1 /*

     2  * Copyright (c) 2017, 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.

     8  *

     9  * This code is distributed in the hope that it will be useful, but WITHOUT

    10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

    11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

    12  * version 2 for more details (a copy is included in the LICENSE file that

    13  * accompanied this code).

    14  *

    15  * You should have received a copy of the GNU General Public License version

    16  * 2 along with this work; if not, write to the Free Software Foundation,

    17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

    18  *

    19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

    20  * or visit www.oracle.com if you need additional information or have any

    21  * questions.

    22  */

    23 package jdk.tools.jaotc.collect.module;

    24 

    25 import jdk.tools.jaotc.collect.ClassSource;

    26 import jdk.tools.jaotc.collect.FileSupport;

    27 import jdk.tools.jaotc.collect.SearchPath;

    28 import jdk.tools.jaotc.collect.SourceProvider;

    29 

    30 import java.io.IOException;

    31 import java.net.URI;

    32 import java.nio.file.FileSystem;

    33 import java.nio.file.FileSystems;

    34 import java.nio.file.Path;

    35 

    36 public class ModuleSourceProvider implements SourceProvider {

    37     private final FileSystem fileSystem;

    38     private final ClassLoader classLoader;

    39     private final FileSupport fileSupport;

    40     public final static String TYPE = "module";

    41 

    42     public ModuleSourceProvider() {

    43         this(FileSystems.getFileSystem(URI.create("jrt:/")), ClassLoader.getSystemClassLoader(), new FileSupport());

    44     }

    45 

    46     public ModuleSourceProvider(FileSystem fileSystem, ClassLoader classLoader, FileSupport fileSupport) {

    47         this.fileSystem = fileSystem;

    48         this.classLoader = classLoader;

    49         this.fileSupport = fileSupport;

    50     }

    51 

    52     @Override

    53     public ClassSource findSource(String name, SearchPath searchPath) {

    54         Path path = fileSystem.getPath(name);

    55         Path dir = fileSystem.getPath("modules");

    56 

    57         if (dir == null || !fileSupport.isDirectory(dir)) {

    58             return null;

    59         }

    60 

    61         Path found = findModuleDirectory(dir, path);

    62 

    63         if (found == null) {

    64             return null;

    65         }

    66 

    67         return new ModuleSource(found, classLoader);

    68     }

    69 

    70     private Path findModuleDirectory(Path root, Path path) {

    71         try {

    72             return fileSupport.getSubDirectory(fileSystem, root, path);

    73         } catch (IOException e) {

    74             throw new InternalError(e);

    75         }

    76     }

    77 

    78     @Override

    79     public boolean supports(String type) {

    80         return TYPE.equals(type);

    81     }

    82 }