
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/**
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* Return the local filesystem's name-separator character.
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*/
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public abstract char getSeparator();
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/**
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* Return the local filesystem's path-separator character.
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*/
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public abstract char getPathSeparator();
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/**
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* Convert the given pathname string to normal form. If the string is
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* already in normal form then it is simply returned.
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*/
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public abstract String normalize(String path);
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/**
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* Compute the length of this pathname string's prefix. The pathname
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* string must be in normal form.
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*/
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public abstract int prefixLength(String path);
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/**
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* Resolve the child pathname string against the parent.
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* Both strings must be in normal form, and the result
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* will be in normal form.
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*/
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public abstract String resolve(String parent, String child);
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/**
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* Return the parent pathname string to be used when the parent-directory
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* argument in one of the two-argument File constructors is the empty
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* pathname.
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*/
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public abstract String getDefaultParent();
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/**
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* Post-process the given URI path string if necessary. This is used on
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* win32, e.g., to transform "/c:/foo" into "c:/foo". The path string
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* still has slash separators; code in the File class will translate them
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* after this method returns.
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*/
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public abstract String fromURIPath(String path);
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/* -- Path operations -- */
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/**
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* Tell whether or not the given abstract pathname is absolute.
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*/
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public abstract boolean isAbsolute(File f);
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/**
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* Resolve the given abstract pathname into absolute form. Invoked by the
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* getAbsolutePath and getCanonicalPath methods in the File class.
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*/
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public abstract String resolve(File f);
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public abstract String canonicalize(String path) throws IOException;
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/* -- Attribute accessors -- */
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/* Constants for simple boolean attributes */
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@Native public static final int BA_EXISTS = 0x01;
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@Native public static final int BA_REGULAR = 0x02;
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@Native public static final int BA_DIRECTORY = 0x04;
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@Native public static final int BA_HIDDEN = 0x08;
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/**
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* Return the simple boolean attributes for the file or directory denoted
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* by the given abstract pathname, or zero if it does not exist or some
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* other I/O error occurs.
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*/
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public abstract int getBooleanAttributes(File f);
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@Native public static final int ACCESS_READ = 0x04;
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@Native public static final int ACCESS_WRITE = 0x02;
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@Native public static final int ACCESS_EXECUTE = 0x01;
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/**
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* Check whether the file or directory denoted by the given abstract
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* pathname may be accessed by this process. The second argument specifies
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* which access, ACCESS_READ, ACCESS_WRITE or ACCESS_EXECUTE, to check.
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* Return false if access is denied or an I/O error occurs
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*/
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public abstract boolean checkAccess(File f, int access);
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/**
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* Set on or off the access permission (to owner only or to all) to the file
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* or directory denoted by the given abstract pathname, based on the parameters
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* enable, access and oweronly.
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*/
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public abstract boolean setPermission(File f, int access, boolean enable, boolean owneronly);
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/**
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* Return the time at which the file or directory denoted by the given
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* abstract pathname was last modified, or zero if it does not exist or
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* some other I/O error occurs.
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*/
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public abstract long getLastModifiedTime(File f);
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/**
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* Return the length in bytes of the file denoted by the given abstract
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* pathname, or zero if it does not exist, is a directory, or some other
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* I/O error occurs.
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*/
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public abstract long getLength(File f);
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/* -- File operations -- */
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/**
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* Create a new empty file with the given pathname. Return
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* <code>true</code> if the file was created and <code>false</code> if a
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* file or directory with the given pathname already exists. Throw an
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* IOException if an I/O error occurs.
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*/
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public abstract boolean createFileExclusively(String pathname)
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throws IOException;
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/**
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* Delete the file or directory denoted by the given abstract pathname,
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* returning <code>true</code> if and only if the operation succeeds.
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*/
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public abstract boolean delete(File f);
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/**
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* List the elements of the directory denoted by the given abstract
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* pathname. Return an array of strings naming the elements of the
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* directory if successful; otherwise, return <code>null</code>.
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*/
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public abstract String[] list(File f);
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/**
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* Create a new directory denoted by the given abstract pathname,
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* returning <code>true</code> if and only if the operation succeeds.
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*/
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public abstract boolean createDirectory(File f);
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/**
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* Rename the file or directory denoted by the first abstract pathname to
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* the second abstract pathname, returning <code>true</code> if and only if
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* the operation succeeds.
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*/
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public abstract boolean rename(File f1, File f2);
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/**
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* Set the last-modified time of the file or directory denoted by the
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* given abstract pathname, returning <code>true</code> if and only if the
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* operation succeeds.
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*/
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public abstract boolean setLastModifiedTime(File f, long time);
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/**
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* Mark the file or directory denoted by the given abstract pathname as
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* read-only, returning <code>true</code> if and only if the operation
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* succeeds.
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*/
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public abstract boolean setReadOnly(File f);
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/* -- Filesystem interface -- */
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/**
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* List the available filesystem roots.
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*/
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public abstract File[] listRoots();
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/* -- Disk usage -- */
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@Native public static final int SPACE_TOTAL = 0;
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@Native public static final int SPACE_FREE = 1;
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@Native public static final int SPACE_USABLE = 2;
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public abstract long getSpace(File f, int t);
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/* -- Basic infrastructure -- */
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/**
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* Retrieve the maximum length of a component of a file path.
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*
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* @return The maximum length of a file path component.
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*/
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public abstract int getNameMax(String path);
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/**
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* Compare two abstract pathnames lexicographically.
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*/
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public abstract int compare(File f1, File f2);
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/**
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* Compute the hash code of an abstract pathname.
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*/
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public abstract int hashCode(File f);
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// Flags for enabling/disabling performance optimizations for file
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// name canonicalization
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static boolean useCanonCaches = true;
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static boolean useCanonPrefixCache = true;
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private static boolean getBooleanProperty(String prop, boolean defaultVal) {
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return Boolean.parseBoolean(System.getProperty(prop,
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String.valueOf(defaultVal)));
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}
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static {
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useCanonCaches = getBooleanProperty("sun.io.useCanonCaches",
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useCanonCaches);
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useCanonPrefixCache = getBooleanProperty("sun.io.useCanonPrefixCache",
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useCanonPrefixCache);
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}
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}
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