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 | +} | |