Showing the changes to java/pkg/sun/nio/fs/AbstractFileSystemProvider.java (1 of 18352 files). Show all
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| 1 | /* | ||
| 2 | * Copyright (c) 2011, Oracle and/or its affiliates. All rights reserved. | ||
| 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. | ||
| 4 | * | ||
| 5 | * This code is free software; you can redistribute it and/or modify it | ||
| 6 | * under the terms of the GNU General Public License version 2 only, as | ||
| 7 | * published by the Free Software Foundation. Oracle designates this | ||
| 8 | * particular file as subject to the "Classpath" exception as provided | ||
| 9 | * by Oracle in the LICENSE file that accompanied this code. | ||
| 10 | * | ||
| 11 | * This code is distributed in the hope that it will be useful, but WITHOUT | ||
| 12 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | ||
| 13 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | ||
| 14 | * version 2 for more details (a copy is included in the LICENSE file that | ||
| 15 | * accompanied this code). | ||
| 16 | * | ||
| 17 | * You should have received a copy of the GNU General Public License version | ||
| 18 | * 2 along with this work; if not, write to the Free Software Foundation, | ||
| 19 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | ||
| 20 | * | ||
| 21 | * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA | ||
| 22 | * or visit www.oracle.com if you need additional information or have any | ||
| 23 | * questions. | ||
| 24 | */ | ||
| 25 | |||
| 26 | package sun.nio.fs; | ||
| 27 | |||
| 28 | import java.nio.file.*; | ||
| 29 | import java.nio.file.spi.FileSystemProvider; | ||
| 30 | import java.io.IOException; | ||
| 31 | import java.util.Map; | ||
| 32 | |||
| 33 | /** | ||
| 34 | * Base implementation class of FileSystemProvider | ||
| 35 | */ | ||
| 36 | |||
| 37 | abstract class AbstractFileSystemProvider extends FileSystemProvider { | ||
| 38 | protected AbstractFileSystemProvider() { } | ||
| 39 | |||
| 40 | /** | ||
| 41 | * Splits the given attribute name into the name of an attribute view and | ||
| 42 | * the attribute. If the attribute view is not identified then it assumed | ||
| 43 | * to be "basic". | ||
| 44 | */ | ||
| 45 | private static String[] split(String attribute) { | ||
| 46 | String[] s = new String[2]; | ||
| 47 | int pos = attribute.indexOf(':'); | ||
| 48 | if (pos == -1) { | ||
| 49 | s[0] = "basic"; | ||
| 50 | s[1] = attribute; | ||
| 51 | } else { | ||
| 52 | s[0] = attribute.substring(0, pos++); | ||
| 53 | s[1] = (pos == attribute.length()) ? "" : attribute.substring(pos); | ||
| 54 | } | ||
| 55 | return s; | ||
| 56 | } | ||
| 57 | |||
| 58 | /** | ||
| 59 | * Gets a DynamicFileAttributeView by name. Returns {@code null} if the | ||
| 60 | * view is not available. | ||
| 61 | */ | ||
| 62 | abstract DynamicFileAttributeView getFileAttributeView(Path file, | ||
| 63 | String name, | ||
| 64 | LinkOption... options); | ||
| 65 | |||
| 66 | @Override | ||
| 67 | public final void setAttribute(Path file, | ||
| 68 | String attribute, | ||
| 69 | Object value, | ||
| 70 | LinkOption... options) | ||
| 71 | throws IOException | ||
| 72 | { | ||
| 73 | String[] s = split(attribute); | ||
| 74 | if (s[0].length() == 0) | ||
| 75 | throw new IllegalArgumentException(attribute); | ||
| 76 | DynamicFileAttributeView view = getFileAttributeView(file, s[0], options); | ||
| 77 | if (view == null) | ||
| 78 | throw new UnsupportedOperationException("View '" + s[0] + "' not available"); | ||
| 79 | view.setAttribute(s[1], value); | ||
| 80 | } | ||
| 81 | |||
| 82 | @Override | ||
| 83 | public final Map<String,Object> readAttributes(Path file, String attributes, LinkOption... options) | ||
| 84 | throws IOException | ||
| 85 | { | ||
| 86 | String[] s = split(attributes); | ||
| 87 | if (s[0].length() == 0) | ||
| 88 | throw new IllegalArgumentException(attributes); | ||
| 89 | DynamicFileAttributeView view = getFileAttributeView(file, s[0], options); | ||
| 90 | if (view == null) | ||
| 91 | throw new UnsupportedOperationException("View '" + s[0] + "' not available"); | ||
| 92 | return view.readAttributes(s[1].split(",")); | ||
| 93 | } | ||
| 94 | |||
| 95 | /** | ||
| 96 | * Deletes a file. The {@code failIfNotExists} parameters determines if an | ||
| 97 | * {@code IOException} is thrown when the file does not exist. | ||
| 98 | */ | ||
| 99 | abstract boolean implDelete(Path file, boolean failIfNotExists) throws IOException; | ||
| 100 | |||
| 101 | @Override | ||
| 102 | public final void delete(Path file) throws IOException { | ||
| 103 | implDelete(file, true); | ||
| 104 | } | ||
| 105 | |||
| 106 | @Override | ||
| 107 | public final boolean deleteIfExists(Path file) throws IOException { | ||
| 108 | return implDelete(file, false); | ||
| 109 | } | ||
| 110 | } | ||