1 /*

     2  * Copyright (c) 2016, 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 "Classfile" 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 jdk.tools.jlink.internal;

    27 

    28 import java.io.IOException;

    29 import java.io.InputStream;

    30 import java.io.UncheckedIOException;

    31 import java.nio.file.Files;

    32 import java.nio.file.Path;

    33 import java.util.Objects;

    34 

    35 /**

    36  * A ModuleEntry backed by a given nio Path.

    37  */

    38 public class PathModuleEntry extends AbstractModuleEntry {

    39     private final Path file;

    40 

    41     /**

    42      * Create a new PathModuleEntry.

    43      *

    44      * @param module The module name.

    45      * @param path The path for the resource content.

    46      * @param type The data type.

    47      * @param file The data file identifier.

    48      */

    49     public PathModuleEntry(String module, String path, Type type, Path file) {

    50         super(module, path, type);

    51         this.file = Objects.requireNonNull(file);

    52         if (!Files.isRegularFile(file)) {

    53             throw new IllegalArgumentException(file + " not a file");

    54         }

    55     }

    56 

    57     @Override

    58     public final InputStream stream() {

    59         try {

    60             return Files.newInputStream(file);

    61         } catch (IOException ex) {

    62             throw new UncheckedIOException(ex);

    63         }

    64     }

    65 

    66     @Override

    67     public final long getLength() {

    68         try {

    69             return Files.size(file);

    70         } catch (IOException ex) {

    71             throw new UncheckedIOException(ex);

    72         }

    73     }

    74 }