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 "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 package jdk.tools.jlink.internal;
  26 
  27 import java.nio.file.Path;
  28 import java.util.Objects;
  29 import jdk.tools.jlink.plugin.ResourcePoolEntry;
  30 
  31 public final class ResourcePoolEntryFactory {
  32     private ResourcePoolEntryFactory() {}
  33 
  34     public static ResourcePoolEntry create(String path,
  35             ResourcePoolEntry.Type type, byte[] content) {
  36         return new ByteArrayResourcePoolEntry(moduleFrom(path), path, type, content);
  37     }
  38 
  39     public static ResourcePoolEntry create(String path,
  40             ResourcePoolEntry.Type type, Path file) {
  41         return new PathResourcePoolEntry(moduleFrom(path), path, type, file);
  42     }
  43 
  44     public static ResourcePoolEntry create(ResourcePoolEntry original, byte[] content) {
  45         return new ByteArrayResourcePoolEntry(original.moduleName(),
  46                 original.path(), original.type(), content);
  47     }
  48 
  49     public static ResourcePoolEntry create(ResourcePoolEntry original, Path file) {
  50         return new PathResourcePoolEntry(original.moduleName(),
  51                 original.path(), original.type(), file);
  52     }
  53 
  54     private static String moduleFrom(String path) {
  55         Objects.requireNonNull(path);
  56         if (path.isEmpty() || path.charAt(0) != '/') {
  57             throw new IllegalArgumentException(path + " must start with /");
  58         }
  59         String noRoot = path.substring(1);
  60         int idx = noRoot.indexOf('/');
  61         if (idx == -1) {
  62             throw new IllegalArgumentException("/ missing after module: " + path);
  63         }
  64         return noRoot.substring(0, idx);
  65     }
  66 }