1 /*
   2  * Copyright (c) 2011, 2013, 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 com.oracle.ipack.resources;
  27 
  28 import java.io.File;
  29 import java.util.ArrayList;
  30 import java.util.Arrays;
  31 import java.util.Collections;
  32 import java.util.HashSet;
  33 import java.util.List;
  34 import java.util.Set;
  35 
  36 public final class ResourceRules {
  37     private final List<Exclude> excludes;
  38     private final Set<String> excludesLookup;
  39 
  40     public ResourceRules() {
  41         this.excludes = new ArrayList<Exclude>();
  42         this.excludesLookup = new HashSet<String>();
  43     }
  44 
  45     public void addExclude(final String name, final int weight) {
  46         excludes.add(new Exclude(name, weight));
  47         excludesLookup.add(name);
  48     }
  49 
  50     public List<Exclude> getExcludes() {
  51         return Collections.unmodifiableList(excludes);
  52     }
  53 
  54     public List<String> collectResources(final File baseDirectory) {
  55         final List<String> resources = new ArrayList<String>();
  56         collectResources(resources, baseDirectory, "");
  57 
  58         return Collections.unmodifiableList(resources);
  59     }
  60 
  61     private void collectResources(final List<String> resources,
  62                                   final File resourceFile,
  63                                   final String resourceName) {
  64         if (excludesLookup.contains(resourceName)) {
  65             return;
  66         }
  67 
  68         if (resourceFile.isDirectory()) {
  69             if (!resourceName.isEmpty()) {
  70                 resources.add(resourceName + '/');
  71             }
  72 
  73             final String[] childNames = resourceFile.list();
  74             for (final String childName: childNames) {
  75                 collectResources(resources,
  76                                  new File(resourceFile, childName),
  77                                  constructResourceName(
  78                                          resourceName, childName));
  79             }
  80 
  81             return;
  82         }
  83 
  84         if (resourceFile.isFile()) {
  85             resources.add(resourceName);
  86             return;
  87         }
  88 
  89         System.err.println("Skipping " + resourceName);
  90     }
  91 
  92     public static final class Exclude {
  93         private final String name;
  94         private final int weight;
  95 
  96         public Exclude(final String name, final int weight) {
  97             this.name = name;
  98             this.weight = weight;
  99         }
 100 
 101         public String getName() {
 102             return name;
 103         }
 104 
 105         public int getWeight() {
 106             return weight;
 107         }
 108     }
 109 
 110     private static String constructResourceName(final String parentResource,
 111                                                 final String childResource) {
 112         return parentResource.isEmpty()
 113                 ? childResource
 114                 : parentResource + '/' + childResource;
 115     }
 116 }